/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/safe011_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:34:48,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:34:48,693 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 05:34:48,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:34:48,700 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:34:48,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:34:48,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:34:48,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:34:48,728 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:34:48,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:34:48,732 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:34:48,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:34:48,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:34:48,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:34:48,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:34:48,735 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:34:48,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:34:48,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:34:48,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:34:48,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:34:48,736 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:34:48,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:34:48,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:48,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:34:48,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:34:48,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:34:48,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:34:48,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:34:48,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:34:48,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:34:48,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:34:49,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:34:49,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:34:49,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:34:49,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:34:49,064 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:34:49,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-24 05:34:50,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:34:50,428 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:34:50,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.i [2023-08-24 05:34:50,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b13b1bd/40148b600b7643ae9c827addf0b01250/FLAG8b1a0498c [2023-08-24 05:34:50,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01b13b1bd/40148b600b7643ae9c827addf0b01250 [2023-08-24 05:34:50,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:34:50,469 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:34:50,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:50,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:34:50,475 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:34:50,476 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:50,477 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d4a08e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50, skipping insertion in model container [2023-08-24 05:34:50,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:50,531 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:34:50,695 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/safe011_tso.i[945,958] [2023-08-24 05:34:50,864 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:50,874 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:34:50,888 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/safe011_tso.i[945,958] [2023-08-24 05:34:50,906 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:50,908 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-24 05:34:50,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:34:50,966 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:50,966 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 05:34:50,972 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:34:50,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50 WrapperNode [2023-08-24 05:34:50,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:34:50,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:50,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:34:50,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:34:50,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:50,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,013 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-24 05:34:51,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:34:51,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:34:51,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:34:51,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:34:51,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,031 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,035 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:34:51,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:34:51,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:34:51,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:34:51,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (1/1) ... [2023-08-24 05:34:51,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:34:51,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:34:51,070 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 05:34:51,072 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 05:34:51,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-24 05:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-24 05:34:51,097 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-24 05:34:51,097 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-24 05:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-24 05:34:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-24 05:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 05:34:51,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:34:51,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:34:51,099 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 05:34:51,222 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:34:51,224 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:34:51,466 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:34:51,472 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:34:51,472 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 05:34:51,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:34:51 BoogieIcfgContainer [2023-08-24 05:34:51,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:34:51,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:34:51,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:34:51,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:34:51,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:34:50" (1/3) ... [2023-08-24 05:34:51,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc69aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:34:51, skipping insertion in model container [2023-08-24 05:34:51,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:34:50" (2/3) ... [2023-08-24 05:34:51,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc69aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:34:51, skipping insertion in model container [2023-08-24 05:34:51,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:34:51" (3/3) ... [2023-08-24 05:34:51,484 INFO L112 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2023-08-24 05:34:51,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:34:51,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:34:51,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:34:51,573 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:34:51,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 05:34:51,665 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-24 05:34:51,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:51,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-08-24 05:34:51,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-24 05:34:51,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-24 05:34:51,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:34:51,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 05:34:51,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-24 05:34:51,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-24 05:34:51,724 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-24 05:34:51,725 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:51,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-24 05:34:51,728 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-24 05:34:53,674 INFO L134 LiptonReduction]: Checked pairs total: 1928 [2023-08-24 05:34:53,675 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-24 05:34:53,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:34:53,691 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;@751db1d7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:34:53,691 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 05:34:53,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:34:53,695 