/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:56:24,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:56:24,998 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 00:56:25,007 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:56:25,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:56:25,039 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:56:25,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:56:25,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:56:25,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:56:25,044 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:56:25,045 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:56:25,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:56:25,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:56:25,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:56:25,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:56:25,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:56:25,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:56:25,047 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:56:25,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:56:25,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:56:25,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:56:25,048 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:56:25,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:56:25,049 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:56:25,049 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:56:25,049 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:56:25,050 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:56:25,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:56:25,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:56:25,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:56:25,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:56:25,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:56:25,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:56:25,052 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:56:25,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:56:25,052 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:56:25,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:56:25,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:56:25,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:56:25,346 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:56:25,346 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:56:25,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-08-24 00:56:26,443 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:56:26,611 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:56:26,611 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c [2023-08-24 00:56:26,619 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dabb79b0/37902994b6f14fb89310dbb30875ff52/FLAGc3e79b380 [2023-08-24 00:56:26,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dabb79b0/37902994b6f14fb89310dbb30875ff52 [2023-08-24 00:56:26,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:56:26,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:56:26,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:56:26,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:56:26,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:56:26,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:26,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63496b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26, skipping insertion in model container [2023-08-24 00:56:26,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:26,680 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:56:26,878 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2023-08-24 00:56:26,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:56:26,898 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:56:26,933 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2023-08-24 00:56:26,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:56:26,962 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:56:26,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26 WrapperNode [2023-08-24 00:56:26,962 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:56:26,963 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:56:26,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:56:26,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:56:26,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,006 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,041 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 280 [2023-08-24 00:56:27,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:56:27,042 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:56:27,042 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:56:27,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:56:27,051 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:56:27,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:56:27,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:56:27,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:56:27,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (1/1) ... [2023-08-24 00:56:27,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:56:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:27,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 00:56:27,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 00:56:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:56:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:56:27,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:56:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:56:27,166 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 00:56:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 00:56:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 00:56:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 00:56:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 00:56:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 00:56:27,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:56:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 00:56:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:56:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:56:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:56:27,169 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 00:56:27,286 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:56:27,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:56:27,717 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:56:27,734 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:56:27,734 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 00:56:27,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:56:27 BoogieIcfgContainer [2023-08-24 00:56:27,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:56:27,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:56:27,740 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:56:27,743 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:56:27,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:56:26" (1/3) ... [2023-08-24 00:56:27,744 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419b54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:56:27, skipping insertion in model container [2023-08-24 00:56:27,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:56:26" (2/3) ... [2023-08-24 00:56:27,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2419b54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:56:27, skipping insertion in model container [2023-08-24 00:56:27,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:56:27" (3/3) ... [2023-08-24 00:56:27,746 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2023-08-24 00:56:27,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:56:27,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:56:27,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:56:27,892 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 00:56:27,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 666 flow [2023-08-24 00:56:28,096 INFO L124 PetriNetUnfolderBase]: 28/318 cut-off events. [2023-08-24 00:56:28,097 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 00:56:28,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 28/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 492 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 247. Up to 2 conditions per place. [2023-08-24 00:56:28,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 666 flow [2023-08-24 00:56:28,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 308 transitions, 634 flow [2023-08-24 00:56:28,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:56:28,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 308 transitions, 634 flow [2023-08-24 00:56:28,132 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 308 transitions, 634 flow [2023-08-24 00:56:28,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 308 transitions, 634 flow [2023-08-24 00:56:28,173 INFO L124 PetriNetUnfolderBase]: 28/308 cut-off events. [2023-08-24 00:56:28,173 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 00:56:28,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 308 events. 28/308 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 491 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 247. Up to 2 conditions per place. [2023-08-24 00:56:28,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 15390 [2023-08-24 00:56:36,573 INFO L134 LiptonReduction]: Checked pairs total: 14265 [2023-08-24 00:56:36,573 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-08-24 00:56:36,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:56:36,590 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;@6e4d783, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:56:36,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 00:56:36,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:56:36,596 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-08-24 00:56:36,596 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 00:56:36,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:36,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:36,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:36,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:36,601 INFO L85 PathProgramCache]: Analyzing trace with hash 4830115, now seen corresponding path program 1 times [2023-08-24 00:56:36,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:36,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372831271] [2023-08-24 00:56:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:36,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:56:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:37,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372831271] [2023-08-24 00:56:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372831271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:56:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398621094] [2023-08-24 00:56:37,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:37,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:56:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:37,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:56:37,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:56:37,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 672 [2023-08-24 00:56:37,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:37,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 672 [2023-08-24 00:56:37,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:37,180 INFO L124 PetriNetUnfolderBase]: 370/545 cut-off events. [2023-08-24 00:56:37,180 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-24 00:56:37,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 545 events. 370/545 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1530 event pairs, 253 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 936. Up to 543 conditions per place. [2023-08-24 00:56:37,184 INFO L140 encePairwiseOnDemand]: 664/672 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-08-24 00:56:37,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 150 flow [2023-08-24 00:56:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:56:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:56:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-08-24 00:56:37,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2023-08-24 00:56:37,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-08-24 00:56:37,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-08-24 00:56:37,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:37,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-08-24 00:56:37,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 672.0) internal successors, (2688), 4 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 672.0) internal successors, (2688), 4 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,226 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 3 states and 805 transitions. [2023-08-24 00:56:37,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 150 flow [2023-08-24 00:56:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 00:56:37,231 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 98 flow [2023-08-24 00:56:37,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-08-24 00:56:37,235 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-24 00:56:37,235 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 98 flow [2023-08-24 00:56:37,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:37,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:37,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:56:37,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:37,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash -573151743, now seen corresponding path program 1 times [2023-08-24 00:56:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855777894] [2023-08-24 00:56:37,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:37,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:56:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855777894] [2023-08-24 00:56:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855777894] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894694112] [2023-08-24 00:56:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:37,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:37,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:37,505 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:37,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 00:56:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:37,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 00:56:37,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:56:37,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:56:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:56:37,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894694112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:56:37,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:56:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-24 00:56:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448966471] [2023-08-24 00:56:37,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:56:37,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 00:56:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 00:56:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-24 00:56:37,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 672 [2023-08-24 00:56:37,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 98 flow. Second operand has 8 states, 8 states have (on average 260.375) internal successors, (2083), 8 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:37,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 672 [2023-08-24 00:56:37,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:37,877 INFO L124 PetriNetUnfolderBase]: 370/554 cut-off events. [2023-08-24 00:56:37,877 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 00:56:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 554 events. 