/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:32:21,140 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:32:21,188 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 07:32:21,192 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:32:21,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:32:21,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:32:21,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:32:21,213 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:32:21,214 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:32:21,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:32:21,214 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:32:21,215 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:32:21,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:32:21,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:32:21,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:32:21,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:32:21,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:32:21,217 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:32:21,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:32:21,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:32:21,218 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:32:21,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:32:21,221 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:32:21,222 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:32:21,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:32:21,222 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:32:21,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:32:21,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:32:21,224 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:32:21,224 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:32:21,224 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:32:21,225 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:32:21,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:32:21,225 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:32:21,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:32:21,226 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:32:21,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:32:21,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:32:21,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:32:21,571 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:32:21,571 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:32:21,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2023-08-24 07:32:22,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:32:22,937 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:32:22,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2023-08-24 07:32:22,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73cf59731/68e8ef4eccc946e5b81c04ac7e587229/FLAG84defa802 [2023-08-24 07:32:22,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73cf59731/68e8ef4eccc946e5b81c04ac7e587229 [2023-08-24 07:32:22,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:32:22,962 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:32:22,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:32:22,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:32:22,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:32:22,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:32:22" (1/1) ... [2023-08-24 07:32:22,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e88eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:22, skipping insertion in model container [2023-08-24 07:32:22,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:32:22" (1/1) ... [2023-08-24 07:32:22,987 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:32:23,174 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-collitem-trans.wvr.c[3481,3494] [2023-08-24 07:32:23,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:32:23,198 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:32:23,232 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-collitem-trans.wvr.c[3481,3494] [2023-08-24 07:32:23,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:32:23,243 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 07:32:23,243 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 07:32:23,249 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:32:23,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23 WrapperNode [2023-08-24 07:32:23,251 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:32:23,252 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:32:23,252 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:32:23,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:32:23,258 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,318 INFO L138 Inliner]: procedures = 23, calls = 45, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 361 [2023-08-24 07:32:23,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:32:23,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:32:23,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:32:23,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:32:23,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,357 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:32:23,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:32:23,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:32:23,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:32:23,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (1/1) ... [2023-08-24 07:32:23,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:32:23,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:32:23,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 07:32:23,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 07:32:23,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:32:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:32:23,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:32:23,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:32:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 07:32:23,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 07:32:23,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:32:23,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:32:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:32:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:32:23,439 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:32:23,549 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:32:23,551 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:32:24,007 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:32:24,502 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:32:24,502 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 07:32:24,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:32:24 BoogieIcfgContainer [2023-08-24 07:32:24,504 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:32:24,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:32:24,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:32:24,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:32:24,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:32:22" (1/3) ... [2023-08-24 07:32:24,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b044cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:32:24, skipping insertion in model container [2023-08-24 07:32:24,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:32:23" (2/3) ... [2023-08-24 07:32:24,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b044cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:32:24, skipping insertion in model container [2023-08-24 07:32:24,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:32:24" (3/3) ... [2023-08-24 07:32:24,514 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2023-08-24 07:32:24,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:32:24,531 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:32:24,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:32:24,669 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 07:32:24,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 132 transitions, 288 flow [2023-08-24 07:32:24,761 INFO L124 PetriNetUnfolderBase]: 1/129 cut-off events. [2023-08-24 07:32:24,762 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:32:24,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 1/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-24 07:32:24,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 132 transitions, 288 flow [2023-08-24 07:32:24,769 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 119 transitions, 256 flow [2023-08-24 07:32:24,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:32:24,780 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 119 transitions, 256 flow [2023-08-24 07:32:24,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 119 transitions, 256 flow [2023-08-24 07:32:24,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 119 transitions, 256 flow [2023-08-24 07:32:24,816 INFO L124 PetriNetUnfolderBase]: 1/119 cut-off events. [2023-08-24 07:32:24,816 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:32:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 119 events. 