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 05:34:53,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:34:53,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:53,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:53,696 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 05:34:53,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:53,701 INFO L85 PathProgramCache]: Analyzing trace with hash -885043343, now seen corresponding path program 1 times [2023-08-24 05:34:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:53,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494772359] [2023-08-24 05:34:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:54,147 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 05:34:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494772359] [2023-08-24 05:34:54,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494772359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:54,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:34:54,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290925031] [2023-08-24 05:34:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:34:54,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:34:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:34:54,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-08-24 05:34:54,183 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 05:34:54,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:54,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-08-24 05:34:54,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:54,328 INFO L124 PetriNetUnfolderBase]: 408/708 cut-off events. [2023-08-24 05:34:54,328 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 05:34:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 708 events. 408/708 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3518 event pairs, 157 based on Foata normal form. 37/745 useless extension candidates. Maximal degree in co-relation 1420. Up to 382 conditions per place. [2023-08-24 05:34:54,336 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-24 05:34:54,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 133 flow [2023-08-24 05:34:54,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:34:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:34:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-24 05:34:54,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-24 05:34:54,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-24 05:34:54,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-24 05:34:54,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:54,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-24 05:34:54,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,361 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 237 transitions. [2023-08-24 05:34:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 133 flow [2023-08-24 05:34:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:34:54,366 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-08-24 05:34:54,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, 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 05:34:54,371 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-24 05:34:54,371 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-08-24 05:34:54,372 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 05:34:54,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:54,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:34:54,372 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 05:34:54,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1666540412, now seen corresponding path program 1 times [2023-08-24 05:34:54,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17193149] [2023-08-24 05:34:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:54,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:54,564 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 05:34:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:54,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17193149] [2023-08-24 05:34:54,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17193149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:54,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:54,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 05:34:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511683593] [2023-08-24 05:34:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:54,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:34:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:54,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:34:54,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:34:54,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 139 [2023-08-24 05:34:54,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:54,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 139 [2023-08-24 05:34:54,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:54,653 INFO L124 PetriNetUnfolderBase]: 297/553 cut-off events. [2023-08-24 05:34:54,654 INFO L125 PetriNetUnfolderBase]: For 241/242 co-relation queries the response was YES. [2023-08-24 05:34:54,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 553 events. 297/553 cut-off events. For 241/242 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2747 event pairs, 97 based on Foata normal form. 9/558 useless extension candidates. Maximal degree in co-relation 1436. Up to 348 conditions per place. [2023-08-24 05:34:54,662 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-24 05:34:54,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 29 transitions, 160 flow [2023-08-24 05:34:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:34:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:34:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-24 05:34:54,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875299760191847 [2023-08-24 05:34:54,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-24 05:34:54,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-24 05:34:54,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:54,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-24 05:34:54,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,675 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 245 transitions. [2023-08-24 05:34:54,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 29 transitions, 160 flow [2023-08-24 05:34:54,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:34:54,680 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2023-08-24 05:34:54,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-24 05:34:54,681 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-24 05:34:54,683 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2023-08-24 05:34:54,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:54,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:54,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:34:54,691 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 05:34:54,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:54,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1666541156, now seen corresponding path program 1 times [2023-08-24 05:34:54,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:54,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436652013] [2023-08-24 05:34:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:54,832 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 05:34:54,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:54,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436652013] [2023-08-24 05:34:54,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436652013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:54,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:54,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:54,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964493874] [2023-08-24 05:34:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:54,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:54,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:54,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:54,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:54,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-08-24 05:34:54,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 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 05:34:54,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:54,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-08-24 05:34:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:54,951 INFO L124 PetriNetUnfolderBase]: 365/642 cut-off events. [2023-08-24 05:34:54,951 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-24 05:34:54,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 642 events. 