370/554 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1530 event pairs, 253 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 1106. Up to 543 conditions per place. [2023-08-24 00:56:37,880 INFO L140 encePairwiseOnDemand]: 665/672 looper letters, 27 selfloop transitions, 15 changer transitions 0/42 dead transitions. [2023-08-24 00:56:37,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 218 flow [2023-08-24 00:56:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:56:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:56:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1587 transitions. [2023-08-24 00:56:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39360119047619047 [2023-08-24 00:56:37,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1587 transitions. [2023-08-24 00:56:37,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1587 transitions. [2023-08-24 00:56:37,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:37,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1587 transitions. [2023-08-24 00:56:37,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.5) internal successors, (1587), 6 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,897 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,897 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 98 flow. Second operand 6 states and 1587 transitions. [2023-08-24 00:56:37,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 218 flow [2023-08-24 00:56:37,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:37,899 INFO L231 Difference]: Finished difference. Result has 38 places, 42 transitions, 188 flow [2023-08-24 00:56:37,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=38, PETRI_TRANSITIONS=42} [2023-08-24 00:56:37,900 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-24 00:56:37,900 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 42 transitions, 188 flow [2023-08-24 00:56:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 260.375) internal successors, (2083), 8 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:37,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:37,902 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:37,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:38,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:38,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:38,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:38,108 INFO L85 PathProgramCache]: Analyzing trace with hash -299374539, now seen corresponding path program 2 times [2023-08-24 00:56:38,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:38,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77031383] [2023-08-24 00:56:38,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 00:56:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:38,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77031383] [2023-08-24 00:56:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77031383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234050157] [2023-08-24 00:56:38,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:56:38,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:38,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:38,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:38,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 00:56:38,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 00:56:38,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:38,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 00:56:38,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:38,529 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 00:56:38,529 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 00:56:38,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234050157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:38,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 00:56:38,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-08-24 00:56:38,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668124084] [2023-08-24 00:56:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:38,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:56:38,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:56:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 00:56:38,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 672 [2023-08-24 00:56:38,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:38,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:38,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 672 [2023-08-24 00:56:38,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:38,782 INFO L124 PetriNetUnfolderBase]: 644/962 cut-off events. [2023-08-24 00:56:38,782 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 00:56:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 962 events. 644/962 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3401 event pairs, 253 based on Foata normal form. 14/762 useless extension candidates. Maximal degree in co-relation 1928. Up to 555 conditions per place. [2023-08-24 00:56:38,787 INFO L140 encePairwiseOnDemand]: 668/672 looper letters, 69 selfloop transitions, 3 changer transitions 2/74 dead transitions. [2023-08-24 00:56:38,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 74 transitions, 407 flow [2023-08-24 00:56:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 00:56:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 00:56:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1179 transitions. [2023-08-24 00:56:38,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43861607142857145 [2023-08-24 00:56:38,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1179 transitions. [2023-08-24 00:56:38,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1179 transitions. [2023-08-24 00:56:38,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:38,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1179 transitions. [2023-08-24 00:56:38,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.75) internal successors, (1179), 4 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:38,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:38,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:38,799 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 188 flow. Second operand 4 states and 1179 transitions. [2023-08-24 00:56:38,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 74 transitions, 407 flow [2023-08-24 00:56:38,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 74 transitions, 383 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:38,802 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 184 flow [2023-08-24 00:56:38,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-08-24 00:56:38,803 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-24 00:56:38,803 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 184 flow [2023-08-24 00:56:38,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:38,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:38,804 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:38,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:39,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-24 00:56:39,009 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:39,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:39,009 INFO L85 PathProgramCache]: Analyzing trace with hash -17229335, now seen corresponding path program 3 times [2023-08-24 00:56:39,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:39,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300814761] [2023-08-24 00:56:39,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:39,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 00:56:39,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300814761] [2023-08-24 00:56:39,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300814761] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:39,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56035647] [2023-08-24 00:56:39,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:56:39,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:39,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:39,222 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:39,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 00:56:39,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 00:56:39,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:39,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 00:56:39,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 00:56:39,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 00:56:39,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56035647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:39,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 00:56:39,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-08-24 00:56:39,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021120632] [2023-08-24 00:56:39,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:39,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:56:39,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:39,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:56:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 00:56:39,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 672 [2023-08-24 00:56:39,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:39,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:39,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 672 [2023-08-24 00:56:39,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:39,605 INFO L124 PetriNetUnfolderBase]: 758/1124 cut-off events. [2023-08-24 00:56:39,605 INFO L125 PetriNetUnfolderBase]: For 337/337 co-relation queries the response was YES. [2023-08-24 00:56:39,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1124 events. 758/1124 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4203 event pairs, 104 based on Foata normal form. 24/974 useless extension candidates. Maximal degree in co-relation 2598. Up to 775 conditions per place. [2023-08-24 00:56:39,611 INFO L140 encePairwiseOnDemand]: 666/672 looper letters, 63 selfloop transitions, 5 changer transitions 1/69 dead transitions. [2023-08-24 00:56:39,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 69 transitions, 392 flow [2023-08-24 00:56:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 00:56:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 00:56:39,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1170 transitions. [2023-08-24 00:56:39,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43526785714285715 [2023-08-24 00:56:39,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1170 transitions. [2023-08-24 00:56:39,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1170 transitions. [2023-08-24 00:56:39,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:39,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1170 transitions. [2023-08-24 00:56:39,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:39,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:39,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:39,623 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 184 flow. Second operand 4 states and 1170 transitions. [2023-08-24 00:56:39,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 69 transitions, 392 flow [2023-08-24 00:56:39,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 69 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:39,627 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 213 flow [2023-08-24 00:56:39,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-24 00:56:39,627 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-24 00:56:39,628 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 213 flow [2023-08-24 00:56:39,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:39,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:39,629 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:39,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:39,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:39,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:39,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:39,835 INFO L85 PathProgramCache]: Analyzing trace with hash -343661567, now seen corresponding path program 4 times [2023-08-24 00:56:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908079884] [2023-08-24 00:56:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:39,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 00:56:40,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:40,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908079884] [2023-08-24 00:56:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908079884] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242214622] [2023-08-24 00:56:40,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 00:56:40,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:40,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:40,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:40,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 00:56:40,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 00:56:40,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:40,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 00:56:40,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 00:56:40,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:56:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 00:56:40,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242214622] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:56:40,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:56:40,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-24 00:56:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784162178] [2023-08-24 00:56:40,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:56:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 00:56:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 00:56:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-24 00:56:40,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 672 [2023-08-24 00:56:40,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 258.47058823529414) internal successors, (4394), 17 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:40,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:40,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 672 [2023-08-24 00:56:40,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:40,603 INFO L124 PetriNetUnfolderBase]: 758/1127 cut-off events. [2023-08-24 00:56:40,604 INFO L125 PetriNetUnfolderBase]: For 961/961 co-relation queries the response was YES. [2023-08-24 00:56:40,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 1127 events. 758/1127 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3901 event pairs, 525 based on Foata normal form. 1/954 useless extension candidates. Maximal degree in co-relation 2770. Up to 1113 conditions per place. [2023-08-24 00:56:40,610 INFO L140 encePairwiseOnDemand]: 665/672 looper letters, 31 selfloop transitions, 18 changer transitions 0/49 dead transitions. [2023-08-24 00:56:40,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 329 flow [2023-08-24 00:56:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 00:56:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 00:56:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1840 transitions. [2023-08-24 00:56:40,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2023-08-24 00:56:40,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1840 transitions. [2023-08-24 00:56:40,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1840 transitions. [2023-08-24 00:56:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:40,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1840 transitions. [2023-08-24 00:56:40,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 262.85714285714283) internal successors, (1840), 7 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:40,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 672.0) internal successors, (5376), 8 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:40,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 672.0) internal successors, (5376), 8 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:40,630 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 213 flow. Second operand 7 states and 1840 transitions. [2023-08-24 00:56:40,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 329 flow [2023-08-24 00:56:40,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:40,633 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 278 flow [2023-08-24 00:56:40,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-24 00:56:40,635 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-08-24 00:56:40,635 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 278 flow [2023-08-24 00:56:40,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 258.47058823529414) internal successors, (4394), 17 states have internal predecessors, (4394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:40,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:40,637 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:40,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:40,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:40,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:40,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 438840867, now seen corresponding path program 5 times [2023-08-24 00:56:40,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:40,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687450598] [2023-08-24 00:56:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:40,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:41,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687450598] [2023-08-24 00:56:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687450598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:56:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692028784] [2023-08-24 00:56:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:41,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:56:41,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:56:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:56:41,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 672 [2023-08-24 00:56:41,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:41,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 672 [2023-08-24 00:56:41,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:41,414 INFO L124 PetriNetUnfolderBase]: 1162/1709 cut-off events. [2023-08-24 00:56:41,414 INFO L125 PetriNetUnfolderBase]: For 1246/1246 co-relation queries the response was YES. [2023-08-24 00:56:41,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 1709 events. 