/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 PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:16:59,861 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:16:59,916 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 [2023-08-27 13:16:59,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:16:59,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:16:59,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:16:59,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:16:59,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:16:59,954 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:16:59,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:16:59,957 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:16:59,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:16:59,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:16:59,957 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:16:59,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:16:59,958 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:16:59,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:16:59,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:16:59,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:16:59,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:16:59,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:17:00,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:17:00,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:17:00,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:17:00,190 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:17:00,191 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:17:00,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 13:17:01,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:17:01,298 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:17:01,299 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 13:17:01,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3c50e6e/387df2988d5b45eda80938e931432a0d/FLAGbba01a57c [2023-08-27 13:17:01,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c3c50e6e/387df2988d5b45eda80938e931432a0d [2023-08-27 13:17:01,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:17:01,327 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:17:01,328 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:17:01,328 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:17:01,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:17:01,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3a1cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01, skipping insertion in model container [2023-08-27 13:17:01,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,350 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:17:01,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:17:01,471 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:17:01,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:17:01,495 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:17:01,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01 WrapperNode [2023-08-27 13:17:01,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:17:01,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:17:01,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:17:01,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:17:01,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,521 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-08-27 13:17:01,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:17:01,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:17:01,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:17:01,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:17:01,528 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,554 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:17:01,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:17:01,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:17:01,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:17:01,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (1/1) ... [2023-08-27 13:17:01,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:17:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:01,588 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) [2023-08-27 13:17:01,596 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 [2023-08-27 13:17:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:17:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:17:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:17:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:17:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:17:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:17:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:17:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:17:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:17:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:17:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:17:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:17:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:17:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:17:01,619 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 13:17:01,702 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:17:01,703 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:17:01,829 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:17:01,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:17:01,834 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 13:17:01,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:17:01 BoogieIcfgContainer [2023-08-27 13:17:01,835 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:17:01,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:17:01,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:17:01,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:17:01,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:17:01" (1/3) ... [2023-08-27 13:17:01,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4160c8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:17:01, skipping insertion in model container [2023-08-27 13:17:01,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:17:01" (2/3) ... [2023-08-27 13:17:01,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4160c8db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:17:01, skipping insertion in model container [2023-08-27 13:17:01,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:17:01" (3/3) ... [2023-08-27 13:17:01,840 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-27 13:17:01,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:17:01,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 13:17:01,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:17:01,929 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 13:17:01,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 13:17:02,021 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-08-27 13:17:02,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:17:02,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 13:17:02,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 13:17:02,031 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2023-08-27 13:17:02,034 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:17:02,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 13:17:02,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 13:17:02,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 208 flow [2023-08-27 13:17:02,074 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-27 13:17:02,075 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:17:02,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 7/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 13:17:02,077 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-27 13:17:04,031 INFO L134 LiptonReduction]: Checked pairs total: 1467 [2023-08-27 13:17:04,031 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 13:17:04,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:17:04,044 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;@fff9aad, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:17:04,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 13:17:04,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:17:04,048 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-27 13:17:04,048 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:17:04,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:04,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:17:04,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:04,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 895815217, now seen corresponding path program 1 times [2023-08-27 13:17:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767195972] [2023-08-27 13:17:04,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:04,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:04,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:04,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767195972] [2023-08-27 13:17:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767195972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:17:04,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993764405] [2023-08-27 13:17:04,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:17:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:17:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:17:04,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-08-27 13:17:04,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:04,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-08-27 13:17:04,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:04,563 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-08-27 13:17:04,563 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-27 13:17:04,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1597 event pairs, 39 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-08-27 13:17:04,567 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-27 13:17:04,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-27 13:17:04,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:17:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:17:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-27 13:17:04,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421052631578948 [2023-08-27 13:17:04,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-27 13:17:04,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-27 13:17:04,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:04,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-27 13:17:04,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,585 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 309 transitions. [2023-08-27 13:17:04,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-27 13:17:04,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 13:17:04,588 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-27 13:17:04,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-27 13:17:04,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-27 13:17:04,594 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-27 13:17:04,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:04,595 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] [2023-08-27 13:17:04,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:17:04,595 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:04,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:04,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1693606568, now seen corresponding path program 1 times [2023-08-27 13:17:04,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:04,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863852643] [2023-08-27 13:17:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:04,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:04,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:04,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863852643] [2023-08-27 13:17:04,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863852643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:04,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:04,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:04,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556284174] [2023-08-27 13:17:04,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:04,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:04,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:04,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:04,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:04,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:04,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:05,063 INFO L124 PetriNetUnfolderBase]: 597/900 cut-off events. [2023-08-27 13:17:05,063 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-08-27 13:17:05,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 900 events. 597/900 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3307 event pairs, 166 based on Foata normal form. 6/906 useless extension candidates. Maximal degree in co-relation 616. Up to 420 conditions per place. [2023-08-27 13:17:05,069 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 69 selfloop transitions, 8 changer transitions 3/80 dead transitions. [2023-08-27 13:17:05,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 80 transitions, 393 flow [2023-08-27 13:17:05,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 13:17:05,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 13:17:05,073 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 13:17:05,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 13:17:05,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:05,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 13:17:05,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,079 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,079 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 605 transitions. [2023-08-27 13:17:05,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 80 transitions, 393 flow [2023-08-27 13:17:05,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 80 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:17:05,082 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 141 flow [2023-08-27 13:17:05,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-27 13:17:05,083 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-27 13:17:05,083 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 141 flow [2023-08-27 13:17:05,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:05,084 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] [2023-08-27 13:17:05,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 13:17:05,085 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:05,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2015575896, now seen corresponding path program 2 times [2023-08-27 13:17:05,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:05,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79980464] [2023-08-27 13:17:05,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:05,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:05,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:05,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:05,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79980464] [2023-08-27 13:17:05,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79980464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:05,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884194580] [2023-08-27 13:17:05,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:17:05,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:05,236 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) [2023-08-27 13:17:05,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 13:17:05,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:17:05,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:05,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:17:05,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:05,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:05,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884194580] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:05,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:05,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-08-27 13:17:05,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478382421] [2023-08-27 13:17:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:05,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:05,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 13:17:05,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:05,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:05,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:05,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:05,957 INFO L124 PetriNetUnfolderBase]: 816/1236 cut-off events. [2023-08-27 13:17:05,957 INFO L125 PetriNetUnfolderBase]: For 1522/1577 co-relation queries the response was YES. [2023-08-27 13:17:05,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1236 events. 816/1236 cut-off events. For 1522/1577 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5169 event pairs, 172 based on Foata normal form. 6/1240 useless extension candidates. Maximal degree in co-relation 1784. Up to 398 conditions per place. [2023-08-27 13:17:05,964 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 96 selfloop transitions, 18 changer transitions 1/116 dead transitions. [2023-08-27 13:17:05,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 116 transitions, 708 flow [2023-08-27 13:17:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 13:17:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 13:17:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 743 transitions. [2023-08-27 13:17:05,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888157894736842 [2023-08-27 13:17:05,966 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 743 transitions. [2023-08-27 13:17:05,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 743 transitions. [2023-08-27 13:17:05,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:05,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 743 transitions. [2023-08-27 13:17:05,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.875) internal successors, (743), 8 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,970 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,970 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 141 flow. Second operand 8 states and 743 transitions. [2023-08-27 13:17:05,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 116 transitions, 708 flow [2023-08-27 13:17:05,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 116 transitions, 664 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:05,974 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2023-08-27 13:17:05,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-08-27 13:17:05,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-08-27 13:17:05,975 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2023-08-27 13:17:05,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:05,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:05,975 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] [2023-08-27 13:17:05,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:06,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:06,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:06,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:06,179 INFO L85 PathProgramCache]: Analyzing trace with hash -504581648, now seen corresponding path program 3 times [2023-08-27 13:17:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:06,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889987534] [2023-08-27 13:17:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:06,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:06,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889987534] [2023-08-27 13:17:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889987534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:06,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:06,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:06,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566123633] [2023-08-27 13:17:06,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:06,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:06,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:06,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:06,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:06,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:06,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:06,529 INFO L124 PetriNetUnfolderBase]: 1018/1511 cut-off events. [2023-08-27 13:17:06,529 INFO L125 PetriNetUnfolderBase]: For 4489/4489 co-relation queries the response was YES. [2023-08-27 13:17:06,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 1511 events. 1018/1511 cut-off events. For 4489/4489 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5945 event pairs, 501 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 4481. Up to 1267 conditions per place. [2023-08-27 13:17:06,536 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 67 selfloop transitions, 22 changer transitions 4/93 dead transitions. [2023-08-27 13:17:06,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 93 transitions, 759 flow [2023-08-27 13:17:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 13:17:06,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 13:17:06,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 13:17:06,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 13:17:06,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:06,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 13:17:06,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:06,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:06,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:06,541 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 7 states and 592 transitions. [2023-08-27 13:17:06,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 93 transitions, 759 flow [2023-08-27 13:17:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 751 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 13:17:06,550 INFO L231 Difference]: Finished difference. Result has 57 places, 65 transitions, 518 flow [2023-08-27 13:17:06,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=57, PETRI_TRANSITIONS=65} [2023-08-27 13:17:06,551 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-27 13:17:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 65 transitions, 518 flow [2023-08-27 13:17:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:06,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:06,551 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] [2023-08-27 13:17:06,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 13:17:06,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:06,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash 273786132, now seen corresponding path program 4 times [2023-08-27 13:17:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:06,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513125717] [2023-08-27 13:17:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:06,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513125717] [2023-08-27 13:17:06,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513125717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:06,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935215496] [2023-08-27 13:17:06,672 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 13:17:06,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:06,676 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) [2023-08-27 13:17:06,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 13:17:06,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 13:17:06,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:06,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:17:06,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:06,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:07,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935215496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:07,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:07,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-08-27 13:17:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210796721] [2023-08-27 13:17:07,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:07,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 13:17:07,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 13:17:07,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-27 13:17:07,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:07,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 65 transitions, 518 flow. Second operand has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:07,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:07,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:08,021 INFO L124 PetriNetUnfolderBase]: 1574/2231 cut-off events. [2023-08-27 13:17:08,021 INFO L125 PetriNetUnfolderBase]: For 10230/10230 co-relation queries the response was YES. [2023-08-27 13:17:08,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10328 conditions, 2231 events. 1574/2231 cut-off events. For 10230/10230 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8821 event pairs, 422 based on Foata normal form. 36/2267 useless extension candidates. Maximal degree in co-relation 7505. Up to 1310 conditions per place. [2023-08-27 13:17:08,036 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 129 selfloop transitions, 106 changer transitions 0/235 dead transitions. [2023-08-27 13:17:08,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 235 transitions, 2151 flow [2023-08-27 13:17:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 13:17:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 13:17:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1692 transitions. [2023-08-27 13:17:08,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44526315789473686 [2023-08-27 13:17:08,040 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1692 transitions. [2023-08-27 13:17:08,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1692 transitions. [2023-08-27 13:17:08,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:08,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1692 transitions. [2023-08-27 13:17:08,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 84.6) internal successors, (1692), 20 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:08,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:08,048 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:08,048 INFO L175 Difference]: Start difference. First operand has 57 places, 65 transitions, 518 flow. Second operand 20 states and 1692 transitions. [2023-08-27 13:17:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 235 transitions, 2151 flow [2023-08-27 13:17:08,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 235 transitions, 2091 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-08-27 13:17:08,075 INFO L231 Difference]: Finished difference. Result has 88 places, 157 transitions, 1750 flow [2023-08-27 13:17:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1750, PETRI_PLACES=88, PETRI_TRANSITIONS=157} [2023-08-27 13:17:08,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-08-27 13:17:08,076 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 157 transitions, 1750 flow [2023-08-27 13:17:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:08,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:08,077 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] [2023-08-27 13:17:08,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 13:17:08,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:08,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:08,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1040607848, now seen corresponding path program 1 times [2023-08-27 13:17:08,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:08,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634996910] [2023-08-27 13:17:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:08,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634996910] [2023-08-27 13:17:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634996910] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:08,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820110189] [2023-08-27 13:17:08,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:08,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:08,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:08,413 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) [2023-08-27 13:17:08,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 13:17:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:08,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 13:17:08,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:08,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:08,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820110189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:08,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:08,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 13:17:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504262372] [2023-08-27 13:17:08,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:08,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 13:17:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 13:17:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 13:17:08,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:08,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 157 transitions, 1750 flow. Second operand has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:08,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:08,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:08,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:09,436 INFO L124 PetriNetUnfolderBase]: 2039/2898 cut-off events. [2023-08-27 13:17:09,436 INFO L125 PetriNetUnfolderBase]: For 24940/24940 co-relation queries the response was YES. [2023-08-27 13:17:09,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17387 conditions, 2898 events. 2039/2898 cut-off events. For 24940/24940 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12331 event pairs, 356 based on Foata normal form. 22/2920 useless extension candidates. Maximal degree in co-relation 16487. Up to 1128 conditions per place. [2023-08-27 13:17:09,457 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 243 selfloop transitions, 82 changer transitions 2/327 dead transitions. [2023-08-27 13:17:09,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 327 transitions, 3995 flow [2023-08-27 13:17:09,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:17:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:17:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 13:17:09,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 13:17:09,460 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 13:17:09,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 13:17:09,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:09,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 13:17:09,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:09,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:09,463 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:09,464 INFO L175 Difference]: Start difference. First operand has 88 places, 157 transitions, 1750 flow. Second operand 10 states and 876 transitions. [2023-08-27 13:17:09,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 327 transitions, 3995 flow [2023-08-27 13:17:09,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 327 transitions, 3109 flow, removed 386 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:09,544 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 1943 flow [2023-08-27 13:17:09,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=102, PETRI_TRANSITIONS=198} [2023-08-27 13:17:09,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2023-08-27 13:17:09,545 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 1943 flow [2023-08-27 13:17:09,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:09,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:09,545 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] [2023-08-27 13:17:09,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-27 13:17:09,747 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 [2023-08-27 13:17:09,748 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:09,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1484610118, now seen corresponding path program 5 times [2023-08-27 13:17:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:09,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697551935] [2023-08-27 13:17:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:09,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697551935] [2023-08-27 13:17:09,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697551935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805156965] [2023-08-27 13:17:09,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 13:17:09,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:09,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:09,871 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) [2023-08-27 13:17:09,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 13:17:09,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:17:09,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:09,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:17:09,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:10,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:10,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805156965] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:10,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:10,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 13:17:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253430048] [2023-08-27 13:17:10,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:10,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 13:17:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 13:17:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-08-27 13:17:10,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:10,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 198 transitions, 1943 flow. Second operand has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:10,944 INFO L124 PetriNetUnfolderBase]: 2873/4006 cut-off events. [2023-08-27 13:17:10,944 INFO L125 PetriNetUnfolderBase]: For 39163/39163 co-relation queries the response was YES. [2023-08-27 13:17:10,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 4006 events. 2873/4006 cut-off events. For 39163/39163 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17087 event pairs, 511 based on Foata normal form. 44/4050 useless extension candidates. Maximal degree in co-relation 23530. Up to 2545 conditions per place. [2023-08-27 13:17:10,971 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 239 selfloop transitions, 232 changer transitions 2/473 dead transitions. [2023-08-27 13:17:10,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 473 transitions, 5515 flow [2023-08-27 13:17:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 13:17:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 13:17:10,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1855 transitions. [2023-08-27 13:17:10,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437799043062201 [2023-08-27 13:17:10,975 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1855 transitions. [2023-08-27 13:17:10,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1855 transitions. [2023-08-27 13:17:10,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:10,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1855 transitions. [2023-08-27 13:17:10,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 84.31818181818181) internal successors, (1855), 22 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:10,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:10,982 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:10,982 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 1943 flow. Second operand 22 states and 1855 transitions. [2023-08-27 13:17:10,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 473 transitions, 5515 flow [2023-08-27 13:17:11,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 473 transitions, 5467 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-08-27 13:17:11,075 INFO L231 Difference]: Finished difference. Result has 134 places, 336 transitions, 4345 flow [2023-08-27 13:17:11,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4345, PETRI_PLACES=134, PETRI_TRANSITIONS=336} [2023-08-27 13:17:11,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2023-08-27 13:17:11,076 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 336 transitions, 4345 flow [2023-08-27 13:17:11,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:11,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:11,076 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] [2023-08-27 13:17:11,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:11,281 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 [2023-08-27 13:17:11,281 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:11,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1955701050, now seen corresponding path program 2 times [2023-08-27 13:17:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397604214] [2023-08-27 13:17:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:11,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:11,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397604214] [2023-08-27 13:17:11,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397604214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:11,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822330424] [2023-08-27 13:17:11,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:17:11,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:11,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:11,392 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) [2023-08-27 13:17:11,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 13:17:11,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:17:11,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:11,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:17:11,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:11,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:12,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:12,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822330424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:12,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:12,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2023-08-27 13:17:12,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613980201] [2023-08-27 13:17:12,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:12,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 13:17:12,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:12,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 13:17:12,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-27 13:17:12,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 13:17:12,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 336 transitions, 4345 flow. Second operand has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:12,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:12,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 13:17:12,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:14,059 INFO L124 PetriNetUnfolderBase]: 4618/6458 cut-off events. [2023-08-27 13:17:14,060 INFO L125 PetriNetUnfolderBase]: For 88664/88664 co-relation queries the response was YES. [2023-08-27 13:17:14,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45991 conditions, 6458 events. 