365/642 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3101 event pairs, 61 based on Foata normal form. 3/644 useless extension candidates. Maximal degree in co-relation 1652. Up to 304 conditions per place. [2023-08-24 05:34:54,955 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2023-08-24 05:34:54,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 239 flow [2023-08-24 05:34:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-08-24 05:34:54,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-24 05:34:54,957 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-08-24 05:34:54,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-08-24 05:34:54,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:54,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-08-24 05:34:54,958 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 05:34:54,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:54,960 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 4 states and 316 transitions. [2023-08-24 05:34:54,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 239 flow [2023-08-24 05:34:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 43 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:34:54,962 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 136 flow [2023-08-24 05:34:54,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 05:34:54,963 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-24 05:34:54,963 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 136 flow [2023-08-24 05:34:54,963 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 05:34:54,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:54,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:54,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:34:54,964 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 05:34:54,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -123146519, now seen corresponding path program 1 times [2023-08-24 05:34:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:54,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7341008] [2023-08-24 05:34:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:54,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:55,090 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 05:34:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7341008] [2023-08-24 05:34:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7341008] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:55,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:55,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438843505] [2023-08-24 05:34:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:55,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:55,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:55,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:55,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:55,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-08-24 05:34:55,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 136 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 05:34:55,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:55,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-08-24 05:34:55,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:55,199 INFO L124 PetriNetUnfolderBase]: 351/626 cut-off events. [2023-08-24 05:34:55,199 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2023-08-24 05:34:55,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 626 events. 351/626 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3025 event pairs, 46 based on Foata normal form. 3/629 useless extension candidates. Maximal degree in co-relation 1832. Up to 293 conditions per place. [2023-08-24 05:34:55,206 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 35 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-08-24 05:34:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 316 flow [2023-08-24 05:34:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:55,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 315 transitions. [2023-08-24 05:34:55,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665467625899281 [2023-08-24 05:34:55,209 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 315 transitions. [2023-08-24 05:34:55,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 315 transitions. [2023-08-24 05:34:55,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:55,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 315 transitions. [2023-08-24 05:34:55,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,212 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,212 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 136 flow. Second operand 4 states and 315 transitions. [2023-08-24 05:34:55,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 316 flow [2023-08-24 05:34:55,217 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 05:34:55,219 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 240 flow [2023-08-24 05:34:55,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-24 05:34:55,221 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-08-24 05:34:55,221 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 240 flow [2023-08-24 05:34:55,221 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 05:34:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:55,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:34:55,222 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 05:34:55,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 389716013, now seen corresponding path program 1 times [2023-08-24 05:34:55,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:55,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606495223] [2023-08-24 05:34:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:55,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:55,339 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 05:34:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:55,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606495223] [2023-08-24 05:34:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606495223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:55,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:55,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:34:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344817378] [2023-08-24 05:34:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:55,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 139 [2023-08-24 05:34:55,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 240 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 05:34:55,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:55,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 139 [2023-08-24 05:34:55,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:55,446 INFO L124 PetriNetUnfolderBase]: 374/665 cut-off events. [2023-08-24 05:34:55,446 INFO L125 PetriNetUnfolderBase]: For 1128/1128 co-relation queries the response was YES. [2023-08-24 05:34:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 665 events. 374/665 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3303 event pairs, 75 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2238. Up to 295 conditions per place. [2023-08-24 05:34:55,451 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 17 changer transitions 0/51 dead transitions. [2023-08-24 05:34:55,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 391 flow [2023-08-24 05:34:55,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 316 transitions. [2023-08-24 05:34:55,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-24 05:34:55,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 316 transitions. [2023-08-24 05:34:55,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 316 transitions. [2023-08-24 05:34:55,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:55,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 316 transitions. [2023-08-24 05:34:55,454 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 05:34:55,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,456 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 240 flow. Second operand 4 states and 316 transitions. [2023-08-24 05:34:55,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 391 flow [2023-08-24 05:34:55,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 51 transitions, 391 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:34:55,461 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 310 flow [2023-08-24 05:34:55,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-24 05:34:55,461 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-24 05:34:55,462 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 310 flow [2023-08-24 05:34:55,462 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 05:34:55,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:55,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:55,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:34:55,462 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 05:34:55,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 477446011, now seen corresponding path program 1 times [2023-08-24 05:34:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214828884] [2023-08-24 05:34:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:55,589 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 05:34:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214828884] [2023-08-24 05:34:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214828884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:55,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755660330] [2023-08-24 05:34:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:55,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:55,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:55,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 139 [2023-08-24 05:34:55,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:55,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 139 [2023-08-24 05:34:55,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:55,715 INFO L124 PetriNetUnfolderBase]: 440/815 cut-off events. [2023-08-24 05:34:55,716 INFO L125 PetriNetUnfolderBase]: For 2360/2373 co-relation queries the response was YES. [2023-08-24 05:34:55,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 815 events. 