1/119 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-08-24 07:32:24,817 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-08-24 07:32:33,903 INFO L134 LiptonReduction]: Checked pairs total: 460 [2023-08-24 07:32:33,903 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-24 07:32:33,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:32:33,920 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;@51c161c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:32:33,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 07:32:33,928 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:32:33,928 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 07:32:33,928 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:32:33,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:33,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:33,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:33,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:33,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1335539198, now seen corresponding path program 1 times [2023-08-24 07:32:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952005747] [2023-08-24 07:32:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:37,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952005747] [2023-08-24 07:32:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952005747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510757076] [2023-08-24 07:32:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:37,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:37,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:37,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:37,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:37,801 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-08-24 07:32:37,802 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 07:32:37,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-24 07:32:37,805 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-24 07:32:37,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-24 07:32:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:32:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:32:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 604 transitions. [2023-08-24 07:32:37,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42296918767507 [2023-08-24 07:32:37,826 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 604 transitions. [2023-08-24 07:32:37,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 604 transitions. [2023-08-24 07:32:37,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:37,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 604 transitions. [2023-08-24 07:32:37,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.66666666666667) internal successors, (604), 6 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:37,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:37,844 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:37,846 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 604 transitions. [2023-08-24 07:32:37,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-24 07:32:37,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 07:32:37,850 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-24 07:32:37,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-24 07:32:37,855 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 07:32:37,856 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-24 07:32:37,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:37,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:37,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:32:37,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:37,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1392752308, now seen corresponding path program 2 times [2023-08-24 07:32:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:37,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104772746] [2023-08-24 07:32:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:39,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104772746] [2023-08-24 07:32:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104772746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:39,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:39,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:39,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455516842] [2023-08-24 07:32:39,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:39,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:39,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:39,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:39,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:39,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:39,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:39,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:40,103 INFO L124 PetriNetUnfolderBase]: 39/119 cut-off events. [2023-08-24 07:32:40,103 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-24 07:32:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 119 events. 39/119 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 425 event pairs, 9 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 317. Up to 60 conditions per place. [2023-08-24 07:32:40,105 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 28 selfloop transitions, 9 changer transitions 5/42 dead transitions. [2023-08-24 07:32:40,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 219 flow [2023-08-24 07:32:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:32:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:32:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 505 transitions. [2023-08-24 07:32:40,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2023-08-24 07:32:40,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 505 transitions. [2023-08-24 07:32:40,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 505 transitions. [2023-08-24 07:32:40,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:40,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 505 transitions. [2023-08-24 07:32:40,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:40,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:40,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 238.0) internal successors, (1428), 6 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:40,111 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 5 states and 505 transitions. [2023-08-24 07:32:40,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 219 flow [2023-08-24 07:32:40,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 42 transitions, 215 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 07:32:40,114 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 118 flow [2023-08-24 07:32:40,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-24 07:32:40,114 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-08-24 07:32:40,115 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 118 flow [2023-08-24 07:32:40,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:40,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:40,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:40,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 07:32:40,116 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:40,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:40,116 INFO L85 PathProgramCache]: Analyzing trace with hash -159030358, now seen corresponding path program 3 times [2023-08-24 07:32:40,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:40,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759452026] [2023-08-24 07:32:40,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:42,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:42,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:42,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759452026] [2023-08-24 07:32:42,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759452026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:42,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:42,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:42,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263031993] [2023-08-24 07:32:42,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:42,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:42,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:42,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:42,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:42,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:42,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:42,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:42,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:42,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:42,709 INFO L124 PetriNetUnfolderBase]: 39/118 cut-off events. [2023-08-24 07:32:42,709 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2023-08-24 07:32:42,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 118 events. 