/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/pthread-wmm/safe035_power.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:37:45,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:37:45,442 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 05:37:45,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:37:45,448 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:37:45,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:37:45,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:37:45,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:37:45,479 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:37:45,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:37:45,483 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:37:45,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:37:45,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:37:45,484 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:37:45,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:37:45,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:37:45,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:37:45,485 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:37:45,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:37:45,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:37:45,485 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:37:45,486 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:37:45,486 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:37:45,487 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:37:45,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:37:45,487 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:37:45,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:37:45,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:45,488 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:37:45,488 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:37:45,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:37:45,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:37:45,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:37:45,489 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:37:45,489 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:37:45,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:37:45,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:37:45,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:37:45,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:37:45,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:37:45,807 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:37:45,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-24 05:37:47,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:37:47,247 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:37:47,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2023-08-24 05:37:47,264 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8265874b/d501711dd954429fa408b99369c15c13/FLAG3858ef078 [2023-08-24 05:37:47,277 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8265874b/d501711dd954429fa408b99369c15c13 [2023-08-24 05:37:47,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:37:47,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:37:47,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:47,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:37:47,284 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:37:47,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed6b0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47, skipping insertion in model container [2023-08-24 05:37:47,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,327 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:37:47,468 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-08-24 05:37:47,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:47,750 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:37:47,761 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i[947,960] [2023-08-24 05:37:47,781 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:47,782 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:37:47,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:37:47,876 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:47,876 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:37:47,883 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:37:47,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47 WrapperNode [2023-08-24 05:37:47,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:37:47,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:47,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:37:47,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:37:47,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,961 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 173 [2023-08-24 05:37:47,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:37:47,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:37:47,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:37:47,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:37:47,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:47,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,009 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:37:48,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:37:48,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:37:48,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:37:48,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (1/1) ... [2023-08-24 05:37:48,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:37:48,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:37:48,061 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 05:37:48,077 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 05:37:48,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:37:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:37:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:37:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:37:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:37:48,095 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:37:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:37:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:37:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:37:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:37:48,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:37:48,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:37:48,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:37:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:37:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:37:48,099 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 05:37:48,251 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:37:48,253 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:37:48,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:37:48,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:37:48,752 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:37:48,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:48 BoogieIcfgContainer [2023-08-24 05:37:48,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:37:48,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:37:48,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:37:48,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:37:48,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:37:47" (1/3) ... [2023-08-24 05:37:48,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2bf775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:48, skipping insertion in model container [2023-08-24 05:37:48,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:37:47" (2/3) ... [2023-08-24 05:37:48,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2bf775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:37:48, skipping insertion in model container [2023-08-24 05:37:48,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:37:48" (3/3) ... [2023-08-24 05:37:48,762 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2023-08-24 05:37:48,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:37:48,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 05:37:48,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:37:48,847 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:37:48,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2023-08-24 05:37:48,952 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-08-24 05:37:48,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:48,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-24 05:37:48,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2023-08-24 05:37:48,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2023-08-24 05:37:48,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:37:48,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-24 05:37:48,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 109 transitions, 227 flow [2023-08-24 05:37:48,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 109 transitions, 227 flow [2023-08-24 05:37:49,027 INFO L124 PetriNetUnfolderBase]: 2/109 cut-off events. [2023-08-24 05:37:49,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:49,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-24 05:37:49,031 INFO L119 LiptonReduction]: Number of co-enabled transitions 2202 [2023-08-24 05:37:53,345 INFO L134 LiptonReduction]: Checked pairs total: 6197 [2023-08-24 05:37:53,345 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-24 05:37:53,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:37:53,362 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;@302702be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:37:53,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-24 05:37:53,367 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:37:53,367 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-24 05:37:53,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:37:53,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:53,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:53,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:37:53,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash 243412563, now seen corresponding path program 1 times [2023-08-24 05:37:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:53,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030756250] [2023-08-24 05:37:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:53,799 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 05:37:53,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:53,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030756250] [2023-08-24 05:37:53,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030756250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:53,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:37:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146758618] [2023-08-24 05:37:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:53,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:53,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:53,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:53,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-24 05:37:53,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 05:37:53,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:53,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-24 05:37:53,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:54,509 INFO L124 PetriNetUnfolderBase]: 2147/3120 cut-off events. [2023-08-24 05:37:54,510 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-24 05:37:54,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6315 conditions, 3120 events. 