1162/1709 cut-off events. For 1246/1246 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6625 event pairs, 525 based on Foata normal form. 2/1407 useless extension candidates. Maximal degree in co-relation 4187. Up to 1128 conditions per place. [2023-08-24 00:56:41,423 INFO L140 encePairwiseOnDemand]: 669/672 looper letters, 65 selfloop transitions, 2 changer transitions 2/69 dead transitions. [2023-08-24 00:56:41,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 493 flow [2023-08-24 00:56:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:56:41,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:56:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 884 transitions. [2023-08-24 00:56:41,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384920634920635 [2023-08-24 00:56:41,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 884 transitions. [2023-08-24 00:56:41,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 884 transitions. [2023-08-24 00:56:41,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:41,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 884 transitions. [2023-08-24 00:56:41,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 294.6666666666667) internal successors, (884), 3 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 672.0) internal successors, (2688), 4 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 672.0) internal successors, (2688), 4 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,432 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 278 flow. Second operand 3 states and 884 transitions. [2023-08-24 00:56:41,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 493 flow [2023-08-24 00:56:41,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 457 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 00:56:41,435 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 254 flow [2023-08-24 00:56:41,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-24 00:56:41,436 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-24 00:56:41,436 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 254 flow [2023-08-24 00:56:41,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:41,437 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:41,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 00:56:41,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:41,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:41,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1718620290, now seen corresponding path program 1 times [2023-08-24 00:56:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282820141] [2023-08-24 00:56:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:41,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282820141] [2023-08-24 00:56:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282820141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:41,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 00:56:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678426150] [2023-08-24 00:56:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:41,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:41,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:41,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 00:56:41,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:41,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:41,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:41,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:42,212 INFO L124 PetriNetUnfolderBase]: 2129/3140 cut-off events. [2023-08-24 00:56:42,213 INFO L125 PetriNetUnfolderBase]: For 2750/2750 co-relation queries the response was YES. [2023-08-24 00:56:42,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8330 conditions, 3140 events. 2129/3140 cut-off events. For 2750/2750 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14474 event pairs, 879 based on Foata normal form. 26/2910 useless extension candidates. Maximal degree in co-relation 8232. Up to 1756 conditions per place. [2023-08-24 00:56:42,230 INFO L140 encePairwiseOnDemand]: 667/672 looper letters, 83 selfloop transitions, 3 changer transitions 17/103 dead transitions. [2023-08-24 00:56:42,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 103 transitions, 671 flow [2023-08-24 00:56:42,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:56:42,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:56:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1448 transitions. [2023-08-24 00:56:42,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2023-08-24 00:56:42,235 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1448 transitions. [2023-08-24 00:56:42,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1448 transitions. [2023-08-24 00:56:42,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:42,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1448 transitions. [2023-08-24 00:56:42,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.6) internal successors, (1448), 5 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:42,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:42,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:42,244 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 254 flow. Second operand 5 states and 1448 transitions. [2023-08-24 00:56:42,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 103 transitions, 671 flow [2023-08-24 00:56:42,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 103 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:42,250 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 274 flow [2023-08-24 00:56:42,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-24 00:56:42,250 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-24 00:56:42,251 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 274 flow [2023-08-24 00:56:42,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.2) internal successors, (1401), 5 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:42,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:42,264 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:42,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 00:56:42,264 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:42,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:42,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1531362302, now seen corresponding path program 2 times [2023-08-24 00:56:42,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:42,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245749846] [2023-08-24 00:56:42,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:42,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:42,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245749846] [2023-08-24 00:56:42,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245749846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:42,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483825067] [2023-08-24 00:56:42,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:56:42,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:42,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:42,540 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:42,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 00:56:42,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 00:56:42,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:42,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 00:56:42,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:42,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 00:56:42,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483825067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:42,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 00:56:42,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-08-24 00:56:42,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973753948] [2023-08-24 00:56:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:42,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:56:42,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:42,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:56:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-24 00:56:42,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 672 [2023-08-24 00:56:42,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:42,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:42,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 672 [2023-08-24 00:56:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:43,118 INFO L124 PetriNetUnfolderBase]: 1751/2550 cut-off events. [2023-08-24 00:56:43,118 INFO L125 PetriNetUnfolderBase]: For 3420/3420 co-relation queries the response was YES. [2023-08-24 00:56:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7573 conditions, 2550 events. 1751/2550 cut-off events. For 3420/3420 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10971 event pairs, 679 based on Foata normal form. 72/2622 useless extension candidates. Maximal degree in co-relation 7472. Up to 1504 conditions per place. [2023-08-24 00:56:43,135 INFO L140 encePairwiseOnDemand]: 667/672 looper letters, 77 selfloop transitions, 6 changer transitions 3/86 dead transitions. [2023-08-24 00:56:43,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 86 transitions, 575 flow [2023-08-24 00:56:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 00:56:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 00:56:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1177 transitions. [2023-08-24 00:56:43,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43787202380952384 [2023-08-24 00:56:43,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1177 transitions. [2023-08-24 00:56:43,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1177 transitions. [2023-08-24 00:56:43,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:43,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1177 transitions. [2023-08-24 00:56:43,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 294.25) internal successors, (1177), 4 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) [2023-08-24 00:56:43,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:43,145 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 672.0) internal successors, (3360), 5 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:43,145 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 274 flow. Second operand 4 states and 1177 transitions. [2023-08-24 00:56:43,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 86 transitions, 575 flow [2023-08-24 00:56:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 563 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 00:56:43,150 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 292 flow [2023-08-24 00:56:43,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-24 00:56:43,151 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 24 predicate places. [2023-08-24 00:56:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 292 flow [2023-08-24 00:56:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:43,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:43,152 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:43,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:43,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:43,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:43,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:43,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1001921398, now seen corresponding path program 1 times [2023-08-24 00:56:43,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844291096] [2023-08-24 00:56:43,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:43,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:43,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844291096] [2023-08-24 00:56:43,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844291096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 00:56:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318007505] [2023-08-24 00:56:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:43,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:43,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 00:56:43,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:43,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:43,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:43,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:43,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:44,080 INFO L124 PetriNetUnfolderBase]: 1970/2858 cut-off events. [2023-08-24 00:56:44,081 INFO L125 PetriNetUnfolderBase]: For 4531/4531 co-relation queries the response was YES. [2023-08-24 00:56:44,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8909 conditions, 2858 events. 1970/2858 cut-off events. For 4531/4531 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12620 event pairs, 699 based on Foata normal form. 20/2878 useless extension candidates. Maximal degree in co-relation 8808. Up to 1481 conditions per place. [2023-08-24 00:56:44,097 INFO L140 encePairwiseOnDemand]: 667/672 looper letters, 81 selfloop transitions, 6 changer transitions 16/103 dead transitions. [2023-08-24 00:56:44,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 720 flow [2023-08-24 00:56:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:56:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:56:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1448 transitions. [2023-08-24 00:56:44,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2023-08-24 00:56:44,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1448 transitions. [2023-08-24 00:56:44,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1448 transitions. [2023-08-24 00:56:44,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:44,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1448 transitions. [2023-08-24 00:56:44,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.6) internal successors, (1448), 5 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:44,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:44,108 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:44,108 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 292 flow. Second operand 5 states and 1448 transitions. [2023-08-24 00:56:44,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 720 flow [2023-08-24 00:56:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 690 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 00:56:44,114 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 322 flow [2023-08-24 00:56:44,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-24 00:56:44,114 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 27 predicate places. [2023-08-24 00:56:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 322 flow [2023-08-24 00:56:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:44,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:44,115 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:44,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 00:56:44,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:44,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1205194648, now seen corresponding path program 2 times [2023-08-24 00:56:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669980130] [2023-08-24 00:56:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:44,328 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:44,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:44,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669980130] [2023-08-24 00:56:44,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669980130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:44,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718456694] [2023-08-24 00:56:44,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:56:44,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:44,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:44,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:44,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 00:56:44,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:56:44,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:44,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:56:44,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:44,714 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:44,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:56:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:44,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718456694] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:44,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:56:44,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2023-08-24 00:56:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523289730] [2023-08-24 00:56:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:44,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:44,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:44,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 00:56:44,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:44,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:44,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:44,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:44,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:45,312 INFO L124 PetriNetUnfolderBase]: 1986/2869 cut-off events. [2023-08-24 00:56:45,312 INFO L125 PetriNetUnfolderBase]: For 5228/5228 co-relation queries the response was YES. [2023-08-24 00:56:45,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 2869 events. 