/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:09:34,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:09:34,723 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 [2023-08-23 23:09:34,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:09:34,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:09:34,756 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:09:34,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:09:34,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:09:34,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:09:34,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:09:34,761 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:09:34,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:09:34,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:09:34,763 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:09:34,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:09:34,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:09:34,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:09:34,764 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:09:34,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:09:34,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:09:34,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:09:34,765 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:09:34,765 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:09:34,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:09:34,766 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:09:34,766 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:09:34,766 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:09:34,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:09:34,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:09:34,767 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:09:34,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:09:34,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:09:34,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:09:34,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:09:34,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:09:34,769 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:09:35,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:09:35,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:09:35,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:09:35,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:09:35,085 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:09:35,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:09:36,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:09:36,589 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:09:36,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:09:36,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202203cd5/5e228563cf5c4c52849bffc93d939791/FLAG89743c0ad [2023-08-23 23:09:36,612 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/202203cd5/5e228563cf5c4c52849bffc93d939791 [2023-08-23 23:09:36,614 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:09:36,615 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:09:36,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:09:36,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:09:36,619 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:09:36,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:09:36" (1/1) ... [2023-08-23 23:09:36,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a68b1e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:36, skipping insertion in model container [2023-08-23 23:09:36,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:09:36" (1/1) ... [2023-08-23 23:09:36,659 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:09:36,827 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:09:37,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:09:37,021 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:09:37,035 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/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-23 23:09:37,053 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:09:37,055 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:09:37,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:09:37,108 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:09:37,108 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:09:37,114 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:09:37,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37 WrapperNode [2023-08-23 23:09:37,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:09:37,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:09:37,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:09:37,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:09:37,122 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,153 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,175 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-23 23:09:37,176 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:09:37,176 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:09:37,176 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:09:37,177 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:09:37,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,202 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,207 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,212 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:09:37,213 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:09:37,213 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:09:37,213 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:09:37,214 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (1/1) ... [2023-08-23 23:09:37,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:09:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:09:37,250 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) [2023-08-23 23:09:37,272 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 [2023-08-23 23:09:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:09:37,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:09:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:09:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:09:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:09:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:09:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:09:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:09:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:09:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:09:37,292 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:09:37,423 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:09:37,425 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:09:37,548 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:09:37,554 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:09:37,555 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:09:37,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:09:37 BoogieIcfgContainer [2023-08-23 23:09:37,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:09:37,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:09:37,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:09:37,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:09:37,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:09:36" (1/3) ... [2023-08-23 23:09:37,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cad9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:09:37, skipping insertion in model container [2023-08-23 23:09:37,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:09:37" (2/3) ... [2023-08-23 23:09:37,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cad9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:09:37, skipping insertion in model container [2023-08-23 23:09:37,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:09:37" (3/3) ... [2023-08-23 23:09:37,564 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-23 23:09:37,578 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:09:37,578 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:09:37,578 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:09:37,625 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:09:37,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:09:37,688 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-08-23 23:09:37,688 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:09:37,693 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 47 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. [2023-08-23 23:09:37,693 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-08-23 