4618/6458 cut-off events. For 88664/88664 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 30288 event pairs, 411 based on Foata normal form. 60/6518 useless extension candidates. Maximal degree in co-relation 44548. Up to 2398 conditions per place. [2023-08-27 13:17:14,113 INFO L140 encePairwiseOnDemand]: 179/190 looper letters, 406 selfloop transitions, 396 changer transitions 0/802 dead transitions. [2023-08-27 13:17:14,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 802 transitions, 11558 flow [2023-08-27 13:17:14,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 13:17:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 13:17:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2316 transitions. [2023-08-27 13:17:14,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43533834586466164 [2023-08-27 13:17:14,119 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2316 transitions. [2023-08-27 13:17:14,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2316 transitions. [2023-08-27 13:17:14,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:14,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2316 transitions. [2023-08-27 13:17:14,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.71428571428571) internal successors, (2316), 28 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:14,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:14,130 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:14,130 INFO L175 Difference]: Start difference. First operand has 134 places, 336 transitions, 4345 flow. Second operand 28 states and 2316 transitions. [2023-08-27 13:17:14,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 802 transitions, 11558 flow [2023-08-27 13:17:14,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 802 transitions, 10074 flow, removed 742 selfloop flow, removed 0 redundant places. [2023-08-27 13:17:14,731 INFO L231 Difference]: Finished difference. Result has 177 places, 578 transitions, 8096 flow [2023-08-27 13:17:14,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8096, PETRI_PLACES=177, PETRI_TRANSITIONS=578} [2023-08-27 13:17:14,733 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2023-08-27 13:17:14,733 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 578 transitions, 8096 flow [2023-08-27 13:17:14,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:14,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:14,734 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] [2023-08-27 13:17:14,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:14,938 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 [2023-08-27 13:17:14,938 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:14,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash -417324130, now seen corresponding path program 6 times [2023-08-27 13:17:14,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:14,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189537830] [2023-08-27 13:17:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:15,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:15,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189537830] [2023-08-27 13:17:15,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189537830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:15,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:15,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:15,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904863453] [2023-08-27 13:17:15,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:15,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:15,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:15,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:15,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 578 transitions, 8096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:15,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:15,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:15,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:16,319 INFO L124 PetriNetUnfolderBase]: 4773/6735 cut-off events. [2023-08-27 13:17:16,319 INFO L125 PetriNetUnfolderBase]: For 106934/106934 co-relation queries the response was YES. [2023-08-27 13:17:16,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51817 conditions, 6735 events. 4773/6735 cut-off events. For 106934/106934 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 32381 event pairs, 294 based on Foata normal form. 34/6769 useless extension candidates. Maximal degree in co-relation 50971. Up to 2458 conditions per place. [2023-08-27 13:17:16,374 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 518 selfloop transitions, 318 changer transitions 2/838 dead transitions. [2023-08-27 13:17:16,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 838 transitions, 13808 flow [2023-08-27 13:17:16,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:17:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:17:16,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 868 transitions. [2023-08-27 13:17:16,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568421052631579 [2023-08-27 13:17:16,376 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 868 transitions. [2023-08-27 13:17:16,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 868 transitions. [2023-08-27 13:17:16,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:16,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 868 transitions. [2023-08-27 13:17:16,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.8) internal successors, (868), 10 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:16,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:16,380 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:16,380 INFO L175 Difference]: Start difference. First operand has 177 places, 578 transitions, 8096 flow. Second operand 10 states and 868 transitions. [2023-08-27 13:17:16,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 838 transitions, 13808 flow [2023-08-27 13:17:17,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 838 transitions, 12295 flow, removed 756 selfloop flow, removed 1 redundant places. [2023-08-27 13:17:17,101 INFO L231 Difference]: Finished difference. Result has 190 places, 640 transitions, 9224 flow [2023-08-27 13:17:17,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=7341, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9224, PETRI_PLACES=190, PETRI_TRANSITIONS=640} [2023-08-27 13:17:17,102 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-08-27 13:17:17,102 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 640 transitions, 9224 flow [2023-08-27 13:17:17,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:17,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:17,102 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] [2023-08-27 13:17:17,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:17:17,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:17,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1884392078, now seen corresponding path program 7 times [2023-08-27 13:17:17,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:17,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019603658] [2023-08-27 13:17:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:17,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019603658] [2023-08-27 13:17:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019603658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:17,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606047293] [2023-08-27 13:17:17,203 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 13:17:17,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:17,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:17,204 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) [2023-08-27 13:17:17,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 13:17:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:17,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 13:17:17,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:17,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:17,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606047293] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:17,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:17,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 13:17:17,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403320751] [2023-08-27 13:17:17,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:17,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:17,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:17,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:17,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 13:17:17,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:17,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 640 transitions, 9224 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:17,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:17,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:17,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:19,090 INFO L124 PetriNetUnfolderBase]: 5070/7231 cut-off events. [2023-08-27 13:17:19,090 INFO L125 PetriNetUnfolderBase]: For 105912/105948 co-relation queries the response was YES. [2023-08-27 13:17:19,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54677 conditions, 7231 events. 5070/7231 cut-off events. For 105912/105948 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36169 event pairs, 531 based on Foata normal form. 38/7260 useless extension candidates. Maximal degree in co-relation 53612. Up to 2413 conditions per place. [2023-08-27 13:17:19,153 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 500 selfloop transitions, 260 changer transitions 0/771 dead transitions. [2023-08-27 13:17:19,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 771 transitions, 12310 flow [2023-08-27 13:17:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 13:17:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 13:17:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 741 transitions. [2023-08-27 13:17:19,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-27 13:17:19,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 741 transitions. [2023-08-27 13:17:19,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 741 transitions. [2023-08-27 13:17:19,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:19,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 741 transitions. [2023-08-27 13:17:19,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:19,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:19,158 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:19,158 INFO L175 Difference]: Start difference. First operand has 190 places, 640 transitions, 9224 flow. Second operand 8 states and 741 transitions. [2023-08-27 13:17:19,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 771 transitions, 12310 flow [2023-08-27 13:17:19,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 771 transitions, 12042 flow, removed 134 selfloop flow, removed 0 redundant places. [2023-08-27 13:17:19,835 INFO L231 Difference]: Finished difference. Result has 202 places, 670 transitions, 10428 flow [2023-08-27 13:17:19,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10428, PETRI_PLACES=202, PETRI_TRANSITIONS=670} [2023-08-27 13:17:19,836 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2023-08-27 13:17:19,836 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 670 transitions, 10428 flow [2023-08-27 13:17:19,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:19,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:19,836 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] [2023-08-27 13:17:19,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:20,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:20,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1392557114, now seen corresponding path program 8 times [2023-08-27 13:17:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:20,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80035319] [2023-08-27 13:17:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:20,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80035319] [2023-08-27 13:17:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80035319] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484299463] [2023-08-27 13:17:20,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:17:20,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:20,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:20,139 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) [2023-08-27 13:17:20,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 13:17:20,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:17:20,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:20,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:17:20,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:20,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:20,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484299463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:20,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:20,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 13:17:20,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772356947] [2023-08-27 13:17:20,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:20,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 13:17:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:20,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 13:17:20,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 13:17:20,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:20,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 670 transitions, 10428 flow. Second operand has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:20,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:20,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:22,050 INFO L124 PetriNetUnfolderBase]: 5355/7765 cut-off events. [2023-08-27 13:17:22,050 INFO L125 PetriNetUnfolderBase]: For 120161/120161 co-relation queries the response was YES. [2023-08-27 13:17:22,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60196 conditions, 7765 events. 5355/7765 cut-off events. For 120161/120161 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40517 event pairs, 576 based on Foata normal form. 20/7785 useless extension candidates. Maximal degree in co-relation 59284. Up to 3056 conditions per place. [2023-08-27 13:17:22,110 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 489 selfloop transitions, 340 changer transitions 2/831 dead transitions. [2023-08-27 13:17:22,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 831 transitions, 14387 flow [2023-08-27 13:17:22,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:17:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:17:22,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 872 transitions. [2023-08-27 13:17:22,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589473684210526 [2023-08-27 13:17:22,114 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 872 transitions. [2023-08-27 13:17:22,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 872 transitions. [2023-08-27 13:17:22,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:22,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 872 transitions. [2023-08-27 13:17:22,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:22,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:22,117 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:22,117 INFO L175 Difference]: Start difference. First operand has 202 places, 670 transitions, 10428 flow. Second operand 10 states and 872 transitions. [2023-08-27 13:17:22,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 831 transitions, 14387 flow [2023-08-27 13:17:22,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 831 transitions, 14240 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:22,847 INFO L231 Difference]: Finished difference. Result has 215 places, 722 transitions, 12523 flow [2023-08-27 13:17:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=10258, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12523, PETRI_PLACES=215, PETRI_TRANSITIONS=722} [2023-08-27 13:17:22,848 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2023-08-27 13:17:22,848 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 722 transitions, 12523 flow [2023-08-27 13:17:22,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:22,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:22,849 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] [2023-08-27 13:17:22,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:23,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:23,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -921041164, now seen corresponding path program 3 times [2023-08-27 13:17:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:23,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175504953] [2023-08-27 13:17:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175504953] [2023-08-27 13:17:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175504953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308949462] [2023-08-27 13:17:23,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:23,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:23,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 722 transitions, 12523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:23,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:23,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:23,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:24,884 INFO L124 PetriNetUnfolderBase]: 5715/8325 cut-off events. [2023-08-27 13:17:24,884 INFO L125 PetriNetUnfolderBase]: For 146028/146028 co-relation queries the response was YES. [2023-08-27 13:17:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66718 conditions, 8325 events. 5715/8325 cut-off events. For 146028/146028 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44536 event pairs, 488 based on Foata normal form. 40/8365 useless extension candidates. Maximal degree in co-relation 66196. Up to 2838 conditions per place. [2023-08-27 13:17:24,963 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 497 selfloop transitions, 369 changer transitions 0/866 dead transitions. [2023-08-27 13:17:24,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 866 transitions, 15988 flow [2023-08-27 13:17:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:17:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:17:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 13:17:24,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 13:17:24,965 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 13:17:24,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 13:17:24,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:24,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 13:17:24,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:24,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:24,968 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:24,968 INFO L175 Difference]: Start difference. First operand has 215 places, 722 transitions, 12523 flow. Second operand 10 states and 876 transitions. [2023-08-27 13:17:24,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 866 transitions, 15988 flow [2023-08-27 13:17:25,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 866 transitions, 15760 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:25,840 INFO L231 Difference]: Finished difference. Result has 227 places, 754 transitions, 14033 flow [2023-08-27 13:17:25,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=12297, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14033, PETRI_PLACES=227, PETRI_TRANSITIONS=754} [2023-08-27 13:17:25,841 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2023-08-27 13:17:25,841 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 754 transitions, 14033 flow [2023-08-27 13:17:25,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:25,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:25,841 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] [2023-08-27 13:17:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 13:17:25,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:25,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:25,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1775767970, now seen corresponding path program 9 times [2023-08-27 13:17:25,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:25,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059638620] [2023-08-27 13:17:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:25,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:25,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059638620] [2023-08-27 13:17:25,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059638620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:25,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18885061] [2023-08-27 13:17:25,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 13:17:25,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:25,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:25,964 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) [2023-08-27 13:17:25,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 13:17:26,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 13:17:26,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:26,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:17:26,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:26,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18885061] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:26,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 13:17:26,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468221286] [2023-08-27 13:17:26,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:26,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:26,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 13:17:26,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:26,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 754 transitions, 14033 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:26,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:26,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:26,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:27,856 INFO L124 PetriNetUnfolderBase]: 5693/8308 cut-off events. [2023-08-27 13:17:27,856 INFO L125 PetriNetUnfolderBase]: For 170226/170294 co-relation queries the response was YES. [2023-08-27 13:17:27,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69723 conditions, 8308 events. 5693/8308 cut-off events. For 170226/170294 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44661 event pairs, 848 based on Foata normal form. 59/8349 useless extension candidates. Maximal degree in co-relation 69173. Up to 4710 conditions per place. [2023-08-27 13:17:27,933 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 133 changer transitions 0/827 dead transitions. [2023-08-27 13:17:27,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 827 transitions, 16434 flow [2023-08-27 13:17:27,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:17:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:17:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 13:17:27,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 13:17:27,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 13:17:27,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 13:17:27,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:27,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 13:17:27,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:27,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:27,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:27,945 INFO L175 Difference]: Start difference. First operand has 227 places, 754 transitions, 14033 flow. Second operand 6 states and 548 transitions. [2023-08-27 13:17:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 827 transitions, 16434 flow [2023-08-27 13:17:28,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 827 transitions, 16174 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:29,008 INFO L231 Difference]: Finished difference. Result has 232 places, 760 transitions, 14222 flow [2023-08-27 13:17:29,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=13777, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14222, PETRI_PLACES=232, PETRI_TRANSITIONS=760} [2023-08-27 13:17:29,009 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2023-08-27 13:17:29,009 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 760 transitions, 14222 flow [2023-08-27 13:17:29,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:29,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:29,010 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] [2023-08-27 13:17:29,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:29,214 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,SelfDestructingSolverStorable12 [2023-08-27 13:17:29,214 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:29,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1990970944, now seen corresponding path program 10 times [2023-08-27 13:17:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:29,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042105527] [2023-08-27 13:17:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042105527] [2023-08-27 13:17:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042105527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131070439] [2023-08-27 13:17:29,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 13:17:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:29,318 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) [2023-08-27 13:17:29,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 13:17:29,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 13:17:29,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:29,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:17:29,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:29,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:29,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131070439] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 13:17:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020394372] [2023-08-27 13:17:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:29,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:29,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 13:17:29,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:29,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 760 transitions, 14222 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:29,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:29,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:29,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:31,391 INFO L124 PetriNetUnfolderBase]: 5715/8354 cut-off events. [2023-08-27 13:17:31,392 INFO L125 PetriNetUnfolderBase]: For 170142/170210 co-relation queries the response was YES. [2023-08-27 13:17:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70868 conditions, 8354 events. 5715/8354 cut-off events. For 170142/170210 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 45115 event pairs, 860 based on Foata normal form. 73/8409 useless extension candidates. Maximal degree in co-relation 70423. Up to 4678 conditions per place. [2023-08-27 13:17:31,464 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 677 selfloop transitions, 139 changer transitions 0/834 dead transitions. [2023-08-27 13:17:31,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 834 transitions, 16648 flow [2023-08-27 13:17:31,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:17:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:17:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 13:17:31,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 13:17:31,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 13:17:31,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 13:17:31,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:31,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 13:17:31,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:31,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:31,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:31,467 INFO L175 Difference]: Start difference. First operand has 232 places, 760 transitions, 14222 flow. Second operand 6 states and 550 transitions. [2023-08-27 13:17:31,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 834 transitions, 16648 flow [2023-08-27 13:17:32,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 834 transitions, 16443 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:32,481 INFO L231 Difference]: Finished difference. Result has 236 places, 763 transitions, 14391 flow [2023-08-27 13:17:32,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14017, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14391, PETRI_PLACES=236, PETRI_TRANSITIONS=763} [2023-08-27 13:17:32,482 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2023-08-27 13:17:32,482 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 763 transitions, 14391 flow [2023-08-27 13:17:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:32,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:32,482 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] [2023-08-27 13:17:32,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-27 13:17:32,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 13:17:32,682 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:32,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1763514998, now seen corresponding path program 11 times [2023-08-27 13:17:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:32,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380645525] [2023-08-27 13:17:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:32,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:32,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380645525] [2023-08-27 13:17:32,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380645525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053874566] [2023-08-27 13:17:32,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 13:17:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:32,804 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) [2023-08-27 13:17:32,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 13:17:32,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:17:32,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:32,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:17:32,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:32,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:32,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053874566] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 13:17:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9040534] [2023-08-27 13:17:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:33,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 13:17:33,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:33,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 763 transitions, 14391 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:33,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:33,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:33,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:34,773 INFO L124 PetriNetUnfolderBase]: 5679/8298 cut-off events. [2023-08-27 13:17:34,774 INFO L125 PetriNetUnfolderBase]: For 171751/171819 co-relation queries the response was YES. [2023-08-27 13:17:34,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70685 conditions, 8298 events. 5679/8298 cut-off events. For 171751/171819 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 44774 event pairs, 866 based on Foata normal form. 73/8353 useless extension candidates. Maximal degree in co-relation 70239. Up to 4343 conditions per place. [2023-08-27 13:17:34,857 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 665 selfloop transitions, 163 changer transitions 0/846 dead transitions. [2023-08-27 13:17:34,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 846 transitions, 17028 flow [2023-08-27 13:17:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:17:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:17:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 13:17:34,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 13:17:34,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 13:17:34,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 13:17:34,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:34,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 13:17:34,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:34,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:34,861 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:34,861 INFO L175 Difference]: Start difference. First operand has 236 places, 763 transitions, 14391 flow. Second operand 6 states and 550 transitions. [2023-08-27 13:17:34,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 846 transitions, 17028 flow [2023-08-27 13:17:35,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 846 transitions, 16876 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:35,997 INFO L231 Difference]: Finished difference. Result has 241 places, 770 transitions, 14835 flow [2023-08-27 13:17:35,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14244, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14835, PETRI_PLACES=241, PETRI_TRANSITIONS=770} [2023-08-27 13:17:35,998 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2023-08-27 13:17:35,998 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 770 transitions, 14835 flow [2023-08-27 13:17:35,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:35,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:35,998 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] [2023-08-27 13:17:36,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 13:17:36,240 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,SelfDestructingSolverStorable14 [2023-08-27 13:17:36,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:36,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:36,241 INFO L85 PathProgramCache]: Analyzing trace with hash 402350888, now seen corresponding path program 4 times [2023-08-27 13:17:36,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:36,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093202181] [2023-08-27 13:17:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093202181] [2023-08-27 13:17:36,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093202181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:36,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:36,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:36,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879707412] [2023-08-27 13:17:36,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:36,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:36,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:36,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 770 transitions, 14835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:36,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:36,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:36,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:38,103 INFO L124 PetriNetUnfolderBase]: 5900/8643 cut-off events. [2023-08-27 13:17:38,103 INFO L125 PetriNetUnfolderBase]: For 183331/183331 co-relation queries the response was YES. [2023-08-27 13:17:38,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74878 conditions, 8643 events. 