39/118 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 432 event pairs, 2 based on Foata normal form. 1/119 useless extension candidates. Maximal degree in co-relation 220. Up to 53 conditions per place. [2023-08-24 07:32:42,711 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 27 selfloop transitions, 7 changer transitions 12/46 dead transitions. [2023-08-24 07:32:42,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 280 flow [2023-08-24 07:32:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:32:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:32:42,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 602 transitions. [2023-08-24 07:32:42,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2023-08-24 07:32:42,713 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 602 transitions. [2023-08-24 07:32:42,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 602 transitions. [2023-08-24 07:32:42,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:42,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 602 transitions. [2023-08-24 07:32:42,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:42,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:42,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:42,718 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 118 flow. Second operand 6 states and 602 transitions. [2023-08-24 07:32:42,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 280 flow [2023-08-24 07:32:42,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 273 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 07:32:42,721 INFO L231 Difference]: Finished difference. Result has 38 places, 21 transitions, 120 flow [2023-08-24 07:32:42,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=38, PETRI_TRANSITIONS=21} [2023-08-24 07:32:42,722 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-24 07:32:42,722 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 21 transitions, 120 flow [2023-08-24 07:32:42,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:42,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:42,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:42,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 07:32:42,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:42,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash 994545194, now seen corresponding path program 4 times [2023-08-24 07:32:42,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:42,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538935315] [2023-08-24 07:32:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:42,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:44,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:44,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538935315] [2023-08-24 07:32:44,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538935315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:44,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:44,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:44,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718538913] [2023-08-24 07:32:44,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:44,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:44,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:44,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:44,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:44,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:44,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:44,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:45,047 INFO L124 PetriNetUnfolderBase]: 18/62 cut-off events. [2023-08-24 07:32:45,047 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-24 07:32:45,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 62 events. 18/62 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 234. Up to 22 conditions per place. [2023-08-24 07:32:45,050 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 18 selfloop transitions, 6 changer transitions 13/37 dead transitions. [2023-08-24 07:32:45,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 241 flow [2023-08-24 07:32:45,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:32:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:32:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-08-24 07:32:45,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2023-08-24 07:32:45,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-08-24 07:32:45,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-08-24 07:32:45,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:45,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-08-24 07:32:45,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:45,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:45,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:45,058 INFO L175 Difference]: Start difference. First operand has 38 places, 21 transitions, 120 flow. Second operand 6 states and 594 transitions. [2023-08-24 07:32:45,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 241 flow [2023-08-24 07:32:45,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 211 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-24 07:32:45,062 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 93 flow [2023-08-24 07:32:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-08-24 07:32:45,063 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-24 07:32:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 93 flow [2023-08-24 07:32:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 07:32:45,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:45,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 196870180, now seen corresponding path program 5 times [2023-08-24 07:32:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249401285] [2023-08-24 07:32:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:47,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:47,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249401285] [2023-08-24 07:32:47,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249401285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:47,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:47,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984077394] [2023-08-24 07:32:47,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:47,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:47,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:47,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:47,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:47,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:47,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:47,586 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-08-24 07:32:47,586 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-24 07:32:47,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 40 events. 8/40 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 58 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 139. Up to 19 conditions per place. [2023-08-24 07:32:47,586 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-24 07:32:47,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 179 flow [2023-08-24 07:32:47,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:32:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:32:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 589 transitions. [2023-08-24 07:32:47,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41246498599439774 [2023-08-24 07:32:47,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 589 transitions. [2023-08-24 07:32:47,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 589 transitions. [2023-08-24 07:32:47,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:47,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 589 transitions. [2023-08-24 07:32:47,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.16666666666667) internal successors, (589), 6 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:47,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:47,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:47,593 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 93 flow. Second operand 6 states and 589 transitions. [2023-08-24 