440/815 cut-off events. For 2360/2373 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4410 event pairs, 101 based on Foata normal form. 44/857 useless extension candidates. Maximal degree in co-relation 2784. Up to 308 conditions per place. [2023-08-24 05:34:55,720 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 25 selfloop transitions, 4 changer transitions 15/51 dead transitions. [2023-08-24 05:34:55,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 477 flow [2023-08-24 05:34:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 05:34:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 05:34:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 321 transitions. [2023-08-24 05:34:55,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773381294964028 [2023-08-24 05:34:55,722 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 321 transitions. [2023-08-24 05:34:55,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 321 transitions. [2023-08-24 05:34:55,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:55,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 321 transitions. [2023-08-24 05:34:55,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,725 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,725 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 310 flow. Second operand 4 states and 321 transitions. [2023-08-24 05:34:55,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 477 flow [2023-08-24 05:34:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 471 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-24 05:34:55,731 INFO L231 Difference]: Finished difference. Result has 48 places, 27 transitions, 237 flow [2023-08-24 05:34:55,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=237, PETRI_PLACES=48, PETRI_TRANSITIONS=27} [2023-08-24 05:34:55,733 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-08-24 05:34:55,734 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 27 transitions, 237 flow [2023-08-24 05:34:55,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:55,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:34:55,735 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 05:34:55,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash 41386045, now seen corresponding path program 1 times [2023-08-24 05:34:55,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:55,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472110989] [2023-08-24 05:34:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:55,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:55,840 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 05:34:55,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:55,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472110989] [2023-08-24 05:34:55,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472110989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:55,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:55,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:34:55,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104012766] [2023-08-24 05:34:55,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:55,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:34:55,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:55,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:34:55,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:34:55,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:34:55,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 27 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:55,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:34:55,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:55,924 INFO L124 PetriNetUnfolderBase]: 169/357 cut-off events. [2023-08-24 05:34:55,925 INFO L125 PetriNetUnfolderBase]: For 1431/1437 co-relation queries the response was YES. [2023-08-24 05:34:55,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 357 events. 169/357 cut-off events. For 1431/1437 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1759 event pairs, 34 based on Foata normal form. 14/363 useless extension candidates. Maximal degree in co-relation 1287. Up to 208 conditions per place. [2023-08-24 05:34:55,927 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 4 changer transitions 23/59 dead transitions. [2023-08-24 05:34:55,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 579 flow [2023-08-24 05:34:55,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:34:55,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:34:55,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-24 05:34:55,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-08-24 05:34:55,929 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-24 05:34:55,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-24 05:34:55,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:55,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-24 05:34:55,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,931 INFO L175 Difference]: Start difference. First operand has 48 places, 27 transitions, 237 flow. Second operand 5 states and 394 transitions. [2023-08-24 05:34:55,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 579 flow [2023-08-24 05:34:55,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 477 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-24 05:34:55,935 INFO L231 Difference]: Finished difference. Result has 47 places, 28 transitions, 205 flow [2023-08-24 05:34:55,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=28} [2023-08-24 05:34:55,936 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-08-24 05:34:55,936 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 28 transitions, 205 flow [2023-08-24 05:34:55,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:55,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:55,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:55,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:34:55,937 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 05:34:55,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash 924312526, now seen corresponding path program 1 times [2023-08-24 05:34:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:55,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856436251] [2023-08-24 05:34:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:55,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:56,058 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 05:34:56,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:56,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856436251] [2023-08-24 05:34:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856436251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:56,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:56,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:34:56,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221940122] [2023-08-24 05:34:56,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:56,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 05:34:56,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:56,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 05:34:56,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 05:34:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:34:56,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 28 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:56,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:34:56,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:56,137 INFO L124 PetriNetUnfolderBase]: 102/237 cut-off events. [2023-08-24 05:34:56,138 INFO L125 PetriNetUnfolderBase]: For 636/659 co-relation queries the response was YES. [2023-08-24 05:34:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 237 events. 