5900/8643 cut-off events. For 183331/183331 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 47045 event pairs, 985 based on Foata normal form. 28/8671 useless extension candidates. Maximal degree in co-relation 74402. Up to 5431 conditions per place. [2023-08-27 13:17:38,185 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 713 selfloop transitions, 169 changer transitions 10/892 dead transitions. [2023-08-27 13:17:38,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 892 transitions, 18154 flow [2023-08-27 13:17:38,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 13:17:38,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 13:17:38,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 13:17:38,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 13:17:38,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:38,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 13:17:38,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:38,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:38,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:38,189 INFO L175 Difference]: Start difference. First operand has 241 places, 770 transitions, 14835 flow. Second operand 7 states and 609 transitions. [2023-08-27 13:17:38,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 892 transitions, 18154 flow [2023-08-27 13:17:39,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 892 transitions, 17865 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-27 13:17:39,366 INFO L231 Difference]: Finished difference. Result has 249 places, 788 transitions, 15455 flow [2023-08-27 13:17:39,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14546, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15455, PETRI_PLACES=249, PETRI_TRANSITIONS=788} [2023-08-27 13:17:39,367 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2023-08-27 13:17:39,367 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 788 transitions, 15455 flow [2023-08-27 13:17:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:39,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:39,367 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] [2023-08-27 13:17:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 13:17:39,368 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:39,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 615746262, now seen corresponding path program 12 times [2023-08-27 13:17:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553347661] [2023-08-27 13:17:39,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553347661] [2023-08-27 13:17:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553347661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570673811] [2023-08-27 13:17:39,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 13:17:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:39,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:39,476 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) [2023-08-27 13:17:39,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 13:17:39,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 13:17:39,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:17:39,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:17:39,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:39,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570673811] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:39,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:17:39,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2023-08-27 13:17:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458830620] [2023-08-27 13:17:39,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:17:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:17:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 13:17:39,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:17:39,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 788 transitions, 15455 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:39,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:39,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:17:39,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:41,506 INFO L124 PetriNetUnfolderBase]: 5793/8450 cut-off events. [2023-08-27 13:17:41,506 INFO L125 PetriNetUnfolderBase]: For 187797/187865 co-relation queries the response was YES. [2023-08-27 13:17:41,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74285 conditions, 8450 events. 5793/8450 cut-off events. For 187797/187865 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 45662 event pairs, 884 based on Foata normal form. 59/8491 useless extension candidates. Maximal degree in co-relation 73811. Up to 4217 conditions per place. [2023-08-27 13:17:41,598 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 166 changer transitions 0/860 dead transitions. [2023-08-27 13:17:41,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 860 transitions, 17908 flow [2023-08-27 13:17:41,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:17:41,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:17:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 13:17:41,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 13:17:41,600 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 13:17:41,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 13:17:41,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:41,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 13:17:41,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:41,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:41,602 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:41,602 INFO L175 Difference]: Start difference. First operand has 249 places, 788 transitions, 15455 flow. Second operand 6 states and 548 transitions. [2023-08-27 13:17:41,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 860 transitions, 17908 flow [2023-08-27 13:17:42,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 860 transitions, 17634 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-27 13:17:42,930 INFO L231 Difference]: Finished difference. Result has 251 places, 788 transitions, 15523 flow [2023-08-27 13:17:42,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15181, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15523, PETRI_PLACES=251, PETRI_TRANSITIONS=788} [2023-08-27 13:17:42,931 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2023-08-27 13:17:42,931 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 788 transitions, 15523 flow [2023-08-27 13:17:42,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:42,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:42,931 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] [2023-08-27 13:17:42,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-27 13:17:43,137 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,SelfDestructingSolverStorable16 [2023-08-27 13:17:43,137 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:43,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1797543740, now seen corresponding path program 5 times [2023-08-27 13:17:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669504933] [2023-08-27 13:17:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:43,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:43,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669504933] [2023-08-27 13:17:43,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669504933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:43,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950604133] [2023-08-27 13:17:43,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:43,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:43,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 788 transitions, 15523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:43,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:43,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:43,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:45,292 INFO L124 PetriNetUnfolderBase]: 6225/9164 cut-off events. [2023-08-27 13:17:45,292 INFO L125 PetriNetUnfolderBase]: For 205281/205281 co-relation queries the response was YES. [2023-08-27 13:17:45,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80010 conditions, 9164 events. 6225/9164 cut-off events. For 205281/205281 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 50899 event pairs, 1292 based on Foata normal form. 56/9220 useless extension candidates. Maximal degree in co-relation 79522. Up to 7636 conditions per place. [2023-08-27 13:17:45,378 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 706 selfloop transitions, 193 changer transitions 10/909 dead transitions. [2023-08-27 13:17:45,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 909 transitions, 19164 flow [2023-08-27 13:17:45,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:45,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 13:17:45,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 13:17:45,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 13:17:45,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 13:17:45,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:45,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 13:17:45,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:45,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:45,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:45,381 INFO L175 Difference]: Start difference. First operand has 251 places, 788 transitions, 15523 flow. Second operand 7 states and 600 transitions. [2023-08-27 13:17:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 909 transitions, 19164 flow [2023-08-27 13:17:46,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 909 transitions, 18985 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 13:17:46,607 INFO L231 Difference]: Finished difference. Result has 259 places, 832 transitions, 17034 flow [2023-08-27 13:17:46,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15344, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17034, PETRI_PLACES=259, PETRI_TRANSITIONS=832} [2023-08-27 13:17:46,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2023-08-27 13:17:46,607 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 832 transitions, 17034 flow [2023-08-27 13:17:46,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:46,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:46,608 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] [2023-08-27 13:17:46,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 13:17:46,608 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:46,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:46,608 INFO L85 PathProgramCache]: Analyzing trace with hash 841650270, now seen corresponding path program 6 times [2023-08-27 13:17:46,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:46,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595003314] [2023-08-27 13:17:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:46,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595003314] [2023-08-27 13:17:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595003314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:46,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:46,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203893784] [2023-08-27 13:17:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:46,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:46,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:46,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:46,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 832 transitions, 17034 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:46,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:46,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:46,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:48,929 INFO L124 PetriNetUnfolderBase]: 6311/9358 cut-off events. [2023-08-27 13:17:48,929 INFO L125 PetriNetUnfolderBase]: For 213905/213905 co-relation queries the response was YES. [2023-08-27 13:17:48,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84251 conditions, 9358 events. 6311/9358 cut-off events. For 213905/213905 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 52841 event pairs, 1411 based on Foata normal form. 36/9394 useless extension candidates. Maximal degree in co-relation 83710. Up to 8204 conditions per place. [2023-08-27 13:17:49,020 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 723 selfloop transitions, 186 changer transitions 9/918 dead transitions. [2023-08-27 13:17:49,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 918 transitions, 20121 flow [2023-08-27 13:17:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2023-08-27 13:17:49,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481203007518797 [2023-08-27 13:17:49,021 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2023-08-27 13:17:49,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2023-08-27 13:17:49,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:49,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2023-08-27 13:17:49,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:49,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:49,023 INFO L175 Difference]: Start difference. First operand has 259 places, 832 transitions, 17034 flow. Second operand 7 states and 596 transitions. [2023-08-27 13:17:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 918 transitions, 20121 flow [2023-08-27 13:17:50,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 918 transitions, 19877 flow, removed 122 selfloop flow, removed 1 redundant places. [2023-08-27 13:17:50,562 INFO L231 Difference]: Finished difference. Result has 265 places, 849 transitions, 17677 flow [2023-08-27 13:17:50,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=16794, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17677, PETRI_PLACES=265, PETRI_TRANSITIONS=849} [2023-08-27 13:17:50,563 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2023-08-27 13:17:50,563 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 849 transitions, 17677 flow [2023-08-27 13:17:50,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:50,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:50,563 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] [2023-08-27 13:17:50,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 13:17:50,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:50,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash 42335346, now seen corresponding path program 7 times [2023-08-27 13:17:50,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:50,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613217040] [2023-08-27 13:17:50,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:50,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613217040] [2023-08-27 13:17:50,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613217040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:50,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:50,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:50,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374052697] [2023-08-27 13:17:50,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:50,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:50,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:50,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:50,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:50,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:50,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 849 transitions, 17677 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:50,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:50,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:50,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:52,810 INFO L124 PetriNetUnfolderBase]: 6318/9371 cut-off events. [2023-08-27 13:17:52,810 INFO L125 PetriNetUnfolderBase]: For 212713/212713 co-relation queries the response was YES. [2023-08-27 13:17:52,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84442 conditions, 9371 events. 6318/9371 cut-off events. For 212713/212713 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 52883 event pairs, 1061 based on Foata normal form. 18/9389 useless extension candidates. Maximal degree in co-relation 83998. Up to 5389 conditions per place. [2023-08-27 13:17:52,902 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 728 selfloop transitions, 209 changer transitions 0/937 dead transitions. [2023-08-27 13:17:52,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 937 transitions, 20518 flow [2023-08-27 13:17:52,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:52,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 13:17:52,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 13:17:52,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 13:17:52,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 13:17:52,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:52,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 13:17:52,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:52,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:52,905 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:52,905 INFO L175 Difference]: Start difference. First operand has 265 places, 849 transitions, 17677 flow. Second operand 7 states and 609 transitions. [2023-08-27 13:17:52,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 937 transitions, 20518 flow [2023-08-27 13:17:54,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 937 transitions, 20034 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-08-27 13:17:54,413 INFO L231 Difference]: Finished difference. Result has 268 places, 860 transitions, 17930 flow [2023-08-27 13:17:54,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17930, PETRI_PLACES=268, PETRI_TRANSITIONS=860} [2023-08-27 13:17:54,414 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2023-08-27 13:17:54,414 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 860 transitions, 17930 flow [2023-08-27 13:17:54,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:54,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:54,414 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] [2023-08-27 13:17:54,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 13:17:54,414 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:54,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:54,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1944771611, now seen corresponding path program 1 times [2023-08-27 13:17:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145661955] [2023-08-27 13:17:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:54,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:54,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145661955] [2023-08-27 13:17:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145661955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:17:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:17:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:17:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496032913] [2023-08-27 13:17:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:17:54,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:17:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:17:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:17:54,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:54,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 860 transitions, 17930 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:54,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:54,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:17:56,847 INFO L124 PetriNetUnfolderBase]: 6324/9416 cut-off events. [2023-08-27 13:17:56,847 INFO L125 PetriNetUnfolderBase]: For 217853/217853 co-relation queries the response was YES. [2023-08-27 13:17:56,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84978 conditions, 9416 events. 6324/9416 cut-off events. For 217853/217853 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 53586 event pairs, 1149 based on Foata normal form. 24/9440 useless extension candidates. Maximal degree in co-relation 84495. Up to 5389 conditions per place. [2023-08-27 13:17:56,940 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 758 selfloop transitions, 162 changer transitions 18/938 dead transitions. [2023-08-27 13:17:56,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 938 transitions, 20547 flow [2023-08-27 13:17:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:17:56,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:17:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2023-08-27 13:17:56,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45939849624060153 [2023-08-27 13:17:56,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2023-08-27 13:17:56,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2023-08-27 13:17:56,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:17:56,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2023-08-27 13:17:56,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:56,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:56,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:56,943 INFO L175 Difference]: Start difference. First operand has 268 places, 860 transitions, 17930 flow. Second operand 7 states and 611 transitions. [2023-08-27 13:17:56,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 938 transitions, 20547 flow [2023-08-27 13:17:58,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 938 transitions, 20113 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-27 13:17:58,546 INFO L231 Difference]: Finished difference. Result has 272 places, 857 transitions, 17771 flow [2023-08-27 13:17:58,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17500, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17771, PETRI_PLACES=272, PETRI_TRANSITIONS=857} [2023-08-27 13:17:58,547 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2023-08-27 13:17:58,547 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 857 transitions, 17771 flow [2023-08-27 13:17:58,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:58,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:17:58,548 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] [2023-08-27 13:17:58,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 13:17:58,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:17:58,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:17:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash 697226670, now seen corresponding path program 13 times [2023-08-27 13:17:58,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:17:58,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799154968] [2023-08-27 13:17:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:17:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:17:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:58,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:17:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799154968] [2023-08-27 13:17:58,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799154968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:17:58,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256859094] [2023-08-27 13:17:58,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 13:17:58,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:17:58,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:17:58,634 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) [2023-08-27 13:17:58,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 13:17:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:17:58,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:17:58,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:17:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:58,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:17:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:17:58,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256859094] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:17:58,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:17:58,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-08-27 13:17:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451187471] [2023-08-27 13:17:58,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:17:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 13:17:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:17:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 13:17:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 13:17:58,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:17:58,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 857 transitions, 17771 flow. Second operand has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:17:58,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:17:58,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:17:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:01,893 INFO L124 PetriNetUnfolderBase]: 7725/11238 cut-off events. [2023-08-27 13:18:01,893 INFO L125 PetriNetUnfolderBase]: For 266539/266539 co-relation queries the response was YES. [2023-08-27 13:18:01,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102554 conditions, 11238 events. 7725/11238 cut-off events. For 266539/266539 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 63374 event pairs, 1276 based on Foata normal form. 26/11264 useless extension candidates. Maximal degree in co-relation 102215. Up to 8823 conditions per place. [2023-08-27 13:18:02,015 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 873 selfloop transitions, 431 changer transitions 0/1304 dead transitions. [2023-08-27 13:18:02,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1304 transitions, 27860 flow [2023-08-27 13:18:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 13:18:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 13:18:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1783 transitions. [2023-08-27 13:18:02,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468671679197995 [2023-08-27 13:18:02,017 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1783 transitions. [2023-08-27 13:18:02,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1783 transitions. [2023-08-27 13:18:02,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:02,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1783 transitions. [2023-08-27 13:18:02,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.9047619047619) internal successors, (1783), 21 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:02,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:02,021 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:02,021 INFO L175 Difference]: Start difference. First operand has 272 places, 857 transitions, 17771 flow. Second operand 21 states and 1783 transitions. [2023-08-27 13:18:02,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1304 transitions, 27860 flow [2023-08-27 13:18:03,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1304 transitions, 27504 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 13:18:04,007 INFO L231 Difference]: Finished difference. Result has 294 places, 1087 transitions, 23630 flow [2023-08-27 13:18:04,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17437, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=23630, PETRI_PLACES=294, PETRI_TRANSITIONS=1087} [2023-08-27 13:18:04,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2023-08-27 13:18:04,007 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 1087 transitions, 23630 flow [2023-08-27 13:18:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:04,008 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] [2023-08-27 13:18:04,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 13:18:04,208 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,SelfDestructingSolverStorable21 [2023-08-27 13:18:04,208 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:04,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:04,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1256816458, now seen corresponding path program 14 times [2023-08-27 13:18:04,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:04,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496200316] [2023-08-27 13:18:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:04,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:04,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496200316] [2023-08-27 13:18:04,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496200316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:04,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:04,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:04,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001661829] [2023-08-27 13:18:04,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:04,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:04,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:04,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:04,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:04,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:04,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1087 transitions, 23630 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:04,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:04,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:07,342 INFO L124 PetriNetUnfolderBase]: 7765/11310 cut-off events. [2023-08-27 13:18:07,342 INFO L125 PetriNetUnfolderBase]: For 288151/288151 co-relation queries the response was YES. [2023-08-27 13:18:07,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107786 conditions, 11310 events. 7765/11310 cut-off events. For 288151/288151 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63782 event pairs, 1525 based on Foata normal form. 16/11326 useless extension candidates. Maximal degree in co-relation 107315. Up to 9886 conditions per place. [2023-08-27 13:18:07,464 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 918 selfloop transitions, 232 changer transitions 0/1150 dead transitions. [2023-08-27 13:18:07,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1150 transitions, 26712 flow [2023-08-27 13:18:07,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:07,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 13:18:07,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 13:18:07,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 13:18:07,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 13:18:07,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:07,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 13:18:07,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:07,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:07,470 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:07,470 INFO L175 Difference]: Start difference. First operand has 294 places, 1087 transitions, 23630 flow. Second operand 7 states and 607 transitions. [2023-08-27 13:18:07,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1150 transitions, 26712 flow [2023-08-27 13:18:09,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1150 transitions, 25702 flow, removed 411 selfloop flow, removed 2 redundant places. [2023-08-27 13:18:09,941 INFO L231 Difference]: Finished difference. Result has 299 places, 1091 transitions, 23229 flow [2023-08-27 13:18:09,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22620, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23229, PETRI_PLACES=299, PETRI_TRANSITIONS=1091} [2023-08-27 13:18:09,942 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2023-08-27 13:18:09,942 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 1091 transitions, 23229 flow [2023-08-27 13:18:09,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:09,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:09,942 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] [2023-08-27 13:18:09,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 13:18:09,942 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:09,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1871647724, now seen corresponding path program 15 times [2023-08-27 13:18:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:09,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729590559] [2023-08-27 13:18:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:10,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:10,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729590559] [2023-08-27 13:18:10,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729590559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:10,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:10,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:10,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136134054] [2023-08-27 13:18:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:10,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:10,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:10,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:10,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:10,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1091 transitions, 23229 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:10,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:10,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:10,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:12,840 INFO L124 PetriNetUnfolderBase]: 7766/11313 cut-off events. [2023-08-27 13:18:12,841 INFO L125 PetriNetUnfolderBase]: For 280295/280295 co-relation queries the response was YES. [2023-08-27 13:18:12,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105467 conditions, 11313 events. 7766/11313 cut-off events. For 280295/280295 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63795 event pairs, 1590 based on Foata normal form. 2/11315 useless extension candidates. Maximal degree in co-relation 104995. Up to 10314 conditions per place. [2023-08-27 13:18:12,968 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 917 selfloop transitions, 203 changer transitions 3/1123 dead transitions. [2023-08-27 13:18:12,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1123 transitions, 25865 flow [2023-08-27 13:18:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 13:18:12,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 13:18:12,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 13:18:12,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 13:18:12,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:12,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 13:18:12,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:12,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:12,972 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:12,972 INFO L175 Difference]: Start difference. First operand has 299 places, 1091 transitions, 23229 flow. Second operand 7 states and 590 transitions. [2023-08-27 13:18:12,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1123 transitions, 25865 flow [2023-08-27 13:18:15,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1123 transitions, 25391 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 13:18:15,314 INFO L231 Difference]: Finished difference. Result has 302 places, 1097 transitions, 23379 flow [2023-08-27 13:18:15,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22769, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23379, PETRI_PLACES=302, PETRI_TRANSITIONS=1097} [2023-08-27 13:18:15,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2023-08-27 13:18:15,315 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 1097 transitions, 23379 flow [2023-08-27 13:18:15,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:15,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:15,315 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] [2023-08-27 13:18:15,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 13:18:15,315 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:15,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:15,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1698282134, now seen corresponding path program 16 times [2023-08-27 13:18:15,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:15,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397453290] [2023-08-27 13:18:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:15,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397453290] [2023-08-27 13:18:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397453290] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508824417] [2023-08-27 13:18:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:15,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:15,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:15,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1097 transitions, 23379 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:15,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:15,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:15,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:18,311 INFO L124 PetriNetUnfolderBase]: 7769/11318 cut-off events. [2023-08-27 13:18:18,311 INFO L125 PetriNetUnfolderBase]: For 277529/277529 co-relation queries the response was YES. [2023-08-27 13:18:18,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105487 conditions, 11318 events. 