1986/2869 cut-off events. For 5228/5228 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12239 event pairs, 267 based on Foata normal form. 36/2905 useless extension candidates. Maximal degree in co-relation 9352. Up to 713 conditions per place. [2023-08-24 00:56:45,339 INFO L140 encePairwiseOnDemand]: 664/672 looper letters, 112 selfloop transitions, 22 changer transitions 4/138 dead transitions. [2023-08-24 00:56:45,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 138 transitions, 1007 flow [2023-08-24 00:56:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 00:56:45,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 00:56:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-08-24 00:56:45,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4281462585034014 [2023-08-24 00:56:45,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-08-24 00:56:45,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-08-24 00:56:45,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:45,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-08-24 00:56:45,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:45,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 672.0) internal successors, (5376), 8 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:45,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 672.0) internal successors, (5376), 8 states have internal predecessors, (5376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:45,355 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 322 flow. Second operand 7 states and 2014 transitions. [2023-08-24 00:56:45,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 138 transitions, 1007 flow [2023-08-24 00:56:45,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 138 transitions, 989 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 00:56:45,367 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 459 flow [2023-08-24 00:56:45,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2023-08-24 00:56:45,369 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-08-24 00:56:45,369 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 459 flow [2023-08-24 00:56:45,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:45,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:45,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:45,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:45,576 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 [2023-08-24 00:56:45,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:45,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 865371528, now seen corresponding path program 3 times [2023-08-24 00:56:45,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:45,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549895027] [2023-08-24 00:56:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:45,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549895027] [2023-08-24 00:56:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549895027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:45,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754040625] [2023-08-24 00:56:45,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:56:45,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:45,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:45,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:45,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 00:56:46,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 00:56:46,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:46,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:56:46,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:46,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:56:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:46,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754040625] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:46,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 00:56:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-08-24 00:56:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348077383] [2023-08-24 00:56:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:46,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-24 00:56:46,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:46,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:46,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:46,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:46,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:46,698 INFO L124 PetriNetUnfolderBase]: 2074/2993 cut-off events. [2023-08-24 00:56:46,698 INFO L125 PetriNetUnfolderBase]: For 6580/6580 co-relation queries the response was YES. [2023-08-24 00:56:46,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10675 conditions, 2993 events. 2074/2993 cut-off events. For 6580/6580 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12932 event pairs, 473 based on Foata normal form. 36/3029 useless extension candidates. Maximal degree in co-relation 10570. Up to 1123 conditions per place. [2023-08-24 00:56:46,714 INFO L140 encePairwiseOnDemand]: 666/672 looper letters, 96 selfloop transitions, 21 changer transitions 1/118 dead transitions. [2023-08-24 00:56:46,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 118 transitions, 905 flow [2023-08-24 00:56:46,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:56:46,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:56:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1447 transitions. [2023-08-24 00:56:46,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43065476190476193 [2023-08-24 00:56:46,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1447 transitions. [2023-08-24 00:56:46,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1447 transitions. [2023-08-24 00:56:46,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:46,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1447 transitions. [2023-08-24 00:56:46,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.4) internal successors, (1447), 5 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:46,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:46,726 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 459 flow. Second operand 5 states and 1447 transitions. [2023-08-24 00:56:46,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 118 transitions, 905 flow [2023-08-24 00:56:46,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 894 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:46,749 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 535 flow [2023-08-24 00:56:46,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2023-08-24 00:56:46,749 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 36 predicate places. [2023-08-24 00:56:46,749 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 535 flow [2023-08-24 00:56:46,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:46,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:46,750 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:46,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:46,956 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 [2023-08-24 00:56:46,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:46,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:46,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1560599208, now seen corresponding path program 4 times [2023-08-24 00:56:46,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:46,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15903989] [2023-08-24 00:56:46,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:46,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:47,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:47,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15903989] [2023-08-24 00:56:47,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15903989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:47,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:47,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 00:56:47,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566033152] [2023-08-24 00:56:47,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:47,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:47,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:47,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 00:56:47,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 535 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:47,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:47,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:47,643 INFO L124 PetriNetUnfolderBase]: 2054/2973 cut-off events. [2023-08-24 00:56:47,643 INFO L125 PetriNetUnfolderBase]: For 8659/8659 co-relation queries the response was YES. [2023-08-24 00:56:47,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11493 conditions, 2973 events. 2054/2973 cut-off events. For 8659/8659 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12676 event pairs, 759 based on Foata normal form. 20/2993 useless extension candidates. Maximal degree in co-relation 11386. Up to 1924 conditions per place. [2023-08-24 00:56:47,658 INFO L140 encePairwiseOnDemand]: 667/672 looper letters, 89 selfloop transitions, 13 changer transitions 18/120 dead transitions. [2023-08-24 00:56:47,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 120 transitions, 1006 flow [2023-08-24 00:56:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:56:47,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:56:47,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1445 transitions. [2023-08-24 00:56:47,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43005952380952384 [2023-08-24 00:56:47,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1445 transitions. [2023-08-24 00:56:47,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1445 transitions. [2023-08-24 00:56:47,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:47,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1445 transitions. [2023-08-24 00:56:47,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 289.0) internal successors, (1445), 5 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 672.0) internal successors, (4032), 6 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,669 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 535 flow. Second operand 5 states and 1445 transitions. [2023-08-24 00:56:47,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 120 transitions, 1006 flow [2023-08-24 00:56:47,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 120 transitions, 1006 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:56:47,697 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 628 flow [2023-08-24 00:56:47,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=628, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2023-08-24 00:56:47,699 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-08-24 00:56:47,699 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 628 flow [2023-08-24 00:56:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:47,699 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 00:56:47,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:47,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 216509862, now seen corresponding path program 5 times [2023-08-24 00:56:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718465900] [2023-08-24 00:56:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 00:56:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718465900] [2023-08-24 00:56:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718465900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:56:47,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:56:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 00:56:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706866815] [2023-08-24 00:56:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:56:47,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 00:56:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:56:47,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 00:56:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 00:56:47,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 672 [2023-08-24 00:56:47,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 628 flow. Second operand has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:47,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:56:47,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 672 [2023-08-24 00:56:47,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:56:48,419 INFO L124 PetriNetUnfolderBase]: 1978/2850 cut-off events. [2023-08-24 00:56:48,420 INFO L125 PetriNetUnfolderBase]: For 10223/10223 co-relation queries the response was YES. [2023-08-24 00:56:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11625 conditions, 2850 events. 1978/2850 cut-off events. For 10223/10223 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12001 event pairs, 673 based on Foata normal form. 36/2886 useless extension candidates. Maximal degree in co-relation 11515. Up to 1666 conditions per place. [2023-08-24 00:56:48,439 INFO L140 encePairwiseOnDemand]: 666/672 looper letters, 109 selfloop transitions, 15 changer transitions 5/129 dead transitions. [2023-08-24 00:56:48,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 129 transitions, 1118 flow [2023-08-24 00:56:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:56:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:56:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1728 transitions. [2023-08-24 00:56:48,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-24 00:56:48,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1728 transitions. [2023-08-24 00:56:48,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1728 transitions. [2023-08-24 00:56:48,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:56:48,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1728 transitions. [2023-08-24 00:56:48,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.0) internal successors, (1728), 6 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:48,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:48,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 672.0) internal successors, (4704), 7 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:48,453 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 628 flow. Second operand 6 states and 1728 transitions. [2023-08-24 00:56:48,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 129 transitions, 1118 flow [2023-08-24 00:56:48,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 129 transitions, 1100 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:48,491 INFO L231 Difference]: Finished difference. Result has 80 places, 78 transitions, 644 flow [2023-08-24 00:56:48,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=80, PETRI_TRANSITIONS=78} [2023-08-24 00:56:48,492 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-08-24 00:56:48,492 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 78 transitions, 644 flow [2023-08-24 00:56:48,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 280.6) internal successors, (1403), 5 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:56:48,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:48,492 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:48,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 00:56:48,493 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:56:48,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1714454368, now seen corresponding path program 1 times [2023-08-24 00:56:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:48,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733616939] [2023-08-24 00:56:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-24 00:56:51,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:51,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733616939] [2023-08-24 00:56:51,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733616939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:51,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610764853] [2023-08-24 00:56:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:51,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:51,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:51,686 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:56:51,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 00:56:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:51,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 00:56:51,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:56:52,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 00:56:52,217 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 00:56:52,690 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:56:52,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-08-24 00:56:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:56:52,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:56:53,410 WARN L839 $PredicateComparison]: unable to prove that (forall ((~o_4~0.base Int) (v_ArrVal_1075 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1075))) (let ((.cse0 (select .cse2 ~o_2~0.base)) (.cse1 (select (select .cse2 ~o_4~0.base) c_~o_4~0.offset))) (or (< (select .cse0 c_~o_2~0.offset) (+ .cse1 1)) (< |c_thread1Thread1of1ForFork2_#t~mem1#1| (+ (select .cse0 (+ c_~o_2~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) 1)) (< .cse1 (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset)))))) is different from false [2023-08-24 00:56:53,529 INFO L322 Elim1Store]: treesize reduction 19, result has 84.3 percent of original size [2023-08-24 00:56:53,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 188 treesize of output 233 [2023-08-24 00:56:53,582 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:56:53,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 156 [2023-08-24 00:57:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:04,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610764853] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:57:04,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:57:04,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 12] total 51 [2023-08-24 00:57:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596478704] [2023-08-24 00:57:04,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:57:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-08-24 00:57:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:57:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-08-24 00:57:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2445, Unknown=1, NotChecked=100, Total=2756 [2023-08-24 00:57:04,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 672 [2023-08-24 00:57:04,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 78 transitions, 644 flow. Second operand has 53 states, 53 states have (on average 185.67924528301887) internal successors, (9841), 53 states have internal predecessors, (9841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:04,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:57:04,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 672 [2023-08-24 00:57:04,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:57:11,002 INFO L124 PetriNetUnfolderBase]: 4865/7027 cut-off events. [2023-08-24 00:57:11,002 INFO L125 PetriNetUnfolderBase]: For 23424/23424 co-relation queries the response was YES. [2023-08-24 00:57:11,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28152 conditions, 7027 events. 