2147/3120 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14344 event pairs, 322 based on Foata normal form. 0/2939 useless extension candidates. Maximal degree in co-relation 6304. Up to 2576 conditions per place. [2023-08-24 05:37:54,529 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 33 selfloop transitions, 2 changer transitions 2/38 dead transitions. [2023-08-24 05:37:54,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 159 flow [2023-08-24 05:37:54,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-08-24 05:37:54,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5129449838187702 [2023-08-24 05:37:54,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-08-24 05:37:54,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-08-24 05:37:54,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:54,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-08-24 05:37:54,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 05:37:54,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 05:37:54,553 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 05:37:54,555 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 61 flow. Second operand 3 states and 317 transitions. [2023-08-24 05:37:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 159 flow [2023-08-24 05:37:54,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 156 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:37:54,564 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 58 flow [2023-08-24 05:37:54,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-24 05:37:54,570 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-24 05:37:54,571 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 58 flow [2023-08-24 05:37:54,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states 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 05:37:54,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:54,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:54,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:37:54,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:37:54,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1991260440, now seen corresponding path program 1 times [2023-08-24 05:37:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:54,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494627662] [2023-08-24 05:37:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:54,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:54,812 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 05:37:54,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:54,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494627662] [2023-08-24 05:37:54,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494627662] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:54,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:54,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:37:54,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285643518] [2023-08-24 05:37:54,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:54,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:37:54,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:54,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:37:54,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:37:54,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-24 05:37:54,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 05:37:54,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:54,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-24 05:37:54,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:55,226 INFO L124 PetriNetUnfolderBase]: 1466/2169 cut-off events. [2023-08-24 05:37:55,227 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-24 05:37:55,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4502 conditions, 2169 events. 1466/2169 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9222 event pairs, 698 based on Foata normal form. 90/2258 useless extension candidates. Maximal degree in co-relation 4492. Up to 1189 conditions per place. [2023-08-24 05:37:55,237 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-24 05:37:55,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-08-24 05:37:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:37:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:37:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-08-24 05:37:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080906148867314 [2023-08-24 05:37:55,243 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-08-24 05:37:55,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-08-24 05:37:55,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:55,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-08-24 05:37:55,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 05:37:55,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 05:37:55,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states 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 05:37:55,249 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 58 flow. Second operand 3 states and 314 transitions. [2023-08-24 05:37:55,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-08-24 05:37:55,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:37:55,252 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 62 flow [2023-08-24 05:37:55,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-08-24 05:37:55,253 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-08-24 05:37:55,254 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 62 flow [2023-08-24 05:37:55,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 05:37:55,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:55,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:37:55,262 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:37:55,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -490588097, now seen corresponding path program 1 times [2023-08-24 05:37:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:55,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466621618] [2023-08-24 05:37:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:55,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:56,256 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 05:37:56,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466621618] [2023-08-24 05:37:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466621618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:56,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 05:37:56,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419109991] [2023-08-24 05:37:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:56,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 05:37:56,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:56,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 05:37:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 05:37:56,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-24 05:37:56,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 05:37:56,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:56,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-24 05:37:56,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:57,139 INFO L124 PetriNetUnfolderBase]: 2979/4408 cut-off events. [2023-08-24 05:37:57,140 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-08-24 05:37:57,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9551 conditions, 4408 events. 2979/4408 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 22157 event pairs, 311 based on Foata normal form. 30/4437 useless extension candidates. Maximal degree in co-relation 9540. Up to 1595 conditions per place. [2023-08-24 05:37:57,162 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 63 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2023-08-24 05:37:57,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 87 transitions, 368 flow [2023-08-24 05:37:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:37:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:37:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 689 transitions. [2023-08-24 05:37:57,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778085991678225 [2023-08-24 05:37:57,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 689 transitions. [2023-08-24 05:37:57,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 689 transitions. [2023-08-24 05:37:57,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:57,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 689 transitions. [2023-08-24 05:37:57,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 98.42857142857143) internal successors, (689), 7 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 05:37:57,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:37:57,171 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:37:57,172 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 62 flow. Second operand 7 states and 689 transitions. [2023-08-24 05:37:57,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 87 transitions, 368 flow [2023-08-24 05:37:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 87 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:37:57,190 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 225 flow [2023-08-24 05:37:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-08-24 05:37:57,191 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-24 05:37:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 225 flow [2023-08-24 05:37:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 05:37:57,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:57,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:37:57,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:37:57,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash -493473887, now seen corresponding path program 2 times [2023-08-24 05:37:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368155713] [2023-08-24 05:37:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:58,193 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 05:37:58,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:58,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368155713] [2023-08-24 05:37:58,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368155713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:58,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:58,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 05:37:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567954018] [2023-08-24 05:37:58,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 05:37:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:58,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 05:37:58,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 05:37:58,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-24 05:37:58,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:58,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:58,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-24 05:37:58,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:37:58,960 INFO L124 PetriNetUnfolderBase]: 3207/4755 cut-off events. [2023-08-24 05:37:58,960 INFO L125 PetriNetUnfolderBase]: For 5345/5345 co-relation queries the response was YES. [2023-08-24 05:37:58,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16189 conditions, 4755 events. 3207/4755 cut-off events. For 5345/5345 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 24337 event pairs, 1323 based on Foata normal form. 30/4785 useless extension candidates. Maximal degree in co-relation 16174. Up to 4360 conditions per place. [2023-08-24 05:37:58,999 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 71 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-08-24 05:37:59,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 83 transitions, 568 flow [2023-08-24 05:37:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:37:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:37:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 477 transitions. [2023-08-24 05:37:59,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46310679611650485 [2023-08-24 05:37:59,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 477 transitions. [2023-08-24 05:37:59,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 477 transitions. [2023-08-24 05:37:59,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:37:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 477 transitions. [2023-08-24 05:37:59,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 05:37:59,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:37:59,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:37:59,007 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 225 flow. Second operand 5 states and 477 transitions. [2023-08-24 05:37:59,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 83 transitions, 568 flow [2023-08-24 05:37:59,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 83 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:37:59,012 INFO L231 Difference]: Finished difference. Result has 48 places, 55 transitions, 336 flow [2023-08-24 05:37:59,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=48, PETRI_TRANSITIONS=55} [2023-08-24 05:37:59,013 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2023-08-24 