23:09:37,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-08-23 23:09:37,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:09:37,708 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:09:37,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-08-23 23:09:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-08-23 23:09:37,785 INFO L124 PetriNetUnfolderBase]: 1/69 cut-off events. [2023-08-23 23:09:37,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:09:37,787 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 38 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. [2023-08-23 23:09:37,788 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-08-23 23:09:39,571 INFO L134 LiptonReduction]: Checked pairs total: 1927 [2023-08-23 23:09:39,572 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-08-23 23:09:39,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:09:39,590 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d374e21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:09:39,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-23 23:09:39,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:09:39,595 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-23 23:09:39,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:09:39,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:39,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:39,597 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:09:39,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:39,601 INFO L85 PathProgramCache]: Analyzing trace with hash -856294997, now seen corresponding path program 1 times [2023-08-23 23:09:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885477179] [2023-08-23 23:09:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885477179] [2023-08-23 23:09:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885477179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:40,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:09:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732696853] [2023-08-23 23:09:40,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:40,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:09:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:40,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:09:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:09:40,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:09:40,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:40,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:09:40,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:40,287 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-08-23 23:09:40,287 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-23 23:09:40,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 908 events. 562/908 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3966 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1862. Up to 464 conditions per place. [2023-08-23 23:09:40,294 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-23 23:09:40,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-08-23 23:09:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:09:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:09:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-23 23:09:40,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-08-23 23:09:40,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-23 23:09:40,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-23 23:09:40,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:40,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-23 23:09:40,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,321 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) [2023-08-23 23:09:40,321 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) [2023-08-23 23:09:40,323 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-08-23 23:09:40,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-08-23 23:09:40,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:09:40,328 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-08-23 23:09:40,329 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=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-23 23:09:40,335 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-23 23:09:40,335 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-08-23 23:09:40,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:40,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:09:40,336 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)] === [2023-08-23 23:09:40,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash -775341748, now seen corresponding path program 1 times [2023-08-23 23:09:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:40,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352151111] [2023-08-23 23:09:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:40,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:40,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352151111] [2023-08-23 23:09:40,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352151111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:40,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:40,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:09:40,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150058257] [2023-08-23 23:09:40,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:40,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:09:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:09:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:09:40,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:09:40,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:40,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:09:40,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:40,641 INFO L124 PetriNetUnfolderBase]: 521/845 cut-off events. [2023-08-23 23:09:40,642 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-08-23 23:09:40,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2414 conditions, 845 events. 521/845 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3641 event pairs, 63 based on Foata normal form. 7/852 useless extension candidates. Maximal degree in co-relation 2402. Up to 390 conditions per place. [2023-08-23 23:09:40,647 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2023-08-23 23:09:40,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 42 transitions, 244 flow [2023-08-23 23:09:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:09:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:09:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2023-08-23 23:09:40,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5503597122302158 [2023-08-23 23:09:40,650 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 306 transitions. [2023-08-23 23:09:40,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 306 transitions. [2023-08-23 23:09:40,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:40,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 306 transitions. [2023-08-23 23:09:40,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.5) internal successors, (306), 4 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,653 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) [2023-08-23 23:09:40,654 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) [2023-08-23 23:09:40,654 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 306 transitions. [2023-08-23 23:09:40,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 42 transitions, 244 flow [2023-08-23 23:09:40,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:09:40,658 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 138 flow [2023-08-23 23:09:40,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-23 23:09:40,659 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-23 23:09:40,659 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 138 flow [2023-08-23 23:09:40,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:40,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:40,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:09:40,660 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)] === [2023-08-23 23:09:40,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1734208010, now seen corresponding path program 1 times [2023-08-23 23:09:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:40,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291370554] [2023-08-23 23:09:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:40,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:40,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:40,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:40,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291370554] [2023-08-23 23:09:40,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291370554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:40,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:40,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:09:40,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842939613] [2023-08-23 23:09:40,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:40,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:09:40,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:09:40,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:09:40,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:09:40,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:40,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:09:40,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:40,857 INFO L124 PetriNetUnfolderBase]: 493/802 cut-off events. [2023-08-23 23:09:40,858 INFO L125 PetriNetUnfolderBase]: For 762/762 co-relation queries the response was YES. [2023-08-23 23:09:40,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 802 events. 