4865/7027 cut-off events. For 23424/23424 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 35755 event pairs, 441 based on Foata normal form. 3/7030 useless extension candidates. Maximal degree in co-relation 27993. Up to 2308 conditions per place. [2023-08-24 00:57:11,054 INFO L140 encePairwiseOnDemand]: 652/672 looper letters, 294 selfloop transitions, 188 changer transitions 17/499 dead transitions. [2023-08-24 00:57:11,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 499 transitions, 4646 flow [2023-08-24 00:57:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-24 00:57:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-24 00:57:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7151 transitions. [2023-08-24 00:57:11,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28760456885456886 [2023-08-24 00:57:11,072 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7151 transitions. [2023-08-24 00:57:11,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7151 transitions. [2023-08-24 00:57:11,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:57:11,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7151 transitions. [2023-08-24 00:57:11,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 193.27027027027026) internal successors, (7151), 37 states have internal predecessors, (7151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:11,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 672.0) internal successors, (25536), 38 states have internal predecessors, (25536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:11,123 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 672.0) internal successors, (25536), 38 states have internal predecessors, (25536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:11,124 INFO L175 Difference]: Start difference. First operand has 80 places, 78 transitions, 644 flow. Second operand 37 states and 7151 transitions. [2023-08-24 00:57:11,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 499 transitions, 4646 flow [2023-08-24 00:57:11,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 499 transitions, 4169 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-24 00:57:11,211 INFO L231 Difference]: Finished difference. Result has 126 places, 256 transitions, 2909 flow [2023-08-24 00:57:11,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2909, PETRI_PLACES=126, PETRI_TRANSITIONS=256} [2023-08-24 00:57:11,213 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places. [2023-08-24 00:57:11,213 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 256 transitions, 2909 flow [2023-08-24 00:57:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 185.67924528301887) internal successors, (9841), 53 states have internal predecessors, (9841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:11,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:57:11,216 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:57:11,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 00:57:11,421 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,SelfDestructingSolverStorable13 [2023-08-24 00:57:11,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:57:11,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:57:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 232692696, now seen corresponding path program 2 times [2023-08-24 00:57:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:57:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524682305] [2023-08-24 00:57:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:57:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:57:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:57:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:57:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524682305] [2023-08-24 00:57:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524682305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:57:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372276071] [2023-08-24 00:57:12,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:57:12,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:57:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:57:12,617 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:57:12,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 00:57:12,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:57:12,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:57:12,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 00:57:12,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:57:13,229 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:57:13,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2023-08-24 00:57:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:13,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:57:13,831 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 00:57:13,831 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 00:57:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372276071] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:57:13,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:57:13,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 32 [2023-08-24 00:57:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510739206] [2023-08-24 00:57:13,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:57:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 00:57:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:57:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 00:57:13,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2023-08-24 00:57:13,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 672 [2023-08-24 00:57:13,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 256 transitions, 2909 flow. Second operand has 33 states, 33 states have (on average 227.24242424242425) internal successors, (7499), 33 states have internal predecessors, (7499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:13,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:57:13,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 672 [2023-08-24 00:57:13,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:57:17,404 INFO L124 PetriNetUnfolderBase]: 8819/12744 cut-off events. [2023-08-24 00:57:17,404 INFO L125 PetriNetUnfolderBase]: For 73970/73970 co-relation queries the response was YES. [2023-08-24 00:57:17,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63580 conditions, 12744 events. 8819/12744 cut-off events. For 73970/73970 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 72179 event pairs, 1271 based on Foata normal form. 1/12745 useless extension candidates. Maximal degree in co-relation 63374. Up to 4754 conditions per place. [2023-08-24 00:57:17,535 INFO L140 encePairwiseOnDemand]: 658/672 looper letters, 381 selfloop transitions, 200 changer transitions 11/592 dead transitions. [2023-08-24 00:57:17,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 592 transitions, 7207 flow [2023-08-24 00:57:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 00:57:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 00:57:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4726 transitions. [2023-08-24 00:57:17,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3516369047619048 [2023-08-24 00:57:17,543 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4726 transitions. [2023-08-24 00:57:17,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4726 transitions. [2023-08-24 00:57:17,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:57:17,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4726 transitions. [2023-08-24 00:57:17,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 236.3) internal successors, (4726), 20 states have internal predecessors, (4726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:17,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 672.0) internal successors, (14112), 21 states have internal predecessors, (14112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:17,562 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 672.0) internal successors, (14112), 21 states have internal predecessors, (14112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:17,562 INFO L175 Difference]: Start difference. First operand has 126 places, 256 transitions, 2909 flow. Second operand 20 states and 4726 transitions. [2023-08-24 00:57:17,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 592 transitions, 7207 flow [2023-08-24 00:57:17,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 592 transitions, 6868 flow, removed 121 selfloop flow, removed 13 redundant places. [2023-08-24 00:57:17,913 INFO L231 Difference]: Finished difference. Result has 138 places, 359 transitions, 4347 flow [2023-08-24 00:57:17,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4347, PETRI_PLACES=138, PETRI_TRANSITIONS=359} [2023-08-24 00:57:17,914 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 104 predicate places. [2023-08-24 00:57:17,914 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 359 transitions, 4347 flow [2023-08-24 00:57:17,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 227.24242424242425) internal successors, (7499), 33 states have internal predecessors, (7499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:17,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:57:17,915 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:57:17,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 00:57:18,121 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,SelfDestructingSolverStorable14 [2023-08-24 00:57:18,122 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:57:18,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:57:18,122 INFO L85 PathProgramCache]: Analyzing trace with hash -680614814, now seen corresponding path program 3 times [2023-08-24 00:57:18,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:57:18,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627876295] [2023-08-24 00:57:18,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:57:18,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:57:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:57:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 00:57:21,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:57:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627876295] [2023-08-24 00:57:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627876295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:57:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564162858] [2023-08-24 00:57:21,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:57:21,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:57:21,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:57:21,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:57:21,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 00:57:21,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 00:57:21,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:57:21,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-24 00:57:21,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:57:22,342 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:57:22,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-08-24 00:57:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:22,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:57:22,922 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 00:57:22,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 00:57:23,071 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:23,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564162858] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:57:23,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:57:23,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 15, 10] total 47 [2023-08-24 00:57:23,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438358988] [2023-08-24 00:57:23,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:57:23,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-24 00:57:23,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:57:23,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-24 00:57:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2014, Unknown=0, NotChecked=0, Total=2256 [2023-08-24 00:57:23,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 672 [2023-08-24 00:57:23,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 359 transitions, 4347 flow. Second operand has 48 states, 48 states have (on average 182.8125) internal successors, (8775), 48 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:23,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:57:23,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 672 [2023-08-24 00:57:23,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:57:33,155 INFO L124 PetriNetUnfolderBase]: 20641/29815 cut-off events. [2023-08-24 00:57:33,155 INFO L125 PetriNetUnfolderBase]: For 214261/214261 co-relation queries the response was YES. [2023-08-24 00:57:33,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159179 conditions, 29815 events. 20641/29815 cut-off events. For 214261/214261 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 189750 event pairs, 4263 based on Foata normal form. 6/29809 useless extension candidates. Maximal degree in co-relation 154994. Up to 9796 conditions per place. [2023-08-24 00:57:33,444 INFO L140 encePairwiseOnDemand]: 652/672 looper letters, 564 selfloop transitions, 662 changer transitions 265/1491 dead transitions. [2023-08-24 00:57:33,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1491 transitions, 20012 flow [2023-08-24 00:57:33,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-24 00:57:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-24 00:57:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 12044 transitions. [2023-08-24 00:57:33,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2800409226190476 [2023-08-24 00:57:33,464 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 12044 transitions. [2023-08-24 00:57:33,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 12044 transitions. [2023-08-24 00:57:33,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:57:33,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 12044 transitions. [2023-08-24 00:57:33,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 188.1875) internal successors, (12044), 64 states have internal predecessors, (12044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:33,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 672.0) internal successors, (43680), 65 states have internal predecessors, (43680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:33,531 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 672.0) internal successors, (43680), 65 states have internal predecessors, (43680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:33,531 INFO L175 Difference]: Start difference. First operand has 138 places, 359 transitions, 4347 flow. Second operand 64 states and 12044 transitions. [2023-08-24 00:57:33,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1491 transitions, 20012 flow [2023-08-24 00:57:35,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1491 transitions, 19809 flow, removed 96 selfloop flow, removed 3 redundant places. [2023-08-24 00:57:35,351 INFO L231 Difference]: Finished difference. Result has 228 places, 833 transitions, 12940 flow [2023-08-24 00:57:35,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=4260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=12940, PETRI_PLACES=228, PETRI_TRANSITIONS=833} [2023-08-24 00:57:35,352 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 194 predicate places. [2023-08-24 00:57:35,352 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 833 transitions, 12940 flow [2023-08-24 00:57:35,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 182.8125) internal successors, (8775), 48 states have internal