05:37:59,013 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 55 transitions, 336 flow [2023-08-24 05:37:59,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:37:59,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:37:59,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:37:59,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:37:59,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:37:59,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:37:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1843269276, now seen corresponding path program 1 times [2023-08-24 05:37:59,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:37:59,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421048269] [2023-08-24 05:37:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:37:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:37:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:37:59,931 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 05:37:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:37:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421048269] [2023-08-24 05:37:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421048269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:37:59,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:37:59,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 05:37:59,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924404174] [2023-08-24 05:37:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:37:59,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 05:37:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:37:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 05:37:59,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 05:37:59,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2023-08-24 05:37:59,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 55 transitions, 336 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 05:37:59,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:37:59,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2023-08-24 05:37:59,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:01,157 INFO L124 PetriNetUnfolderBase]: 4058/6015 cut-off events. [2023-08-24 05:38:01,157 INFO L125 PetriNetUnfolderBase]: For 9729/9729 co-relation queries the response was YES. [2023-08-24 05:38:01,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22113 conditions, 6015 events. 4058/6015 cut-off events. For 9729/9729 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 32050 event pairs, 896 based on Foata normal form. 72/6086 useless extension candidates. Maximal degree in co-relation 22094. Up to 4374 conditions per place. [2023-08-24 05:38:01,200 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 70 selfloop transitions, 16 changer transitions 26/113 dead transitions. [2023-08-24 05:38:01,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 113 transitions, 852 flow [2023-08-24 05:38:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:38:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:38:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 684 transitions. [2023-08-24 05:38:01,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47434119278779474 [2023-08-24 05:38:01,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 684 transitions. [2023-08-24 05:38:01,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 684 transitions. [2023-08-24 05:38:01,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:01,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 684 transitions. [2023-08-24 05:38:01,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.71428571428571) internal successors, (684), 7 states have internal predecessors, (684), 0 states have call successors, (0), 0 states 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 05:38:01,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:01,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:01,209 INFO L175 Difference]: Start difference. First operand has 48 places, 55 transitions, 336 flow. Second operand 7 states and 684 transitions. [2023-08-24 05:38:01,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 113 transitions, 852 flow [2023-08-24 05:38:01,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 113 transitions, 838 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 05:38:01,222 INFO L231 Difference]: Finished difference. Result has 59 places, 67 transitions, 504 flow [2023-08-24 05:38:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=59, PETRI_TRANSITIONS=67} [2023-08-24 05:38:01,224 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-24 05:38:01,225 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 67 transitions, 504 flow [2023-08-24 05:38:01,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 05:38:01,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:01,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:01,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:38:01,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:01,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1926386166, now seen corresponding path program 2 times [2023-08-24 05:38:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:01,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896852532] [2023-08-24 05:38:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:02,245 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 05:38:02,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:02,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896852532] [2023-08-24 05:38:02,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896852532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:02,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:02,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 05:38:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077052725] [2023-08-24 05:38:02,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:02,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 05:38:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 05:38:02,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 05:38:02,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:02,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 67 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 05:38:02,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:02,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:02,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:03,680 INFO L124 PetriNetUnfolderBase]: 4339/6521 cut-off events. [2023-08-24 05:38:03,680 INFO L125 PetriNetUnfolderBase]: For 20135/20135 co-relation queries the response was YES. [2023-08-24 05:38:03,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27856 conditions, 6521 events. 4339/6521 cut-off events. For 20135/20135 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35695 event pairs, 583 based on Foata normal form. 30/6549 useless extension candidates. Maximal degree in co-relation 27830. Up to 4593 conditions per place. [2023-08-24 05:38:03,728 INFO L140 encePairwiseOnDemand]: 193/206 looper letters, 92 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2023-08-24 05:38:03,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 140 transitions, 1282 flow [2023-08-24 05:38:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:38:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:38:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 746 transitions. [2023-08-24 05:38:03,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526699029126214 [2023-08-24 05:38:03,731 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 746 transitions. [2023-08-24 05:38:03,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 746 transitions. [2023-08-24 05:38:03,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:03,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 746 transitions. [2023-08-24 05:38:03,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.25) internal successors, (746), 8 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 05:38:03,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:03,736 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:03,737 INFO L175 Difference]: Start difference. First operand has 59 places, 67 transitions, 504 flow. Second operand 8 states and 746 transitions. [2023-08-24 05:38:03,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 140 transitions, 1282 flow [2023-08-24 05:38:03,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 140 transitions, 1194 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-08-24 05:38:03,797 INFO L231 Difference]: Finished difference. Result has 63 places, 107 transitions, 963 flow [2023-08-24 05:38:03,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=963, PETRI_PLACES=63, PETRI_TRANSITIONS=107} [2023-08-24 05:38:03,798 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-08-24 05:38:03,798 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 107 transitions, 963 flow [2023-08-24 05:38:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 0 states have call successors, (0), 0 states 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 05:38:03,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:03,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:38:03,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:03,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1882132116, now seen corresponding path program 3 times [2023-08-24 05:38:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393909467] [2023-08-24 05:38:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:03,963 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 05:38:03,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:03,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393909467] [2023-08-24 05:38:03,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393909467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:03,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:03,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:03,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23653001] [2023-08-24 05:38:03,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:03,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:38:03,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:38:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:38:03,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-24 05:38:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 107 transitions, 963 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 05:38:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-24 05:38:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:04,789 INFO L124 PetriNetUnfolderBase]: 3082/4936 cut-off events. [2023-08-24 05:38:04,789 INFO L125 PetriNetUnfolderBase]: For 29205/29205 co-relation queries the response was YES. [2023-08-24 05:38:04,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23448 conditions, 4936 events. 