/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 22:27:20,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 22:27:20,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-23 22:27:20,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 22:27:20,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 22:27:20,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 22:27:20,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 22:27:20,655 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 22:27:20,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 22:27:20,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 22:27:20,659 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 22:27:20,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 22:27:20,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 22:27:20,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 22:27:20,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 22:27:20,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 22:27:20,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 22:27:20,662 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 22:27:20,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 22:27:20,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 22:27:20,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 22:27:20,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 22:27:20,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 22:27:20,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 22:27:20,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 22:27:20,665 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 22:27:20,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 22:27:20,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 22:27:20,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 22:27:20,666 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 22:27:20,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 22:27:20,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 22:27:20,667 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 22:27:20,667 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 22:27:20,667 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 22:27:20,668 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 22:27:20,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 22:27:20,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 22:27:20,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 22:27:20,981 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 22:27:20,982 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 22:27:20,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-08-23 22:27:22,203 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 22:27:22,534 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 22:27:22,535 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-08-23 22:27:22,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc109d1f5/eaca4d54a28541d9aa2297f1cd0561f6/FLAG3b5a87717 [2023-08-23 22:27:22,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc109d1f5/eaca4d54a28541d9aa2297f1cd0561f6 [2023-08-23 22:27:22,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 22:27:22,577 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 22:27:22,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 22:27:22,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 22:27:22,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 22:27:22,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 10:27:22" (1/1) ... [2023-08-23 22:27:22,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0eaaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:22, skipping insertion in model container [2023-08-23 22:27:22,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 10:27:22" (1/1) ... [2023-08-23 22:27:22,639 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 22:27:23,050 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/queue.i[43284,43297] [2023-08-23 22:27:23,056 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/queue.i[43491,43504] [2023-08-23 22:27:23,059 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/queue.i[43772,43785] [2023-08-23 22:27:23,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 22:27:23,076 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 22:27:23,090 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-23 22:27:23,091 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-23 22:27:23,099 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-23 22:27:23,122 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/queue.i[43284,43297] [2023-08-23 22:27:23,123 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/queue.i[43491,43504] [2023-08-23 22:27:23,126 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/queue.i[43772,43785] [2023-08-23 22:27:23,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 22:27:23,176 INFO L206 MainTranslator]: Completed translation [2023-08-23 22:27:23,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23 WrapperNode [2023-08-23 22:27:23,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 22:27:23,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 22:27:23,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 22:27:23,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 22:27:23,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,239 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 252 [2023-08-23 22:27:23,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 22:27:23,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 22:27:23,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 22:27:23,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 22:27:23,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,256 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,286 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 22:27:23,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 22:27:23,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 22:27:23,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 22:27:23,305 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (1/1) ... [2023-08-23 22:27:23,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 22:27:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 22:27:23,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-23 22:27:23,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-23 22:27:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-23 22:27:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-23 22:27:23,362 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-23 22:27:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 22:27:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 22:27:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 22:27:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 22:27:23,364 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 22:27:23,519 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 22:27:23,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 22:27:23,967 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 22:27:23,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 22:27:23,976 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-23 22:27:23,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 10:27:23 BoogieIcfgContainer [2023-08-23 22:27:23,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 22:27:23,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 22:27:23,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 22:27:23,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 22:27:23,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 10:27:22" (1/3) ... [2023-08-23 22:27:23,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 10:27:23, skipping insertion in model container [2023-08-23 22:27:23,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 10:27:23" (2/3) ... [2023-08-23 22:27:23,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6147a18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 10:27:23, skipping insertion in model container [2023-08-23 22:27:23,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 10:27:23" (3/3) ... [2023-08-23 22:27:23,985 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-08-23 22:27:23,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 22:27:23,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-23 22:27:24,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 22:27:24,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-23 22:27:24,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 548 flow [2023-08-23 22:27:24,190 INFO L124 PetriNetUnfolderBase]: 15/264 cut-off events. [2023-08-23 22:27:24,190 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 22:27:24,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 264 events. 15/264 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 358 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-23 22:27:24,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 266 transitions, 548 flow [2023-08-23 22:27:24,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 255 transitions, 519 flow [2023-08-23 22:27:24,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 22:27:24,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 255 transitions, 519 flow [2023-08-23 22:27:24,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 255 transitions, 519 flow [2023-08-23 22:27:24,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 255 transitions, 519 flow [2023-08-23 22:27:24,298 INFO L124 PetriNetUnfolderBase]: 15/255 cut-off events. [2023-08-23 22:27:24,299 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-23 22:27:24,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 255 events. 