/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 11:13:41,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 11:13:41,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 11:13:41,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 11:13:41,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 11:13:41,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 11:13:41,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 11:13:41,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 11:13:41,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 11:13:41,274 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 11:13:41,275 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 11:13:41,275 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 11:13:41,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 11:13:41,276 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 11:13:41,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 11:13:41,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 11:13:41,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 11:13:41,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 11:13:41,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 11:13:41,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 11:13:41,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 11:13:41,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 11:13:41,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 11:13:41,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 11:13:41,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 11:13:41,278 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 11:13:41,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 11:13:41,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:41,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 11:13:41,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 11:13:41,280 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 11:13:41,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 11:13:41,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 11:13:41,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 11:13:41,517 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 11:13:41,518 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 11:13:41,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-24 11:13:42,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 11:13:42,578 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 11:13:42,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-24 11:13:42,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0fc04c6/1dcd4b3cf93a426eb34a9e59ce9776b3/FLAG01cc03a6c [2023-08-24 11:13:42,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab0fc04c6/1dcd4b3cf93a426eb34a9e59ce9776b3 [2023-08-24 11:13:42,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 11:13:42,606 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 11:13:42,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:42,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 11:13:42,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 11:13:42,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:42,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f8697a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42, skipping insertion in model container [2023-08-24 11:13:42,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:42,648 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 11:13:42,893 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/triangular-longer-2.i[30963,30976] [2023-08-24 11:13:42,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:42,900 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 11:13:42,922 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 11:13:42,923 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 11:13:42,932 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/triangular-longer-2.i[30963,30976] [2023-08-24 11:13:42,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 11:13:42,955 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:13:42,955 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 11:13:42,960 INFO L206 MainTranslator]: Completed translation [2023-08-24 11:13:42,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42 WrapperNode [2023-08-24 11:13:42,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 11:13:42,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:42,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 11:13:42,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 11:13:42,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:42,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:42,990 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-08-24 11:13:42,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 11:13:42,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 11:13:42,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 11:13:42,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 11:13:42,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:42,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,011 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 11:13:43,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 11:13:43,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 11:13:43,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 11:13:43,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (1/1) ... [2023-08-24 11:13:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 11:13:43,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:43,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 11:13:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 11:13:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 11:13:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 11:13:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 11:13:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 11:13:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 11:13:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 11:13:43,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 11:13:43,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 11:13:43,077 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 11:13:43,156 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 11:13:43,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 11:13:43,249 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 11:13:43,253 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 11:13:43,253 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 11:13:43,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:43 BoogieIcfgContainer [2023-08-24 11:13:43,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 11:13:43,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 11:13:43,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 11:13:43,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 11:13:43,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 11:13:42" (1/3) ... [2023-08-24 11:13:43,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f10c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:43, skipping insertion in model container [2023-08-24 11:13:43,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 11:13:42" (2/3) ... [2023-08-24 11:13:43,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f10c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 11:13:43, skipping insertion in model container [2023-08-24 11:13:43,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 11:13:43" (3/3) ... [2023-08-24 11:13:43,259 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-24 11:13:43,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 11:13:43,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 11:13:43,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 11:13:43,306 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 11:13:43,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 146 flow [2023-08-24 11:13:43,379 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-08-24 11:13:43,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:43,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-24 11:13:43,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 68 transitions, 146 flow [2023-08-24 11:13:43,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:43,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 11:13:43,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:43,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 138 flow [2023-08-24 11:13:43,434 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-08-24 11:13:43,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:43,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-24 11:13:43,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 1200 [2023-08-24 11:13:44,873 INFO L134 LiptonReduction]: Checked pairs total: 1095 [2023-08-24 11:13:44,873 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-24 11:13:44,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 11:13:44,890 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;@394e61cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 11:13:44,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 11:13:44,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 11:13:44,895 INFO L124 PetriNetUnfolderBase]: 3/13 cut-off events. [2023-08-24 11:13:44,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 11:13:44,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 11:13:44,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:44,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:44,899 INFO L85 PathProgramCache]: Analyzing trace with hash -541533417, now seen corresponding path program 1 times [2023-08-24 11:13:44,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:44,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077406829] [2023-08-24 11:13:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:44,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077406829] [2023-08-24 11:13:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077406829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:45,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 11:13:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589303564] [2023-08-24 11:13:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:45,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 11:13:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 11:13:45,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 11:13:45,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:45,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:45,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:45,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:45,258 