3082/4936 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29043 event pairs, 542 based on Foata normal form. 530/5464 useless extension candidates. Maximal degree in co-relation 23421. Up to 2125 conditions per place. [2023-08-24 05:38:04,824 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 226 selfloop transitions, 5 changer transitions 1/233 dead transitions. [2023-08-24 05:38:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 233 transitions, 2576 flow [2023-08-24 05:38:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:38:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:38:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 406 transitions. [2023-08-24 05:38:04,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49271844660194175 [2023-08-24 05:38:04,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 406 transitions. [2023-08-24 05:38:04,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 406 transitions. [2023-08-24 05:38:04,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:04,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 406 transitions. [2023-08-24 05:38:04,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 05:38:04,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 05:38:04,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 05:38:04,829 INFO L175 Difference]: Start difference. First operand has 63 places, 107 transitions, 963 flow. Second operand 4 states and 406 transitions. [2023-08-24 05:38:04,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 233 transitions, 2576 flow [2023-08-24 05:38:04,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 233 transitions, 2405 flow, removed 77 selfloop flow, removed 2 redundant places. [2023-08-24 05:38:04,865 INFO L231 Difference]: Finished difference. Result has 66 places, 109 transitions, 911 flow [2023-08-24 05:38:04,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=911, PETRI_PLACES=66, PETRI_TRANSITIONS=109} [2023-08-24 05:38:04,866 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-24 05:38:04,866 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 109 transitions, 911 flow [2023-08-24 05:38:04,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 05:38:04,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:04,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:04,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:38:04,866 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:04,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -374592395, now seen corresponding path program 1 times [2023-08-24 05:38:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035262395] [2023-08-24 05:38:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:05,044 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 05:38:05,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:05,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035262395] [2023-08-24 05:38:05,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035262395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:05,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:05,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:38:05,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484566292] [2023-08-24 05:38:05,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:05,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:38:05,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:05,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:38:05,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:38:05,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-24 05:38:05,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 109 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 05:38:05,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:05,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-24 05:38:05,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:05,548 INFO L124 PetriNetUnfolderBase]: 1387/2368 cut-off events. [2023-08-24 05:38:05,548 INFO L125 PetriNetUnfolderBase]: For 15515/15515 co-relation queries the response was YES. [2023-08-24 05:38:05,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 2368 events. 1387/2368 cut-off events. For 15515/15515 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13036 event pairs, 155 based on Foata normal form. 239/2605 useless extension candidates. Maximal degree in co-relation 11758. Up to 1100 conditions per place. [2023-08-24 05:38:05,565 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 205 selfloop transitions, 8 changer transitions 1/215 dead transitions. [2023-08-24 05:38:05,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 215 transitions, 2229 flow [2023-08-24 05:38:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:38:05,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:38:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2023-08-24 05:38:05,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941747572815534 [2023-08-24 05:38:05,567 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2023-08-24 05:38:05,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2023-08-24 05:38:05,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:05,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2023-08-24 05:38:05,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 05:38:05,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:38:05,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:38:05,572 INFO L175 Difference]: Start difference. First operand has 66 places, 109 transitions, 911 flow. Second operand 5 states and 509 transitions. [2023-08-24 05:38:05,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 215 transitions, 2229 flow [2023-08-24 05:38:05,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 215 transitions, 2179 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-24 05:38:05,588 INFO L231 Difference]: Finished difference. Result has 69 places, 105 transitions, 877 flow [2023-08-24 05:38:05,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=877, PETRI_PLACES=69, PETRI_TRANSITIONS=105} [2023-08-24 05:38:05,589 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-24 05:38:05,589 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 105 transitions, 877 flow [2023-08-24 05:38:05,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 05:38:05,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:05,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:05,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:38:05,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:05,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:05,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1199572637, now seen corresponding path program 1 times [2023-08-24 05:38:05,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:05,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815905990] [2023-08-24 05:38:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:05,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:06,747 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 05:38:06,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:06,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815905990] [2023-08-24 05:38:06,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815905990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:06,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:06,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 05:38:06,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983235272] [2023-08-24 05:38:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:06,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 05:38:06,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:06,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 05:38:06,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-24 05:38:06,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:06,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 105 transitions, 877 flow. Second operand has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 05:38:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:07,398 INFO L124 PetriNetUnfolderBase]: 1137/2014 cut-off events. [2023-08-24 05:38:07,398 INFO L125 PetriNetUnfolderBase]: For 9471/9471 co-relation queries the response was YES. [2023-08-24 05:38:07,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10503 conditions, 2014 events. 1137/2014 cut-off events. For 9471/9471 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11048 event pairs, 98 based on Foata normal form. 13/2027 useless extension candidates. Maximal degree in co-relation 10473. Up to 1347 conditions per place. [2023-08-24 05:38:07,414 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 109 selfloop transitions, 55 changer transitions 21/186 dead transitions. [2023-08-24 05:38:07,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 186 transitions, 1911 flow [2023-08-24 05:38:07,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:38:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:38:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 759 transitions. [2023-08-24 05:38:07,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46055825242718446 [2023-08-24 05:38:07,417 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 759 transitions. [2023-08-24 05:38:07,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 759 transitions. [2023-08-24 05:38:07,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:07,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 759 transitions. [2023-08-24 05:38:07,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 94.875) internal successors, (759), 8 states have internal predecessors, (759), 0 states have call successors, (0), 0 states 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 05:38:07,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:07,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:07,423 INFO L175 Difference]: Start difference. First operand has 69 places, 105 transitions, 877 flow. Second operand 8 states and 759 transitions. [2023-08-24 05:38:07,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 186 transitions, 1911 flow [2023-08-24 05:38:07,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 186 transitions, 1801 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-24 05:38:07,445 INFO L231 Difference]: Finished difference. Result has 75 places, 130 transitions, 1283 flow [2023-08-24 05:38:07,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1283, PETRI_PLACES=75, PETRI_TRANSITIONS=130} [2023-08-24 05:38:07,446 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2023-08-24 05:38:07,447 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 130 transitions, 1283 flow [2023-08-24 05:38:07,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 85.25) internal successors, (682), 8 states have internal predecessors, (682), 0 states have call successors, (0), 0 states 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 05:38:07,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:07,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:07,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:38:07,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:07,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -866549243, now seen corresponding path program 2 times [2023-08-24 05:38:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128155560] [2023-08-24 05:38:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:07,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:09,409 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 05:38:09,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:09,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128155560] [2023-08-24 05:38:09,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128155560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:09,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:09,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 05:38:09,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829447459] [2023-08-24 05:38:09,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:09,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 05:38:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 05:38:09,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-08-24 05:38:09,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 206 [2023-08-24 05:38:09,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 130 transitions, 1283 flow. Second operand has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 05:38:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 206 [2023-08-24 05:38:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:10,393 INFO L124 PetriNetUnfolderBase]: 1476/2651 cut-off events. [2023-08-24 05:38:10,394 INFO L125 PetriNetUnfolderBase]: For 14509/14509 co-relation queries the response was YES. [2023-08-24 05:38:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14547 conditions, 2651 events. 