102/237 cut-off events. For 636/659 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1034 event pairs, 12 based on Foata normal form. 21/252 useless extension candidates. Maximal degree in co-relation 955. Up to 134 conditions per place. [2023-08-24 05:34:56,139 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 25 selfloop transitions, 7 changer transitions 19/56 dead transitions. [2023-08-24 05:34:56,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 479 flow [2023-08-24 05:34:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 05:34:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 05:34:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 471 transitions. [2023-08-24 05:34:56,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564748201438849 [2023-08-24 05:34:56,141 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 471 transitions. [2023-08-24 05:34:56,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 471 transitions. [2023-08-24 05:34:56,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:56,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 471 transitions. [2023-08-24 05:34:56,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 78.5) internal successors, (471), 6 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,146 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,146 INFO L175 Difference]: Start difference. First operand has 47 places, 28 transitions, 205 flow. Second operand 6 states and 471 transitions. [2023-08-24 05:34:56,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 479 flow [2023-08-24 05:34:56,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 56 transitions, 435 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-24 05:34:56,149 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 197 flow [2023-08-24 05:34:56,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-24 05:34:56,155 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-08-24 05:34:56,155 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 197 flow [2023-08-24 05:34:56,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:34:56,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:34:56,156 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 05:34:56,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:34:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1050758185, now seen corresponding path program 1 times [2023-08-24 05:34:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:34:56,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792621584] [2023-08-24 05:34:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:34:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:34:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:34:56,303 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 05:34:56,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:34:56,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792621584] [2023-08-24 05:34:56,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792621584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:34:56,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:34:56,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 05:34:56,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674062195] [2023-08-24 05:34:56,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:34:56,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 05:34:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:34:56,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 05:34:56,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 05:34:56,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-24 05:34:56,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:34:56,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-24 05:34:56,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:34:56,370 INFO L124 PetriNetUnfolderBase]: 46/122 cut-off events. [2023-08-24 05:34:56,371 INFO L125 PetriNetUnfolderBase]: For 388/415 co-relation queries the response was YES. [2023-08-24 05:34:56,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 122 events. 46/122 cut-off events. For 388/415 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 421 event pairs, 8 based on Foata normal form. 16/135 useless extension candidates. Maximal degree in co-relation 540. Up to 61 conditions per place. [2023-08-24 05:34:56,371 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-24 05:34:56,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 347 flow [2023-08-24 05:34:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 05:34:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 05:34:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2023-08-24 05:34:56,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2023-08-24 05:34:56,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2023-08-24 05:34:56,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2023-08-24 05:34:56,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:34:56,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2023-08-24 05:34:56,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,377 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 197 flow. Second operand 7 states and 532 transitions. [2023-08-24 05:34:56,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 347 flow [2023-08-24 05:34:56,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 266 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-24 05:34:56,379 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-24 05:34:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-24 05:34:56,380 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-24 05:34:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-24 05:34:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:34:56,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 05:34:56,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 05:34:56,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 05:34:56,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 05:34:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:34:56,384 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:34:56,386 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:34:56,386 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:34:56,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:34:56 BasicIcfg [2023-08-24 05:34:56,389 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:34:56,389 INFO L158 Benchmark]: Toolchain (without parser) took 5920.44ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 389.6MB in the beginning and 305.5MB in the end (delta: 84.1MB). Peak memory consumption was 168.8MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,389 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 415.2MB. Free memory is still 392.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:34:56,390 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.29ms. Allocated memory is still 415.2MB. Free memory was 389.6MB in the beginning and 369.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,390 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.16ms. Allocated memory is still 415.2MB. Free memory was 369.5MB in the beginning and 367.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,390 INFO L158 Benchmark]: Boogie Preprocessor took 21.38ms. Allocated memory is still 415.2MB. Free memory was 367.8MB in the beginning and 365.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,390 INFO L158 Benchmark]: RCFGBuilder took 440.69ms. Allocated memory is still 415.2MB. Free memory was 365.7MB in the beginning and 351.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,391 INFO L158 Benchmark]: TraceAbstraction took 4910.52ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 351.0MB in the beginning and 305.5MB in the end (delta: 45.6MB). Peak memory consumption was 131.1MB. Max. memory is 16.0GB. [2023-08-24 05:34:56,392 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 415.2MB. Free memory is still 392.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 501.29ms. Allocated memory is still 415.2MB. Free memory was 389.6MB in the beginning and 369.5MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.16ms. Allocated memory is still 415.2MB. Free memory was 369.5MB in the beginning and 367.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.38ms. Allocated memory is still 415.2MB. Free memory was 367.8MB in the beginning and 365.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 440.69ms. Allocated memory is still 415.2MB. Free memory was 365.7MB in the beginning and 351.9MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4910.52ms. Allocated memory was 415.2MB in the beginning and 499.1MB in the end (delta: 83.9MB). Free memory was 351.0MB in the beginning and 305.5MB in the end (delta: 45.6MB). Peak memory consumption was 131.1MB. 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: 2.0s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1928 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1242, independent: 1164, independent conditional: 0, independent unconditional: 1164, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 575, independent: 558, independent conditional: 0, independent unconditional: 558, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1242, independent: 606, independent conditional: 0, independent unconditional: 606, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 575, unknown conditional: 0, unknown unconditional: 575] , Statistics on independence cache: Total cache size (in pairs): 50, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 107 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: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 14 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=310occurred in iteration=5, InterpolantAutomatonStates: 40, 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, 1.2s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 05:34:56,412 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...