7769/11318 cut-off events. For 277529/277529 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63828 event pairs, 1589 based on Foata normal form. 2/11320 useless extension candidates. Maximal degree in co-relation 105013. Up to 10316 conditions per place. [2023-08-27 13:18:18,437 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 936 selfloop transitions, 203 changer transitions 3/1142 dead transitions. [2023-08-27 13:18:18,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1142 transitions, 26198 flow [2023-08-27 13:18:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 13:18:18,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 13:18:18,438 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 13:18:18,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 13:18:18,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:18,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 13:18:18,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:18,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:18,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:18,440 INFO L175 Difference]: Start difference. First operand has 302 places, 1097 transitions, 23379 flow. Second operand 7 states and 588 transitions. [2023-08-27 13:18:18,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1142 transitions, 26198 flow [2023-08-27 13:18:20,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1142 transitions, 25760 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-27 13:18:20,805 INFO L231 Difference]: Finished difference. Result has 306 places, 1101 transitions, 23487 flow [2023-08-27 13:18:20,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22945, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23487, PETRI_PLACES=306, PETRI_TRANSITIONS=1101} [2023-08-27 13:18:20,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 277 predicate places. [2023-08-27 13:18:20,806 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1101 transitions, 23487 flow [2023-08-27 13:18:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:20,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:20,807 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] [2023-08-27 13:18:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 13:18:20,807 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:20,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:20,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1022357110, now seen corresponding path program 17 times [2023-08-27 13:18:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071785777] [2023-08-27 13:18:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:20,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071785777] [2023-08-27 13:18:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071785777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851527844] [2023-08-27 13:18:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:20,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1101 transitions, 23487 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:23,913 INFO L124 PetriNetUnfolderBase]: 7776/11331 cut-off events. [2023-08-27 13:18:23,913 INFO L125 PetriNetUnfolderBase]: For 275698/275698 co-relation queries the response was YES. [2023-08-27 13:18:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105685 conditions, 11331 events. 7776/11331 cut-off events. For 275698/275698 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 64003 event pairs, 1595 based on Foata normal form. 8/11339 useless extension candidates. Maximal degree in co-relation 105209. Up to 10320 conditions per place. [2023-08-27 13:18:24,046 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 946 selfloop transitions, 195 changer transitions 1/1142 dead transitions. [2023-08-27 13:18:24,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1142 transitions, 26241 flow [2023-08-27 13:18:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 13:18:24,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 13:18:24,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 13:18:24,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 13:18:24,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:24,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 13:18:24,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:24,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:24,049 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:24,049 INFO L175 Difference]: Start difference. First operand has 306 places, 1101 transitions, 23487 flow. Second operand 7 states and 598 transitions. [2023-08-27 13:18:24,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1142 transitions, 26241 flow [2023-08-27 13:18:26,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1142 transitions, 25819 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 13:18:26,416 INFO L231 Difference]: Finished difference. Result has 309 places, 1108 transitions, 23643 flow [2023-08-27 13:18:26,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23079, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23643, PETRI_PLACES=309, PETRI_TRANSITIONS=1108} [2023-08-27 13:18:26,417 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2023-08-27 13:18:26,417 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1108 transitions, 23643 flow [2023-08-27 13:18:26,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:26,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:26,417 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] [2023-08-27 13:18:26,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 13:18:26,417 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:26,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:26,417 INFO L85 PathProgramCache]: Analyzing trace with hash -976852294, now seen corresponding path program 18 times [2023-08-27 13:18:26,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:26,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141325416] [2023-08-27 13:18:26,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:26,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:26,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:26,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141325416] [2023-08-27 13:18:26,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141325416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:26,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:26,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120305961] [2023-08-27 13:18:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:26,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:26,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:26,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:26,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1108 transitions, 23643 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:26,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:26,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:26,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:29,409 INFO L124 PetriNetUnfolderBase]: 7779/11331 cut-off events. [2023-08-27 13:18:29,409 INFO L125 PetriNetUnfolderBase]: For 279766/279766 co-relation queries the response was YES. [2023-08-27 13:18:29,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105767 conditions, 11331 events. 7779/11331 cut-off events. For 279766/279766 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 63890 event pairs, 1598 based on Foata normal form. 2/11333 useless extension candidates. Maximal degree in co-relation 105289. Up to 10326 conditions per place. [2023-08-27 13:18:29,538 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 934 selfloop transitions, 197 changer transitions 2/1133 dead transitions. [2023-08-27 13:18:29,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1133 transitions, 26171 flow [2023-08-27 13:18:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 13:18:29,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 13:18:29,539 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 13:18:29,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 13:18:29,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:29,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 13:18:29,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:29,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:29,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:29,541 INFO L175 Difference]: Start difference. First operand has 309 places, 1108 transitions, 23643 flow. Second operand 7 states and 590 transitions. [2023-08-27 13:18:29,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1133 transitions, 26171 flow [2023-08-27 13:18:31,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1133 transitions, 25942 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 13:18:31,856 INFO L231 Difference]: Finished difference. Result has 313 places, 1110 transitions, 23871 flow [2023-08-27 13:18:31,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23418, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23871, PETRI_PLACES=313, PETRI_TRANSITIONS=1110} [2023-08-27 13:18:31,857 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2023-08-27 13:18:31,857 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1110 transitions, 23871 flow [2023-08-27 13:18:31,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:31,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:31,857 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] [2023-08-27 13:18:31,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 13:18:31,857 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:31,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1615237636, now seen corresponding path program 19 times [2023-08-27 13:18:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:31,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225828602] [2023-08-27 13:18:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:31,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225828602] [2023-08-27 13:18:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225828602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835043991] [2023-08-27 13:18:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:31,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:31,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:31,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:31,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1110 transitions, 23871 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:31,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:31,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:31,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:34,901 INFO L124 PetriNetUnfolderBase]: 7802/11370 cut-off events. [2023-08-27 13:18:34,901 INFO L125 PetriNetUnfolderBase]: For 284218/284218 co-relation queries the response was YES. [2023-08-27 13:18:34,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106183 conditions, 11370 events. 7802/11370 cut-off events. For 284218/284218 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 64295 event pairs, 1594 based on Foata normal form. 18/11388 useless extension candidates. Maximal degree in co-relation 105705. Up to 10314 conditions per place. [2023-08-27 13:18:35,030 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 942 selfloop transitions, 209 changer transitions 0/1151 dead transitions. [2023-08-27 13:18:35,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1151 transitions, 26638 flow [2023-08-27 13:18:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 13:18:35,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 13:18:35,031 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 13:18:35,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 13:18:35,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:35,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 13:18:35,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:35,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:35,033 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:35,033 INFO L175 Difference]: Start difference. First operand has 313 places, 1110 transitions, 23871 flow. Second operand 7 states and 600 transitions. [2023-08-27 13:18:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1151 transitions, 26638 flow [2023-08-27 13:18:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1151 transitions, 26249 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 13:18:37,473 INFO L231 Difference]: Finished difference. Result has 317 places, 1116 transitions, 24055 flow [2023-08-27 13:18:37,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23482, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24055, PETRI_PLACES=317, PETRI_TRANSITIONS=1116} [2023-08-27 13:18:37,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2023-08-27 13:18:37,474 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 1116 transitions, 24055 flow [2023-08-27 13:18:37,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:37,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:37,475 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] [2023-08-27 13:18:37,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 13:18:37,475 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:37,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1024150510, now seen corresponding path program 20 times [2023-08-27 13:18:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930269986] [2023-08-27 13:18:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930269986] [2023-08-27 13:18:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930269986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:37,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635670748] [2023-08-27 13:18:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:37,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:37,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1116 transitions, 24055 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:37,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:37,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:37,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:40,516 INFO L124 PetriNetUnfolderBase]: 7818/11398 cut-off events. [2023-08-27 13:18:40,516 INFO L125 PetriNetUnfolderBase]: For 288318/288318 co-relation queries the response was YES. [2023-08-27 13:18:40,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106641 conditions, 11398 events. 7818/11398 cut-off events. For 288318/288318 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 64557 event pairs, 1606 based on Foata normal form. 12/11410 useless extension candidates. Maximal degree in co-relation 106161. Up to 10378 conditions per place. [2023-08-27 13:18:40,648 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 947 selfloop transitions, 200 changer transitions 0/1147 dead transitions. [2023-08-27 13:18:40,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1147 transitions, 26659 flow [2023-08-27 13:18:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 13:18:40,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 13:18:40,650 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 13:18:40,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 13:18:40,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:40,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 13:18:40,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:40,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:40,651 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:40,651 INFO L175 Difference]: Start difference. First operand has 317 places, 1116 transitions, 24055 flow. Second operand 7 states and 594 transitions. [2023-08-27 13:18:40,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1147 transitions, 26659 flow [2023-08-27 13:18:43,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1147 transitions, 26251 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 13:18:43,049 INFO L231 Difference]: Finished difference. Result has 320 places, 1119 transitions, 24128 flow [2023-08-27 13:18:43,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23647, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24128, PETRI_PLACES=320, PETRI_TRANSITIONS=1119} [2023-08-27 13:18:43,050 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2023-08-27 13:18:43,050 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1119 transitions, 24128 flow [2023-08-27 13:18:43,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:43,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:43,051 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] [2023-08-27 13:18:43,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 13:18:43,051 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:43,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash -486260694, now seen corresponding path program 21 times [2023-08-27 13:18:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:43,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160050946] [2023-08-27 13:18:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:43,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160050946] [2023-08-27 13:18:43,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160050946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:43,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662878258] [2023-08-27 13:18:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:43,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:43,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:43,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:43,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1119 transitions, 24128 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:43,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:43,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:46,137 INFO L124 PetriNetUnfolderBase]: 7828/11416 cut-off events. [2023-08-27 13:18:46,137 INFO L125 PetriNetUnfolderBase]: For 289673/289673 co-relation queries the response was YES. [2023-08-27 13:18:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106846 conditions, 11416 events. 7828/11416 cut-off events. For 289673/289673 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 64728 event pairs, 1608 based on Foata normal form. 8/11424 useless extension candidates. Maximal degree in co-relation 106365. Up to 10402 conditions per place. [2023-08-27 13:18:46,270 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 949 selfloop transitions, 199 changer transitions 0/1148 dead transitions. [2023-08-27 13:18:46,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1148 transitions, 26689 flow [2023-08-27 13:18:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:18:46,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:18:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 13:18:46,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 13:18:46,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 13:18:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 13:18:46,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:46,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 13:18:46,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:46,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:46,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:46,273 INFO L175 Difference]: Start difference. First operand has 320 places, 1119 transitions, 24128 flow. Second operand 7 states and 597 transitions. [2023-08-27 13:18:46,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1148 transitions, 26689 flow [2023-08-27 13:18:48,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1148 transitions, 26285 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 13:18:48,612 INFO L231 Difference]: Finished difference. Result has 322 places, 1120 transitions, 24153 flow [2023-08-27 13:18:48,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23724, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24153, PETRI_PLACES=322, PETRI_TRANSITIONS=1120} [2023-08-27 13:18:48,613 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 293 predicate places. [2023-08-27 13:18:48,613 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 1120 transitions, 24153 flow [2023-08-27 13:18:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:48,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:48,613 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] [2023-08-27 13:18:48,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 13:18:48,613 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:48,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:48,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1826476000, now seen corresponding path program 22 times [2023-08-27 13:18:48,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:48,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343995727] [2023-08-27 13:18:48,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:48,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343995727] [2023-08-27 13:18:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343995727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:18:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923706870] [2023-08-27 13:18:48,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 13:18:48,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:18:48,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:18:48,699 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) [2023-08-27 13:18:48,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 13:18:48,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 13:18:48,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:18:48,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:18:48,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:18:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:48,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:18:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:49,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923706870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:18:49,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:18:49,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 13:18:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187604731] [2023-08-27 13:18:49,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:18:49,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 13:18:49,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 13:18:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-08-27 13:18:49,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 13:18:49,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 1120 transitions, 24153 flow. Second operand has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:49,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:49,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 13:18:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:18:53,949 INFO L124 PetriNetUnfolderBase]: 10059/14877 cut-off events. [2023-08-27 13:18:53,949 INFO L125 PetriNetUnfolderBase]: For 376717/376717 co-relation queries the response was YES. [2023-08-27 13:18:54,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139471 conditions, 14877 events. 10059/14877 cut-off events. For 376717/376717 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90710 event pairs, 551 based on Foata normal form. 80/14957 useless extension candidates. Maximal degree in co-relation 139004. Up to 5517 conditions per place. [2023-08-27 13:18:54,224 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 970 selfloop transitions, 1024 changer transitions 1/1995 dead transitions. [2023-08-27 13:18:54,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1995 transitions, 42882 flow [2023-08-27 13:18:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-27 13:18:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-27 13:18:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3369 transitions. [2023-08-27 13:18:54,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324775353016688 [2023-08-27 13:18:54,227 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3369 transitions. [2023-08-27 13:18:54,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3369 transitions. [2023-08-27 13:18:54,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:18:54,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3369 transitions. [2023-08-27 13:18:54,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 82.17073170731707) internal successors, (3369), 41 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:54,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:54,234 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:54,234 INFO L175 Difference]: Start difference. First operand has 322 places, 1120 transitions, 24153 flow. Second operand 41 states and 3369 transitions. [2023-08-27 13:18:54,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1995 transitions, 42882 flow [2023-08-27 13:18:57,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1995 transitions, 42431 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 13:18:57,987 INFO L231 Difference]: Finished difference. Result has 381 places, 1498 transitions, 35977 flow [2023-08-27 13:18:57,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23669, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=35977, PETRI_PLACES=381, PETRI_TRANSITIONS=1498} [2023-08-27 13:18:57,988 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 352 predicate places. [2023-08-27 13:18:57,988 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1498 transitions, 35977 flow [2023-08-27 13:18:57,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:57,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:18:57,988 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] [2023-08-27 13:18:57,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 13:18:58,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 13:18:58,193 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:18:58,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:18:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1329227984, now seen corresponding path program 23 times [2023-08-27 13:18:58,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:18:58,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270589825] [2023-08-27 13:18:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:18:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:18:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:18:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:18:58,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:18:58,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270589825] [2023-08-27 13:18:58,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270589825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:18:58,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:18:58,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:18:58,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976071444] [2023-08-27 13:18:58,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:18:58,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:18:58,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:18:58,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:18:58,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:18:58,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:18:58,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1498 transitions, 35977 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:18:58,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:18:58,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:18:58,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:19:03,136 INFO L124 PetriNetUnfolderBase]: 10056/14870 cut-off events. [2023-08-27 13:19:03,137 INFO L125 PetriNetUnfolderBase]: For 479780/479780 co-relation queries the response was YES. [2023-08-27 13:19:03,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151702 conditions, 14870 events. 10056/14870 cut-off events. For 479780/479780 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90522 event pairs, 2072 based on Foata normal form. 2/14872 useless extension candidates. Maximal degree in co-relation 151174. Up to 13790 conditions per place. [2023-08-27 13:19:03,336 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1294 selfloop transitions, 224 changer transitions 2/1520 dead transitions. [2023-08-27 13:19:03,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1520 transitions, 39215 flow [2023-08-27 13:19:03,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:19:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:19:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 13:19:03,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 13:19:03,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 13:19:03,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 13:19:03,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:19:03,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 13:19:03,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:03,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:03,338 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:03,338 INFO L175 Difference]: Start difference. First operand has 381 places, 1498 transitions, 35977 flow. Second operand 7 states and 588 transitions. [2023-08-27 13:19:03,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1520 transitions, 39215 flow [2023-08-27 13:19:08,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1520 transitions, 37344 flow, removed 608 selfloop flow, removed 4 redundant places. [2023-08-27 13:19:09,008 INFO L231 Difference]: Finished difference. Result has 384 places, 1498 transitions, 34553 flow [2023-08-27 13:19:09,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34069, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34553, PETRI_PLACES=384, PETRI_TRANSITIONS=1498} [2023-08-27 13:19:09,009 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 355 predicate places. [2023-08-27 13:19:09,010 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1498 transitions, 34553 flow [2023-08-27 13:19:09,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:09,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:19:09,010 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] [2023-08-27 13:19:09,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 13:19:09,010 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:19:09,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:19:09,010 INFO L85 PathProgramCache]: Analyzing trace with hash -595682358, now seen corresponding path program 24 times [2023-08-27 13:19:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:19:09,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537525924] [2023-08-27 13:19:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:19:09,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:19:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:19:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:19:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537525924] [2023-08-27 13:19:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537525924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:19:09,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:19:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:19:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50351788] [2023-08-27 13:19:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:19:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:19:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:19:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:19:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:19:09,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:19:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1498 transitions, 34553 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:19:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:19:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:19:13,946 INFO L124 PetriNetUnfolderBase]: 10071/14895 cut-off events. [2023-08-27 13:19:13,946 INFO L125 PetriNetUnfolderBase]: For 458319/458319 co-relation queries the response was YES. [2023-08-27 13:19:14,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147416 conditions, 14895 events. 10071/14895 cut-off events. For 458319/458319 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 90716 event pairs, 2069 based on Foata normal form. 12/14907 useless extension candidates. Maximal degree in co-relation 146888. Up to 13800 conditions per place. [2023-08-27 13:19:14,243 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1316 selfloop transitions, 225 changer transitions 0/1541 dead transitions. [2023-08-27 13:19:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1541 transitions, 38122 flow [2023-08-27 13:19:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:19:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:19:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2023-08-27 13:19:14,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443609022556391 [2023-08-27 13:19:14,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2023-08-27 13:19:14,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2023-08-27 13:19:14,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:19:14,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2023-08-27 13:19:14,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.42857142857143) internal successors, (591), 7 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:14,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:14,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:14,247 INFO L175 Difference]: Start difference. First operand has 384 places, 1498 transitions, 34553 flow. Second operand 7 states and 591 transitions. [2023-08-27 13:19:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1541 transitions, 38122 flow [2023-08-27 13:19:19,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1541 transitions, 37858 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 13:19:20,015 INFO L231 Difference]: Finished difference. Result has 387 places, 1501 transitions, 34835 flow [2023-08-27 13:19:20,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34289, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34835, PETRI_PLACES=387, PETRI_TRANSITIONS=1501} [2023-08-27 13:19:20,016 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 358 predicate places. [2023-08-27 13:19:20,016 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 1501 transitions, 34835 flow [2023-08-27 13:19:20,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:20,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:19:20,017 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] [2023-08-27 13:19:20,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 13:19:20,017 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:19:20,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:19:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 671774820, now seen corresponding path program 25 times [2023-08-27 13:19:20,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:19:20,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200590040] [2023-08-27 13:19:20,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:19:20,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:19:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:19:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:20,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:19:20,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200590040] [2023-08-27 13:19:20,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200590040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:19:20,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:19:20,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:19:20,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631415557] [2023-08-27 13:19:20,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:19:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:19:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:19:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:19:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:19:20,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:19:20,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1501 transitions, 34835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:20,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:19:20,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:19:20,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:19:25,024 INFO L124 PetriNetUnfolderBase]: 10087/14923 cut-off events. [2023-08-27 13:19:25,024 INFO L125 PetriNetUnfolderBase]: For 469837/469837 co-relation queries the response was YES. [2023-08-27 13:19:25,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147993 conditions, 14923 events. 