1476/2651 cut-off events. For 14509/14509 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 15803 event pairs, 104 based on Foata normal form. 9/2660 useless extension candidates. Maximal degree in co-relation 14515. Up to 1638 conditions per place. [2023-08-24 05:38:10,415 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 141 selfloop transitions, 69 changer transitions 22/233 dead transitions. [2023-08-24 05:38:10,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 233 transitions, 2563 flow [2023-08-24 05:38:10,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:38:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:38:10,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 748 transitions. [2023-08-24 05:38:10,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4538834951456311 [2023-08-24 05:38:10,419 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 748 transitions. [2023-08-24 05:38:10,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 748 transitions. [2023-08-24 05:38:10,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:10,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 748 transitions. [2023-08-24 05:38:10,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.5) internal successors, (748), 8 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 05:38:10,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:10,424 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:10,424 INFO L175 Difference]: Start difference. First operand has 75 places, 130 transitions, 1283 flow. Second operand 8 states and 748 transitions. [2023-08-24 05:38:10,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 233 transitions, 2563 flow [2023-08-24 05:38:10,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 233 transitions, 2537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:38:10,453 INFO L231 Difference]: Finished difference. Result has 86 places, 169 transitions, 1934 flow [2023-08-24 05:38:10,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1934, PETRI_PLACES=86, PETRI_TRANSITIONS=169} [2023-08-24 05:38:10,453 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-08-24 05:38:10,454 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 169 transitions, 1934 flow [2023-08-24 05:38:10,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.63636363636364) internal successors, (909), 11 states have internal predecessors, (909), 0 states have call successors, (0), 0 states 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 05:38:10,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:10,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:10,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:38:10,455 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:10,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 599341699, now seen corresponding path program 3 times [2023-08-24 05:38:10,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:10,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920706603] [2023-08-24 05:38:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:11,545 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 05:38:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920706603] [2023-08-24 05:38:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920706603] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:11,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:11,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 05:38:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109386499] [2023-08-24 05:38:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:11,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 05:38:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 05:38:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 05:38:11,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2023-08-24 05:38:11,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 169 transitions, 1934 flow. Second operand has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 05:38:11,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:11,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2023-08-24 05:38:11,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:12,348 INFO L124 PetriNetUnfolderBase]: 1611/2912 cut-off events. [2023-08-24 05:38:12,348 INFO L125 PetriNetUnfolderBase]: For 21053/21053 co-relation queries the response was YES. [2023-08-24 05:38:12,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17783 conditions, 2912 events. 1611/2912 cut-off events. For 21053/21053 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17842 event pairs, 252 based on Foata normal form. 13/2923 useless extension candidates. Maximal degree in co-relation 17744. Up to 1086 conditions per place. [2023-08-24 05:38:12,370 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 140 selfloop transitions, 40 changer transitions 67/248 dead transitions. [2023-08-24 05:38:12,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 248 transitions, 3105 flow [2023-08-24 05:38:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:38:12,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:38:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 683 transitions. [2023-08-24 05:38:12,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736477115117892 [2023-08-24 05:38:12,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 683 transitions. [2023-08-24 05:38:12,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 683 transitions. [2023-08-24 05:38:12,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:12,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 683 transitions. [2023-08-24 05:38:12,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.57142857142857) internal successors, (683), 7 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 05:38:12,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:12,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:12,378 INFO L175 Difference]: Start difference. First operand has 86 places, 169 transitions, 1934 flow. Second operand 7 states and 683 transitions. [2023-08-24 05:38:12,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 248 transitions, 3105 flow [2023-08-24 05:38:12,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 248 transitions, 3071 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-24 05:38:12,424 INFO L231 Difference]: Finished difference. Result has 94 places, 129 transitions, 1505 flow [2023-08-24 05:38:12,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1505, PETRI_PLACES=94, PETRI_TRANSITIONS=129} [2023-08-24 05:38:12,425 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 58 predicate places. [2023-08-24 05:38:12,425 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 129 transitions, 1505 flow [2023-08-24 05:38:12,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.25) internal successors, (698), 8 states have internal predecessors, (698), 0 states have call successors, (0), 0 states 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 05:38:12,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:12,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:12,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 05:38:12,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:12,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:12,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1353506417, now seen corresponding path program 4 times [2023-08-24 05:38:12,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:12,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617835339] [2023-08-24 05:38:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:12,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:13,448 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 05:38:13,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:13,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617835339] [2023-08-24 05:38:13,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617835339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:13,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:13,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 05:38:13,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784392715] [2023-08-24 05:38:13,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:13,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 05:38:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:13,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 05:38:13,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-24 05:38:13,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-08-24 05:38:13,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 129 transitions, 1505 flow. Second operand has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 05:38:13,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:13,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-08-24 05:38:13,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:13,967 INFO L124 PetriNetUnfolderBase]: 1339/2509 cut-off events. [2023-08-24 05:38:13,967 INFO L125 PetriNetUnfolderBase]: For 19547/19547 co-relation queries the response was YES. [2023-08-24 05:38:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15409 conditions, 2509 events. 1339/2509 cut-off events. For 19547/19547 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15464 event pairs, 212 based on Foata normal form. 11/2518 useless extension candidates. Maximal degree in co-relation 15366. Up to 1338 conditions per place. [2023-08-24 05:38:13,987 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 119 selfloop transitions, 63 changer transitions 21/204 dead transitions. [2023-08-24 05:38:13,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 204 transitions, 2664 flow [2023-08-24 05:38:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:38:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:38:13,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 578 transitions. [2023-08-24 05:38:13,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46763754045307443 [2023-08-24 05:38:13,990 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 578 transitions. [2023-08-24 05:38:13,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 578 transitions. [2023-08-24 05:38:13,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:13,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 578 transitions. [2023-08-24 05:38:13,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 96.33333333333333) internal successors, (578), 6 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 05:38:13,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:13,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:13,994 INFO L175 Difference]: Start difference. First operand has 94 places, 129 transitions, 1505 flow. Second operand 6 states and 578 transitions. [2023-08-24 05:38:13,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 204 transitions, 2664 flow [2023-08-24 05:38:14,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 204 transitions, 2517 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-08-24 05:38:14,037 INFO L231 Difference]: Finished difference. Result has 95 places, 154 transitions, 1960 flow [2023-08-24 05:38:14,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1960, PETRI_PLACES=95, PETRI_TRANSITIONS=154} [2023-08-24 05:38:14,038 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 59 predicate places. [2023-08-24 05:38:14,038 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 154 transitions, 1960 flow [2023-08-24 05:38:14,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 05:38:14,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:14,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:14,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 05:38:14,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:14,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:14,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1399488825, now seen corresponding path program 5 times [2023-08-24 05:38:14,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:14,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652049478] [2023-08-24 05:38:14,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:14,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:15,398 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 05:38:15,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:15,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652049478] [2023-08-24 05:38:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652049478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 05:38:15,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240082375] [2023-08-24 05:38:15,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 05:38:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 05:38:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-24 05:38:15,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:15,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 154 transitions, 1960 flow. Second operand has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 05:38:15,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:15,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:15,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:16,047 INFO L124 PetriNetUnfolderBase]: 1393/2631 cut-off events. [2023-08-24 05:38:16,047 INFO L125 PetriNetUnfolderBase]: For 23021/23021 co-relation queries the response was YES. [2023-08-24 05:38:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16750 conditions, 2631 events. 