493/802 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3246 event pairs, 104 based on Foata normal form. 9/811 useless extension candidates. Maximal degree in co-relation 2548. Up to 308 conditions per place. [2023-08-23 23:09:40,864 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-08-23 23:09:40,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 304 flow [2023-08-23 23:09:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:09:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:09:40,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 302 transitions. [2023-08-23 23:09:40,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5431654676258992 [2023-08-23 23:09:40,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 302 transitions. [2023-08-23 23:09:40,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 302 transitions. [2023-08-23 23:09:40,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:40,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 302 transitions. [2023-08-23 23:09:40,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,870 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) [2023-08-23 23:09:40,871 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) [2023-08-23 23:09:40,871 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 138 flow. Second operand 4 states and 302 transitions. [2023-08-23 23:09:40,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 304 flow [2023-08-23 23:09:40,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:09:40,877 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 240 flow [2023-08-23 23:09:40,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-23 23:09:40,878 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-08-23 23:09:40,881 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 240 flow [2023-08-23 23:09:40,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:40,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:40,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:09:40,882 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)] === [2023-08-23 23:09:40,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1759548929, now seen corresponding path program 1 times [2023-08-23 23:09:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182767588] [2023-08-23 23:09:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:40,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:41,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182767588] [2023-08-23 23:09:41,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182767588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:41,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:41,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:09:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520784489] [2023-08-23 23:09:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:41,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:09:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:41,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:09:41,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:09:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:09:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:09:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:41,128 INFO L124 PetriNetUnfolderBase]: 478/778 cut-off events. [2023-08-23 23:09:41,129 INFO L125 PetriNetUnfolderBase]: For 1350/1350 co-relation queries the response was YES. [2023-08-23 23:09:41,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 778 events. 478/778 cut-off events. For 1350/1350 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3185 event pairs, 67 based on Foata normal form. 3/781 useless extension candidates. Maximal degree in co-relation 2888. Up to 388 conditions per place. [2023-08-23 23:09:41,135 INFO L140 encePairwiseOnDemand]: 131/139 looper letters, 38 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2023-08-23 23:09:41,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 512 flow [2023-08-23 23:09:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:09:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:09:41,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-23 23:09:41,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593525179856115 [2023-08-23 23:09:41,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-23 23:09:41,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-23 23:09:41,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:41,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-23 23:09:41,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:41,140 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) [2023-08-23 23:09:41,140 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) [2023-08-23 23:09:41,140 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 240 flow. Second operand 4 states and 311 transitions. [2023-08-23 23:09:41,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 512 flow [2023-08-23 23:09:41,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:09:41,147 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 435 flow [2023-08-23 23:09:41,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-23 23:09:41,149 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-08-23 23:09:41,149 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 435 flow [2023-08-23 23:09:41,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:41,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:41,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:41,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:09:41,151 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)] === [2023-08-23 23:09:41,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2074098976, now seen corresponding path program 1 times [2023-08-23 23:09:41,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:41,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115857551] [2023-08-23 23:09:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:41,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:41,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115857551] [2023-08-23 23:09:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115857551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:41,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:41,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:09:41,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570348296] [2023-08-23 23:09:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:41,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:09:41,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:09:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:09:41,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:09:41,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 435 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) [2023-08-23 23:09:41,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:41,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:09:41,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:41,380 INFO L124 PetriNetUnfolderBase]: 557/953 cut-off events. [2023-08-23 23:09:41,380 INFO L125 PetriNetUnfolderBase]: For 3529/3546 co-relation queries the response was YES. [2023-08-23 23:09:41,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 953 events. 