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-08-24 11:13:45,258 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 11:13:45,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 396 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-08-24 11:13:45,260 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-08-24 11:13:45,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-08-24 11:13:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 11:13:45,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 11:13:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 241 transitions. [2023-08-24 11:13:45,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470703125 [2023-08-24 11:13:45,272 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 241 transitions. [2023-08-24 11:13:45,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 241 transitions. [2023-08-24 11:13:45,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:45,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 241 transitions. [2023-08-24 11:13:45,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,290 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,292 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 241 transitions. [2023-08-24 11:13:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-08-24 11:13:45,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 11:13:45,294 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-24 11:13:45,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-24 11:13:45,298 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-08-24 11:13:45,298 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-24 11:13:45,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:45,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:45,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 11:13:45,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:45,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash -722991115, now seen corresponding path program 1 times [2023-08-24 11:13:45,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:45,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508920464] [2023-08-24 11:13:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:45,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:45,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508920464] [2023-08-24 11:13:45,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508920464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:45,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:45,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:13:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512569634] [2023-08-24 11:13:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:13:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:13:45,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:13:45,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:45,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:45,533 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-08-24 11:13:45,534 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-24 11:13:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-08-24 11:13:45,535 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-24 11:13:45,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-08-24 11:13:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 11:13:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 11:13:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2023-08-24 11:13:45,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2023-08-24 11:13:45,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2023-08-24 11:13:45,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2023-08-24 11:13:45,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:45,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2023-08-24 11:13:45,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,545 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 356 transitions. [2023-08-24 11:13:45,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-08-24 11:13:45,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 11:13:45,547 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-08-24 11:13:45,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-24 11:13:45,547 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-08-24 11:13:45,548 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-08-24 11:13:45,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:45,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 11:13:45,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:45,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash -722976235, now seen corresponding path program 2 times [2023-08-24 11:13:45,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:45,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028710799] [2023-08-24 11:13:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:45,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028710799] [2023-08-24 11:13:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028710799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:45,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 11:13:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826872650] [2023-08-24 11:13:45,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 11:13:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 11:13:45,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 11:13:45,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:45,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:45,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:45,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:45,737 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-24 11:13:45,738 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-24 11:13:45,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 635 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-08-24 11:13:45,742 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-08-24 11:13:45,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-08-24 11:13:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 11:13:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 11:13:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-08-24 11:13:45,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465625 [2023-08-24 11:13:45,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-08-24 11:13:45,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-08-24 11:13:45,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:45,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-08-24 11:13:45,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,747 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 298 transitions. [2023-08-24 11:13:45,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-08-24 11:13:45,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 11:13:45,749 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-08-24 11:13:45,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-24 11:13:45,750 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-08-24 11:13:45,750 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-08-24 11:13:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.6) internal successors, (273), 5 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:45,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:45,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 11:13:45,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:45,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1288679532, now seen corresponding path program 1 times [2023-08-24 11:13:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:45,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702844638] [2023-08-24 11:13:45,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:45,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:45,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:45,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702844638] [2023-08-24 11:13:45,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702844638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:45,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:45,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:45,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080890936] [2023-08-24 11:13:45,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:45,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:45,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:45,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:45,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:45,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:45,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:45,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:45,919 INFO L124 PetriNetUnfolderBase]: 136/239 cut-off events. [2023-08-24 11:13:45,919 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2023-08-24 11:13:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 796 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2023-08-24 11:13:45,920 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-08-24 11:13:45,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2023-08-24 11:13:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 11:13:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 11:13:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 412 transitions. [2023-08-24 11:13:45,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2023-08-24 11:13:45,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 412 transitions. [2023-08-24 11:13:45,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 412 transitions. [2023-08-24 11:13:45,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:45,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 412 transitions. [2023-08-24 11:13:45,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 58.857142857142854) internal successors, (412), 7 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,925 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 412 transitions. [2023-08-24 11:13:45,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2023-08-24 11:13:45,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:45,928 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2023-08-24 11:13:45,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-24 11:13:45,929 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2023-08-24 11:13:45,929 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2023-08-24 