1393/2631 cut-off events. For 23021/23021 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16502 event pairs, 124 based on Foata normal form. 9/2640 useless extension candidates. Maximal degree in co-relation 16706. Up to 1319 conditions per place. [2023-08-24 05:38:16,063 INFO L140 encePairwiseOnDemand]: 196/206 looper letters, 125 selfloop transitions, 70 changer transitions 16/212 dead transitions. [2023-08-24 05:38:16,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 212 transitions, 2862 flow [2023-08-24 05:38:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:38:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:38:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 663 transitions. [2023-08-24 05:38:16,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977808599167824 [2023-08-24 05:38:16,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 663 transitions. [2023-08-24 05:38:16,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 663 transitions. [2023-08-24 05:38:16,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:16,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 663 transitions. [2023-08-24 05:38:16,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.71428571428571) internal successors, (663), 7 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 05:38:16,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:16,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states 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 05:38:16,071 INFO L175 Difference]: Start difference. First operand has 95 places, 154 transitions, 1960 flow. Second operand 7 states and 663 transitions. [2023-08-24 05:38:16,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 212 transitions, 2862 flow [2023-08-24 05:38:16,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 212 transitions, 2826 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-24 05:38:16,129 INFO L231 Difference]: Finished difference. Result has 101 places, 160 transitions, 2210 flow [2023-08-24 05:38:16,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2210, PETRI_PLACES=101, PETRI_TRANSITIONS=160} [2023-08-24 05:38:16,130 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 65 predicate places. [2023-08-24 05:38:16,130 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 160 transitions, 2210 flow [2023-08-24 05:38:16,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.8) internal successors, (848), 10 states have internal predecessors, (848), 0 states have call successors, (0), 0 states 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 05:38:16,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:16,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 05:38:16,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:16,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1264858163, now seen corresponding path program 6 times [2023-08-24 05:38:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143317929] [2023-08-24 05:38:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:17,284 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 05:38:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143317929] [2023-08-24 05:38:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143317929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:17,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 05:38:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182453280] [2023-08-24 05:38:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:17,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 05:38:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 05:38:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-24 05:38:17,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:17,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 160 transitions, 2210 flow. Second operand has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 05:38:17,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:17,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:17,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:18,212 INFO L124 PetriNetUnfolderBase]: 2056/3907 cut-off events. [2023-08-24 05:38:18,212 INFO L125 PetriNetUnfolderBase]: For 41608/41608 co-relation queries the response was YES. [2023-08-24 05:38:18,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26435 conditions, 3907 events. 2056/3907 cut-off events. For 41608/41608 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 27131 event pairs, 232 based on Foata normal form. 31/3937 useless extension candidates. Maximal degree in co-relation 26389. Up to 1715 conditions per place. [2023-08-24 05:38:18,235 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 166 selfloop transitions, 92 changer transitions 44/303 dead transitions. [2023-08-24 05:38:18,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 303 transitions, 4598 flow [2023-08-24 05:38:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:38:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:38:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 765 transitions. [2023-08-24 05:38:18,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641990291262136 [2023-08-24 05:38:18,238 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 765 transitions. [2023-08-24 05:38:18,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 765 transitions. [2023-08-24 05:38:18,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:18,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 765 transitions. [2023-08-24 05:38:18,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.625) internal successors, (765), 8 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 05:38:18,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:18,243 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:18,243 INFO L175 Difference]: Start difference. First operand has 101 places, 160 transitions, 2210 flow. Second operand 8 states and 765 transitions. [2023-08-24 05:38:18,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 303 transitions, 4598 flow [2023-08-24 05:38:18,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 303 transitions, 4472 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-24 05:38:18,311 INFO L231 Difference]: Finished difference. Result has 108 places, 207 transitions, 3286 flow [2023-08-24 05:38:18,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3286, PETRI_PLACES=108, PETRI_TRANSITIONS=207} [2023-08-24 05:38:18,312 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2023-08-24 05:38:18,312 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 207 transitions, 3286 flow [2023-08-24 05:38:18,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 05:38:18,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:18,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:18,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 05:38:18,313 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:18,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash 904015331, now seen corresponding path program 7 times [2023-08-24 05:38:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:18,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368555681] [2023-08-24 05:38:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:18,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:18,510 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 05:38:18,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:18,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368555681] [2023-08-24 05:38:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368555681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:18,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 05:38:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581534298] [2023-08-24 05:38:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:18,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:38:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:38:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:38:18,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2023-08-24 05:38:18,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 207 transitions, 3286 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 05:38:18,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:18,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2023-08-24 05:38:18,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:19,114 INFO L124 PetriNetUnfolderBase]: 1729/3326 cut-off events. [2023-08-24 05:38:19,115 INFO L125 PetriNetUnfolderBase]: For 52353/52353 co-relation queries the response was YES. [2023-08-24 05:38:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 3326 events. 1729/3326 cut-off events. For 52353/52353 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 23435 event pairs, 151 based on Foata normal form. 154/3478 useless extension candidates. Maximal degree in co-relation 24118. Up to 1300 conditions per place. [2023-08-24 05:38:19,133 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 351 selfloop transitions, 11 changer transitions 55/418 dead transitions. [2023-08-24 05:38:19,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 418 transitions, 7796 flow [2023-08-24 05:38:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:38:19,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:38:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 582 transitions. [2023-08-24 05:38:19,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470873786407767 [2023-08-24 05:38:19,135 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 582 transitions. [2023-08-24 05:38:19,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 582 transitions. [2023-08-24 05:38:19,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:19,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 582 transitions. [2023-08-24 05:38:19,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 05:38:19,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:19,139 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:19,139 INFO L175 Difference]: Start difference. First operand has 108 places, 207 transitions, 3286 flow. Second operand 6 states and 582 transitions. [2023-08-24 05:38:19,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 418 transitions, 7796 flow [2023-08-24 05:38:19,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 418 transitions, 7405 flow, removed 156 selfloop flow, removed 3 redundant places. [2023-08-24 05:38:19,207 INFO L231 Difference]: Finished difference. Result has 111 places, 201 transitions, 3102 flow [2023-08-24 05:38:19,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3102, PETRI_PLACES=111, PETRI_TRANSITIONS=201} [2023-08-24 05:38:19,208 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 75 predicate places. [2023-08-24 05:38:19,208 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 201 transitions, 3102 flow [2023-08-24 05:38:19,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 05:38:19,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:19,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 05:38:19,208 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:19,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 281286571, now seen corresponding path program 1 times [2023-08-24 05:38:19,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:19,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393528399] [2023-08-24 05:38:19,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:21,104 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 05:38:21,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393528399] [2023-08-24 05:38:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393528399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 05:38:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475773957] [2023-08-24 05:38:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 05:38:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 05:38:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-24 05:38:21,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:21,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 201 transitions, 3102 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 05:38:21,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:21,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:22,135 INFO L124 PetriNetUnfolderBase]: 1932/3753 cut-off events. [2023-08-24 05:38:22,135 INFO L125 PetriNetUnfolderBase]: For 47072/47072 co-relation queries the response was YES. [2023-08-24 05:38:22,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27909 conditions, 3753 events. 