10087/14923 cut-off events. For 469837/469837 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 91005 event pairs, 2076 based on Foata normal form. 12/14935 useless extension candidates. Maximal degree in co-relation 147464. Up to 13828 conditions per place. [2023-08-27 13:19:25,222 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1304 selfloop transitions, 227 changer transitions 0/1531 dead transitions. [2023-08-27 13:19:25,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1531 transitions, 38243 flow [2023-08-27 13:19:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:19:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:19:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 13:19:25,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 13:19:25,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 13:19:25,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 13:19:25,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:19:25,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 13:19:25,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:25,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:25,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:25,225 INFO L175 Difference]: Start difference. First operand has 387 places, 1501 transitions, 34835 flow. Second operand 7 states and 592 transitions. [2023-08-27 13:19:25,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1531 transitions, 38243 flow [2023-08-27 13:19:31,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1531 transitions, 37783 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-27 13:19:31,250 INFO L231 Difference]: Finished difference. Result has 389 places, 1504 transitions, 34931 flow [2023-08-27 13:19:31,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34375, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34931, PETRI_PLACES=389, PETRI_TRANSITIONS=1504} [2023-08-27 13:19:31,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-08-27 13:19:31,251 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1504 transitions, 34931 flow [2023-08-27 13:19:31,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:31,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:19:31,251 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] [2023-08-27 13:19:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 13:19:31,251 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:19:31,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:19:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1154295143, now seen corresponding path program 2 times [2023-08-27 13:19:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:19:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717279668] [2023-08-27 13:19:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:19:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:19:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:19:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:19:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717279668] [2023-08-27 13:19:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717279668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:19:31,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:19:31,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:19:31,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17882223] [2023-08-27 13:19:31,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:19:31,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:19:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:19:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:19:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:19:31,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:19:31,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1504 transitions, 34931 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:31,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:19:31,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:19:31,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:19:36,356 INFO L124 PetriNetUnfolderBase]: 10101/15004 cut-off events. [2023-08-27 13:19:36,356 INFO L125 PetriNetUnfolderBase]: For 473234/473234 co-relation queries the response was YES. [2023-08-27 13:19:36,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148459 conditions, 15004 events. 10101/15004 cut-off events. For 473234/473234 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 92415 event pairs, 2063 based on Foata normal form. 36/15040 useless extension candidates. Maximal degree in co-relation 147929. Up to 13710 conditions per place. [2023-08-27 13:19:36,552 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1327 selfloop transitions, 217 changer transitions 11/1555 dead transitions. [2023-08-27 13:19:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1555 transitions, 38617 flow [2023-08-27 13:19:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:19:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:19:36,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 13:19:36,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 13:19:36,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 13:19:36,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 13:19:36,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:19:36,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 13:19:36,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:36,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:36,555 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:36,555 INFO L175 Difference]: Start difference. First operand has 389 places, 1504 transitions, 34931 flow. Second operand 7 states and 605 transitions. [2023-08-27 13:19:36,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1555 transitions, 38617 flow [2023-08-27 13:19:42,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1555 transitions, 38147 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 13:19:42,289 INFO L231 Difference]: Finished difference. Result has 393 places, 1506 transitions, 34982 flow [2023-08-27 13:19:42,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34461, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34982, PETRI_PLACES=393, PETRI_TRANSITIONS=1506} [2023-08-27 13:19:42,290 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 364 predicate places. [2023-08-27 13:19:42,290 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1506 transitions, 34982 flow [2023-08-27 13:19:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:42,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:19:42,291 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] [2023-08-27 13:19:42,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 13:19:42,291 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:19:42,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:19:42,291 INFO L85 PathProgramCache]: Analyzing trace with hash -595960386, now seen corresponding path program 8 times [2023-08-27 13:19:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:19:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273455250] [2023-08-27 13:19:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:19:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:19:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:19:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:19:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273455250] [2023-08-27 13:19:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273455250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:19:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:19:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:19:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858430741] [2023-08-27 13:19:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:19:42,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:19:42,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:19:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:19:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:19:42,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:19:42,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1506 transitions, 34982 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:42,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:19:42,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:19:42,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:19:47,712 INFO L124 PetriNetUnfolderBase]: 10440/15550 cut-off events. [2023-08-27 13:19:47,712 INFO L125 PetriNetUnfolderBase]: For 484980/484980 co-relation queries the response was YES. [2023-08-27 13:19:47,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153349 conditions, 15550 events. 10440/15550 cut-off events. For 484980/484980 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 96496 event pairs, 1623 based on Foata normal form. 14/15564 useless extension candidates. Maximal degree in co-relation 152996. Up to 8234 conditions per place. [2023-08-27 13:19:47,921 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1033 selfloop transitions, 576 changer transitions 0/1609 dead transitions. [2023-08-27 13:19:47,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1609 transitions, 39802 flow [2023-08-27 13:19:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:19:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:19:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 864 transitions. [2023-08-27 13:19:47,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-27 13:19:47,923 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 864 transitions. [2023-08-27 13:19:47,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 864 transitions. [2023-08-27 13:19:47,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:19:47,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 864 transitions. [2023-08-27 13:19:47,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.4) internal successors, (864), 10 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:47,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:47,925 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:47,925 INFO L175 Difference]: Start difference. First operand has 393 places, 1506 transitions, 34982 flow. Second operand 10 states and 864 transitions. [2023-08-27 13:19:47,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1609 transitions, 39802 flow [2023-08-27 13:19:54,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1609 transitions, 39315 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-27 13:19:54,346 INFO L231 Difference]: Finished difference. Result has 394 places, 1532 transitions, 37204 flow [2023-08-27 13:19:54,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34473, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37204, PETRI_PLACES=394, PETRI_TRANSITIONS=1532} [2023-08-27 13:19:54,347 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 365 predicate places. [2023-08-27 13:19:54,347 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1532 transitions, 37204 flow [2023-08-27 13:19:54,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:54,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:19:54,347 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] [2023-08-27 13:19:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 13:19:54,347 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:19:54,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:19:54,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1265429916, now seen corresponding path program 9 times [2023-08-27 13:19:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:19:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182414410] [2023-08-27 13:19:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:19:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:19:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:19:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:19:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182414410] [2023-08-27 13:19:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182414410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:19:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463945181] [2023-08-27 13:19:54,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 13:19:54,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:19:54,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:19:54,436 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:19:54,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 13:19:54,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 13:19:54,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:19:54,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:19:54,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:19:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:54,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:19:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:19:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463945181] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:19:54,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:19:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-08-27 13:19:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037152393] [2023-08-27 13:19:54,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:19:54,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 13:19:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:19:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 13:19:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-08-27 13:19:54,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 13:19:54,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1532 transitions, 37204 flow. Second operand has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:19:54,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:19:54,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 13:19:54,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:20:01,010 INFO L124 PetriNetUnfolderBase]: 11485/16959 cut-off events. [2023-08-27 13:20:01,010 INFO L125 PetriNetUnfolderBase]: For 598417/598417 co-relation queries the response was YES. [2023-08-27 13:20:01,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172710 conditions, 16959 events. 11485/16959 cut-off events. For 598417/598417 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 105218 event pairs, 1755 based on Foata normal form. 108/17067 useless extension candidates. Maximal degree in co-relation 171959. Up to 9241 conditions per place. [2023-08-27 13:20:01,238 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 961 selfloop transitions, 957 changer transitions 0/1918 dead transitions. [2023-08-27 13:20:01,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1918 transitions, 47931 flow [2023-08-27 13:20:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 13:20:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 13:20:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2286 transitions. [2023-08-27 13:20:01,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42969924812030075 [2023-08-27 13:20:01,240 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2286 transitions. [2023-08-27 13:20:01,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2286 transitions. [2023-08-27 13:20:01,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:20:01,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2286 transitions. [2023-08-27 13:20:01,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.64285714285714) internal successors, (2286), 28 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:01,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:01,245 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:01,245 INFO L175 Difference]: Start difference. First operand has 394 places, 1532 transitions, 37204 flow. Second operand 28 states and 2286 transitions. [2023-08-27 13:20:01,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1918 transitions, 47931 flow [2023-08-27 13:20:08,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1918 transitions, 47931 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 13:20:08,963 INFO L231 Difference]: Finished difference. Result has 437 places, 1725 transitions, 44778 flow [2023-08-27 13:20:08,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=37204, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=775, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=44778, PETRI_PLACES=437, PETRI_TRANSITIONS=1725} [2023-08-27 13:20:08,964 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 408 predicate places. [2023-08-27 13:20:08,964 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1725 transitions, 44778 flow [2023-08-27 13:20:08,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:08,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:20:08,964 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] [2023-08-27 13:20:08,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 13:20:09,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:20:09,165 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:20:09,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:20:09,165 INFO L85 PathProgramCache]: Analyzing trace with hash -483232915, now seen corresponding path program 3 times [2023-08-27 13:20:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:20:09,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391864592] [2023-08-27 13:20:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:20:09,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:20:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:20:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:09,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:20:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391864592] [2023-08-27 13:20:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391864592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:20:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:20:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:20:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387417296] [2023-08-27 13:20:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:20:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:20:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:20:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:20:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:20:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:20:09,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1725 transitions, 44778 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:09,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:20:09,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:20:09,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:20:15,770 INFO L124 PetriNetUnfolderBase]: 11513/17003 cut-off events. [2023-08-27 13:20:15,770 INFO L125 PetriNetUnfolderBase]: For 657393/657393 co-relation queries the response was YES. [2023-08-27 13:20:15,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183316 conditions, 17003 events. 11513/17003 cut-off events. For 657393/657393 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 105368 event pairs, 2349 based on Foata normal form. 16/17019 useless extension candidates. Maximal degree in co-relation 182520. Up to 15682 conditions per place. [2023-08-27 13:20:16,016 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1505 selfloop transitions, 259 changer transitions 0/1764 dead transitions. [2023-08-27 13:20:16,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1764 transitions, 48800 flow [2023-08-27 13:20:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:20:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:20:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 13:20:16,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 13:20:16,017 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 13:20:16,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 13:20:16,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:20:16,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 13:20:16,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:16,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:16,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:16,019 INFO L175 Difference]: Start difference. First operand has 437 places, 1725 transitions, 44778 flow. Second operand 7 states and 599 transitions. [2023-08-27 13:20:16,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1764 transitions, 48800 flow [2023-08-27 13:20:25,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1764 transitions, 47060 flow, removed 565 selfloop flow, removed 7 redundant places. [2023-08-27 13:20:25,578 INFO L231 Difference]: Finished difference. Result has 438 places, 1732 transitions, 43792 flow [2023-08-27 13:20:25,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43038, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43792, PETRI_PLACES=438, PETRI_TRANSITIONS=1732} [2023-08-27 13:20:25,579 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 409 predicate places. [2023-08-27 13:20:25,579 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 1732 transitions, 43792 flow [2023-08-27 13:20:25,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:25,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:20:25,579 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] [2023-08-27 13:20:25,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 13:20:25,579 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:20:25,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:20:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -167278109, now seen corresponding path program 4 times [2023-08-27 13:20:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:20:25,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49998440] [2023-08-27 13:20:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:20:25,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:20:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:20:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:25,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:20:25,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49998440] [2023-08-27 13:20:25,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49998440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:20:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:20:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:20:25,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443252312] [2023-08-27 13:20:25,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:20:25,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:20:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:20:25,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:20:25,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:20:25,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:20:25,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1732 transitions, 43792 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:25,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:20:25,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:20:25,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:20:32,296 INFO L124 PetriNetUnfolderBase]: 11527/17084 cut-off events. [2023-08-27 13:20:32,296 INFO L125 PetriNetUnfolderBase]: For 621799/621799 co-relation queries the response was YES. [2023-08-27 13:20:32,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178609 conditions, 17084 events. 11527/17084 cut-off events. For 621799/621799 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106685 event pairs, 2395 based on Foata normal form. 36/17120 useless extension candidates. Maximal degree in co-relation 177811. Up to 15782 conditions per place. [2023-08-27 13:20:32,546 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1524 selfloop transitions, 237 changer transitions 14/1775 dead transitions. [2023-08-27 13:20:32,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1775 transitions, 47721 flow [2023-08-27 13:20:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:20:32,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:20:32,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 13:20:32,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 13:20:32,547 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 13:20:32,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 13:20:32,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:20:32,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 13:20:32,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:32,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:32,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:32,549 INFO L175 Difference]: Start difference. First operand has 438 places, 1732 transitions, 43792 flow. Second operand 7 states and 603 transitions. [2023-08-27 13:20:32,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 1775 transitions, 47721 flow [2023-08-27 13:20:41,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1775 transitions, 46881 flow, removed 167 selfloop flow, removed 4 redundant places. [2023-08-27 13:20:41,484 INFO L231 Difference]: Finished difference. Result has 442 places, 1727 transitions, 43318 flow [2023-08-27 13:20:41,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42952, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43318, PETRI_PLACES=442, PETRI_TRANSITIONS=1727} [2023-08-27 13:20:41,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 413 predicate places. [2023-08-27 13:20:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 1727 transitions, 43318 flow [2023-08-27 13:20:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:20:41,486 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] [2023-08-27 13:20:41,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 13:20:41,486 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:20:41,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:20:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash 280465283, now seen corresponding path program 5 times [2023-08-27 13:20:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:20:41,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299054628] [2023-08-27 13:20:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:20:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:20:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:20:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:41,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:20:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299054628] [2023-08-27 13:20:41,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299054628] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:20:41,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151634140] [2023-08-27 13:20:41,570 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 13:20:41,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:20:41,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:20:41,571 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:20:41,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 13:20:41,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:20:41,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:20:41,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 13:20:41,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:20:41,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:41,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:20:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:41,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151634140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:20:41,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:20:41,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 13:20:41,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861229102] [2023-08-27 13:20:41,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:20:41,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 13:20:41,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:20:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 13:20:41,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-27 13:20:41,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:20:41,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1727 transitions, 43318 flow. Second operand has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:41,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:20:41,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:20:41,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:20:48,340 INFO L124 PetriNetUnfolderBase]: 11513/17035 cut-off events. [2023-08-27 13:20:48,340 INFO L125 PetriNetUnfolderBase]: For 607239/607239 co-relation queries the response was YES. [2023-08-27 13:20:48,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177246 conditions, 17035 events. 11513/17035 cut-off events. For 607239/607239 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 105921 event pairs, 2395 based on Foata normal form. 4/17039 useless extension candidates. Maximal degree in co-relation 176795. Up to 15830 conditions per place. [2023-08-27 13:20:48,592 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1512 selfloop transitions, 245 changer transitions 0/1757 dead transitions. [2023-08-27 13:20:48,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1757 transitions, 47163 flow [2023-08-27 13:20:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:20:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:20:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2023-08-27 13:20:48,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44586466165413535 [2023-08-27 13:20:48,593 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2023-08-27 13:20:48,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2023-08-27 13:20:48,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:20:48,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2023-08-27 13:20:48,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:48,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:48,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:48,595 INFO L175 Difference]: Start difference. First operand has 442 places, 1727 transitions, 43318 flow. Second operand 7 states and 593 transitions. [2023-08-27 13:20:48,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1757 transitions, 47163 flow [2023-08-27 13:20:57,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1757 transitions, 46883 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 13:20:57,310 INFO L231 Difference]: Finished difference. Result has 444 places, 1730 transitions, 43611 flow [2023-08-27 13:20:57,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43040, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43611, PETRI_PLACES=444, PETRI_TRANSITIONS=1730} [2023-08-27 13:20:57,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 415 predicate places. [2023-08-27 13:20:57,311 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1730 transitions, 43611 flow [2023-08-27 13:20:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:57,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:20:57,311 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] [2023-08-27 13:20:57,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 13:20:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 13:20:57,515 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:20:57,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:20:57,515 INFO L85 PathProgramCache]: Analyzing trace with hash -516251336, now seen corresponding path program 10 times [2023-08-27 13:20:57,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:20:57,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181928232] [2023-08-27 13:20:57,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:20:57,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:20:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:20:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:20:57,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:20:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181928232] [2023-08-27 13:20:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181928232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:20:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:20:57,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:20:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143096766] [2023-08-27 13:20:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:20:57,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:20:57,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:20:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:20:57,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:20:57,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:20:57,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1730 transitions, 43611 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:20:57,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:20:57,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:20:57,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:21:04,166 INFO L124 PetriNetUnfolderBase]: 11566/17114 cut-off events. [2023-08-27 13:21:04,166 INFO L125 PetriNetUnfolderBase]: For 623745/623745 co-relation queries the response was YES. [2023-08-27 13:21:04,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178358 conditions, 17114 events. 11566/17114 cut-off events. For 623745/623745 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106566 event pairs, 2402 based on Foata normal form. 24/17138 useless extension candidates. Maximal degree in co-relation 177580. Up to 15839 conditions per place. [2023-08-27 13:21:04,419 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1518 selfloop transitions, 255 changer transitions 0/1773 dead transitions. [2023-08-27 13:21:04,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1773 transitions, 47828 flow [2023-08-27 13:21:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:21:04,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:21:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 13:21:04,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 13:21:04,420 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 13:21:04,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 13:21:04,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:21:04,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 13:21:04,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:04,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:04,422 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:04,422 INFO L175 Difference]: Start difference. First operand has 444 places, 1730 transitions, 43611 flow. Second operand 7 states and 600 transitions. [2023-08-27 13:21:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1773 transitions, 47828 flow [2023-08-27 13:21:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1773 transitions, 47124 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 13:21:13,061 INFO L231 Difference]: Finished difference. Result has 446 places, 1742 transitions, 43799 flow [2023-08-27 13:21:13,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42925, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43799, PETRI_PLACES=446, PETRI_TRANSITIONS=1742} [2023-08-27 13:21:13,062 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 417 predicate places. [2023-08-27 13:21:13,062 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1742 transitions, 43799 flow [2023-08-27 13:21:13,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:13,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:21:13,062 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] [2023-08-27 13:21:13,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 13:21:13,063 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:21:13,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:21:13,063 INFO L85 PathProgramCache]: Analyzing trace with hash 128564496, now seen corresponding path program 11 times [2023-08-27 13:21:13,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:21:13,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676279530] [2023-08-27 13:21:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:21:13,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:21:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:21:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:21:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:21:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676279530] [2023-08-27 13:21:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676279530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:21:13,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:21:13,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:21:13,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619132722] [2023-08-27 13:21:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:21:13,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:21:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:21:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:21:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:21:13,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:21:13,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1742 transitions, 43799 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:13,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:21:13,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:21:13,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:21:19,724 INFO L124 PetriNetUnfolderBase]: 11593/17155 cut-off events. [2023-08-27 13:21:19,724 INFO L125 PetriNetUnfolderBase]: For 614059/614059 co-relation queries the response was YES. [2023-08-27 13:21:19,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178968 conditions, 17155 events. 