predecessors, (8775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:35,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:57:35,354 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:57:35,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 00:57:35,560 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,SelfDestructingSolverStorable15 [2023-08-24 00:57:35,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:57:35,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:57:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 265446204, now seen corresponding path program 4 times [2023-08-24 00:57:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:57:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209050320] [2023-08-24 00:57:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:57:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:57:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:57:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-24 00:57:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:57:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209050320] [2023-08-24 00:57:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209050320] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:57:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337519014] [2023-08-24 00:57:38,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 00:57:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:57:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:57:38,360 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:57:38,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 00:57:38,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 00:57:38,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:57:38,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-24 00:57:38,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:57:39,072 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:57:39,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2023-08-24 00:57:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:39,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:57:41,716 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 00:57:41,717 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 00:57:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:57:41,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337519014] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:57:41,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:57:41,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14, 10] total 49 [2023-08-24 00:57:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289869244] [2023-08-24 00:57:41,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:57:41,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-24 00:57:41,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:57:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-24 00:57:41,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2241, Unknown=1, NotChecked=0, Total=2450 [2023-08-24 00:57:41,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 672 [2023-08-24 00:57:41,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 833 transitions, 12940 flow. Second operand has 50 states, 50 states have (on average 185.84) internal successors, (9292), 50 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:57:41,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:57:41,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 672 [2023-08-24 00:57:41,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:57:47,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 00:58:03,867 INFO L124 PetriNetUnfolderBase]: 37335/54020 cut-off events. [2023-08-24 00:58:03,867 INFO L125 PetriNetUnfolderBase]: For 1277405/1277405 co-relation queries the response was YES. [2023-08-24 00:58:04,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434238 conditions, 54020 events. 37335/54020 cut-off events. For 1277405/1277405 co-relation queries the response was YES. Maximal size of possible extension queue 2403. Compared 372538 event pairs, 7216 based on Foata normal form. 8/54027 useless extension candidates. Maximal degree in co-relation 429767. Up to 11169 conditions per place. [2023-08-24 00:58:04,906 INFO L140 encePairwiseOnDemand]: 652/672 looper letters, 943 selfloop transitions, 1203 changer transitions 34/2180 dead transitions. [2023-08-24 00:58:04,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 2180 transitions, 37031 flow [2023-08-24 00:58:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-24 00:58:04,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-24 00:58:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 8358 transitions. [2023-08-24 00:58:04,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28924418604651164 [2023-08-24 00:58:04,919 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 8358 transitions. [2023-08-24 00:58:04,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 8358 transitions. [2023-08-24 00:58:04,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:58:04,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 8358 transitions. [2023-08-24 00:58:04,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 194.37209302325581) internal successors, (8358), 43 states have internal predecessors, (8358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:58:04,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 672.0) internal successors, (29568), 44 states have internal predecessors, (29568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:58:04,952 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 672.0) internal successors, (29568), 44 states have internal predecessors, (29568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:58:04,952 INFO L175 Difference]: Start difference. First operand has 228 places, 833 transitions, 12940 flow. Second operand 43 states and 8358 transitions. [2023-08-24 00:58:04,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 2180 transitions, 37031 flow [2023-08-24 00:58:31,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 2180 transitions, 35592 flow, removed 695 selfloop flow, removed 10 redundant places. [2023-08-24 00:58:31,418 INFO L231 Difference]: Finished difference. Result has 256 places, 1433 transitions, 24957 flow [2023-08-24 00:58:31,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=12369, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=24957, PETRI_PLACES=256, PETRI_TRANSITIONS=1433} [2023-08-24 00:58:31,419 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 222 predicate places. [2023-08-24 00:58:31,419 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1433 transitions, 24957 flow [2023-08-24 00:58:31,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 185.84) internal successors, (9292), 50 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:58:31,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:58:31,420 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:58:31,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 00:58:31,625 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 [2023-08-24 00:58:31,625 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:58:31,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:58:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1171327640, now seen corresponding path program 5 times [2023-08-24 00:58:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:58:31,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464474200] [2023-08-24 00:58:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:58:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:58:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:58:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:58:34,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:58:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464474200] [2023-08-24 00:58:34,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464474200] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:58:34,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340573186] [2023-08-24 00:58:34,529 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 00:58:34,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:58:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:58:34,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:58:34,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 00:58:34,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 00:58:34,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:58:34,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 00:58:34,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:58:35,452 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:58:35,453 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2023-08-24 00:58:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:58:35,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:58:36,146 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 00:58:36,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 00:58:36,242 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:58:36,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340573186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:58:36,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:58:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 15, 10] total 54 [2023-08-24 00:58:36,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500016568] [2023-08-24 00:58:36,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:58:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-08-24 00:58:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:58:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-08-24 00:58:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2709, Unknown=0, NotChecked=0, Total=2970 [2023-08-24 00:58:36,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 672 [2023-08-24 00:58:36,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1433 transitions, 24957 flow. Second operand has 55 states, 55 states have (on average 182.70909090909092) internal successors, (10049), 55 states have internal predecessors, (10049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:58:36,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:58:36,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 672 [2023-08-24 00:58:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:58:38,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 00:59:01,379 INFO L124 PetriNetUnfolderBase]: 42991/62232 cut-off events. [2023-08-24 00:59:01,379 INFO L125 PetriNetUnfolderBase]: For 1725173/1725173 co-relation queries the response was YES. [2023-08-24 00:59:02,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527970 conditions, 62232 events. 42991/62232 cut-off events. For 1725173/1725173 co-relation queries the response was YES. Maximal size of possible extension queue 2980. Compared 440462 event pairs, 7793 based on Foata normal form. 4/62236 useless extension candidates. Maximal degree in co-relation 505617. Up to 13297 conditions per place. [2023-08-24 00:59:02,553 INFO L140 encePairwiseOnDemand]: 653/672 looper letters, 981 selfloop transitions, 1735 changer transitions 48/2764 dead transitions. [2023-08-24 00:59:02,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 2764 transitions, 49504 flow [2023-08-24 00:59:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-24 00:59:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-24 00:59:02,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 11018 transitions. [2023-08-24 00:59:02,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2826867816091954 [2023-08-24 00:59:02,569 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 11018 transitions. [2023-08-24 00:59:02,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 11018 transitions. [2023-08-24 00:59:02,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:59:02,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 11018 transitions. [2023-08-24 00:59:02,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 189.9655172413793) internal successors, (11018), 58 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:59:02,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 672.0) internal successors, (39648), 59 states have internal predecessors, (39648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:59:02,618 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 672.0) internal successors, (39648), 59 states have internal predecessors, (39648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:59:02,618 INFO L175 Difference]: Start difference. First operand has 256 places, 1433 transitions, 24957 flow. Second operand 58 states and 11018 transitions. [2023-08-24 00:59:02,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 2764 transitions, 49504 flow [2023-08-24 00:59:49,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 2764 transitions, 47999 flow, removed 46 selfloop flow, removed 17 redundant places. [2023-08-24 00:59:49,969 INFO L231 Difference]: Finished difference. Result has 316 places, 1967 transitions, 38126 flow [2023-08-24 00:59:49,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=23814, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=38126, PETRI_PLACES=316, PETRI_TRANSITIONS=1967} [2023-08-24 00:59:49,971 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 282 predicate places. [2023-08-24 00:59:49,971 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 1967 transitions, 38126 flow [2023-08-24 00:59:49,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 182.70909090909092) internal successors, (10049), 55 states have internal predecessors, (10049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:59:49,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:59:49,972 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:59:49,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 00:59:50,173 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,SelfDestructingSolverStorable17 [2023-08-24 00:59:50,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:59:50,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:59:50,173 INFO L85 PathProgramCache]: Analyzing trace with hash -514013440, now seen corresponding path program 6 times [2023-08-24 00:59:50,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:59:50,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393047635] [2023-08-24 00:59:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:59:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:59:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:59:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:59:51,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:59:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393047635] [2023-08-24 00:59:51,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393047635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:59:51,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715067202] [2023-08-24 00:59:51,268 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 00:59:51,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:59:51,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:59:51,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:59:51,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 00:59:51,497 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 00:59:51,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:59:51,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 00:59:51,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:59:51,836 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 00:59:51,837 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 75 [2023-08-24 00:59:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:59:51,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:59:52,416 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 00:59:52,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 00:59:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 00:59:52,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715067202] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:59:52,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:59:52,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 31 [2023-08-24 00:59:52,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802021450] [2023-08-24 00:59:52,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:59:52,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-24 00:59:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:59:52,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-24 00:59:52,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-08-24 00:59:52,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 672 [2023-08-24 00:59:52,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 1967 transitions, 38126 flow. Second operand has 32 states, 32 states have (on average 227.28125) internal successors, (7273), 32 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:59:52,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:59:52,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 672 [2023-08-24 00:59:52,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:00:16,394 INFO L124 PetriNetUnfolderBase]: 44039/63788 cut-off events. [2023-08-24 01:00:16,395 INFO L125 PetriNetUnfolderBase]: For 2231016/2231016 co-relation queries the response was YES. [2023-08-24 01:00:17,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597713 conditions, 63788 events. 