1932/3753 cut-off events. For 47072/47072 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 27054 event pairs, 292 based on Foata normal form. 1/3752 useless extension candidates. Maximal degree in co-relation 27857. Up to 2169 conditions per place. [2023-08-24 05:38:22,159 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 213 selfloop transitions, 112 changer transitions 24/350 dead transitions. [2023-08-24 05:38:22,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 350 transitions, 5685 flow [2023-08-24 05:38:22,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 05:38:22,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 05:38:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1107 transitions. [2023-08-24 05:38:22,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44781553398058255 [2023-08-24 05:38:22,163 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1107 transitions. [2023-08-24 05:38:22,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1107 transitions. [2023-08-24 05:38:22,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:22,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1107 transitions. [2023-08-24 05:38:22,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.25) internal successors, (1107), 12 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 05:38:22,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 05:38:22,168 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 05:38:22,168 INFO L175 Difference]: Start difference. First operand has 111 places, 201 transitions, 3102 flow. Second operand 12 states and 1107 transitions. [2023-08-24 05:38:22,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 350 transitions, 5685 flow [2023-08-24 05:38:22,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 350 transitions, 5398 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-08-24 05:38:22,271 INFO L231 Difference]: Finished difference. Result has 119 places, 262 transitions, 4301 flow [2023-08-24 05:38:22,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4301, PETRI_PLACES=119, PETRI_TRANSITIONS=262} [2023-08-24 05:38:22,272 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 83 predicate places. [2023-08-24 05:38:22,272 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 262 transitions, 4301 flow [2023-08-24 05:38:22,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 05:38:22,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:22,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 05:38:22,273 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:22,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:22,274 INFO L85 PathProgramCache]: Analyzing trace with hash 135882733, now seen corresponding path program 2 times [2023-08-24 05:38:22,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:22,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031909314] [2023-08-24 05:38:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:23,738 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 05:38:23,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031909314] [2023-08-24 05:38:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031909314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:23,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 05:38:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795283725] [2023-08-24 05:38:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:23,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 05:38:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 05:38:23,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-08-24 05:38:23,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 206 [2023-08-24 05:38:23,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 262 transitions, 4301 flow. Second operand has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 05:38:23,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:23,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 206 [2023-08-24 05:38:23,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:24,756 INFO L124 PetriNetUnfolderBase]: 2096/4130 cut-off events. [2023-08-24 05:38:24,756 INFO L125 PetriNetUnfolderBase]: For 55560/55560 co-relation queries the response was YES. [2023-08-24 05:38:24,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29332 conditions, 4130 events. 2096/4130 cut-off events. For 55560/55560 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 30922 event pairs, 355 based on Foata normal form. 2/4130 useless extension candidates. Maximal degree in co-relation 29278. Up to 1918 conditions per place. [2023-08-24 05:38:24,784 INFO L140 encePairwiseOnDemand]: 195/206 looper letters, 196 selfloop transitions, 79 changer transitions 77/353 dead transitions. [2023-08-24 05:38:24,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 353 transitions, 6279 flow [2023-08-24 05:38:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 05:38:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 05:38:24,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 747 transitions. [2023-08-24 05:38:24,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4532766990291262 [2023-08-24 05:38:24,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 747 transitions. [2023-08-24 05:38:24,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 747 transitions. [2023-08-24 05:38:24,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:24,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 747 transitions. [2023-08-24 05:38:24,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 93.375) internal successors, (747), 8 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 05:38:24,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:24,792 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states 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 05:38:24,792 INFO L175 Difference]: Start difference. First operand has 119 places, 262 transitions, 4301 flow. Second operand 8 states and 747 transitions. [2023-08-24 05:38:24,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 353 transitions, 6279 flow [2023-08-24 05:38:24,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 353 transitions, 5861 flow, removed 192 selfloop flow, removed 1 redundant places. [2023-08-24 05:38:24,931 INFO L231 Difference]: Finished difference. Result has 128 places, 240 transitions, 3925 flow [2023-08-24 05:38:24,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3925, PETRI_PLACES=128, PETRI_TRANSITIONS=240} [2023-08-24 05:38:24,932 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2023-08-24 05:38:24,932 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 240 transitions, 3925 flow [2023-08-24 05:38:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 85.3) internal successors, (853), 10 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 05:38:24,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:24,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:24,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 05:38:24,932 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:24,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:24,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1097508209, now seen corresponding path program 3 times [2023-08-24 05:38:24,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:24,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358225825] [2023-08-24 05:38:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:24,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:26,688 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 05:38:26,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:26,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358225825] [2023-08-24 05:38:26,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358225825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:26,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:26,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 05:38:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688570650] [2023-08-24 05:38:26,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:26,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 05:38:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:26,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 05:38:26,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-24 05:38:26,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 206 [2023-08-24 05:38:26,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 240 transitions, 3925 flow. Second operand has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 05:38:26,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:26,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 206 [2023-08-24 05:38:26,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:28,173 INFO L124 PetriNetUnfolderBase]: 2289/4534 cut-off events. [2023-08-24 05:38:28,173 INFO L125 PetriNetUnfolderBase]: For 66022/66022 co-relation queries the response was YES. [2023-08-24 05:38:28,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32333 conditions, 4534 events. 2289/4534 cut-off events. For 66022/66022 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 34681 event pairs, 277 based on Foata normal form. 8/4542 useless extension candidates. Maximal degree in co-relation 32274. Up to 1719 conditions per place. [2023-08-24 05:38:28,209 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 197 selfloop transitions, 142 changer transitions 82/422 dead transitions. [2023-08-24 05:38:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 422 transitions, 6894 flow [2023-08-24 05:38:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 05:38:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 05:38:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1080 transitions. [2023-08-24 05:38:28,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368932038834951 [2023-08-24 05:38:28,211 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1080 transitions. [2023-08-24 05:38:28,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1080 transitions. [2023-08-24 05:38:28,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:28,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1080 transitions. [2023-08-24 05:38:28,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 05:38:28,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 05:38:28,217 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 206.0) internal successors, (2678), 13 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states 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 05:38:28,217 INFO L175 Difference]: Start difference. First operand has 128 places, 240 transitions, 3925 flow. Second operand 12 states and 1080 transitions. [2023-08-24 05:38:28,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 422 transitions, 6894 flow [2023-08-24 05:38:28,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 422 transitions, 6783 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-24 05:38:28,369 INFO L231 Difference]: Finished difference. Result has 141 places, 274 transitions, 5156 flow [2023-08-24 05:38:28,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5156, PETRI_PLACES=141, PETRI_TRANSITIONS=274} [2023-08-24 05:38:28,370 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 105 predicate places. [2023-08-24 05:38:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 274 transitions, 5156 flow [2023-08-24 05:38:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 05:38:28,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:28,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:28,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 05:38:28,370 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:28,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1544432667, now seen corresponding path program 4 times [2023-08-24 05:38:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438277449] [2023-08-24 05:38:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:28,531 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 05:38:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:28,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438277449] [2023-08-24 05:38:28,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438277449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:28,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:28,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888412069] [2023-08-24 05:38:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:38:28,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:38:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:38:28,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2023-08-24 05:38:28,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 274 transitions, 5156 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 05:38:28,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:28,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2023-08-24 05:38:28,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:29,492 INFO L124 PetriNetUnfolderBase]: 2882/5564 cut-off events. [2023-08-24 05:38:29,492 INFO L125 PetriNetUnfolderBase]: For 103775/103775 co-relation queries the response was YES. [2023-08-24 05:38:29,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43105 conditions, 5564 events. 