11593/17155 cut-off events. For 614059/614059 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 106874 event pairs, 2410 based on Foata normal form. 14/17169 useless extension candidates. Maximal degree in co-relation 178188. Up to 15895 conditions per place. [2023-08-27 13:21:19,982 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1523 selfloop transitions, 251 changer transitions 0/1774 dead transitions. [2023-08-27 13:21:19,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1774 transitions, 47689 flow [2023-08-27 13:21:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:21:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:21:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 13:21:19,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 13:21:19,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 13:21:19,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 13:21:19,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:21:19,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 13:21:19,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:19,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:19,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:19,985 INFO L175 Difference]: Start difference. First operand has 446 places, 1742 transitions, 43799 flow. Second operand 7 states and 598 transitions. [2023-08-27 13:21:19,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1774 transitions, 47689 flow [2023-08-27 13:21:28,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1774 transitions, 47403 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 13:21:28,735 INFO L231 Difference]: Finished difference. Result has 450 places, 1744 transitions, 44096 flow [2023-08-27 13:21:28,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43513, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44096, PETRI_PLACES=450, PETRI_TRANSITIONS=1744} [2023-08-27 13:21:28,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 421 predicate places. [2023-08-27 13:21:28,736 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 1744 transitions, 44096 flow [2023-08-27 13:21:28,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:28,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:21:28,736 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] [2023-08-27 13:21:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 13:21:28,736 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:21:28,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:21:28,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2061475308, now seen corresponding path program 12 times [2023-08-27 13:21:28,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:21:28,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469830201] [2023-08-27 13:21:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:21:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:21:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:21:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:21:28,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:21:28,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469830201] [2023-08-27 13:21:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469830201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:21:28,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:21:28,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:21:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436147390] [2023-08-27 13:21:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:21:28,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:21:28,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:21:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:21:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:21:28,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:21:28,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1744 transitions, 44096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:28,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:21:28,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:21:28,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:21:35,355 INFO L124 PetriNetUnfolderBase]: 11605/17175 cut-off events. [2023-08-27 13:21:35,355 INFO L125 PetriNetUnfolderBase]: For 628789/628789 co-relation queries the response was YES. [2023-08-27 13:21:35,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179413 conditions, 17175 events. 11605/17175 cut-off events. For 628789/628789 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 107078 event pairs, 2424 based on Foata normal form. 8/17183 useless extension candidates. Maximal degree in co-relation 178632. Up to 15939 conditions per place. [2023-08-27 13:21:35,617 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1521 selfloop transitions, 250 changer transitions 0/1771 dead transitions. [2023-08-27 13:21:35,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1771 transitions, 47976 flow [2023-08-27 13:21:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:21:35,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:21:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 13:21:35,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 13:21:35,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 13:21:35,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 13:21:35,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:21:35,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 13:21:35,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:35,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:35,619 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:35,619 INFO L175 Difference]: Start difference. First operand has 450 places, 1744 transitions, 44096 flow. Second operand 7 states and 592 transitions. [2023-08-27 13:21:35,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1771 transitions, 47976 flow [2023-08-27 13:21:44,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1771 transitions, 47466 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 13:21:44,551 INFO L231 Difference]: Finished difference. Result has 452 places, 1747 transitions, 44177 flow [2023-08-27 13:21:44,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43592, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44177, PETRI_PLACES=452, PETRI_TRANSITIONS=1747} [2023-08-27 13:21:44,552 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 423 predicate places. [2023-08-27 13:21:44,552 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1747 transitions, 44177 flow [2023-08-27 13:21:44,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:44,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:21:44,552 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] [2023-08-27 13:21:44,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-27 13:21:44,552 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:21:44,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:21:44,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1573679163, now seen corresponding path program 6 times [2023-08-27 13:21:44,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:21:44,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650010020] [2023-08-27 13:21:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:21:44,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:21:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:21:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:21:44,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:21:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650010020] [2023-08-27 13:21:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650010020] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:21:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36710175] [2023-08-27 13:21:44,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 13:21:44,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:21:44,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:21:44,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:21:44,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 13:21:44,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 13:21:44,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:21:44,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 13:21:44,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:21:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:21:44,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:21:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:21:44,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36710175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:21:44,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:21:44,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-08-27 13:21:44,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832809873] [2023-08-27 13:21:44,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:21:44,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 13:21:44,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:21:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 13:21:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-08-27 13:21:44,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:21:44,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1747 transitions, 44177 flow. Second operand has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:21:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:21:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:21:51,666 INFO L124 PetriNetUnfolderBase]: 11675/17287 cut-off events. [2023-08-27 13:21:51,666 INFO L125 PetriNetUnfolderBase]: For 629267/629267 co-relation queries the response was YES. [2023-08-27 13:21:51,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180486 conditions, 17287 events. 11675/17287 cut-off events. For 629267/629267 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 107984 event pairs, 2420 based on Foata normal form. 4/17291 useless extension candidates. Maximal degree in co-relation 179705. Up to 15967 conditions per place. [2023-08-27 13:21:51,967 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1532 selfloop transitions, 263 changer transitions 0/1795 dead transitions. [2023-08-27 13:21:51,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 1795 transitions, 48399 flow [2023-08-27 13:21:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 13:21:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 13:21:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 763 transitions. [2023-08-27 13:21:51,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461988304093567 [2023-08-27 13:21:51,969 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 763 transitions. [2023-08-27 13:21:51,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 763 transitions. [2023-08-27 13:21:51,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:21:51,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 763 transitions. [2023-08-27 13:21:51,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:51,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:51,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:21:51,971 INFO L175 Difference]: Start difference. First operand has 452 places, 1747 transitions, 44177 flow. Second operand 9 states and 763 transitions. [2023-08-27 13:21:51,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 1795 transitions, 48399 flow [2023-08-27 13:22:00,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1795 transitions, 48116 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 13:22:00,914 INFO L231 Difference]: Finished difference. Result has 458 places, 1758 transitions, 44755 flow [2023-08-27 13:22:00,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43902, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44755, PETRI_PLACES=458, PETRI_TRANSITIONS=1758} [2023-08-27 13:22:00,915 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 429 predicate places. [2023-08-27 13:22:00,916 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1758 transitions, 44755 flow [2023-08-27 13:22:00,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:00,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:22:00,916 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] [2023-08-27 13:22:00,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 13:22:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-27 13:22:01,116 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:22:01,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:22:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1476022069, now seen corresponding path program 7 times [2023-08-27 13:22:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:22:01,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681292482] [2023-08-27 13:22:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:22:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:22:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:22:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:22:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681292482] [2023-08-27 13:22:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681292482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:22:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722773596] [2023-08-27 13:22:01,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 13:22:01,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:22:01,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:22:01,193 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:22:01,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 13:22:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:22:01,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 13:22:01,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:22:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:01,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:22:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722773596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:22:01,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:22:01,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 13:22:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213126074] [2023-08-27 13:22:01,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:22:01,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 13:22:01,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:22:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 13:22:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 13:22:01,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:22:01,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1758 transitions, 44755 flow. Second operand has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:01,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:22:01,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:22:01,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:22:08,165 INFO L124 PetriNetUnfolderBase]: 11663/17261 cut-off events. [2023-08-27 13:22:08,166 INFO L125 PetriNetUnfolderBase]: For 641156/641156 co-relation queries the response was YES. [2023-08-27 13:22:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180681 conditions, 17261 events. 11663/17261 cut-off events. For 641156/641156 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 107705 event pairs, 2426 based on Foata normal form. 8/17269 useless extension candidates. Maximal degree in co-relation 179898. Up to 15967 conditions per place. [2023-08-27 13:22:08,434 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1524 selfloop transitions, 262 changer transitions 0/1786 dead transitions. [2023-08-27 13:22:08,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1786 transitions, 48627 flow [2023-08-27 13:22:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 13:22:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 13:22:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 678 transitions. [2023-08-27 13:22:08,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44605263157894737 [2023-08-27 13:22:08,436 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 678 transitions. [2023-08-27 13:22:08,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 678 transitions. [2023-08-27 13:22:08,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:22:08,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 678 transitions. [2023-08-27 13:22:08,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:08,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:08,437 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:08,437 INFO L175 Difference]: Start difference. First operand has 458 places, 1758 transitions, 44755 flow. Second operand 8 states and 678 transitions. [2023-08-27 13:22:08,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1786 transitions, 48627 flow [2023-08-27 13:22:17,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1786 transitions, 48381 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 13:22:17,665 INFO L231 Difference]: Finished difference. Result has 462 places, 1757 transitions, 45008 flow [2023-08-27 13:22:17,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44484, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45008, PETRI_PLACES=462, PETRI_TRANSITIONS=1757} [2023-08-27 13:22:17,666 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 13:22:17,666 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1757 transitions, 45008 flow [2023-08-27 13:22:17,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:17,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:22:17,667 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] [2023-08-27 13:22:17,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 13:22:17,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:22:17,867 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:22:17,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:22:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 877664846, now seen corresponding path program 13 times [2023-08-27 13:22:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:22:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688574253] [2023-08-27 13:22:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:22:17,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:22:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:22:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:17,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:22:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688574253] [2023-08-27 13:22:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688574253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:22:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:22:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:22:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425012810] [2023-08-27 13:22:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:22:17,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:22:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:22:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:22:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:22:17,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:22:17,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1757 transitions, 45008 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:17,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:22:17,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:22:17,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:22:24,700 INFO L124 PetriNetUnfolderBase]: 11592/17126 cut-off events. [2023-08-27 13:22:24,700 INFO L125 PetriNetUnfolderBase]: For 647515/647515 co-relation queries the response was YES. [2023-08-27 13:22:24,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179742 conditions, 17126 events. 11592/17126 cut-off events. For 647515/647515 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 106321 event pairs, 2213 based on Foata normal form. 58/17184 useless extension candidates. Maximal degree in co-relation 179139. Up to 15295 conditions per place. [2023-08-27 13:22:24,961 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1469 selfloop transitions, 337 changer transitions 0/1806 dead transitions. [2023-08-27 13:22:24,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1806 transitions, 49118 flow [2023-08-27 13:22:24,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:22:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:22:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 13:22:24,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 13:22:24,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 13:22:24,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 13:22:24,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:22:24,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 13:22:24,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:24,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:24,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:24,963 INFO L175 Difference]: Start difference. First operand has 462 places, 1757 transitions, 45008 flow. Second operand 7 states and 599 transitions. [2023-08-27 13:22:24,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1806 transitions, 49118 flow [2023-08-27 13:22:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1806 transitions, 48582 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 13:22:34,052 INFO L231 Difference]: Finished difference. Result has 462 places, 1763 transitions, 45326 flow [2023-08-27 13:22:34,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44480, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45326, PETRI_PLACES=462, PETRI_TRANSITIONS=1763} [2023-08-27 13:22:34,053 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 13:22:34,053 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1763 transitions, 45326 flow [2023-08-27 13:22:34,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:34,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:22:34,054 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] [2023-08-27 13:22:34,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 13:22:34,054 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:22:34,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:22:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 441642440, now seen corresponding path program 14 times [2023-08-27 13:22:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:22:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508071042] [2023-08-27 13:22:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:22:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:22:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:22:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:22:34,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508071042] [2023-08-27 13:22:34,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508071042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:22:34,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:22:34,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:22:34,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180203388] [2023-08-27 13:22:34,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:22:34,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:22:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:22:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:22:34,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:22:34,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:22:34,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1763 transitions, 45326 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:34,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:22:34,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:22:34,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:22:40,771 INFO L124 PetriNetUnfolderBase]: 11593/17103 cut-off events. [2023-08-27 13:22:40,771 INFO L125 PetriNetUnfolderBase]: For 654288/654288 co-relation queries the response was YES. [2023-08-27 13:22:40,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180350 conditions, 17103 events. 11593/17103 cut-off events. For 654288/654288 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 105869 event pairs, 2348 based on Foata normal form. 14/17117 useless extension candidates. Maximal degree in co-relation 179746. Up to 15817 conditions per place. [2023-08-27 13:22:41,153 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1509 selfloop transitions, 294 changer transitions 0/1803 dead transitions. [2023-08-27 13:22:41,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1803 transitions, 49361 flow [2023-08-27 13:22:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:22:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:22:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 13:22:41,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 13:22:41,154 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 13:22:41,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 13:22:41,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:22:41,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 13:22:41,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:41,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:41,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:41,156 INFO L175 Difference]: Start difference. First operand has 462 places, 1763 transitions, 45326 flow. Second operand 7 states and 588 transitions. [2023-08-27 13:22:41,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1803 transitions, 49361 flow [2023-08-27 13:22:50,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1803 transitions, 48642 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-27 13:22:50,115 INFO L231 Difference]: Finished difference. Result has 462 places, 1769 transitions, 45345 flow [2023-08-27 13:22:50,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44470, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45345, PETRI_PLACES=462, PETRI_TRANSITIONS=1769} [2023-08-27 13:22:50,116 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 13:22:50,116 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1769 transitions, 45345 flow [2023-08-27 13:22:50,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:50,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:22:50,116 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] [2023-08-27 13:22:50,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 13:22:50,116 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:22:50,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:22:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -868627026, now seen corresponding path program 15 times [2023-08-27 13:22:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:22:50,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212216149] [2023-08-27 13:22:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:22:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:22:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:22:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:22:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:22:50,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212216149] [2023-08-27 13:22:50,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212216149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:22:50,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:22:50,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:22:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131380362] [2023-08-27 13:22:50,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:22:50,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:22:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:22:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:22:50,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:22:50,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:22:50,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1769 transitions, 45345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:50,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:22:50,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:22:50,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:22:56,984 INFO L124 PetriNetUnfolderBase]: 11671/17181 cut-off events. [2023-08-27 13:22:56,984 INFO L125 PetriNetUnfolderBase]: For 656413/656413 co-relation queries the response was YES. [2023-08-27 13:22:57,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181597 conditions, 17181 events. 11671/17181 cut-off events. For 656413/656413 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 105941 event pairs, 2298 based on Foata normal form. 60/17241 useless extension candidates. Maximal degree in co-relation 181096. Up to 15528 conditions per place. [2023-08-27 13:22:57,245 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1500 selfloop transitions, 326 changer transitions 0/1826 dead transitions. [2023-08-27 13:22:57,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1826 transitions, 49990 flow [2023-08-27 13:22:57,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:22:57,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:22:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 13:22:57,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 13:22:57,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 13:22:57,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 13:22:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:22:57,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 13:22:57,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:57,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:57,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:22:57,248 INFO L175 Difference]: Start difference. First operand has 462 places, 1769 transitions, 45345 flow. Second operand 7 states and 598 transitions. [2023-08-27 13:22:57,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1826 transitions, 49990 flow [2023-08-27 13:23:06,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 1826 transitions, 49386 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 13:23:06,573 INFO L231 Difference]: Finished difference. Result has 465 places, 1790 transitions, 46158 flow [2023-08-27 13:23:06,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44747, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46158, PETRI_PLACES=465, PETRI_TRANSITIONS=1790} [2023-08-27 13:23:06,574 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 436 predicate places. [2023-08-27 13:23:06,574 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 1790 transitions, 46158 flow [2023-08-27 13:23:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:06,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:23:06,574 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] [2023-08-27 13:23:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-27 13:23:06,575 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:23:06,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:23:06,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1968589468, now seen corresponding path program 26 times [2023-08-27 13:23:06,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:23:06,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848577270] [2023-08-27 13:23:06,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:23:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:23:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:23:06,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:06,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:23:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848577270] [2023-08-27 13:23:06,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848577270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:23:06,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:23:06,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:23:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026344948] [2023-08-27 13:23:06,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:23:06,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:23:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:23:06,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:23:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:23:06,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:23:06,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1790 transitions, 46158 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:06,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:23:06,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:23:06,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:23:13,363 INFO L124 PetriNetUnfolderBase]: 11619/17069 cut-off events. [2023-08-27 13:23:13,364 INFO L125 PetriNetUnfolderBase]: For 661327/661327 co-relation queries the response was YES. [2023-08-27 13:23:13,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181297 conditions, 17069 events. 11619/17069 cut-off events. For 661327/661327 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 104986 event pairs, 2199 based on Foata normal form. 40/17109 useless extension candidates. Maximal degree in co-relation 180782. Up to 14941 conditions per place. [2023-08-27 13:23:13,635 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1498 selfloop transitions, 386 changer transitions 0/1884 dead transitions. [2023-08-27 13:23:13,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1884 transitions, 51270 flow [2023-08-27 13:23:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:23:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:23:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 13:23:13,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 13:23:13,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 13:23:13,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 13:23:13,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:23:13,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 13:23:13,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:13,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:13,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:13,638 INFO L175 Difference]: Start difference. First operand has 465 places, 1790 transitions, 46158 flow. Second operand 7 states and 603 transitions. [2023-08-27 13:23:13,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1884 transitions, 51270 flow [2023-08-27 13:23:22,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1884 transitions, 50744 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-27 13:23:22,673 INFO L231 Difference]: Finished difference. Result has 471 places, 1795 transitions, 46721 flow [2023-08-27 13:23:22,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=45613, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46721, PETRI_PLACES=471, PETRI_TRANSITIONS=1795} [2023-08-27 13:23:22,675 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 442 predicate places. [2023-08-27 13:23:22,675 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 1795 transitions, 46721 flow [2023-08-27 13:23:22,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:22,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:23:22,675 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] [2023-08-27 13:23:22,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 13:23:22,675 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:23:22,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:23:22,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1259520142, now seen corresponding path program 27 times [2023-08-27 13:23:22,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:23:22,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857175430] [2023-08-27 13:23:22,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:23:22,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:23:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:23:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:23:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857175430] [2023-08-27 13:23:22,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857175430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:23:22,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:23:22,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:23:22,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867093260] [2023-08-27 13:23:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:23:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:23:22,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:23:22,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:23:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:23:22,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:23:22,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1795 transitions, 46721 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:22,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:23:22,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:23:22,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:23:29,562 INFO L124 PetriNetUnfolderBase]: 11597/17047 cut-off events. [2023-08-27 13:23:29,563 INFO L125 PetriNetUnfolderBase]: For 668031/668031 co-relation queries the response was YES. [2023-08-27 13:23:29,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181982 conditions, 17047 events. 