44039/63788 cut-off events. For 2231016/2231016 co-relation queries the response was YES. Maximal size of possible extension queue 2931. Compared 451933 event pairs, 9117 based on Foata normal form. 8/63796 useless extension candidates. Maximal degree in co-relation 580505. Up to 23598 conditions per place. [2023-08-24 01:00:18,002 INFO L140 encePairwiseOnDemand]: 657/672 looper letters, 608 selfloop transitions, 1601 changer transitions 15/2224 dead transitions. [2023-08-24 01:00:18,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 2224 transitions, 46075 flow [2023-08-24 01:00:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:00:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:00:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4483 transitions. [2023-08-24 01:00:18,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3511121553884712 [2023-08-24 01:00:18,009 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4483 transitions. [2023-08-24 01:00:18,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4483 transitions. [2023-08-24 01:00:18,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:00:18,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4483 transitions. [2023-08-24 01:00:18,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 235.94736842105263) internal successors, (4483), 19 states have internal predecessors, (4483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:00:18,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 672.0) internal successors, (13440), 20 states have internal predecessors, (13440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:00:18,031 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 672.0) internal successors, (13440), 20 states have internal predecessors, (13440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:00:18,031 INFO L175 Difference]: Start difference. First operand has 316 places, 1967 transitions, 38126 flow. Second operand 19 states and 4483 transitions. [2023-08-24 01:00:18,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 2224 transitions, 46075 flow [2023-08-24 01:01:20,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 2224 transitions, 45522 flow, removed 153 selfloop flow, removed 19 redundant places. [2023-08-24 01:01:20,071 INFO L231 Difference]: Finished difference. Result has 318 places, 1980 transitions, 41103 flow [2023-08-24 01:01:20,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=37573, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1588, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=41103, PETRI_PLACES=318, PETRI_TRANSITIONS=1980} [2023-08-24 01:01:20,073 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 284 predicate places. [2023-08-24 01:01:20,073 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 1980 transitions, 41103 flow [2023-08-24 01:01:20,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 227.28125) internal successors, (7273), 32 states have internal predecessors, (7273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:01:20,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:01:20,074 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:01:20,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 01:01:20,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:01:20,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:01:20,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:01:20,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1050841698, now seen corresponding path program 7 times [2023-08-24 01:01:20,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:01:20,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924550409] [2023-08-24 01:01:20,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:01:20,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:01:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:01:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:01:21,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:01:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924550409] [2023-08-24 01:01:21,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924550409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:01:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590409754] [2023-08-24 01:01:21,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:01:21,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:01:21,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:01:21,350 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) [2023-08-24 01:01:21,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 01:01:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:01:21,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-24 01:01:21,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:01:21,796 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:01:21,796 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-08-24 01:01:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:01:21,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:01:22,261 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 01:01:22,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 01:01:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:01:22,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590409754] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:01:22,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:01:22,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 28 [2023-08-24 01:01:22,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20391334] [2023-08-24 01:01:22,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:01:22,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 01:01:22,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:01:22,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 01:01:22,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-08-24 01:01:22,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 672 [2023-08-24 01:01:22,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 1980 transitions, 41103 flow. Second operand has 29 states, 29 states have (on average 227.24137931034483) internal successors, (6590), 29 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:01:22,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:01:22,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 672 [2023-08-24 01:01:22,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:01:48,683 INFO L124 PetriNetUnfolderBase]: 48423/70136 cut-off events. [2023-08-24 01:01:48,684 INFO L125 PetriNetUnfolderBase]: For 2807694/2807694 co-relation queries the response was YES. [2023-08-24 01:01:50,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690225 conditions, 70136 events. 48423/70136 cut-off events. For 2807694/2807694 co-relation queries the response was YES. Maximal size of possible extension queue 3302. Compared 503026 event pairs, 9102 based on Foata normal form. 4/70140 useless extension candidates. Maximal degree in co-relation 670526. Up to 22302 conditions per place. [2023-08-24 01:01:50,449 INFO L140 encePairwiseOnDemand]: 658/672 looper letters, 571 selfloop transitions, 1743 changer transitions 16/2330 dead transitions. [2023-08-24 01:01:50,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 2330 transitions, 51249 flow [2023-08-24 01:01:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 01:01:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 01:01:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5186 transitions. [2023-08-24 01:01:50,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35078463203463206 [2023-08-24 01:01:50,453 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5186 transitions. [2023-08-24 01:01:50,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5186 transitions. [2023-08-24 01:01:50,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:01:50,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5186 transitions. [2023-08-24 01:01:50,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 235.72727272727272) internal successors, (5186), 22 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:01:50,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 672.0) internal successors, (15456), 23 states have internal predecessors, (15456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:01:50,469 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 672.0) internal successors, (15456), 23 states have internal predecessors, (15456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:01:50,470 INFO L175 Difference]: Start difference. First operand has 318 places, 1980 transitions, 41103 flow. Second operand 22 states and 5186 transitions. [2023-08-24 01:01:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 2330 transitions, 51249 flow [2023-08-24 01:02:58,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 2330 transitions, 48317 flow, removed 64 selfloop flow, removed 14 redundant places. [2023-08-24 01:02:58,496 INFO L231 Difference]: Finished difference. Result has 332 places, 2068 transitions, 44210 flow [2023-08-24 01:02:58,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=38263, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=44210, PETRI_PLACES=332, PETRI_TRANSITIONS=2068} [2023-08-24 01:02:58,498 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 298 predicate places. [2023-08-24 01:02:58,498 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 2068 transitions, 44210 flow [2023-08-24 01:02:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 227.24137931034483) internal successors, (6590), 29 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:58,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:58,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:02:58,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 01:02:58,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:02:58,706 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:58,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:58,707 INFO L85 PathProgramCache]: Analyzing trace with hash -477788436, now seen corresponding path program 8 times [2023-08-24 01:02:58,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:58,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738498846] [2023-08-24 01:02:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:02:59,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738498846] [2023-08-24 01:02:59,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738498846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:02:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543327280] [2023-08-24 01:02:59,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:02:59,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:02:59,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:02:59,677 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) [2023-08-24 01:02:59,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 01:02:59,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:02:59,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:02:59,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 01:02:59,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:03:00,124 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:03:00,125 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-08-24 01:03:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:03:00,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:03:00,726 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 01:03:00,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 01:03:00,850 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:03:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543327280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:03:00,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:03:00,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 30 [2023-08-24 01:03:00,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655769301] [2023-08-24 01:03:00,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:03:00,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-24 01:03:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:03:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-24 01:03:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2023-08-24 01:03:00,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 672 [2023-08-24 01:03:00,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 2068 transitions, 44210 flow. Second operand has 31 states, 31 states have (on average 227.3548387096774) internal successors, (7048), 31 states have internal predecessors, (7048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:00,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:03:00,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 672 [2023-08-24 01:03:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:03:29,280 INFO L124 PetriNetUnfolderBase]: 48895/70820 cut-off events. [2023-08-24 01:03:29,280 INFO L125 PetriNetUnfolderBase]: For 3129605/3129605 co-relation queries the response was YES. [2023-08-24 01:03:31,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718716 conditions, 70820 events. 48895/70820 cut-off events. For 3129605/3129605 co-relation queries the response was YES. Maximal size of possible extension queue 3328. Compared 508418 event pairs, 9874 based on Foata normal form. 4/70824 useless extension candidates. Maximal degree in co-relation 699205. Up to 23810 conditions per place. [2023-08-24 01:03:31,338 INFO L140 encePairwiseOnDemand]: 658/672 looper letters, 585 selfloop transitions, 1741 changer transitions 22/2348 dead transitions. [2023-08-24 01:03:31,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2348 transitions, 52756 flow [2023-08-24 01:03:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 01:03:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 01:03:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5185 transitions. [2023-08-24 01:03:31,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35071699134199136 [2023-08-24 01:03:31,343 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5185 transitions. [2023-08-24 01:03:31,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5185 transitions. [2023-08-24 01:03:31,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:03:31,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5185 transitions. [2023-08-24 01:03:31,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 235.6818181818182) internal successors, (5185), 22 states have internal predecessors, (5185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:31,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 672.0) internal successors, (15456), 23 states have internal predecessors, (15456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:31,359 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 672.0) internal successors, (15456), 23 states have internal predecessors, (15456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:31,359 INFO L175 Difference]: Start difference. First operand has 332 places, 2068 transitions, 44210 flow. Second operand 22 states and 5185 transitions. [2023-08-24 01:03:31,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2348 transitions, 52756 flow [2023-08-24 01:05:00,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 2348 transitions, 50864 flow, removed 250 selfloop flow, removed 9 redundant places. [2023-08-24 01:05:01,029 INFO L231 Difference]: Finished difference. Result has 346 places, 2073 transitions, 45977 flow [2023-08-24 01:05:01,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=42344, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1736, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=45977, PETRI_PLACES=346, PETRI_TRANSITIONS=2073} [2023-08-24 01:05:01,031 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 312 predicate places. [2023-08-24 01:05:01,031 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 2073 transitions, 45977 flow [2023-08-24 01:05:01,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 227.3548387096774) internal successors, (7048), 31 states have internal predecessors, (7048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:05:01,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:05:01,032 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:05:01,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-24 01:05:01,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:05:01,240 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:05:01,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:05:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash 833865068, now seen corresponding path program 9 times [2023-08-24 01:05:01,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:05:01,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125067172] [2023-08-24 01:05:01,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:05:01,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:05:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:05:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:05:02,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:05:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125067172] [2023-08-24 01:05:02,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125067172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:05:02,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227699212] [2023-08-24 01:05:02,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:05:02,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:05:02,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:05:02,228 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) [2023-08-24 01:05:02,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 01:05:02,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 01:05:02,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:05:02,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-24 01:05:02,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:05:02,751 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:05:02,751 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 40 [2023-08-24 01:05:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:05:02,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:05:03,246 INFO L322 Elim1Store]: treesize reduction 8, result has 96.1 percent of original size [2023-08-24 01:05:03,246 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 212 [2023-08-24 01:05:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:05:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227699212] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:05:12,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:05:12,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 10] total 30 [2023-08-24 01:05:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774260742] [2023-08-24 01:05:12,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:05:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-24 01:05:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:05:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-24 01:05:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2023-08-24 01:05:12,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 672 [2023-08-24 01:05:12,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 2073 transitions, 45977 flow. Second operand has 31 states, 31 states have (on average 227.16129032258064) internal successors, (7042), 31 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:05:12,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:05:12,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 672 [2023-08-24 01:05:12,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:05:51,084 INFO L124 PetriNetUnfolderBase]: 64411/92992 cut-off events. [2023-08-24 01:05:51,084 INFO L125 PetriNetUnfolderBase]: For 4537960/4537960 co-relation queries the response was YES. [2023-08-24 01:05:53,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980896 conditions, 92992 events. 64411/92992 cut-off events. For 4537960/4537960 co-relation queries the response was YES. Maximal size of possible extension queue 4481. Compared 685453 event pairs, 9856 based on Foata normal form. 4/92996 useless extension candidates. Maximal degree in co-relation 966815. Up to 46946 conditions per place. [2023-08-24 01:05:53,805 INFO L140 encePairwiseOnDemand]: 660/672 looper letters, 694 selfloop transitions, 1907 changer transitions 195/2796 dead transitions. [2023-08-24 01:05:53,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 2796 transitions, 64776 flow [2023-08-24 01:05:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-24 01:05:53,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-24 01:05:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 6583 transitions. [2023-08-24 01:05:53,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34986181972789115 [2023-08-24 01:05:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 6583 transitions. [2023-08-24 01:05:53,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 6583 transitions. [2023-08-24 01:05:53,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:05:53,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 6583 transitions. [2023-08-24 01:05:53,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 235.10714285714286) internal successors, (6583), 28 states have internal predecessors, (6583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:05:53,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 672.0) internal successors, (19488), 29 states have internal predecessors, (19488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:05:53,830 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 672.0) internal successors, (19488), 29 states have internal predecessors, (19488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:05:53,830 INFO L175 Difference]: Start difference. First operand has 346 places, 2073 transitions, 45977 flow. Second operand 28 states and 6583 transitions. [2023-08-24 01:05:53,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 2796 transitions, 64776 flow [2023-08-24 01:08:24,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 2796 transitions, 61131 flow, removed 36 selfloop flow, removed 18 redundant places. [2023-08-24 01:08:24,198 INFO L231 Difference]: Finished difference. Result has 373 places, 2370 transitions, 55708 flow [2023-08-24 01:08:24,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=672, PETRI_DIFFERENCE_MINUEND_FLOW=42918, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1643, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=55708, PETRI_PLACES=373, PETRI_TRANSITIONS=2370} [2023-08-24 01:08:24,199 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 339 predicate places. [2023-08-24 01:08:24,199 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 2370 transitions, 55708 flow [2023-08-24 01:08:24,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 227.16129032258064) internal successors, (7042), 31 states have internal predecessors, (7042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:08:24,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:08:24,200 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:08:24,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 01:08:24,401 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,SelfDestructingSolverStorable21 [2023-08-24 01:08:24,401 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:08:24,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:08:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1653402880, now seen corresponding path program 10 times [2023-08-24 01:08:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:08:24,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284911791] [2023-08-24 01:08:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:08:24,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:08:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:08:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-24 01:08:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:08:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284911791] [2023-08-24 01:08:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284911791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:08:26,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177345231] [2023-08-24 01:08:26,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:08:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:08:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:08:26,595 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) [2023-08-24 01:08:26,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 01:08:26,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:08:26,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:08:26,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-24 01:08:26,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:08:27,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:08:27,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 48 [2023-08-24 01:08:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:08:27,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:08:31,968 INFO L322 Elim1Store]: treesize reduction 32, result has 73.6 percent of original size [2023-08-24 01:08:31,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 102 [2023-08-24 01:08:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 01:08:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177345231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:08:32,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:08:32,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14, 10] total 49 [2023-08-24 01:08:32,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504703940] [2023-08-24 01:08:32,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:08:32,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-08-24 01:08:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:08:32,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-08-24 01:08:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2227, Unknown=0, NotChecked=0, Total=2450 [2023-08-24 01:08:32,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 672 [2023-08-24 01:08:32,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 2370 transitions, 55708 flow. Second operand has 50 states, 50 states have (on average 185.86) internal successors, (9293), 50 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:08:32,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:08:32,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 672 [2023-08-24 01:08:32,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:08:44,770 WARN L234 SmtUtils]: Spent 12.57s on a formula simplification. DAG size of input: 92 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 01:09:25,295 INFO L124 PetriNetUnfolderBase]: 57843/83748 cut-off events. [2023-08-24 01:09:25,295 INFO L125 PetriNetUnfolderBase]: For 5874195/5874195 co-relation queries the response was YES. [2023-08-24 01:09:27,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994110 conditions, 83748 events. 57843/83748 cut-off events. For 5874195/5874195 co-relation queries the response was YES. Maximal size of possible extension queue 4018. Compared 614247 event pairs, 9934 based on Foata normal form. 4/83752 useless extension candidates. Maximal degree in co-relation 985363. Up to 32408 conditions per place. [2023-08-24 01:09:28,253 INFO L140 encePairwiseOnDemand]: 653/672 looper letters, 659 selfloop transitions, 1995 changer transitions 156/2810 dead transitions. [2023-08-24 01:09:28,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 2810 transitions, 69902 flow [2023-08-24 01:09:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 01:09:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 01:09:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 6530 transitions. [2023-08-24 01:09:28,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2858018207282913 [2023-08-24 01:09:28,259 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 6530 transitions. [2023-08-24 01:09:28,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 6530 transitions. [2023-08-24 01:09:28,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:09:28,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 6530 transitions. [2023-08-24 01:09:28,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 192.05882352941177) internal successors, (6530), 34 states have internal predecessors, (6530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:09:28,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 672.0) internal successors, (23520), 35 states have internal predecessors, (23520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:09:28,275 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 672.0) internal successors, (23520), 35 states have internal predecessors, (23520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:09:28,275 INFO L175 Difference]: Start difference. First operand has 373 places, 2370 transitions, 55708 flow. Second operand 34 states and 6530 transitions. [2023-08-24 01:09:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 2810 transitions, 69902 flow Received shutdown request... [2023-08-24 01:09:33,214 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 [2023-08-24 01:09:33,214 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:09:33,734 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:09:33,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 01:09:33,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:09:33,940 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 01:09:33,941 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:09:33,941 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:09:33,941 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:09:33,942 INFO L445 BasicCegarLoop]: Path program histogram: [10, 5, 5, 2, 1] [2023-08-24 01:09:33,945 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:09:33,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:09:33,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:09:33 BasicIcfg [2023-08-24 01:09:33,947 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:09:33,948 INFO L158 Benchmark]: Toolchain (without parser) took 787308.97ms. Allocated memory was 392.2MB in the beginning and 15.3GB in the end (delta: 14.9GB). Free memory was 347.0MB in the beginning and 11.0GB in the end (delta: -10.7GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-24 01:09:33,948 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 368.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:09:33,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.25ms. Allocated memory is still 392.2MB. Free memory was 346.8MB in the beginning and 334.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 01:09:33,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.60ms. Allocated memory is still 392.2MB. Free memory was 334.7MB in the beginning and 369.6MB in the end (delta: -34.9MB). Peak memory consumption was 6.0MB. Max. memory is 16.0GB. [2023-08-24 01:09:33,949 INFO L158 Benchmark]: Boogie Preprocessor took 52.08ms. Allocated memory is still 392.2MB. Free memory was 369.6MB in the beginning and 367.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:09:33,951 INFO L158 Benchmark]: RCFGBuilder took 641.90ms. Allocated memory is still 392.2MB. Free memory was 367.5MB in the beginning and 342.8MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 01:09:33,953 INFO L158 Benchmark]: TraceAbstraction took 786207.12ms. Allocated memory was 392.2MB in the beginning and 15.3GB in the end (delta: 14.9GB). Free memory was 341.8MB in the beginning and 11.0GB in the end (delta: -10.7GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. [2023-08-24 01:09:33,960 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 392.2MB. Free memory is still 368.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 321.25ms. Allocated memory is still 392.2MB. Free memory was 346.8MB in the beginning and 334.9MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 78.60ms. Allocated memory is still 392.2MB. Free memory was 334.7MB in the beginning and 369.6MB in the end (delta: -34.9MB). Peak memory consumption was 6.0MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.08ms. Allocated memory is still 392.2MB. Free memory was 369.6MB in the beginning and 367.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 641.90ms. Allocated memory is still 392.2MB. Free memory was 367.5MB in the beginning and 342.8MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 786207.12ms. Allocated memory was 392.2MB in the beginning and 15.3GB in the end (delta: 14.9GB). Free memory was 341.8MB in the beginning and 11.0GB in the end (delta: -10.7GB). Peak memory consumption was 6.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 290 PlacesBefore, 34 PlacesAfterwards, 308 TransitionsBefore, 31 TransitionsAfterwards, 15390 CoEnabledTransitionPairs, 7 FixpointIterations, 135 TrivialSequentialCompositions, 124 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 40 ConcurrentYvCompositions, 21 ChoiceCompositions, 351 TotalNumberOfCompositions, 14265 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13677, independent: 13630, independent conditional: 0, independent unconditional: 13630, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8854, independent: 8836, independent conditional: 0, independent unconditional: 8836, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13677, independent: 4794, independent conditional: 0, independent unconditional: 4794, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 8854, unknown conditional: 0, unknown unconditional: 8854] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 103]: 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: 102]: 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: 101]: 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, 420 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: 786.0s, OverallIterations: 23, TraceHistogramMax: 5, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 707.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 6624 SdHoareTripleChecker+Valid, 24.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6624 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 21.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 338 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1017 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29896 IncrementalHoareTripleChecker+Invalid, 31253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1017 mSolverCounterUnsat, 0 mSDtfsCounter, 29896 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1884 GetRequests, 1057 SyntacticMatches, 24 SemanticMatches, 803 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14563 ImplicationChecksByTransitivity, 52.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55708occurred in iteration=22, InterpolantAutomatonStates: 377, 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: 0.5s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 60.3s InterpolantComputationTime, 1547 NumberOfCodeBlocks, 1480 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 2052 ConstructedInterpolants, 94 QuantifiedInterpolants, 17793 SizeOfPredicates, 385 NumberOfNonLiveVariables, 7404 ConjunctsInSsa, 579 ConjunctsInUnsatCore, 54 InterpolantComputations, 11 PerfectInterpolantSequences, 1950/2265 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