07:32:47,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 179 flow [2023-08-24 07:32:47,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 153 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-24 07:32:47,595 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 58 flow [2023-08-24 07:32:47,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2023-08-24 07:32:47,596 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-24 07:32:47,596 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 58 flow [2023-08-24 07:32:47,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:47,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:32:47,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:32:47,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 07:32:47,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:32:47,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:32:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1119287124, now seen corresponding path program 6 times [2023-08-24 07:32:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:32:47,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016105008] [2023-08-24 07:32:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:32:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:32:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:32:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:32:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:32:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016105008] [2023-08-24 07:32:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016105008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:32:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:32:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:32:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758438100] [2023-08-24 07:32:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:32:49,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:32:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:32:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:32:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:32:49,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 238 [2023-08-24 07:32:49,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 16 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:49,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:32:49,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 238 [2023-08-24 07:32:49,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:32:49,634 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 07:32:49,634 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 07:32:49,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 63. Up to 8 conditions per place. [2023-08-24 07:32:49,635 INFO L140 encePairwiseOnDemand]: 233/238 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-24 07:32:49,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 18 transitions, 96 flow [2023-08-24 07:32:49,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:32:49,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:32:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 577 transitions. [2023-08-24 07:32:49,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40406162464985995 [2023-08-24 07:32:49,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 577 transitions. [2023-08-24 07:32:49,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 577 transitions. [2023-08-24 07:32:49,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:32:49,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 577 transitions. [2023-08-24 07:32:49,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:49,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:49,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:49,641 INFO L175 Difference]: Start difference. First operand has 34 places, 16 transitions, 58 flow. Second operand 6 states and 577 transitions. [2023-08-24 07:32:49,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 18 transitions, 96 flow [2023-08-24 07:32:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-24 07:32:49,642 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-24 07:32:49,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-24 07:32:49,643 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-24 07:32:49,643 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-24 07:32:49,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:32:49,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 07:32:49,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 07:32:49,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 07:32:49,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 07:32:49,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 07:32:49,651 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-24 07:32:49,654 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 07:32:49,654 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 07:32:49,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 07:32:49 BasicIcfg [2023-08-24 07:32:49,658 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 07:32:49,660 INFO L158 Benchmark]: Toolchain (without parser) took 26696.54ms. Allocated memory was 350.2MB in the beginning and 962.6MB in the end (delta: 612.4MB). Free memory was 325.3MB in the beginning and 390.5MB in the end (delta: -65.3MB). Peak memory consumption was 549.8MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,660 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory is still 327.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 07:32:49,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.29ms. Allocated memory is still 350.2MB. Free memory was 325.3MB in the beginning and 313.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,663 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.45ms. Allocated memory is still 350.2MB. Free memory was 313.3MB in the beginning and 310.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,663 INFO L158 Benchmark]: Boogie Preprocessor took 42.83ms. Allocated memory is still 350.2MB. Free memory was 310.3MB in the beginning and 308.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,663 INFO L158 Benchmark]: RCFGBuilder took 1142.34ms. Allocated memory is still 350.2MB. Free memory was 308.2MB in the beginning and 216.0MB in the end (delta: 92.2MB). Peak memory consumption was 94.2MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,663 INFO L158 Benchmark]: TraceAbstraction took 25150.28ms. Allocated memory was 350.2MB in the beginning and 962.6MB in the end (delta: 612.4MB). Free memory was 216.0MB in the beginning and 390.5MB in the end (delta: -174.5MB). Peak memory consumption was 438.9MB. Max. memory is 16.0GB. [2023-08-24 07:32:49,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory is still 327.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 288.29ms. Allocated memory is still 350.2MB. Free memory was 325.3MB in the beginning and 313.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.45ms. Allocated memory is still 350.2MB. Free memory was 313.3MB in the beginning and 310.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.83ms. Allocated memory is still 350.2MB. Free memory was 310.3MB in the beginning and 308.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1142.34ms. Allocated memory is still 350.2MB. Free memory was 308.2MB in the beginning and 216.0MB in the end (delta: 92.2MB). Peak memory consumption was 94.2MB. Max. memory is 16.0GB. * TraceAbstraction took 25150.28ms. Allocated memory was 350.2MB in the beginning and 962.6MB in the end (delta: 612.4MB). Free memory was 216.0MB in the beginning and 390.5MB in the end (delta: -174.5MB). Peak memory consumption was 438.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.1s, 128 PlacesBefore, 26 PlacesAfterwards, 119 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 84 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 106 TotalNumberOfCompositions, 460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 460, independent: 460, independent conditional: 0, independent unconditional: 460, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 167, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 460, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 167, unknown conditional: 0, unknown unconditional: 167] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 147 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: 25.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 185 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 408 IncrementalHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 408 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=3, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 2358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 07:32:49,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...