11597/17047 cut-off events. For 668031/668031 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 104972 event pairs, 2312 based on Foata normal form. 22/17069 useless extension candidates. Maximal degree in co-relation 181474. Up to 15662 conditions per place. [2023-08-27 13:23:29,834 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1519 selfloop transitions, 312 changer transitions 0/1831 dead transitions. [2023-08-27 13:23:29,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1831 transitions, 50851 flow [2023-08-27 13:23:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:23:29,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:23:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 13:23:29,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 13:23:29,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 13:23:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 13:23:29,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:23:29,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 13:23:29,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:29,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:29,837 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:29,837 INFO L175 Difference]: Start difference. First operand has 471 places, 1795 transitions, 46721 flow. Second operand 7 states and 598 transitions. [2023-08-27 13:23:29,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1831 transitions, 50851 flow [2023-08-27 13:23:38,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1831 transitions, 50179 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-27 13:23:38,836 INFO L231 Difference]: Finished difference. Result has 476 places, 1798 transitions, 46782 flow [2023-08-27 13:23:38,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46049, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46782, PETRI_PLACES=476, PETRI_TRANSITIONS=1798} [2023-08-27 13:23:38,837 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 447 predicate places. [2023-08-27 13:23:38,837 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1798 transitions, 46782 flow [2023-08-27 13:23:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:38,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:23:38,837 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] [2023-08-27 13:23:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 13:23:38,837 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:23:38,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:23:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash -780133370, now seen corresponding path program 28 times [2023-08-27 13:23:38,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:23:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740229326] [2023-08-27 13:23:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:23:38,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:23:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:23:38,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:23:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740229326] [2023-08-27 13:23:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740229326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:23:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322476176] [2023-08-27 13:23:38,911 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 13:23:38,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:23:38,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:23:38,912 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:23:38,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 13:23:39,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 13:23:39,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:23:39,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 13:23:39,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:23:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:39,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:23:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:39,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322476176] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:23:39,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:23:39,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-08-27 13:23:39,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030638830] [2023-08-27 13:23:39,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:23:39,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 13:23:39,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:23:39,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 13:23:39,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 13:23:39,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:23:39,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1798 transitions, 46782 flow. Second operand has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:39,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:23:39,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:23:39,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:23:47,206 INFO L124 PetriNetUnfolderBase]: 11931/17577 cut-off events. [2023-08-27 13:23:47,206 INFO L125 PetriNetUnfolderBase]: For 677335/677335 co-relation queries the response was YES. [2023-08-27 13:23:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186526 conditions, 17577 events. 11931/17577 cut-off events. For 677335/677335 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 109196 event pairs, 1733 based on Foata normal form. 36/17613 useless extension candidates. Maximal degree in co-relation 186016. Up to 13321 conditions per place. [2023-08-27 13:23:47,483 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1289 selfloop transitions, 835 changer transitions 0/2124 dead transitions. [2023-08-27 13:23:47,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 2124 transitions, 56361 flow [2023-08-27 13:23:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 13:23:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 13:23:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1934 transitions. [2023-08-27 13:23:47,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425629290617849 [2023-08-27 13:23:47,486 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1934 transitions. [2023-08-27 13:23:47,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1934 transitions. [2023-08-27 13:23:47,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:23:47,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1934 transitions. [2023-08-27 13:23:47,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.08695652173913) internal successors, (1934), 23 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:47,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:47,489 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:47,489 INFO L175 Difference]: Start difference. First operand has 476 places, 1798 transitions, 46782 flow. Second operand 23 states and 1934 transitions. [2023-08-27 13:23:47,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 2124 transitions, 56361 flow [2023-08-27 13:23:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 2124 transitions, 55666 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-27 13:23:57,379 INFO L231 Difference]: Finished difference. Result has 508 places, 1969 transitions, 52251 flow [2023-08-27 13:23:57,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46107, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=681, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1028, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=52251, PETRI_PLACES=508, PETRI_TRANSITIONS=1969} [2023-08-27 13:23:57,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 479 predicate places. [2023-08-27 13:23:57,380 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1969 transitions, 52251 flow [2023-08-27 13:23:57,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:57,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:23:57,381 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] [2023-08-27 13:23:57,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 13:23:57,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:23:57,581 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:23:57,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:23:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash -14970567, now seen corresponding path program 8 times [2023-08-27 13:23:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:23:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773819758] [2023-08-27 13:23:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:23:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:23:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:23:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:57,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:23:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773819758] [2023-08-27 13:23:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773819758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:23:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214718847] [2023-08-27 13:23:57,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 13:23:57,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:23:57,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:23:57,668 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:23:57,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 13:23:57,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:23:57,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:23:57,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 13:23:57,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:23:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:57,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:23:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:23:58,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214718847] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:23:58,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:23:58,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 13:23:58,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988821208] [2023-08-27 13:23:58,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:23:58,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 13:23:58,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:23:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 13:23:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-08-27 13:23:58,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:23:58,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1969 transitions, 52251 flow. Second operand has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:23:58,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:23:58,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:23:58,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:24:07,844 INFO L124 PetriNetUnfolderBase]: 14714/21456 cut-off events. [2023-08-27 13:24:07,844 INFO L125 PetriNetUnfolderBase]: For 888739/888739 co-relation queries the response was YES. [2023-08-27 13:24:08,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232076 conditions, 21456 events. 14714/21456 cut-off events. For 888739/888739 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 134256 event pairs, 1897 based on Foata normal form. 20/21476 useless extension candidates. Maximal degree in co-relation 231520. Up to 10115 conditions per place. [2023-08-27 13:24:08,228 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1595 selfloop transitions, 1000 changer transitions 0/2595 dead transitions. [2023-08-27 13:24:08,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 2595 transitions, 69912 flow [2023-08-27 13:24:08,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 13:24:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 13:24:08,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2107 transitions. [2023-08-27 13:24:08,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435789473684211 [2023-08-27 13:24:08,230 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2107 transitions. [2023-08-27 13:24:08,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2107 transitions. [2023-08-27 13:24:08,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:24:08,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2107 transitions. [2023-08-27 13:24:08,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 84.28) internal successors, (2107), 25 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:08,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:08,235 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:08,235 INFO L175 Difference]: Start difference. First operand has 508 places, 1969 transitions, 52251 flow. Second operand 25 states and 2107 transitions. [2023-08-27 13:24:08,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 2595 transitions, 69912 flow [2023-08-27 13:24:22,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2595 transitions, 69193 flow, removed 264 selfloop flow, removed 5 redundant places. [2023-08-27 13:24:22,859 INFO L231 Difference]: Finished difference. Result has 541 places, 2246 transitions, 62080 flow [2023-08-27 13:24:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=51582, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=744, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=62080, PETRI_PLACES=541, PETRI_TRANSITIONS=2246} [2023-08-27 13:24:22,860 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 512 predicate places. [2023-08-27 13:24:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2246 transitions, 62080 flow [2023-08-27 13:24:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:22,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:24:22,861 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] [2023-08-27 13:24:22,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 13:24:23,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:24:23,061 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:24:23,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:24:23,061 INFO L85 PathProgramCache]: Analyzing trace with hash 985467564, now seen corresponding path program 29 times [2023-08-27 13:24:23,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:24:23,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213851492] [2023-08-27 13:24:23,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:24:23,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:24:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:24:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:24:23,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:24:23,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213851492] [2023-08-27 13:24:23,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213851492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:24:23,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:24:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:24:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011905309] [2023-08-27 13:24:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:24:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:24:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:24:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:24:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:24:23,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:24:23,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2246 transitions, 62080 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:23,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:24:23,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:24:23,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:24:33,511 INFO L124 PetriNetUnfolderBase]: 14734/21492 cut-off events. [2023-08-27 13:24:33,511 INFO L125 PetriNetUnfolderBase]: For 993233/993233 co-relation queries the response was YES. [2023-08-27 13:24:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243687 conditions, 21492 events. 14734/21492 cut-off events. For 993233/993233 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 134886 event pairs, 2901 based on Foata normal form. 16/21508 useless extension candidates. Maximal degree in co-relation 243139. Up to 19669 conditions per place. [2023-08-27 13:24:34,024 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1887 selfloop transitions, 389 changer transitions 0/2276 dead transitions. [2023-08-27 13:24:34,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 2276 transitions, 67128 flow [2023-08-27 13:24:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:24:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:24:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 13:24:34,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 13:24:34,026 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 13:24:34,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 13:24:34,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:24:34,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 13:24:34,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:34,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:34,027 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:34,027 INFO L175 Difference]: Start difference. First operand has 541 places, 2246 transitions, 62080 flow. Second operand 7 states and 594 transitions. [2023-08-27 13:24:34,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 2276 transitions, 67128 flow [2023-08-27 13:24:50,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 2276 transitions, 66447 flow, removed 277 selfloop flow, removed 2 redundant places. [2023-08-27 13:24:50,567 INFO L231 Difference]: Finished difference. Result has 546 places, 2250 transitions, 62363 flow [2023-08-27 13:24:50,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61401, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62363, PETRI_PLACES=546, PETRI_TRANSITIONS=2250} [2023-08-27 13:24:50,569 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 517 predicate places. [2023-08-27 13:24:50,569 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 2250 transitions, 62363 flow [2023-08-27 13:24:50,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:50,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:24:50,569 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] [2023-08-27 13:24:50,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 13:24:50,569 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:24:50,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:24:50,569 INFO L85 PathProgramCache]: Analyzing trace with hash -964801567, now seen corresponding path program 9 times [2023-08-27 13:24:50,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:24:50,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809915223] [2023-08-27 13:24:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:24:50,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:24:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:24:50,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:24:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:24:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809915223] [2023-08-27 13:24:50,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809915223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:24:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204614959] [2023-08-27 13:24:50,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 13:24:50,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:24:50,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:24:50,649 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:24:50,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 13:24:50,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 13:24:50,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:24:50,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 13:24:50,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:24:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:24:50,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:24:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:24:50,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204614959] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 13:24:50,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 13:24:50,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 13:24:50,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879350727] [2023-08-27 13:24:50,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 13:24:50,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 13:24:50,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:24:50,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 13:24:50,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-08-27 13:24:50,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 190 [2023-08-27 13:24:50,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 2250 transitions, 62363 flow. Second operand has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:24:50,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:24:50,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 190 [2023-08-27 13:24:50,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:25:02,116 INFO L124 PetriNetUnfolderBase]: 14893/21789 cut-off events. [2023-08-27 13:25:02,116 INFO L125 PetriNetUnfolderBase]: For 994838/994838 co-relation queries the response was YES. [2023-08-27 13:25:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245703 conditions, 21789 events. 14893/21789 cut-off events. For 994838/994838 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 137370 event pairs, 980 based on Foata normal form. 8/21797 useless extension candidates. Maximal degree in co-relation 245163. Up to 10737 conditions per place. [2023-08-27 13:25:02,531 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 1649 selfloop transitions, 867 changer transitions 0/2516 dead transitions. [2023-08-27 13:25:02,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2516 transitions, 72107 flow [2023-08-27 13:25:02,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 13:25:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 13:25:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1207 transitions. [2023-08-27 13:25:02,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42350877192982456 [2023-08-27 13:25:02,533 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1207 transitions. [2023-08-27 13:25:02,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1207 transitions. [2023-08-27 13:25:02,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:25:02,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1207 transitions. [2023-08-27 13:25:02,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.46666666666667) internal successors, (1207), 15 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:02,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 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) [2023-08-27 13:25:02,535 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 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) [2023-08-27 13:25:02,535 INFO L175 Difference]: Start difference. First operand has 546 places, 2250 transitions, 62363 flow. Second operand 15 states and 1207 transitions. [2023-08-27 13:25:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2516 transitions, 72107 flow [2023-08-27 13:25:19,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2516 transitions, 71306 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 13:25:19,603 INFO L231 Difference]: Finished difference. Result has 557 places, 2259 transitions, 64507 flow [2023-08-27 13:25:19,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61456, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=64507, PETRI_PLACES=557, PETRI_TRANSITIONS=2259} [2023-08-27 13:25:19,605 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 528 predicate places. [2023-08-27 13:25:19,605 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 2259 transitions, 64507 flow [2023-08-27 13:25:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:19,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:25:19,605 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] [2023-08-27 13:25:19,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 13:25:19,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-08-27 13:25:19,809 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:25:19,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:25:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1928307793, now seen corresponding path program 10 times [2023-08-27 13:25:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:25:19,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429430256] [2023-08-27 13:25:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:25:19,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:25:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:25:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:25:19,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:25:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429430256] [2023-08-27 13:25:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429430256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:25:19,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:25:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:25:19,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788668970] [2023-08-27 13:25:19,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:25:19,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:25:19,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:25:19,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:25:19,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:25:19,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:25:19,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 2259 transitions, 64507 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:25:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:25:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:25:31,067 INFO L124 PetriNetUnfolderBase]: 14897/21846 cut-off events. [2023-08-27 13:25:31,067 INFO L125 PetriNetUnfolderBase]: For 1091404/1091404 co-relation queries the response was YES. [2023-08-27 13:25:31,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251188 conditions, 21846 events. 14897/21846 cut-off events. For 1091404/1091404 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 138819 event pairs, 2616 based on Foata normal form. 36/21882 useless extension candidates. Maximal degree in co-relation 250643. Up to 18193 conditions per place. [2023-08-27 13:25:31,478 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1759 selfloop transitions, 553 changer transitions 13/2325 dead transitions. [2023-08-27 13:25:31,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2325 transitions, 70286 flow [2023-08-27 13:25:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:25:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:25:31,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 13:25:31,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 13:25:31,479 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 13:25:31,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 13:25:31,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:25:31,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 13:25:31,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:31,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:31,480 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:31,480 INFO L175 Difference]: Start difference. First operand has 557 places, 2259 transitions, 64507 flow. Second operand 7 states and 603 transitions. [2023-08-27 13:25:31,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2325 transitions, 70286 flow [2023-08-27 13:25:49,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 2325 transitions, 69306 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-27 13:25:49,797 INFO L231 Difference]: Finished difference. Result has 556 places, 2267 transitions, 65018 flow [2023-08-27 13:25:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63547, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65018, PETRI_PLACES=556, PETRI_TRANSITIONS=2267} [2023-08-27 13:25:49,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 527 predicate places. [2023-08-27 13:25:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2267 transitions, 65018 flow [2023-08-27 13:25:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:49,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:25:49,798 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] [2023-08-27 13:25:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-27 13:25:49,799 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:25:49,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:25:49,799 INFO L85 PathProgramCache]: Analyzing trace with hash 628653514, now seen corresponding path program 16 times [2023-08-27 13:25:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:25:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676915760] [2023-08-27 13:25:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:25:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:25:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:25:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:25:49,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:25:49,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676915760] [2023-08-27 13:25:49,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676915760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:25:49,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:25:49,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:25:49,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201440229] [2023-08-27 13:25:49,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:25:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:25:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:25:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:25:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:25:49,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:25:49,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2267 transitions, 65018 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:25:49,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:25:49,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:25:49,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:01,014 INFO L124 PetriNetUnfolderBase]: 14897/21918 cut-off events. [2023-08-27 13:26:01,015 INFO L125 PetriNetUnfolderBase]: For 1059539/1059539 co-relation queries the response was YES. [2023-08-27 13:26:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253144 conditions, 21918 events. 14897/21918 cut-off events. For 1059539/1059539 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140160 event pairs, 2260 based on Foata normal form. 44/21962 useless extension candidates. Maximal degree in co-relation 252612. Up to 15697 conditions per place. [2023-08-27 13:26:01,430 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1613 selfloop transitions, 769 changer transitions 9/2391 dead transitions. [2023-08-27 13:26:01,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 2391 transitions, 72267 flow [2023-08-27 13:26:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:26:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:26:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-08-27 13:26:01,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2023-08-27 13:26:01,431 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-08-27 13:26:01,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-08-27 13:26:01,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:01,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-08-27 13:26:01,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:01,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:01,432 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:01,432 INFO L175 Difference]: Start difference. First operand has 556 places, 2267 transitions, 65018 flow. Second operand 7 states and 595 transitions. [2023-08-27 13:26:01,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 2391 transitions, 72267 flow [2023-08-27 13:26:19,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 2391 transitions, 71127 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 13:26:19,525 INFO L231 Difference]: Finished difference. Result has 560 places, 2285 transitions, 66293 flow [2023-08-27 13:26:19,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63908, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66293, PETRI_PLACES=560, PETRI_TRANSITIONS=2285} [2023-08-27 13:26:19,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 531 predicate places. [2023-08-27 13:26:19,527 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 2285 transitions, 66293 flow [2023-08-27 13:26:19,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:19,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:19,527 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] [2023-08-27 13:26:19,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-27 13:26:19,527 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:26:19,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1272576036, now seen corresponding path program 30 times [2023-08-27 13:26:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:19,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69529314] [2023-08-27 13:26:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:19,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69529314] [2023-08-27 13:26:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69529314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:19,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:19,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:26:19,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112137956] [2023-08-27 13:26:19,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:26:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:26:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:26:19,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:26:19,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2285 transitions, 66293 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:19,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:19,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:26:19,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:30,462 INFO L124 PetriNetUnfolderBase]: 14973/21989 cut-off events. [2023-08-27 13:26:30,462 INFO L125 PetriNetUnfolderBase]: For 1105332/1105332 co-relation queries the response was YES. [2023-08-27 13:26:30,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256924 conditions, 21989 events. 14973/21989 cut-off events. For 1105332/1105332 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140233 event pairs, 2671 based on Foata normal form. 30/22019 useless extension candidates. Maximal degree in co-relation 256611. Up to 18422 conditions per place. [2023-08-27 13:26:31,089 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1739 selfloop transitions, 634 changer transitions 0/2373 dead transitions. [2023-08-27 13:26:31,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 2373 transitions, 72653 flow [2023-08-27 13:26:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:26:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:26:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 13:26:31,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 13:26:31,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 13:26:31,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 13:26:31,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:31,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 13:26:31,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:31,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:31,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:31,092 INFO L175 Difference]: Start difference. First operand has 560 places, 2285 transitions, 66293 flow. Second operand 7 states and 605 transitions. [2023-08-27 13:26:31,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 2373 transitions, 72653 flow [2023-08-27 13:26:50,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 2373 transitions, 71031 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-27 13:26:51,000 INFO L231 Difference]: Finished difference. Result has 563 places, 2309 transitions, 67121 flow [2023-08-27 13:26:51,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=64692, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67121, PETRI_PLACES=563, PETRI_TRANSITIONS=2309} [2023-08-27 13:26:51,001 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 534 predicate places. [2023-08-27 13:26:51,001 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 2309 transitions, 67121 flow [2023-08-27 13:26:51,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:51,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:51,002 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] [2023-08-27 13:26:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-27 13:26:51,002 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:26:51,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1076895340, now seen corresponding path program 31 times [2023-08-27 13:26:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84991152] [2023-08-27 13:26:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:51,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:51,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84991152] [2023-08-27 13:26:51,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84991152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:51,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:51,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:26:51,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502024424] [2023-08-27 13:26:51,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:51,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:26:51,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:51,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:26:51,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:26:51,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:26:51,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 2309 transitions, 67121 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:51,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:51,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:26:51,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:27:02,222 INFO L124 PetriNetUnfolderBase]: 14959/21941 cut-off events. [2023-08-27 13:27:02,222 INFO L125 PetriNetUnfolderBase]: For 1083433/1083433 co-relation queries the response was YES. [2023-08-27 13:27:02,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256486 conditions, 21941 events. 