11:13:45,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:45,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:45,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:45,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 11:13:45,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:45,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1288779972, now seen corresponding path program 2 times [2023-08-24 11:13:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167542965] [2023-08-24 11:13:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:46,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167542965] [2023-08-24 11:13:46,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167542965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:46,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:46,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:46,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5956166] [2023-08-24 11:13:46,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:46,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:46,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:46,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:46,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:46,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:46,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:46,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:46,118 INFO L124 PetriNetUnfolderBase]: 172/303 cut-off events. [2023-08-24 11:13:46,119 INFO L125 PetriNetUnfolderBase]: For 787/787 co-relation queries the response was YES. [2023-08-24 11:13:46,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1059 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2023-08-24 11:13:46,120 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-08-24 11:13:46,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2023-08-24 11:13:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:13:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:13:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 470 transitions. [2023-08-24 11:13:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458984375 [2023-08-24 11:13:46,122 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 470 transitions. [2023-08-24 11:13:46,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 470 transitions. [2023-08-24 11:13:46,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:46,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 470 transitions. [2023-08-24 11:13:46,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.75) internal successors, (470), 8 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,124 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,124 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 470 transitions. [2023-08-24 11:13:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2023-08-24 11:13:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 11:13:46,127 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2023-08-24 11:13:46,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-24 11:13:46,128 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2023-08-24 11:13:46,128 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2023-08-24 11:13:46,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:46,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:46,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 11:13:46,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:46,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1319181672, now seen corresponding path program 3 times [2023-08-24 11:13:46,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522933672] [2023-08-24 11:13:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:46,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522933672] [2023-08-24 11:13:46,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522933672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 11:13:46,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 11:13:46,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 11:13:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205070628] [2023-08-24 11:13:46,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 11:13:46,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 11:13:46,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:46,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 11:13:46,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 11:13:46,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:46,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:46,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:46,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:46,273 INFO L124 PetriNetUnfolderBase]: 168/295 cut-off events. [2023-08-24 11:13:46,273 INFO L125 PetriNetUnfolderBase]: For 1394/1394 co-relation queries the response was YES. [2023-08-24 11:13:46,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 295 events. 168/295 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1052 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1299. Up to 71 conditions per place. [2023-08-24 11:13:46,274 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2023-08-24 11:13:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 651 flow [2023-08-24 11:13:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 11:13:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 11:13:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 469 transitions. [2023-08-24 11:13:46,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580078125 [2023-08-24 11:13:46,276 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 469 transitions. [2023-08-24 11:13:46,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 469 transitions. [2023-08-24 11:13:46,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:46,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 469 transitions. [2023-08-24 11:13:46,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.625) internal successors, (469), 8 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,278 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,278 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 8 states and 469 transitions. [2023-08-24 11:13:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 651 flow [2023-08-24 11:13:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 617 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-24 11:13:46,284 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 476 flow [2023-08-24 11:13:46,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-24 11:13:46,284 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-08-24 11:13:46,284 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 476 flow [2023-08-24 11:13:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:46,285 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:46,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 11:13:46,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:46,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1279483931, now seen corresponding path program 4 times [2023-08-24 11:13:46,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006302458] [2023-08-24 11:13:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:46,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:46,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006302458] [2023-08-24 11:13:46,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006302458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:46,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076524627] [2023-08-24 11:13:46,351 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 11:13:46,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:46,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:46,354 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:46,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 11:13:46,420 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 11:13:46,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:46,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 11:13:46,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076524627] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:46,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:46,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-24 11:13:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17230499] [2023-08-24 11:13:46,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:46,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 11:13:46,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 11:13:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-24 11:13:46,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:46,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 54.833333333333336) internal successors, (658), 12 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:46,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:46,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:46,699 INFO L124 PetriNetUnfolderBase]: 192/343 cut-off events. [2023-08-24 11:13:46,700 INFO L125 PetriNetUnfolderBase]: For 2705/2705 co-relation queries the response was YES. [2023-08-24 11:13:46,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 343 events. 192/343 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1217 event pairs, 39 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1662. Up to 181 conditions per place. [2023-08-24 11:13:46,702 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2023-08-24 11:13:46,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 916 flow [2023-08-24 11:13:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 11:13:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 11:13:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 701 transitions. [2023-08-24 11:13:46,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563802083333333 [2023-08-24 11:13:46,706 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 701 transitions. [2023-08-24 11:13:46,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 701 transitions. [2023-08-24 11:13:46,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:46,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 701 transitions. [2023-08-24 11:13:46,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 58.416666666666664) internal successors, (701), 12 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,710 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 128.0) internal successors, (1664), 13 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,710 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 476 flow. Second operand 12 states and 701 transitions. [2023-08-24 11:13:46,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 916 flow [2023-08-24 11:13:46,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 861 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-24 11:13:46,717 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 586 flow [2023-08-24 11:13:46,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=586, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-08-24 11:13:46,717 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-08-24 11:13:46,717 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 586 flow [2023-08-24 11:13:46,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.833333333333336) internal successors, (658), 12 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:46,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:46,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:46,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:46,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:46,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:46,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1293783611, now seen corresponding path program 5 times [2023-08-24 11:13:46,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866485437] [2023-08-24 11:13:46,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:46,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:46,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866485437] [2023-08-24 11:13:46,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866485437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:46,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384420155] [2023-08-24 11:13:46,992 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 11:13:46,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:46,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:46,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:46,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 11:13:47,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 11:13:47,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:47,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 11:13:47,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:47,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:47,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384420155] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:47,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:47,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 11:13:47,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202372185] [2023-08-24 11:13:47,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:47,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 11:13:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 11:13:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-24 11:13:47,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:47,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 54.84615384615385) internal successors, (713), 13 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:47,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:47,413 INFO L124 PetriNetUnfolderBase]: 254/459 cut-off events. [2023-08-24 11:13:47,413 INFO L125 PetriNetUnfolderBase]: For 7024/7024 co-relation queries the response was YES. [2023-08-24 11:13:47,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 459 events. 254/459 cut-off events. For 7024/7024 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1808 event pairs, 30 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2577. Up to 131 conditions per place. [2023-08-24 11:13:47,415 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2023-08-24 11:13:47,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1453 flow [2023-08-24 11:13:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 11:13:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 11:13:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1051 transitions. [2023-08-24 11:13:47,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4561631944444444 [2023-08-24 11:13:47,418 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1051 transitions. [2023-08-24 11:13:47,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1051 transitions. [2023-08-24 11:13:47,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:47,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1051 transitions. [2023-08-24 11:13:47,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.388888888888886) internal successors, (1051), 18 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,423 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,423 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 586 flow. Second operand 18 states and 1051 transitions. [2023-08-24 11:13:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1453 flow [2023-08-24 11:13:47,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1310 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-24 11:13:47,432 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 944 flow [2023-08-24 11:13:47,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=944, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2023-08-24 11:13:47,432 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 73 predicate places. [2023-08-24 11:13:47,432 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 944 flow [2023-08-24 11:13:47,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.84615384615385) internal successors, (713), 13 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:47,433 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:47,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:47,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-24 11:13:47,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:47,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:47,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1566987944, now seen corresponding path program 6 times [2023-08-24 11:13:47,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:47,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903816678] [2023-08-24 11:13:47,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:47,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903816678] [2023-08-24 11:13:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903816678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420160483] [2023-08-24 11:13:47,724 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 11:13:47,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:47,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:47,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 11:13:47,773 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 11:13:47,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:47,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 11:13:47,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:47,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:47,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420160483] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:47,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 11:13:47,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373142082] [2023-08-24 11:13:47,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:47,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 11:13:47,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:47,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 11:13:47,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-24 11:13:47,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:47,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 944 flow. Second operand has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:47,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:47,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:47,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:48,124 INFO L124 PetriNetUnfolderBase]: 338/619 cut-off events. [2023-08-24 11:13:48,124 INFO L125 PetriNetUnfolderBase]: For 15306/15306 co-relation queries the response was YES. [2023-08-24 11:13:48,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 619 events. 338/619 cut-off events. For 15306/15306 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2653 event pairs, 23 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4478. Up to 207 conditions per place. [2023-08-24 11:13:48,128 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2023-08-24 11:13:48,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 2183 flow [2023-08-24 11:13:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 11:13:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 11:13:48,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1046 transitions. [2023-08-24 11:13:48,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539930555555556 [2023-08-24 11:13:48,131 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1046 transitions. [2023-08-24 11:13:48,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1046 transitions. [2023-08-24 11:13:48,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:48,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1046 transitions. [2023-08-24 11:13:48,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.111111111111114) internal successors, (1046), 18 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,137 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 128.0) internal successors, (2432), 19 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,137 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 944 flow. Second operand 18 states and 1046 transitions. [2023-08-24 11:13:48,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 2183 flow [2023-08-24 11:13:48,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 1903 flow, removed 130 selfloop flow, removed 4 redundant places. [2023-08-24 11:13:48,160 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 1311 flow [2023-08-24 11:13:48,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1311, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2023-08-24 11:13:48,161 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 94 predicate places. [2023-08-24 11:13:48,161 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 1311 flow [2023-08-24 11:13:48,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 54.714285714285715) internal successors, (766), 14 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:48,162 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:48,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:48,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:48,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:48,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 718842052, now seen corresponding path program 7 times [2023-08-24 11:13:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577257407] [2023-08-24 11:13:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:48,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577257407] [2023-08-24 11:13:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577257407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753432211] [2023-08-24 11:13:48,429 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 11:13:48,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:48,430 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:48,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 11:13:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:48,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 11:13:48,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:48,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753432211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:48,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-24 11:13:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611417453] [2023-08-24 11:13:48,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:48,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 11:13:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 11:13:48,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-24 11:13:48,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:48,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 1311 flow. Second operand has 15 states, 15 states have (on average 54.733333333333334) internal successors, (821), 15 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:48,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:48,919 INFO L124 PetriNetUnfolderBase]: 390/711 cut-off events. [2023-08-24 11:13:48,919 INFO L125 PetriNetUnfolderBase]: For 27776/27776 co-relation queries the response was YES. [2023-08-24 11:13:48,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 711 events. 390/711 cut-off events. For 27776/27776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3085 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5847. Up to 238 conditions per place. [2023-08-24 11:13:48,924 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2023-08-24 11:13:48,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 2973 flow [2023-08-24 11:13:48,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 11:13:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 11:13:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1224 transitions. [2023-08-24 11:13:48,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2023-08-24 11:13:48,928 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1224 transitions. [2023-08-24 11:13:48,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1224 transitions. [2023-08-24 11:13:48,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:48,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1224 transitions. [2023-08-24 11:13:48,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 58.285714285714285) internal successors, (1224), 21 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,934 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 128.0) internal successors, (2816), 22 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,934 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 1311 flow. Second operand 21 states and 1224 transitions. [2023-08-24 11:13:48,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 165 transitions, 2973 flow [2023-08-24 11:13:48,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 165 transitions, 2401 flow, removed 246 selfloop flow, removed 12 redundant places. [2023-08-24 11:13:48,963 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1712 flow [2023-08-24 11:13:48,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1712, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2023-08-24 11:13:48,963 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 112 predicate places. [2023-08-24 11:13:48,963 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1712 flow [2023-08-24 11:13:48,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 54.733333333333334) internal successors, (821), 15 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:48,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:48,964 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:48,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:49,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:49,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash -995492584, now seen corresponding path program 8 times [2023-08-24 11:13:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414333577] [2023-08-24 11:13:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414333577] [2023-08-24 11:13:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414333577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690760970] [2023-08-24 11:13:49,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 11:13:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:49,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:49,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 11:13:49,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 11:13:49,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:49,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 11:13:49,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:49,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:49,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:49,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:49,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690760970] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:49,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:49,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-24 11:13:49,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656532716] [2023-08-24 11:13:49,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:49,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 11:13:49,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:49,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 11:13:49,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-24 11:13:49,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1712 flow. Second operand has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:50,138 INFO L124 PetriNetUnfolderBase]: 538/959 cut-off events. [2023-08-24 11:13:50,138 INFO L125 PetriNetUnfolderBase]: For 43054/43054 co-relation queries the response was YES. [2023-08-24 11:13:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 959 events. 538/959 cut-off events. For 43054/43054 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4124 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8675. Up to 330 conditions per place. [2023-08-24 11:13:50,145 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-24 11:13:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 4924 flow [2023-08-24 11:13:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 11:13:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 11:13:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2090 transitions. [2023-08-24 11:13:50,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4535590277777778 [2023-08-24 11:13:50,149 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2090 transitions. [2023-08-24 11:13:50,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2090 transitions. [2023-08-24 11:13:50,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:50,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2090 transitions. [2023-08-24 11:13:50,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 58.05555555555556) internal successors, (2090), 36 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 128.0) internal successors, (4736), 37 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 128.0) internal successors, (4736), 37 states have internal predecessors, (4736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:50,160 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1712 flow. Second operand 36 states and 2090 transitions. [2023-08-24 11:13:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 4924 flow [2023-08-24 11:13:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 4317 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-08-24 11:13:50,205 INFO L231 Difference]: Finished difference. Result has 169 places, 138 transitions, 2757 flow [2023-08-24 11:13:50,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2757, PETRI_PLACES=169, PETRI_TRANSITIONS=138} [2023-08-24 11:13:50,205 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 151 predicate places. [2023-08-24 11:13:50,205 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 138 transitions, 2757 flow [2023-08-24 11:13:50,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.5) internal successors, (1199), 22 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:50,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:50,206 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:50,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:50,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-24 11:13:50,418 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:50,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash -697416420, now seen corresponding path program 9 times [2023-08-24 11:13:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:50,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638340480] [2023-08-24 11:13:50,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:50,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:50,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638340480] [2023-08-24 11:13:50,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638340480] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:50,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737716547] [2023-08-24 11:13:50,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 11:13:50,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:50,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:50,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:50,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 11:13:50,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-24 11:13:50,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:50,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 11:13:50,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:50,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:50,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737716547] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:50,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:50,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-24 11:13:50,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724575920] [2023-08-24 11:13:50,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:50,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 11:13:50,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 11:13:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 11:13:50,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:50,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 138 transitions, 2757 flow. Second operand has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:50,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:50,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:50,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:51,722 INFO L124 PetriNetUnfolderBase]: 674/1231 cut-off events. [2023-08-24 11:13:51,722 INFO L125 PetriNetUnfolderBase]: For 90230/90230 co-relation queries the response was YES. [2023-08-24 11:13:51,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13996 conditions, 1231 events. 674/1231 cut-off events. For 90230/90230 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5608 event pairs, 101 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13921. Up to 466 conditions per place. [2023-08-24 11:13:51,734 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2023-08-24 11:13:51,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 284 transitions, 6988 flow [2023-08-24 11:13:51,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 11:13:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 11:13:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2185 transitions. [2023-08-24 11:13:51,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2023-08-24 11:13:51,737 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2185 transitions. [2023-08-24 11:13:51,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2185 transitions. [2023-08-24 11:13:51,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:51,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2185 transitions. [2023-08-24 11:13:51,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 57.5) internal successors, (2185), 38 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:51,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 128.0) internal successors, (4992), 39 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:51,745 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 128.0) internal successors, (4992), 39 states have internal predecessors, (4992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:51,745 INFO L175 Difference]: Start difference. First operand has 169 places, 138 transitions, 2757 flow. Second operand 38 states and 2185 transitions. [2023-08-24 11:13:51,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 284 transitions, 6988 flow [2023-08-24 11:13:51,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 284 transitions, 5397 flow, removed 763 selfloop flow, removed 13 redundant places. [2023-08-24 11:13:51,901 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 3027 flow [2023-08-24 11:13:51,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3027, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2023-08-24 11:13:51,903 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 183 predicate places. [2023-08-24 11:13:51,903 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 3027 flow [2023-08-24 11:13:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:51,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:51,904 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:51,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 11:13:52,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:52,108 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:52,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2019187656, now seen corresponding path program 10 times [2023-08-24 11:13:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359131906] [2023-08-24 11:13:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:52,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:52,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359131906] [2023-08-24 11:13:52,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359131906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:52,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257513677] [2023-08-24 11:13:52,330 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 11:13:52,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:52,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:52,331 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:52,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 11:13:52,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 11:13:52,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:52,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 11:13:52,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:52,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:52,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257513677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:52,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:52,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-24 11:13:52,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245983354] [2023-08-24 11:13:52,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 11:13:52,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:52,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 11:13:52,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-08-24 11:13:52,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:52,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 3027 flow. Second operand has 35 states, 35 states have (on average 54.34285714285714) internal successors, (1902), 35 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:52,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:52,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:52,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:53,733 INFO L124 PetriNetUnfolderBase]: 858/1595 cut-off events. [2023-08-24 11:13:53,733 INFO L125 PetriNetUnfolderBase]: For 147115/147115 co-relation queries the response was YES. [2023-08-24 11:13:53,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17908 conditions, 1595 events. 858/1595 cut-off events. For 147115/147115 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7851 event pairs, 40 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17829. Up to 646 conditions per place. [2023-08-24 11:13:53,746 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2023-08-24 11:13:53,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 351 transitions, 7742 flow [2023-08-24 11:13:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-24 11:13:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-24 11:13:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2538 transitions. [2023-08-24 11:13:53,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45063920454545453 [2023-08-24 11:13:53,749 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2538 transitions. [2023-08-24 11:13:53,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2538 transitions. [2023-08-24 11:13:53,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:53,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2538 transitions. [2023-08-24 11:13:53,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 57.68181818181818) internal successors, (2538), 44 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:53,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 128.0) internal successors, (5760), 45 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:53,758 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 128.0) internal successors, (5760), 45 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:53,758 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 3027 flow. Second operand 44 states and 2538 transitions. [2023-08-24 11:13:53,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 351 transitions, 7742 flow [2023-08-24 11:13:53,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 351 transitions, 7093 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-08-24 11:13:53,976 INFO L231 Difference]: Finished difference. Result has 238 places, 221 transitions, 4322 flow [2023-08-24 11:13:53,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4322, PETRI_PLACES=238, PETRI_TRANSITIONS=221} [2023-08-24 11:13:53,977 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 220 predicate places. [2023-08-24 11:13:53,977 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 221 transitions, 4322 flow [2023-08-24 11:13:53,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 54.34285714285714) internal successors, (1902), 35 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:53,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:53,978 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:53,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 11:13:54,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:54,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:54,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:54,181 INFO L85 PathProgramCache]: Analyzing trace with hash 174054140, now seen corresponding path program 11 times [2023-08-24 11:13:54,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:54,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102345612] [2023-08-24 11:13:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:54,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:54,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:54,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102345612] [2023-08-24 11:13:54,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102345612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:54,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682514979] [2023-08-24 11:13:54,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 11:13:54,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:54,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:54,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:54,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 11:13:54,433 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-24 11:13:54,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:54,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 11:13:54,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:54,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682514979] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:54,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-24 11:13:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400997962] [2023-08-24 11:13:54,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 11:13:54,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 11:13:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 11:13:54,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:54,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 221 transitions, 4322 flow. Second operand has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:54,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:54,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:54,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:55,626 INFO L124 PetriNetUnfolderBase]: 1038/1931 cut-off events. [2023-08-24 11:13:55,626 INFO L125 PetriNetUnfolderBase]: For 249495/249495 co-relation queries the response was YES. [2023-08-24 11:13:55,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24730 conditions, 1931 events. 1038/1931 cut-off events. For 249495/249495 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9822 event pairs, 24 based on Foata normal form. 32/1963 useless extension candidates. Maximal degree in co-relation 24639. Up to 802 conditions per place. [2023-08-24 11:13:55,644 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 91 selfloop transitions, 229 changer transitions 63/383 dead transitions. [2023-08-24 11:13:55,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 383 transitions, 9402 flow [2023-08-24 11:13:55,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 11:13:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 11:13:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2425 transitions. [2023-08-24 11:13:55,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45107886904761907 [2023-08-24 11:13:55,651 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2425 transitions. [2023-08-24 11:13:55,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2425 transitions. [2023-08-24 11:13:55,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:55,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2425 transitions. [2023-08-24 11:13:55,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 57.73809523809524) internal successors, (2425), 42 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:55,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 128.0) internal successors, (5504), 43 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:55,662 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 128.0) internal successors, (5504), 43 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:55,662 INFO L175 Difference]: Start difference. First operand has 238 places, 221 transitions, 4322 flow. Second operand 42 states and 2425 transitions. [2023-08-24 11:13:55,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 383 transitions, 9402 flow [2023-08-24 11:13:56,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 383 transitions, 8480 flow, removed 371 selfloop flow, removed 18 redundant places. [2023-08-24 11:13:56,041 INFO L231 Difference]: Finished difference. Result has 275 places, 260 transitions, 5334 flow [2023-08-24 11:13:56,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5334, PETRI_PLACES=275, PETRI_TRANSITIONS=260} [2023-08-24 11:13:56,041 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 257 predicate places. [2023-08-24 11:13:56,041 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 260 transitions, 5334 flow [2023-08-24 11:13:56,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:56,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:56,042 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:56,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 11:13:56,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 11:13:56,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:56,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:56,243 INFO L85 PathProgramCache]: Analyzing trace with hash 546330768, now seen corresponding path program 12 times [2023-08-24 11:13:56,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:56,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563021510] [2023-08-24 11:13:56,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:56,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563021510] [2023-08-24 11:13:56,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563021510] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071565461] [2023-08-24 11:13:56,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 11:13:56,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:56,422 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:56,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 11:13:56,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-08-24 11:13:56,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 11:13:56,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 11:13:56,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:56,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:56,729 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:56,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071565461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:56,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:56,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-24 11:13:56,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815088592] [2023-08-24 11:13:56,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:56,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 11:13:56,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:56,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 11:13:56,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 11:13:56,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:56,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 260 transitions, 5334 flow. Second operand has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:56,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:56,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:56,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:13:57,806 INFO L124 PetriNetUnfolderBase]: 1066/1975 cut-off events. [2023-08-24 11:13:57,806 INFO L125 PetriNetUnfolderBase]: For 351961/351961 co-relation queries the response was YES. [2023-08-24 11:13:57,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27585 conditions, 1975 events. 1066/1975 cut-off events. For 351961/351961 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 10104 event pairs, 12 based on Foata normal form. 28/2003 useless extension candidates. Maximal degree in co-relation 27479. Up to 806 conditions per place. [2023-08-24 11:13:57,824 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 70 selfloop transitions, 253 changer transitions 78/401 dead transitions. [2023-08-24 11:13:57,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 401 transitions, 10466 flow [2023-08-24 11:13:57,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 11:13:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 11:13:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2432 transitions. [2023-08-24 11:13:57,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-08-24 11:13:57,827 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2432 transitions. [2023-08-24 11:13:57,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2432 transitions. [2023-08-24 11:13:57,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:13:57,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2432 transitions. [2023-08-24 11:13:57,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 57.904761904761905) internal successors, (2432), 42 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:57,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 128.0) internal successors, (5504), 43 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:57,833 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 128.0) internal successors, (5504), 43 states have internal predecessors, (5504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:57,833 INFO L175 Difference]: Start difference. First operand has 275 places, 260 transitions, 5334 flow. Second operand 42 states and 2432 transitions. [2023-08-24 11:13:57,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 401 transitions, 10466 flow [2023-08-24 11:13:58,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 401 transitions, 9280 flow, removed 481 selfloop flow, removed 20 redundant places. [2023-08-24 11:13:58,525 INFO L231 Difference]: Finished difference. Result has 307 places, 275 transitions, 5845 flow [2023-08-24 11:13:58,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5845, PETRI_PLACES=307, PETRI_TRANSITIONS=275} [2023-08-24 11:13:58,525 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 289 predicate places. [2023-08-24 11:13:58,525 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 275 transitions, 5845 flow [2023-08-24 11:13:58,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 54.3235294117647) internal successors, (1847), 34 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:58,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:13:58,526 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:13:58,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 11:13:58,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 11:13:58,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:13:58,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:13:58,730 INFO L85 PathProgramCache]: Analyzing trace with hash 822277004, now seen corresponding path program 13 times [2023-08-24 11:13:58,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:13:58,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927555888] [2023-08-24 11:13:58,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:13:58,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:13:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:58,976 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 11:13:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927555888] [2023-08-24 11:13:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927555888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 11:13:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673606831] [2023-08-24 11:13:58,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 11:13:58,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 11:13:58,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 11:13:58,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 11:13:58,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 11:13:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 11:13:59,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 11:13:59,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 11:13:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:59,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 11:13:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 11:13:59,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673606831] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 11:13:59,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 11:13:59,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 27 [2023-08-24 11:13:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355227180] [2023-08-24 11:13:59,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 11:13:59,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 11:13:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 11:13:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 11:13:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2023-08-24 11:13:59,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2023-08-24 11:13:59,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 275 transitions, 5845 flow. Second operand has 29 states, 29 states have (on average 54.41379310344828) internal successors, (1578), 29 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:13:59,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 11:13:59,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2023-08-24 11:13:59,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 11:14:00,577 INFO L124 PetriNetUnfolderBase]: 1166/2151 cut-off events. [2023-08-24 11:14:00,577 INFO L125 PetriNetUnfolderBase]: For 437676/437676 co-relation queries the response was YES. [2023-08-24 11:14:00,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32229 conditions, 2151 events. 1166/2151 cut-off events. For 437676/437676 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10977 event pairs, 15 based on Foata normal form. 20/2171 useless extension candidates. Maximal degree in co-relation 32113. Up to 866 conditions per place. [2023-08-24 11:14:00,596 INFO L140 encePairwiseOnDemand]: 123/128 looper letters, 80 selfloop transitions, 278 changer transitions 90/448 dead transitions. [2023-08-24 11:14:00,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 448 transitions, 12472 flow [2023-08-24 11:14:00,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 11:14:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 11:14:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2776 transitions. [2023-08-24 11:14:00,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518229166666667 [2023-08-24 11:14:00,600 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2776 transitions. [2023-08-24 11:14:00,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2776 transitions. [2023-08-24 11:14:00,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 11:14:00,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2776 transitions. [2023-08-24 11:14:00,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 57.833333333333336) internal successors, (2776), 48 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:00,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 128.0) internal successors, (6272), 49 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:00,608 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 128.0) internal successors, (6272), 49 states have internal predecessors, (6272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:00,608 INFO L175 Difference]: Start difference. First operand has 307 places, 275 transitions, 5845 flow. Second operand 48 states and 2776 transitions. [2023-08-24 11:14:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 448 transitions, 12472 flow [2023-08-24 11:14:01,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 448 transitions, 10659 flow, removed 711 selfloop flow, removed 33 redundant places. [2023-08-24 11:14:01,176 INFO L231 Difference]: Finished difference. Result has 331 places, 300 transitions, 6500 flow [2023-08-24 11:14:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=4692, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6500, PETRI_PLACES=331, PETRI_TRANSITIONS=300} [2023-08-24 11:14:01,177 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 313 predicate places. [2023-08-24 11:14:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 300 transitions, 6500 flow [2023-08-24 11:14:01,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 54.41379310344828) internal successors, (1578), 29 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 11:14:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 11:14:01,177 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 11:14:01,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 11:14:01,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 11:14:01,385 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 11:14:01,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 11:14:01,385 INFO L85 PathProgramCache]: Analyzing trace with hash 440369608, now seen corresponding path program 14 times [2023-08-24 11:14:01,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 11:14:01,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642688954] [2023-08-24 11:14:01,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 11:14:01,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 11:14:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:14:01,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 11:14:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 11:14:01,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 11:14:01,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 11:14:01,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 11:14:01,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 11:14:01,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 11:14:01,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 11:14:01,432 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-08-24 11:14:01,435 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 11:14:01,435 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 11:14:01,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 11:14:01 BasicIcfg [2023-08-24 11:14:01,474 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 11:14:01,474 INFO L158 Benchmark]: Toolchain (without parser) took 18868.51ms. Allocated memory was 406.8MB in the beginning and 796.9MB in the end (delta: 390.1MB). Free memory was 382.7MB in the beginning and 475.7MB in the end (delta: -93.0MB). Peak memory consumption was 298.1MB. Max. memory is 16.0GB. [2023-08-24 11:14:01,474 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 406.8MB. Free memory is still 384.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:14:01,474 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.80ms. Allocated memory is still 406.8MB. Free memory was 382.2MB in the beginning and 362.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 11:14:01,475 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.02ms. Allocated memory is still 406.8MB. Free memory was 362.8MB in the beginning and 361.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 11:14:01,475 INFO L158 Benchmark]: Boogie Preprocessor took 23.71ms. Allocated memory is still 406.8MB. Free memory was 361.1MB in the beginning and 359.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 11:14:01,475 INFO L158 Benchmark]: RCFGBuilder took 238.55ms. Allocated memory is still 406.8MB. Free memory was 359.6MB in the beginning and 346.5MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 11:14:01,475 INFO L158 Benchmark]: TraceAbstraction took 18218.27ms. Allocated memory was 406.8MB in the beginning and 796.9MB in the end (delta: 390.1MB). Free memory was 345.4MB in the beginning and 475.7MB in the end (delta: -130.3MB). Peak memory consumption was 260.3MB. Max. memory is 16.0GB. [2023-08-24 11:14:01,476 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 406.8MB. Free memory is still 384.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 352.80ms. Allocated memory is still 406.8MB. Free memory was 382.2MB in the beginning and 362.8MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.02ms. Allocated memory is still 406.8MB. Free memory was 362.8MB in the beginning and 361.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.71ms. Allocated memory is still 406.8MB. Free memory was 361.1MB in the beginning and 359.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 238.55ms. Allocated memory is still 406.8MB. Free memory was 359.6MB in the beginning and 346.5MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 18218.27ms. Allocated memory was 406.8MB in the beginning and 796.9MB in the end (delta: 390.1MB). Free memory was 345.4MB in the beginning and 475.7MB in the end (delta: -130.3MB). Peak memory consumption was 260.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 68 PlacesBefore, 18 PlacesAfterwards, 66 TransitionsBefore, 14 TransitionsAfterwards, 1200 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 1095 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 977, independent: 951, independent conditional: 0, independent unconditional: 951, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 646, independent: 636, independent conditional: 0, independent unconditional: 636, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 977, independent: 315, independent conditional: 0, independent unconditional: 315, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 646, unknown conditional: 0, unknown unconditional: 646] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=25, id1={3:0}, id2={5:0}, j=26, k=10, k=10] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 locations, 3 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: 18.1s, OverallIterations: 17, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3549 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3549 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 315 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2934 IncrementalHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 315 mSolverCounterUnsat, 0 mSDtfsCounter, 2934 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 758 GetRequests, 212 SyntacticMatches, 14 SemanticMatches, 532 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8584 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6500occurred in iteration=16, InterpolantAutomatonStates: 357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 544 ConstructedInterpolants, 0 QuantifiedInterpolants, 2328 SizeOfPredicates, 96 NumberOfNonLiveVariables, 1580 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 0/774 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-24 11:14:01,491 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...