557/953 cut-off events. For 3529/3546 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4570 event pairs, 219 based on Foata normal form. 47/997 useless extension candidates. Maximal degree in co-relation 3995. Up to 499 conditions per place. [2023-08-23 23:09:41,387 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 36 selfloop transitions, 9 changer transitions 21/72 dead transitions. [2023-08-23 23:09:41,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 72 transitions, 779 flow [2023-08-23 23:09:41,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:09:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:09:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-23 23:09:41,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-08-23 23:09:41,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:41,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,390 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) [2023-08-23 23:09:41,392 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) [2023-08-23 23:09:41,392 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) [2023-08-23 23:09:41,392 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 435 flow. Second operand 5 states and 394 transitions. [2023-08-23 23:09:41,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 72 transitions, 779 flow [2023-08-23 23:09:41,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 779 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 23:09:41,401 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 459 flow [2023-08-23 23:09:41,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2023-08-23 23:09:41,402 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-08-23 23:09:41,402 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 459 flow [2023-08-23 23:09:41,403 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) [2023-08-23 23:09:41,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:41,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:41,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:09:41,403 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)] === [2023-08-23 23:09:41,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:41,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1118949462, now seen corresponding path program 1 times [2023-08-23 23:09:41,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:41,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146830952] [2023-08-23 23:09:41,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:41,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146830952] [2023-08-23 23:09:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146830952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:41,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:09:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340857355] [2023-08-23 23:09:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:09:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:09:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:09:41,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:09:41,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 459 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) [2023-08-23 23:09:41,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:41,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:09:41,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:41,668 INFO L124 PetriNetUnfolderBase]: 300/570 cut-off events. [2023-08-23 23:09:41,668 INFO L125 PetriNetUnfolderBase]: For 3693/3774 co-relation queries the response was YES. [2023-08-23 23:09:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 570 events. 300/570 cut-off events. For 3693/3774 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2957 event pairs, 44 based on Foata normal form. 82/644 useless extension candidates. Maximal degree in co-relation 2394. Up to 292 conditions per place. [2023-08-23 23:09:41,673 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 63 selfloop transitions, 8 changer transitions 2/89 dead transitions. [2023-08-23 23:09:41,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 89 transitions, 1055 flow [2023-08-23 23:09:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:09:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:09:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-23 23:09:41,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5669064748201439 [2023-08-23 23:09:41,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:41,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-23 23:09:41,677 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) [2023-08-23 23:09:41,679 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) [2023-08-23 23:09:41,679 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) [2023-08-23 23:09:41,680 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 459 flow. Second operand 5 states and 394 transitions. [2023-08-23 23:09:41,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 89 transitions, 1055 flow [2023-08-23 23:09:41,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 1017 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-23 23:09:41,686 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 497 flow [2023-08-23 23:09:41,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=497, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-08-23 23:09:41,689 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-08-23 23:09:41,689 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 497 flow [2023-08-23 23:09:41,690 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) [2023-08-23 23:09:41,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:41,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:09:41,690 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)] === [2023-08-23 23:09:41,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash -328862597, now seen corresponding path program 1 times [2023-08-23 23:09:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137908309] [2023-08-23 23:09:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:41,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137908309] [2023-08-23 23:09:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137908309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:41,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:09:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434488868] [2023-08-23 23:09:41,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:41,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:09:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:09:41,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:09:41,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:09:41,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 497 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) [2023-08-23 23:09:41,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:41,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:09:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:41,947 INFO L124 PetriNetUnfolderBase]: 273/542 cut-off events. [2023-08-23 23:09:41,947 INFO L125 PetriNetUnfolderBase]: For 3183/3375 co-relation queries the response was YES. [2023-08-23 23:09:41,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2719 conditions, 542 events. 273/542 cut-off events. For 3183/3375 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2929 event pairs, 15 based on Foata normal form. 148/682 useless extension candidates. Maximal degree in co-relation 2690. Up to 241 conditions per place. [2023-08-23 23:09:41,952 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 69 selfloop transitions, 15 changer transitions 8/108 dead transitions. [2023-08-23 23:09:41,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 108 transitions, 1271 flow [2023-08-23 23:09:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:09:41,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:09:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 551 transitions. [2023-08-23 23:09:41,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566289825282631 [2023-08-23 23:09:41,955 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 551 transitions. [2023-08-23 23:09:41,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 551 transitions. [2023-08-23 23:09:41,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:41,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 551 transitions. [2023-08-23 23:09:41,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.71428571428571) internal successors, (551), 7 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:41,959 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) [2023-08-23 23:09:41,961 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) [2023-08-23 23:09:41,961 