14959/21941 cut-off events. For 1083433/1083433 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 139600 event pairs, 2642 based on Foata normal form. 24/21965 useless extension candidates. Maximal degree in co-relation 255925. Up to 18159 conditions per place. [2023-08-27 13:27:02,761 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1719 selfloop transitions, 660 changer transitions 0/2379 dead transitions. [2023-08-27 13:27:02,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2379 transitions, 72882 flow [2023-08-27 13:27:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:27:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:27:02,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 13:27:02,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 13:27:02,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 13:27:02,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 13:27:02,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:27:02,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 13:27:02,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:02,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:02,764 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:02,764 INFO L175 Difference]: Start difference. First operand has 563 places, 2309 transitions, 67121 flow. Second operand 7 states and 607 transitions. [2023-08-27 13:27:02,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2379 transitions, 72882 flow [2023-08-27 13:27:19,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 2379 transitions, 72255 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-08-27 13:27:19,897 INFO L231 Difference]: Finished difference. Result has 568 places, 2313 transitions, 68030 flow [2023-08-27 13:27:19,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66500, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68030, PETRI_PLACES=568, PETRI_TRANSITIONS=2313} [2023-08-27 13:27:19,898 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 539 predicate places. [2023-08-27 13:27:19,898 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 2313 transitions, 68030 flow [2023-08-27 13:27:19,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:19,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:27:19,898 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] [2023-08-27 13:27:19,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 13:27:19,898 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:27:19,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:27:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -619196296, now seen corresponding path program 32 times [2023-08-27 13:27:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:27:19,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698558889] [2023-08-27 13:27:19,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:27:19,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:27:19,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:27:19,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:27:19,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:27:19,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698558889] [2023-08-27 13:27:19,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698558889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:27:19,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:27:19,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:27:19,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017368388] [2023-08-27 13:27:19,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:27:19,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:27:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:27:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:27:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:27:19,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:27:19,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 2313 transitions, 68030 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:19,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:27:19,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:27:19,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:27:31,245 INFO L124 PetriNetUnfolderBase]: 14958/21942 cut-off events. [2023-08-27 13:27:31,245 INFO L125 PetriNetUnfolderBase]: For 1108617/1108617 co-relation queries the response was YES. [2023-08-27 13:27:31,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257107 conditions, 21942 events. 14958/21942 cut-off events. For 1108617/1108617 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 139702 event pairs, 2697 based on Foata normal form. 2/21944 useless extension candidates. Maximal degree in co-relation 256545. Up to 18372 conditions per place. [2023-08-27 13:27:31,669 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1780 selfloop transitions, 559 changer transitions 2/2341 dead transitions. [2023-08-27 13:27:31,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2341 transitions, 73096 flow [2023-08-27 13:27:31,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:27:31,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:27:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 13:27:31,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 13:27:31,670 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 13:27:31,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 13:27:31,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:27:31,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 13:27:31,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:31,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:31,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:31,672 INFO L175 Difference]: Start difference. First operand has 568 places, 2313 transitions, 68030 flow. Second operand 7 states and 590 transitions. [2023-08-27 13:27:31,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2341 transitions, 73096 flow [2023-08-27 13:27:49,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 2341 transitions, 72031 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-27 13:27:49,112 INFO L231 Difference]: Finished difference. Result has 569 places, 2313 transitions, 68087 flow [2023-08-27 13:27:49,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66967, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68087, PETRI_PLACES=569, PETRI_TRANSITIONS=2313} [2023-08-27 13:27:49,113 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 540 predicate places. [2023-08-27 13:27:49,113 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 2313 transitions, 68087 flow [2023-08-27 13:27:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:27:49,113 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] [2023-08-27 13:27:49,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-27 13:27:49,114 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:27:49,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:27:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1081632670, now seen corresponding path program 33 times [2023-08-27 13:27:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:27:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473964047] [2023-08-27 13:27:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:27:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:27:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:27:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:27:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:27:49,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473964047] [2023-08-27 13:27:49,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473964047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:27:49,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:27:49,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:27:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278876783] [2023-08-27 13:27:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:27:49,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:27:49,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:27:49,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:27:49,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:27:49,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:27:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 2313 transitions, 68087 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:27:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:27:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:27:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:28:00,721 INFO L124 PetriNetUnfolderBase]: 15089/22182 cut-off events. [2023-08-27 13:28:00,722 INFO L125 PetriNetUnfolderBase]: For 1117406/1117406 co-relation queries the response was YES. [2023-08-27 13:28:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260291 conditions, 22182 events. 15089/22182 cut-off events. For 1117406/1117406 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 141727 event pairs, 1595 based on Foata normal form. 18/22200 useless extension candidates. Maximal degree in co-relation 259852. Up to 10593 conditions per place. [2023-08-27 13:28:01,161 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1730 selfloop transitions, 810 changer transitions 7/2547 dead transitions. [2023-08-27 13:28:01,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2547 transitions, 78200 flow [2023-08-27 13:28:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:28:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:28:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 13:28:01,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 13:28:01,163 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 13:28:01,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 13:28:01,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:28:01,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 13:28:01,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:01,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:01,164 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:01,164 INFO L175 Difference]: Start difference. First operand has 569 places, 2313 transitions, 68087 flow. Second operand 7 states and 600 transitions. [2023-08-27 13:28:01,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2547 transitions, 78200 flow [2023-08-27 13:28:20,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 2547 transitions, 76634 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-27 13:28:20,209 INFO L231 Difference]: Finished difference. Result has 574 places, 2345 transitions, 69924 flow [2023-08-27 13:28:20,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66640, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69924, PETRI_PLACES=574, PETRI_TRANSITIONS=2345} [2023-08-27 13:28:20,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 545 predicate places. [2023-08-27 13:28:20,210 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 2345 transitions, 69924 flow [2023-08-27 13:28:20,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:20,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:28:20,210 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] [2023-08-27 13:28:20,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-27 13:28:20,210 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:28:20,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:28:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1755131736, now seen corresponding path program 17 times [2023-08-27 13:28:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:28:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121347479] [2023-08-27 13:28:20,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:28:20,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:28:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:28:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:28:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:28:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121347479] [2023-08-27 13:28:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121347479] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 13:28:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992531664] [2023-08-27 13:28:20,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 13:28:20,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:28:20,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:28:20,283 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 13:28:20,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 13:28:20,401 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 13:28:20,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 13:28:20,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 13:28:20,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 13:28:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:28:20,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 13:28:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:28:20,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992531664] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 13:28:20,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 13:28:20,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 13:28:20,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671558838] [2023-08-27 13:28:20,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:28:20,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:28:20,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:28:20,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:28:20,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 13:28:20,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 13:28:20,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2345 transitions, 69924 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:20,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:28:20,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 13:28:20,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:28:32,096 INFO L124 PetriNetUnfolderBase]: 14922/21915 cut-off events. [2023-08-27 13:28:32,096 INFO L125 PetriNetUnfolderBase]: For 1170835/1171286 co-relation queries the response was YES. [2023-08-27 13:28:32,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260895 conditions, 21915 events. 14922/21915 cut-off events. For 1170835/1171286 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 140061 event pairs, 1962 based on Foata normal form. 321/22159 useless extension candidates. Maximal degree in co-relation 260622. Up to 12905 conditions per place. [2023-08-27 13:28:32,631 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 1869 selfloop transitions, 500 changer transitions 0/2429 dead transitions. [2023-08-27 13:28:32,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 2429 transitions, 75922 flow [2023-08-27 13:28:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:28:32,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:28:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-08-27 13:28:32,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-27 13:28:32,633 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-08-27 13:28:32,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-08-27 13:28:32,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:28:32,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-08-27 13:28:32,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:32,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:32,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:32,634 INFO L175 Difference]: Start difference. First operand has 574 places, 2345 transitions, 69924 flow. Second operand 6 states and 544 transitions. [2023-08-27 13:28:32,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 2429 transitions, 75922 flow [2023-08-27 13:28:50,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 2429 transitions, 74408 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-08-27 13:28:50,669 INFO L231 Difference]: Finished difference. Result has 573 places, 2347 transitions, 69599 flow [2023-08-27 13:28:50,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=68362, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69599, PETRI_PLACES=573, PETRI_TRANSITIONS=2347} [2023-08-27 13:28:50,670 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 544 predicate places. [2023-08-27 13:28:50,670 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 2347 transitions, 69599 flow [2023-08-27 13:28:50,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:50,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:28:50,670 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] [2023-08-27 13:28:50,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-27 13:28:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 13:28:50,873 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:28:50,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:28:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2146327266, now seen corresponding path program 34 times [2023-08-27 13:28:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:28:50,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940010458] [2023-08-27 13:28:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:28:50,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:28:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:28:50,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:28:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:28:50,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940010458] [2023-08-27 13:28:50,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940010458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:28:50,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:28:50,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:28:50,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152722562] [2023-08-27 13:28:50,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:28:50,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:28:50,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:28:50,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:28:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:28:50,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:28:50,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 2347 transitions, 69599 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:28:50,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:28:50,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:28:50,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:29:02,697 INFO L124 PetriNetUnfolderBase]: 15075/22143 cut-off events. [2023-08-27 13:29:02,697 INFO L125 PetriNetUnfolderBase]: For 1142045/1142045 co-relation queries the response was YES. [2023-08-27 13:29:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261271 conditions, 22143 events. 15075/22143 cut-off events. For 1142045/1142045 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 141485 event pairs, 2693 based on Foata normal form. 8/22151 useless extension candidates. Maximal degree in co-relation 260715. Up to 18482 conditions per place. [2023-08-27 13:29:03,133 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1788 selfloop transitions, 594 changer transitions 0/2382 dead transitions. [2023-08-27 13:29:03,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 2382 transitions, 74895 flow [2023-08-27 13:29:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:29:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:29:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 13:29:03,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 13:29:03,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 13:29:03,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 13:29:03,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:29:03,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 13:29:03,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:03,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:03,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:03,136 INFO L175 Difference]: Start difference. First operand has 573 places, 2347 transitions, 69599 flow. Second operand 7 states and 594 transitions. [2023-08-27 13:29:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 2382 transitions, 74895 flow [2023-08-27 13:29:22,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 2382 transitions, 74379 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-27 13:29:22,717 INFO L231 Difference]: Finished difference. Result has 575 places, 2349 transitions, 70345 flow [2023-08-27 13:29:22,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69085, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70345, PETRI_PLACES=575, PETRI_TRANSITIONS=2349} [2023-08-27 13:29:22,718 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 546 predicate places. [2023-08-27 13:29:22,718 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 2349 transitions, 70345 flow [2023-08-27 13:29:22,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:22,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:29:22,718 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] [2023-08-27 13:29:22,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-27 13:29:22,718 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:29:22,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:29:22,719 INFO L85 PathProgramCache]: Analyzing trace with hash -645454056, now seen corresponding path program 35 times [2023-08-27 13:29:22,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:29:22,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149865153] [2023-08-27 13:29:22,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:29:22,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:29:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:29:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:29:22,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:29:22,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149865153] [2023-08-27 13:29:22,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149865153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:29:22,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:29:22,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:29:22,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357674865] [2023-08-27 13:29:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:29:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:29:22,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:29:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:29:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:29:22,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:29:22,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 2349 transitions, 70345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:22,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:29:22,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:29:22,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:29:34,530 INFO L124 PetriNetUnfolderBase]: 15073/22141 cut-off events. [2023-08-27 13:29:34,531 INFO L125 PetriNetUnfolderBase]: For 1150491/1150491 co-relation queries the response was YES. [2023-08-27 13:29:34,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263989 conditions, 22141 events. 15073/22141 cut-off events. For 1150491/1150491 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 141566 event pairs, 2691 based on Foata normal form. 2/22143 useless extension candidates. Maximal degree in co-relation 263423. Up to 18474 conditions per place. [2023-08-27 13:29:34,953 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1779 selfloop transitions, 596 changer transitions 2/2377 dead transitions. [2023-08-27 13:29:34,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 2377 transitions, 75496 flow [2023-08-27 13:29:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:29:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:29:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 13:29:34,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 13:29:34,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 13:29:34,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 13:29:34,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:29:34,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 13:29:34,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:34,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:34,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:34,956 INFO L175 Difference]: Start difference. First operand has 575 places, 2349 transitions, 70345 flow. Second operand 7 states and 590 transitions. [2023-08-27 13:29:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 2377 transitions, 75496 flow [2023-08-27 13:29:53,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 2377 transitions, 74873 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 13:29:53,172 INFO L231 Difference]: Finished difference. Result has 578 places, 2349 transitions, 70922 flow [2023-08-27 13:29:53,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69670, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70922, PETRI_PLACES=578, PETRI_TRANSITIONS=2349} [2023-08-27 13:29:53,173 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 549 predicate places. [2023-08-27 13:29:53,173 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 2349 transitions, 70922 flow [2023-08-27 13:29:53,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:53,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:29:53,173 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] [2023-08-27 13:29:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-27 13:29:53,174 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:29:53,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:29:53,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1813801420, now seen corresponding path program 36 times [2023-08-27 13:29:53,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:29:53,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228219940] [2023-08-27 13:29:53,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:29:53,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:29:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:29:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:29:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:29:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228219940] [2023-08-27 13:29:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228219940] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:29:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:29:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:29:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235704229] [2023-08-27 13:29:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:29:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:29:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:29:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:29:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:29:53,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:29:53,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 2349 transitions, 70922 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:29:53,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:29:53,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:29:53,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:30:05,163 INFO L124 PetriNetUnfolderBase]: 15129/22250 cut-off events. [2023-08-27 13:30:05,163 INFO L125 PetriNetUnfolderBase]: For 1189626/1189626 co-relation queries the response was YES. [2023-08-27 13:30:05,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265665 conditions, 22250 events. 15129/22250 cut-off events. For 1189626/1189626 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 142707 event pairs, 2637 based on Foata normal form. 20/22270 useless extension candidates. Maximal degree in co-relation 265098. Up to 18426 conditions per place. [2023-08-27 13:30:05,600 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1749 selfloop transitions, 667 changer transitions 5/2421 dead transitions. [2023-08-27 13:30:05,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2421 transitions, 77199 flow [2023-08-27 13:30:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:30:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:30:05,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 13:30:05,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 13:30:05,601 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 13:30:05,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 13:30:05,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:30:05,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 13:30:05,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:05,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:05,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:05,603 INFO L175 Difference]: Start difference. First operand has 578 places, 2349 transitions, 70922 flow. Second operand 7 states and 597 transitions. [2023-08-27 13:30:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2421 transitions, 77199 flow [2023-08-27 13:30:24,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2421 transitions, 75968 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 13:30:24,584 INFO L231 Difference]: Finished difference. Result has 581 places, 2358 transitions, 71398 flow [2023-08-27 13:30:24,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69702, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=71398, PETRI_PLACES=581, PETRI_TRANSITIONS=2358} [2023-08-27 13:30:24,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2023-08-27 13:30:24,585 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 2358 transitions, 71398 flow [2023-08-27 13:30:24,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:24,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:30:24,586 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] [2023-08-27 13:30:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-27 13:30:24,586 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 13:30:24,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:30:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash -548989458, now seen corresponding path program 37 times [2023-08-27 13:30:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:30:24,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540423894] [2023-08-27 13:30:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:30:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:30:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:30:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:30:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:30:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540423894] [2023-08-27 13:30:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540423894] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:30:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:30:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:30:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145884722] [2023-08-27 13:30:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:30:24,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:30:24,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:30:24,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:30:24,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:30:24,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 13:30:24,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 2358 transitions, 71398 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:24,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:30:24,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 13:30:24,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:30:36,432 INFO L124 PetriNetUnfolderBase]: 15090/22156 cut-off events. [2023-08-27 13:30:36,432 INFO L125 PetriNetUnfolderBase]: For 1171734/1171734 co-relation queries the response was YES. [2023-08-27 13:30:36,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265263 conditions, 22156 events. 15090/22156 cut-off events. For 1171734/1171734 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 141346 event pairs, 2199 based on Foata normal form. 32/22188 useless extension candidates. Maximal degree in co-relation 264828. Up to 14431 conditions per place. [2023-08-27 13:30:36,877 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1824 selfloop transitions, 647 changer transitions 1/2472 dead transitions. [2023-08-27 13:30:36,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2472 transitions, 78292 flow [2023-08-27 13:30:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:30:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:30:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2023-08-27 13:30:36,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45413533834586467 [2023-08-27 13:30:36,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2023-08-27 13:30:36,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2023-08-27 13:30:36,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:30:36,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2023-08-27 13:30:36,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:36,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:36,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:30:36,880 INFO L175 Difference]: Start difference. First operand has 581 places, 2358 transitions, 71398 flow. Second operand 7 states and 604 transitions. [2023-08-27 13:30:36,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 2472 transitions, 78292 flow Received shutdown request... [2023-08-27 13:30:41,190 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 13:30:41,191 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 13:30:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-27 13:30:41,192 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 13:30:41,192 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 13:30:41,193 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 13:30:41,193 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 13:30:41,193 INFO L445 BasicCegarLoop]: Path program histogram: [37, 17, 10, 1] [2023-08-27 13:30:41,195 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 13:30:41,195 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 13:30:41,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:30:41 BasicIcfg [2023-08-27 13:30:41,196 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 13:30:41,196 INFO L158 Benchmark]: Toolchain (without parser) took 819869.60ms. Allocated memory was 367.0MB in the beginning and 9.6GB in the end (delta: 9.2GB). Free memory was 341.3MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 8.1GB. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.01ms. Allocated memory is still 367.0MB. Free memory was 340.7MB in the beginning and 330.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.97ms. Allocated memory is still 367.0MB. Free memory was 330.2MB in the beginning and 328.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: Boogie Preprocessor took 31.49ms. Allocated memory is still 367.0MB. Free memory was 328.3MB in the beginning and 327.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: RCFGBuilder took 281.03ms. Allocated memory is still 367.0MB. Free memory was 327.3MB in the beginning and 312.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 13:30:41,197 INFO L158 Benchmark]: TraceAbstraction took 819359.44ms. Allocated memory was 367.0MB in the beginning and 9.6GB in the end (delta: 9.2GB). Free memory was 311.7MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. [2023-08-27 13:30:41,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 343.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 167.01ms. Allocated memory is still 367.0MB. Free memory was 340.7MB in the beginning and 330.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.97ms. Allocated memory is still 367.0MB. Free memory was 330.2MB in the beginning and 328.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.49ms. Allocated memory is still 367.0MB. Free memory was 328.3MB in the beginning and 327.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 281.03ms. Allocated memory is still 367.0MB. Free memory was 327.3MB in the beginning and 312.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 819359.44ms. Allocated memory was 367.0MB in the beginning and 9.6GB in the end (delta: 9.2GB). Free memory was 311.7MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 8.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 98 PlacesBefore, 29 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 1467 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1467, independent: 1467, independent conditional: 0, independent unconditional: 1467, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 809, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1467, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 809, unknown conditional: 0, unknown unconditional: 809] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 136 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 819.2s, OverallIterations: 65, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 799.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2973 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2973 mSDsluCounter, 1841 SdHoareTripleChecker+Invalid, 9.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1339 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23047 IncrementalHoareTripleChecker+Invalid, 23218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 502 mSDtfsCounter, 23047 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1440 GetRequests, 780 SyntacticMatches, 25 SemanticMatches, 635 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2694 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71398occurred in iteration=64, InterpolantAutomatonStates: 619, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 1719 NumberOfCodeBlocks, 1719 NumberOfCodeBlocksAsserted, 103 NumberOfCheckSat, 2032 ConstructedInterpolants, 0 QuantifiedInterpolants, 11691 SizeOfPredicates, 106 NumberOfNonLiveVariables, 3339 ConjunctsInSsa, 281 ConjunctsInUnsatCore, 107 InterpolantComputations, 51 PerfectInterpolantSequences, 50/106 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown