/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/safe002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:33:40,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:33:40,592 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 05:33:40,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:33:40,599 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:33:40,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:33:40,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:33:40,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:33:40,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:33:40,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:33:40,645 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:33:40,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:33:40,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:33:40,647 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:33:40,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:33:40,647 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:33:40,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:33:40,648 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:33:40,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:33:40,648 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:33:40,649 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:33:40,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:33:40,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:33:40,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:33:40,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:33:40,650 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:33:40,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:33:40,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:33:40,651 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:33:40,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:33:40,652 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:33:40,652 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:33:40,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:33:40,653 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:33:40,653 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:33:40,653 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:33:41,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:33:41,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:33:41,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:33:41,029 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:33:41,029 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:33:41,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-08-24 05:33:42,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:33:42,372 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:33:42,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-08-24 05:33:42,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f543ee644/130c201623f34e408e0122c7b5306e81/FLAGda5f80021 [2023-08-24 05:33:42,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f543ee644/130c201623f34e408e0122c7b5306e81 [2023-08-24 05:33:42,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:33:42,402 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:33:42,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:33:42,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:33:42,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:33:42,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f5f9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42, skipping insertion in model container [2023-08-24 05:33:42,407 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,465 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:33:42,616 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/safe002_tso.i[945,958] [2023-08-24 05:33:42,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:33:42,786 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:33:42,798 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/safe002_tso.i[945,958] [2023-08-24 05:33:42,817 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:33:42,819 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:33:42,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:33:42,883 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:33:42,884 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:33:42,890 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:33:42,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42 WrapperNode [2023-08-24 05:33:42,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:33:42,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:33:42,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:33:42,892 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:33:42,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,949 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-24 05:33:42,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:33:42,950 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:33:42,950 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:33:42,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:33:42,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,978 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,979 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,983 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:33:42,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:33:42,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:33:42,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:33:42,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (1/1) ... [2023-08-24 05:33:42,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:33:43,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:33:43,017 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 05:33:43,021 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 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:33:43,051 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:33:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:33:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:33:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:33:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:33:43,052 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:33:43,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:33:43,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:33:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:33:43,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:33:43,055 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 05:33:43,194 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:33:43,196 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:33:43,399 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:33:43,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:33:43,405 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:33:43,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:33:43 BoogieIcfgContainer [2023-08-24 05:33:43,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:33:43,409 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:33:43,409 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:33:43,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:33:43,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:33:42" (1/3) ... [2023-08-24 05:33:43,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc61d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:33:43, skipping insertion in model container [2023-08-24 05:33:43,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:33:42" (2/3) ... [2023-08-24 05:33:43,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc61d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:33:43, skipping insertion in model container [2023-08-24 05:33:43,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:33:43" (3/3) ... [2023-08-24 05:33:43,415 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2023-08-24 05:33:43,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:33:43,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:33:43,430 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:33:43,490 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:33:43,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:33:43,593 INFO L124 PetriNetUnfolderBase]: 2/82 cut-off events. [2023-08-24 05:33:43,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:33:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:33:43,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 185 flow [2023-08-24 05:33:43,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 70 transitions, 149 flow [2023-08-24 05:33:43,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:33:43,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:33:43,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 70 transitions, 149 flow [2023-08-24 05:33:43,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 70 transitions, 149 flow [2023-08-24 05:33:43,659 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-08-24 05:33:43,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:33:43,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:33:43,662 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:33:45,719 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-24 05:33:45,720 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-24 05:33:45,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:33:45,737 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;@376ea275, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:33:45,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:33:45,742 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:33:45,742 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 05:33:45,743 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:33:45,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:45,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:45,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:45,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:45,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1940031658, now seen corresponding path program 1 times [2023-08-24 05:33:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393839869] [2023-08-24 05:33:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:45,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:46,205 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 05:33:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393839869] [2023-08-24 05:33:46,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393839869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:46,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:46,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:33:46,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246768856] [2023-08-24 05:33:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:33:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:33:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:33:46,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:33:46,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:46,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:33:46,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:46,452 INFO L124 PetriNetUnfolderBase]: 557/896 cut-off events. [2023-08-24 05:33:46,453 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-24 05:33:46,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 896 events. 557/896 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3934 event pairs, 184 based on Foata normal form. 42/938 useless extension candidates. Maximal degree in co-relation 1840. Up to 579 conditions per place. [2023-08-24 05:33:46,464 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-24 05:33:46,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-24 05:33:46,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:33:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:33:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-24 05:33:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2023-08-24 05:33:46,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-24 05:33:46,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-24 05:33:46,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:46,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-24 05:33:46,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,495 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 239 transitions. [2023-08-24 05:33:46,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-24 05:33:46,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:33:46,499 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-24 05:33:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-24 05:33:46,503 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 05:33:46,504 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-24 05:33:46,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:46,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:46,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:33:46,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:46,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash 11438640, now seen corresponding path program 1 times [2023-08-24 05:33:46,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:46,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592736648] [2023-08-24 05:33:46,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:46,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:46,633 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 05:33:46,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:46,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592736648] [2023-08-24 05:33:46,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592736648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:46,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:46,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:33:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849860447] [2023-08-24 05:33:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:46,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:46,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:46,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:46,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:33:46,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:46,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:33:46,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:46,762 INFO L124 PetriNetUnfolderBase]: 508/823 cut-off events. [2023-08-24 05:33:46,763 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2023-08-24 05:33:46,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2246 conditions, 823 events. 508/823 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3406 event pairs, 94 based on Foata normal form. 12/835 useless extension candidates. Maximal degree in co-relation 2234. Up to 443 conditions per place. [2023-08-24 05:33:46,769 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 10 changer transitions 0/41 dead transitions. [2023-08-24 05:33:46,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 236 flow [2023-08-24 05:33:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:33:46,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:33:46,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 314 transitions. [2023-08-24 05:33:46,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567375886524822 [2023-08-24 05:33:46,775 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 314 transitions. [2023-08-24 05:33:46,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 314 transitions. [2023-08-24 05:33:46,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:46,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 314 transitions. [2023-08-24 05:33:46,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.5) internal successors, (314), 4 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 05:33:46,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,781 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,782 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 314 transitions. [2023-08-24 05:33:46,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 236 flow [2023-08-24 05:33:46,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 41 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:33:46,787 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 148 flow [2023-08-24 05:33:46,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-24 05:33:46,788 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 05:33:46,788 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 148 flow [2023-08-24 05:33:46,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:46,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:46,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:46,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:33:46,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:46,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash 354574968, now seen corresponding path program 1 times [2023-08-24 05:33:46,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:46,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556075028] [2023-08-24 05:33:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:46,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:46,908 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 05:33:46,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:46,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556075028] [2023-08-24 05:33:46,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556075028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:46,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:46,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:33:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296605551] [2023-08-24 05:33:46,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:46,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:46,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:46,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:46,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:46,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:33:46,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 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 05:33:46,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:46,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:33:46,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:47,015 INFO L124 PetriNetUnfolderBase]: 486/789 cut-off events. [2023-08-24 05:33:47,015 INFO L125 PetriNetUnfolderBase]: For 658/658 co-relation queries the response was YES. [2023-08-24 05:33:47,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 789 events. 486/789 cut-off events. For 658/658 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3272 event pairs, 109 based on Foata normal form. 8/797 useless extension candidates. Maximal degree in co-relation 2382. Up to 477 conditions per place. [2023-08-24 05:33:47,020 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-08-24 05:33:47,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 316 flow [2023-08-24 05:33:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:33:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:33:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-08-24 05:33:47,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-24 05:33:47,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-08-24 05:33:47,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-08-24 05:33:47,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:47,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-08-24 05:33:47,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,025 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 148 flow. Second operand 4 states and 316 transitions. [2023-08-24 05:33:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 316 flow [2023-08-24 05:33:47,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:33:47,029 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 228 flow [2023-08-24 05:33:47,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-24 05:33:47,030 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:33:47,030 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 228 flow [2023-08-24 05:33:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 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 05:33:47,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:47,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:33:47,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:47,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:47,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1893045014, now seen corresponding path program 1 times [2023-08-24 05:33:47,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:47,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569369868] [2023-08-24 05:33:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:47,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:47,137 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 05:33:47,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:47,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569369868] [2023-08-24 05:33:47,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569369868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:47,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:47,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:33:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621382367] [2023-08-24 05:33:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:47,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:33:47,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:47,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:33:47,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:33:47,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:33:47,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:47,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:33:47,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:47,282 INFO L124 PetriNetUnfolderBase]: 634/1045 cut-off events. [2023-08-24 05:33:47,282 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2023-08-24 05:33:47,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 1045 events. 634/1045 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4691 event pairs, 167 based on Foata normal form. 32/1077 useless extension candidates. Maximal degree in co-relation 3554. Up to 434 conditions per place. [2023-08-24 05:33:47,288 INFO L140 encePairwiseOnDemand]: 134/141 looper letters, 31 selfloop transitions, 9 changer transitions 15/55 dead transitions. [2023-08-24 05:33:47,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 440 flow [2023-08-24 05:33:47,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:33:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:33:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-08-24 05:33:47,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2023-08-24 05:33:47,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-08-24 05:33:47,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-08-24 05:33:47,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:47,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-08-24 05:33:47,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,293 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,293 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 228 flow. Second operand 5 states and 390 transitions. [2023-08-24 05:33:47,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 440 flow [2023-08-24 05:33:47,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:33:47,302 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 187 flow [2023-08-24 05:33:47,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=187, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-08-24 05:33:47,303 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-24 05:33:47,304 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 187 flow [2023-08-24 05:33:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:47,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:33:47,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:47,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:47,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1076483159, now seen corresponding path program 1 times [2023-08-24 05:33:47,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:47,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807718006] [2023-08-24 05:33:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:47,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:47,436 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 05:33:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:47,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807718006] [2023-08-24 05:33:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807718006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:47,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:33:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578591381] [2023-08-24 05:33:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:47,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 141 [2023-08-24 05:33:47,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:47,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 141 [2023-08-24 05:33:47,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:47,528 INFO L124 PetriNetUnfolderBase]: 335/574 cut-off events. [2023-08-24 05:33:47,528 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2023-08-24 05:33:47,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 574 events. 335/574 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2338 event pairs, 89 based on Foata normal form. 24/598 useless extension candidates. Maximal degree in co-relation 1982. Up to 312 conditions per place. [2023-08-24 05:33:47,532 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 27 selfloop transitions, 7 changer transitions 1/35 dead transitions. [2023-08-24 05:33:47,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 35 transitions, 283 flow [2023-08-24 05:33:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:33:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:33:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-08-24 05:33:47,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5443262411347518 [2023-08-24 05:33:47,534 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-08-24 05:33:47,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-08-24 05:33:47,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:47,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-08-24 05:33:47,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,538 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 187 flow. Second operand 4 states and 307 transitions. [2023-08-24 05:33:47,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 35 transitions, 283 flow [2023-08-24 05:33:47,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 225 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-24 05:33:47,543 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 143 flow [2023-08-24 05:33:47,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-24 05:33:47,546 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:33:47,546 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 143 flow [2023-08-24 05:33:47,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:47,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:47,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:33:47,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:47,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1893078494, now seen corresponding path program 2 times [2023-08-24 05:33:47,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922452256] [2023-08-24 05:33:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:47,641 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 05:33:47,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:47,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922452256] [2023-08-24 05:33:47,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922452256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:47,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:47,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:33:47,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18761121] [2023-08-24 05:33:47,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:47,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:47,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:47,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:47,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:47,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:33:47,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:47,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:33:47,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:47,735 INFO L124 PetriNetUnfolderBase]: 286/515 cut-off events. [2023-08-24 05:33:47,735 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-24 05:33:47,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 515 events. 286/515 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2293 event pairs, 97 based on Foata normal form. 24/524 useless extension candidates. Maximal degree in co-relation 1535. Up to 283 conditions per place. [2023-08-24 05:33:47,738 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 23 selfloop transitions, 4 changer transitions 8/37 dead transitions. [2023-08-24 05:33:47,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 267 flow [2023-08-24 05:33:47,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:33:47,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:33:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2023-08-24 05:33:47,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2023-08-24 05:33:47,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 318 transitions. [2023-08-24 05:33:47,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 318 transitions. [2023-08-24 05:33:47,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:47,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 318 transitions. [2023-08-24 05:33:47,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,742 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 143 flow. Second operand 4 states and 318 transitions. [2023-08-24 05:33:47,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 267 flow [2023-08-24 05:33:47,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:33:47,746 INFO L231 Difference]: Finished difference. Result has 39 places, 22 transitions, 128 flow [2023-08-24 05:33:47,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2023-08-24 05:33:47,746 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-08-24 05:33:47,746 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 128 flow [2023-08-24 05:33:47,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:47,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:33:47,747 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:47,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash 586760631, now seen corresponding path program 1 times [2023-08-24 05:33:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385757183] [2023-08-24 05:33:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:47,821 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 05:33:47,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:47,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385757183] [2023-08-24 05:33:47,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385757183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:47,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:47,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:33:47,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435725367] [2023-08-24 05:33:47,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:47,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:47,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:47,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:33:47,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:47,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:33:47,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:47,895 INFO L124 PetriNetUnfolderBase]: 161/300 cut-off events. [2023-08-24 05:33:47,895 INFO L125 PetriNetUnfolderBase]: For 380/380 co-relation queries the response was YES. [2023-08-24 05:33:47,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 300 events. 161/300 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1093 event pairs, 47 based on Foata normal form. 12/312 useless extension candidates. Maximal degree in co-relation 934. Up to 99 conditions per place. [2023-08-24 05:33:47,897 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 18 selfloop transitions, 2 changer transitions 14/35 dead transitions. [2023-08-24 05:33:47,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 224 flow [2023-08-24 05:33:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:33:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:33:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2023-08-24 05:33:47,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2023-08-24 05:33:47,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2023-08-24 05:33:47,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2023-08-24 05:33:47,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:47,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2023-08-24 05:33:47,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,902 INFO L175 Difference]: Start difference. First operand has 39 places, 22 transitions, 128 flow. Second operand 5 states and 393 transitions. [2023-08-24 05:33:47,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 224 flow [2023-08-24 05:33:47,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 202 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-24 05:33:47,907 INFO L231 Difference]: Finished difference. Result has 38 places, 17 transitions, 74 flow [2023-08-24 05:33:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=17} [2023-08-24 05:33:47,909 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:33:47,909 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 17 transitions, 74 flow [2023-08-24 05:33:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:47,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:47,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:47,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:33:47,911 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:47,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1056294549, now seen corresponding path program 2 times [2023-08-24 05:33:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:47,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449062112] [2023-08-24 05:33:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:48,044 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 05:33:48,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:48,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449062112] [2023-08-24 05:33:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449062112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:48,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:33:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703869397] [2023-08-24 05:33:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:48,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:48,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:48,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:48,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:48,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:33:48,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 17 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:48,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:33:48,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:48,100 INFO L124 PetriNetUnfolderBase]: 54/118 cut-off events. [2023-08-24 05:33:48,100 INFO L125 PetriNetUnfolderBase]: For 223/227 co-relation queries the response was YES. [2023-08-24 05:33:48,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 118 events. 54/118 cut-off events. For 223/227 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 375 event pairs, 18 based on Foata normal form. 11/124 useless extension candidates. Maximal degree in co-relation 327. Up to 71 conditions per place. [2023-08-24 05:33:48,101 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 17 selfloop transitions, 4 changer transitions 12/36 dead transitions. [2023-08-24 05:33:48,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 201 flow [2023-08-24 05:33:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:33:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:33:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 395 transitions. [2023-08-24 05:33:48,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-24 05:33:48,103 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 395 transitions. [2023-08-24 05:33:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 395 transitions. [2023-08-24 05:33:48,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:48,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 395 transitions. [2023-08-24 05:33:48,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,106 INFO L175 Difference]: Start difference. First operand has 38 places, 17 transitions, 74 flow. Second operand 5 states and 395 transitions. [2023-08-24 05:33:48,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 201 flow [2023-08-24 05:33:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 172 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-24 05:33:48,108 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 90 flow [2023-08-24 05:33:48,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-08-24 05:33:48,110 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-08-24 05:33:48,110 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 90 flow [2023-08-24 05:33:48,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:48,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:48,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:33:48,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:48,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash 795695817, now seen corresponding path program 1 times [2023-08-24 05:33:48,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:48,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508914322] [2023-08-24 05:33:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:48,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:48,237 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 05:33:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508914322] [2023-08-24 05:33:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508914322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:48,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:33:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349051288] [2023-08-24 05:33:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:48,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:33:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:48,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:33:48,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:33:48,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:33:48,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:48,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:33:48,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:48,296 INFO L124 PetriNetUnfolderBase]: 32/81 cut-off events. [2023-08-24 05:33:48,296 INFO L125 PetriNetUnfolderBase]: For 137/146 co-relation queries the response was YES. [2023-08-24 05:33:48,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 81 events. 32/81 cut-off events. For 137/146 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 207 event pairs, 5 based on Foata normal form. 11/89 useless extension candidates. Maximal degree in co-relation 287. Up to 48 conditions per place. [2023-08-24 05:33:48,297 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 18 selfloop transitions, 7 changer transitions 10/38 dead transitions. [2023-08-24 05:33:48,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 250 flow [2023-08-24 05:33:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:33:48,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:33:48,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 469 transitions. [2023-08-24 05:33:48,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543735224586288 [2023-08-24 05:33:48,299 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 469 transitions. [2023-08-24 05:33:48,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 469 transitions. [2023-08-24 05:33:48,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:48,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 469 transitions. [2023-08-24 05:33:48,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 141.0) internal successors, (987), 7 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,302 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 90 flow. Second operand 6 states and 469 transitions. [2023-08-24 05:33:48,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 250 flow [2023-08-24 05:33:48,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 05:33:48,304 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 140 flow [2023-08-24 05:33:48,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-08-24 05:33:48,305 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:33:48,305 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 140 flow [2023-08-24 05:33:48,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:48,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:48,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:33:48,306 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:48,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:48,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1103235489, now seen corresponding path program 1 times [2023-08-24 05:33:48,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:48,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045162685] [2023-08-24 05:33:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:48,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:48,455 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 05:33:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045162685] [2023-08-24 05:33:48,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045162685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:48,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:48,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:33:48,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382912542] [2023-08-24 05:33:48,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:48,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:33:48,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:48,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:33:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:33:48,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 141 [2023-08-24 05:33:48,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:48,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 141 [2023-08-24 05:33:48,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:48,504 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-08-24 05:33:48,505 INFO L125 PetriNetUnfolderBase]: For 156/175 co-relation queries the response was YES. [2023-08-24 05:33:48,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 52 events. 17/52 cut-off events. For 156/175 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 2 based on Foata normal form. 12/62 useless extension candidates. Maximal degree in co-relation 207. Up to 28 conditions per place. [2023-08-24 05:33:48,505 INFO L140 encePairwiseOnDemand]: 135/141 looper letters, 15 selfloop transitions, 10 changer transitions 5/33 dead transitions. [2023-08-24 05:33:48,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 260 flow [2023-08-24 05:33:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:33:48,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:33:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 536 transitions. [2023-08-24 05:33:48,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5430597771023303 [2023-08-24 05:33:48,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 536 transitions. [2023-08-24 05:33:48,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 536 transitions. [2023-08-24 05:33:48,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:48,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 536 transitions. [2023-08-24 05:33:48,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 141.0) internal successors, (1128), 8 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,512 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 140 flow. Second operand 7 states and 536 transitions. [2023-08-24 05:33:48,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 260 flow [2023-08-24 05:33:48,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 222 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-24 05:33:48,514 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 140 flow [2023-08-24 05:33:48,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-08-24 05:33:48,515 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-08-24 05:33:48,515 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 140 flow [2023-08-24 05:33:48,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:33:48,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:48,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:33:48,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:33:48,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:33:48,516 INFO L85 PathProgramCache]: Analyzing trace with hash 220754768, now seen corresponding path program 1 times [2023-08-24 05:33:48,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:33:48,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194245467] [2023-08-24 05:33:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:33:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:33:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:33:48,622 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 05:33:48,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:33:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194245467] [2023-08-24 05:33:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194245467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:33:48,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:33:48,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:33:48,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302200190] [2023-08-24 05:33:48,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:33:48,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:33:48,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:33:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:33:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:33:48,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 141 [2023-08-24 05:33:48,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:33:48,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 141 [2023-08-24 05:33:48,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:33:48,663 INFO L124 PetriNetUnfolderBase]: 21/55 cut-off events. [2023-08-24 05:33:48,663 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-08-24 05:33:48,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 55 events. 21/55 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 4 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 210. Up to 35 conditions per place. [2023-08-24 05:33:48,663 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-08-24 05:33:48,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 28 transitions, 220 flow [2023-08-24 05:33:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:33:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:33:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-08-24 05:33:48,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049645390070922 [2023-08-24 05:33:48,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-08-24 05:33:48,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-08-24 05:33:48,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:33:48,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-08-24 05:33:48,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,669 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 140 flow. Second operand 5 states and 356 transitions. [2023-08-24 05:33:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 28 transitions, 220 flow [2023-08-24 05:33:48,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 28 transitions, 180 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-24 05:33:48,670 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-24 05:33:48,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-24 05:33:48,670 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-24 05:33:48,671 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-24 05:33:48,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:33:48,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:33:48,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:33:48,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:33:48,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:33:48,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 05:33:48,674 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:33:48,676 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:33:48,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:33:48,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:33:48 BasicIcfg [2023-08-24 05:33:48,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:33:48,682 INFO L158 Benchmark]: Toolchain (without parser) took 6280.02ms. Allocated memory was 333.4MB in the beginning and 434.1MB in the end (delta: 100.7MB). Free memory was 308.2MB in the beginning and 180.5MB in the end (delta: 127.7MB). Peak memory consumption was 229.9MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,682 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 333.4MB. Free memory was 310.9MB in the beginning and 310.7MB in the end (delta: 249.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:33:48,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.05ms. Allocated memory is still 333.4MB. Free memory was 308.2MB in the beginning and 287.7MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.07ms. Allocated memory is still 333.4MB. Free memory was 287.7MB in the beginning and 285.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,682 INFO L158 Benchmark]: Boogie Preprocessor took 33.58ms. Allocated memory is still 333.4MB. Free memory was 285.7MB in the beginning and 284.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,683 INFO L158 Benchmark]: RCFGBuilder took 423.25ms. Allocated memory is still 333.4MB. Free memory was 284.1MB in the beginning and 270.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,683 INFO L158 Benchmark]: TraceAbstraction took 5271.91ms. Allocated memory was 333.4MB in the beginning and 434.1MB in the end (delta: 100.7MB). Free memory was 269.4MB in the beginning and 180.5MB in the end (delta: 88.9MB). Peak memory consumption was 192.1MB. Max. memory is 16.0GB. [2023-08-24 05:33:48,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 333.4MB. Free memory was 310.9MB in the beginning and 310.7MB in the end (delta: 249.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 488.05ms. Allocated memory is still 333.4MB. Free memory was 308.2MB in the beginning and 287.7MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.07ms. Allocated memory is still 333.4MB. Free memory was 287.7MB in the beginning and 285.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.58ms. Allocated memory is still 333.4MB. Free memory was 285.7MB in the beginning and 284.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 423.25ms. Allocated memory is still 333.4MB. Free memory was 284.1MB in the beginning and 270.4MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5271.91ms. Allocated memory was 333.4MB in the beginning and 434.1MB in the end (delta: 100.7MB). Free memory was 269.4MB in the beginning and 180.5MB in the end (delta: 88.9MB). Peak memory consumption was 192.1MB. 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: 2.1s, 79 PlacesBefore, 27 PlacesAfterwards, 70 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1177, independent: 1100, independent conditional: 0, independent unconditional: 1100, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 572, independent: 549, independent conditional: 0, independent unconditional: 549, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1177, independent: 551, independent conditional: 0, independent unconditional: 551, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 572, unknown conditional: 0, unknown unconditional: 572] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 177 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 468 IncrementalHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 25 mSDtfsCounter, 468 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=228occurred in iteration=3, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:33:48,704 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...