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 497 flow. Second operand 7 states and 551 transitions. [2023-08-23 23:09:41,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 108 transitions, 1271 flow [2023-08-23 23:09:41,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 108 transitions, 1267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:09:41,969 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 592 flow [2023-08-23 23:09:41,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=592, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-23 23:09:41,973 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 31 predicate places. [2023-08-23 23:09:41,974 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 592 flow [2023-08-23 23:09:41,974 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) [2023-08-23 23:09:41,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:41,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:41,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:09:41,976 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)] === [2023-08-23 23:09:41,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:41,977 INFO L85 PathProgramCache]: Analyzing trace with hash 202149215, now seen corresponding path program 1 times [2023-08-23 23:09:41,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:41,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93856164] [2023-08-23 23:09:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:42,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:42,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93856164] [2023-08-23 23:09:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93856164] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:42,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:42,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:09:42,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518353925] [2023-08-23 23:09:42,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:42,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:09:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:09:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:09:42,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 139 [2023-08-23 23:09:42,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:42,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 139 [2023-08-23 23:09:42,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:42,192 INFO L124 PetriNetUnfolderBase]: 377/755 cut-off events. [2023-08-23 23:09:42,192 INFO L125 PetriNetUnfolderBase]: For 4917/4997 co-relation queries the response was YES. [2023-08-23 23:09:42,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 755 events. 377/755 cut-off events. For 4917/4997 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4201 event pairs, 106 based on Foata normal form. 35/778 useless extension candidates. Maximal degree in co-relation 4342. Up to 418 conditions per place. [2023-08-23 23:09:42,197 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 39 selfloop transitions, 7 changer transitions 19/75 dead transitions. [2023-08-23 23:09:42,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 881 flow [2023-08-23 23:09:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:09:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:09:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-23 23:09:42,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851318944844125 [2023-08-23 23:09:42,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-23 23:09:42,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-23 23:09:42,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:42,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-23 23:09:42,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,201 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) [2023-08-23 23:09:42,201 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) [2023-08-23 23:09:42,202 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 592 flow. Second operand 3 states and 244 transitions. [2023-08-23 23:09:42,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 881 flow [2023-08-23 23:09:42,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 75 transitions, 812 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-23 23:09:42,217 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 518 flow [2023-08-23 23:09:42,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-08-23 23:09:42,219 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2023-08-23 23:09:42,219 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 518 flow [2023-08-23 23:09:42,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:42,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:42,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:09:42,220 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)] === [2023-08-23 23:09:42,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:42,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1479944282, now seen corresponding path program 1 times [2023-08-23 23:09:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64857141] [2023-08-23 23:09:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64857141] [2023-08-23 23:09:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64857141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:42,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:42,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:09:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552464099] [2023-08-23 23:09:42,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:42,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:09:42,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:42,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:09:42,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:09:42,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-08-23 23:09:42,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 518 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) [2023-08-23 23:09:42,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:42,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-08-23 23:09:42,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:42,511 INFO L124 PetriNetUnfolderBase]: 190/418 cut-off events. [2023-08-23 23:09:42,511 INFO L125 PetriNetUnfolderBase]: For 2565/2686 co-relation queries the response was YES. [2023-08-23 23:09:42,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 418 events. 190/418 cut-off events. For 2565/2686 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2225 event pairs, 12 based on Foata normal form. 87/495 useless extension candidates. Maximal degree in co-relation 2197. Up to 121 conditions per place. [2023-08-23 23:09:42,514 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 28 selfloop transitions, 12 changer transitions 55/101 dead transitions. [2023-08-23 23:09:42,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 1293 flow [2023-08-23 23:09:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 23:09:42,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 23:09:42,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 688 transitions. [2023-08-23 23:09:42,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5499600319744204 [2023-08-23 23:09:42,516 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 688 transitions. [2023-08-23 23:09:42,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 688 transitions. [2023-08-23 23:09:42,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:42,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 688 transitions. [2023-08-23 23:09:42,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.44444444444444) internal successors, (688), 9 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,521 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 518 flow. Second operand 9 states and 688 transitions. [2023-08-23 23:09:42,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 1293 flow [2023-08-23 23:09:42,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 1257 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-23 23:09:42,529 INFO L231 Difference]: Finished difference. Result has 65 places, 31 transitions, 322 flow [2023-08-23 23:09:42,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=65, PETRI_TRANSITIONS=31} [2023-08-23 23:09:42,530 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 38 predicate places. [2023-08-23 23:09:42,530 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 31 transitions, 322 flow [2023-08-23 23:09:42,530 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) [2023-08-23 