2882/5564 cut-off events. For 103775/103775 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 43337 event pairs, 502 based on Foata normal form. 9/5573 useless extension candidates. Maximal degree in co-relation 43041. Up to 3045 conditions per place. [2023-08-24 05:38:29,530 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 132 selfloop transitions, 1 changer transitions 302/435 dead transitions. [2023-08-24 05:38:29,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 435 transitions, 8755 flow [2023-08-24 05:38:29,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:38:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:38:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 412 transitions. [2023-08-24 05:38:29,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-24 05:38:29,531 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 412 transitions. [2023-08-24 05:38:29,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 412 transitions. [2023-08-24 05:38:29,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:29,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 412 transitions. [2023-08-24 05:38:29,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 05:38:29,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 05:38:29,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states 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 05:38:29,533 INFO L175 Difference]: Start difference. First operand has 141 places, 274 transitions, 5156 flow. Second operand 4 states and 412 transitions. [2023-08-24 05:38:29,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 435 transitions, 8755 flow [2023-08-24 05:38:29,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 435 transitions, 8405 flow, removed 120 selfloop flow, removed 9 redundant places. [2023-08-24 05:38:29,749 INFO L231 Difference]: Finished difference. Result has 134 places, 111 transitions, 1750 flow [2023-08-24 05:38:29,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=4880, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1750, PETRI_PLACES=134, PETRI_TRANSITIONS=111} [2023-08-24 05:38:29,749 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 98 predicate places. [2023-08-24 05:38:29,749 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 111 transitions, 1750 flow [2023-08-24 05:38:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states 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 05:38:29,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:29,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:29,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 05:38:29,750 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-24 05:38:29,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash 876648319, now seen corresponding path program 5 times [2023-08-24 05:38:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:29,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555786804] [2023-08-24 05:38:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:30,571 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 05:38:30,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:30,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555786804] [2023-08-24 05:38:30,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555786804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:30,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:30,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 05:38:30,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749317198] [2023-08-24 05:38:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 05:38:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 05:38:30,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 05:38:30,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2023-08-24 05:38:30,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 111 transitions, 1750 flow. Second operand has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 05:38:30,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:30,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2023-08-24 05:38:30,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:30,844 INFO L124 PetriNetUnfolderBase]: 569/1121 cut-off events. [2023-08-24 05:38:30,845 INFO L125 PetriNetUnfolderBase]: For 18087/18087 co-relation queries the response was YES. [2023-08-24 05:38:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8669 conditions, 1121 events. 569/1121 cut-off events. For 18087/18087 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5893 event pairs, 160 based on Foata normal form. 5/1120 useless extension candidates. Maximal degree in co-relation 8622. Up to 495 conditions per place. [2023-08-24 05:38:30,850 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 0 selfloop transitions, 0 changer transitions 127/127 dead transitions. [2023-08-24 05:38:30,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 127 transitions, 2183 flow [2023-08-24 05:38:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:38:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:38:30,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 545 transitions. [2023-08-24 05:38:30,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44093851132686085 [2023-08-24 05:38:30,851 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 545 transitions. [2023-08-24 05:38:30,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 545 transitions. [2023-08-24 05:38:30,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:30,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 545 transitions. [2023-08-24 05:38:30,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 05:38:30,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:30,853 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states 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 05:38:30,853 INFO L175 Difference]: Start difference. First operand has 134 places, 111 transitions, 1750 flow. Second operand 6 states and 545 transitions. [2023-08-24 05:38:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 127 transitions, 2183 flow [2023-08-24 05:38:30,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 127 transitions, 1825 flow, removed 111 selfloop flow, removed 27 redundant places. [2023-08-24 05:38:30,874 INFO L231 Difference]: Finished difference. Result has 102 places, 0 transitions, 0 flow [2023-08-24 05:38:30,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=102, PETRI_TRANSITIONS=0} [2023-08-24 05:38:30,874 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2023-08-24 05:38:30,875 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 0 transitions, 0 flow [2023-08-24 05:38:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states 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 05:38:30,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-24 05:38:30,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-24 05:38:30,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-24 05:38:30,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-24 05:38:30,881 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-24 05:38:30,882 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-24 05:38:30,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 05:38:30,882 INFO L445 BasicCegarLoop]: Path program histogram: [7, 5, 3, 2, 1, 1, 1] [2023-08-24 05:38:30,886 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:38:30,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:38:30,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:38:30 BasicIcfg [2023-08-24 05:38:30,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:38:30,889 INFO L158 Benchmark]: Toolchain (without parser) took 43608.13ms. Allocated memory was 360.7MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 316.4MB in the beginning and 705.4MB in the end (delta: -389.0MB). Peak memory consumption was 635.4MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,889 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:38:30,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.17ms. Allocated memory is still 360.7MB. Free memory was 316.4MB in the beginning and 288.1MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.86ms. Allocated memory is still 360.7MB. Free memory was 288.1MB in the beginning and 284.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,889 INFO L158 Benchmark]: Boogie Preprocessor took 68.46ms. Allocated memory is still 360.7MB. Free memory was 284.9MB in the beginning and 282.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,890 INFO L158 Benchmark]: RCFGBuilder took 722.52ms. Allocated memory is still 360.7MB. Free memory was 282.8MB in the beginning and 216.8MB in the end (delta: 66.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,890 INFO L158 Benchmark]: TraceAbstraction took 42132.04ms. Allocated memory was 360.7MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 215.7MB in the beginning and 705.4MB in the end (delta: -489.7MB). Peak memory consumption was 534.8MB. Max. memory is 16.0GB. [2023-08-24 05:38:30,891 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 602.17ms. Allocated memory is still 360.7MB. Free memory was 316.4MB in the beginning and 288.1MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 76.86ms. Allocated memory is still 360.7MB. Free memory was 288.1MB in the beginning and 284.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 68.46ms. Allocated memory is still 360.7MB. Free memory was 284.9MB in the beginning and 282.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 722.52ms. Allocated memory is still 360.7MB. Free memory was 282.8MB in the beginning and 216.8MB in the end (delta: 66.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.0GB. * TraceAbstraction took 42132.04ms. Allocated memory was 360.7MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 215.7MB in the beginning and 705.4MB in the end (delta: -489.7MB). Peak memory consumption was 534.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4s, 117 PlacesBefore, 36 PlacesAfterwards, 109 TransitionsBefore, 26 TransitionsAfterwards, 2202 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 94 TotalNumberOfCompositions, 6197 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2315, independent: 2124, independent conditional: 0, independent unconditional: 2124, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1176, independent: 1120, independent conditional: 0, independent unconditional: 1120, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2315, independent: 1004, independent conditional: 0, independent unconditional: 1004, dependent: 135, dependent conditional: 0, dependent unconditional: 135, unknown: 1176, unknown conditional: 0, unknown unconditional: 1176] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: 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, 142 locations, 6 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: 42.0s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 755 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 755 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 439 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4394 IncrementalHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 439 mSolverCounterUnsat, 1 mSDtfsCounter, 4394 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5156occurred in iteration=18, InterpolantAutomatonStates: 134, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 347 NumberOfCodeBlocks, 347 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 5069 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:38:30,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...