23:09:42,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:09:42,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:42,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:09:42,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-23 23:09:42,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:09:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash -422245089, now seen corresponding path program 1 times [2023-08-23 23:09:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:09:42,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595244004] [2023-08-23 23:09:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:09:42,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:09:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:09:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:09:42,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:09:42,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595244004] [2023-08-23 23:09:42,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595244004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:09:42,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:09:42,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:09:42,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388157669] [2023-08-23 23:09:42,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:09:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:09:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:09:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:09:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:09:42,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-08-23 23:09:42,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 31 transitions, 322 flow. Second operand has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:09:42,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-08-23 23:09:42,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:09:42,692 INFO L124 PetriNetUnfolderBase]: 69/158 cut-off events. [2023-08-23 23:09:42,692 INFO L125 PetriNetUnfolderBase]: For 949/949 co-relation queries the response was YES. [2023-08-23 23:09:42,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 158 events. 69/158 cut-off events. For 949/949 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 578 event pairs, 11 based on Foata normal form. 1/159 useless extension candidates. Maximal degree in co-relation 988. Up to 125 conditions per place. [2023-08-23 23:09:42,693 INFO L140 encePairwiseOnDemand]: 136/139 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-08-23 23:09:42,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 38 transitions, 430 flow [2023-08-23 23:09:42,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:09:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:09:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-08-23 23:09:42,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269784172661871 [2023-08-23 23:09:42,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-08-23 23:09:42,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-08-23 23:09:42,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:09:42,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-08-23 23:09:42,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,698 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) [2023-08-23 23:09:42,698 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) [2023-08-23 23:09:42,698 INFO L175 Difference]: Start difference. First operand has 65 places, 31 transitions, 322 flow. Second operand 4 states and 293 transitions. [2023-08-23 23:09:42,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 38 transitions, 430 flow [2023-08-23 23:09:42,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 38 transitions, 307 flow, removed 11 selfloop flow, removed 18 redundant places. [2023-08-23 23:09:42,701 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-23 23:09:42,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-23 23:09:42,703 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-08-23 23:09:42,703 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-23 23:09:42,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.4) internal successors, (352), 5 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:09:42,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-23 23:09:42,705 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-23 23:09:42,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-23 23:09:42,706 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-23 23:09:42,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:09:42,706 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:09:42,709 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:09:42,709 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:09:42,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:09:42 BasicIcfg [2023-08-23 23:09:42,712 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:09:42,713 INFO L158 Benchmark]: Toolchain (without parser) took 6097.19ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 346.1MB in the beginning and 239.1MB in the end (delta: 107.0MB). Peak memory consumption was 184.0MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,713 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 371.2MB. Free memory is still 348.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:09:42,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.64ms. Allocated memory is still 371.2MB. Free memory was 346.1MB in the beginning and 325.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.79ms. Allocated memory is still 371.2MB. Free memory was 325.7MB in the beginning and 323.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,713 INFO L158 Benchmark]: Boogie Preprocessor took 36.13ms. Allocated memory is still 371.2MB. Free memory was 323.7MB in the beginning and 322.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,714 INFO L158 Benchmark]: RCFGBuilder took 343.87ms. Allocated memory is still 371.2MB. Free memory was 322.1MB in the beginning and 308.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,714 INFO L158 Benchmark]: TraceAbstraction took 5153.47ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 307.9MB in the beginning and 239.1MB in the end (delta: 68.8MB). Peak memory consumption was 146.3MB. Max. memory is 16.0GB. [2023-08-23 23:09:42,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 371.2MB. Free memory is still 348.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 498.64ms. Allocated memory is still 371.2MB. Free memory was 346.1MB in the beginning and 325.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.79ms. Allocated memory is still 371.2MB. Free memory was 325.7MB in the beginning and 323.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.13ms. Allocated memory is still 371.2MB. Free memory was 323.7MB in the beginning and 322.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 343.87ms. Allocated memory is still 371.2MB. Free memory was 322.1MB in the beginning and 308.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5153.47ms. Allocated memory was 371.2MB in the beginning and 446.7MB in the end (delta: 75.5MB). Free memory was 307.9MB in the beginning and 239.1MB in the end (delta: 68.8MB). Peak memory consumption was 146.3MB. 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: 1.8s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1927 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1034, independent: 957, independent conditional: 0, independent unconditional: 957, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 558, independent: 537, independent conditional: 0, independent unconditional: 537, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1034, independent: 420, independent conditional: 0, independent unconditional: 420, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 558, unknown conditional: 0, unknown unconditional: 558] , Statistics on independence cache: Total cache size (in pairs): 39, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 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: 5.1s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 153 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 459 IncrementalHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 19 mSDtfsCounter, 459 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=592occurred in iteration=7, InterpolantAutomatonStates: 48, 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, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 523 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2023-08-23 23:09:42,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...