15/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-08-23 22:27:24,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-08-23 22:27:32,472 INFO L134 LiptonReduction]: Checked pairs total: 35874 [2023-08-23 22:27:32,473 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-08-23 22:27:32,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 22:27:32,489 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;@74ba184d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 22:27:32,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-23 22:27:32,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 22:27:32,491 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-08-23 22:27:32,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 22:27:32,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:32,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-23 22:27:32,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:32,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash 31999, now seen corresponding path program 1 times [2023-08-23 22:27:32,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:32,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996030229] [2023-08-23 22:27:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:32,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:32,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:32,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996030229] [2023-08-23 22:27:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996030229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:32,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:32,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 22:27:32,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095785116] [2023-08-23 22:27:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:32,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-23 22:27:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:32,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-23 22:27:32,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-23 22:27:32,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 482 [2023-08-23 22:27:32,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:32,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:32,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 482 [2023-08-23 22:27:32,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:32,926 INFO L124 PetriNetUnfolderBase]: 1489/2562 cut-off events. [2023-08-23 22:27:32,926 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-23 22:27:32,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 2562 events. 1489/2562 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12043 event pairs, 1167 based on Foata normal form. 32/2225 useless extension candidates. Maximal degree in co-relation 4794. Up to 2313 conditions per place. [2023-08-23 22:27:32,943 INFO L140 encePairwiseOnDemand]: 479/482 looper letters, 52 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-08-23 22:27:32,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 237 flow [2023-08-23 22:27:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-23 22:27:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-23 22:27:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 561 transitions. [2023-08-23 22:27:32,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819502074688797 [2023-08-23 22:27:32,963 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 561 transitions. [2023-08-23 22:27:32,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 561 transitions. [2023-08-23 22:27:32,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:32,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 561 transitions. [2023-08-23 22:27:32,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:32,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:32,980 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:32,981 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 143 flow. Second operand 2 states and 561 transitions. [2023-08-23 22:27:32,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 237 flow [2023-08-23 22:27:32,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 22:27:32,988 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 128 flow [2023-08-23 22:27:32,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-08-23 22:27:32,994 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-08-23 22:27:32,994 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 128 flow [2023-08-23 22:27:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:32,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:32,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:32,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 22:27:32,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:32,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1793584973, now seen corresponding path program 1 times [2023-08-23 22:27:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:32,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408242449] [2023-08-23 22:27:32,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:32,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:33,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:33,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408242449] [2023-08-23 22:27:33,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408242449] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:33,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:33,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 22:27:33,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738487881] [2023-08-23 22:27:33,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:33,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:27:33,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:33,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:27:33,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:27:33,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-08-23 22:27:33,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:33,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:33,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-08-23 22:27:33,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:33,462 INFO L124 PetriNetUnfolderBase]: 1457/2528 cut-off events. [2023-08-23 22:27:33,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 22:27:33,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 2528 events. 1457/2528 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12005 event pairs, 1122 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 4861. Up to 2166 conditions per place. [2023-08-23 22:27:33,475 INFO L140 encePairwiseOnDemand]: 478/482 looper letters, 67 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-08-23 22:27:33,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 306 flow [2023-08-23 22:27:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:27:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:27:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-08-23 22:27:33,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615491009681881 [2023-08-23 22:27:33,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-08-23 22:27:33,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-08-23 22:27:33,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:33,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-08-23 22:27:33,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:33,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:33,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:33,485 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 128 flow. Second operand 3 states and 812 transitions. [2023-08-23 22:27:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 306 flow [2023-08-23 22:27:33,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 22:27:33,487 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2023-08-23 22:27:33,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-23 22:27:33,488 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-08-23 22:27:33,488 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2023-08-23 22:27:33,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:33,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:33,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:33,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 22:27:33,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:33,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:33,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1351646121, now seen corresponding path program 1 times [2023-08-23 22:27:33,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:33,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729755280] [2023-08-23 22:27:33,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:33,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:34,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729755280] [2023-08-23 22:27:34,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729755280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:34,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:34,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 22:27:34,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287515661] [2023-08-23 22:27:34,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:34,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 22:27:34,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:34,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 22:27:34,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 22:27:34,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 482 [2023-08-23 22:27:34,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:34,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:34,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 482 [2023-08-23 22:27:34,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:35,599 INFO L124 PetriNetUnfolderBase]: 1557/2661 cut-off events. [2023-08-23 22:27:35,600 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-23 22:27:35,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 2661 events. 1557/2661 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12368 event pairs, 1200 based on Foata normal form. 0/2315 useless extension candidates. Maximal degree in co-relation 5256. Up to 2435 conditions per place. [2023-08-23 22:27:35,614 INFO L140 encePairwiseOnDemand]: 475/482 looper letters, 56 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-23 22:27:35,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-08-23 22:27:35,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 22:27:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 22:27:35,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2023-08-23 22:27:35,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066390041493776 [2023-08-23 22:27:35,618 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2023-08-23 22:27:35,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2023-08-23 22:27:35,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:35,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2023-08-23 22:27:35,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:35,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:35,627 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:35,627 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 6 states and 1176 transitions. [2023-08-23 22:27:35,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-08-23 22:27:35,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 22:27:35,631 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 184 flow [2023-08-23 22:27:35,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-23 22:27:35,633 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-08-23 22:27:35,633 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 184 flow [2023-08-23 22:27:35,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:35,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:35,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:35,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 22:27:35,634 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:35,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1063417523, now seen corresponding path program 1 times [2023-08-23 22:27:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577923442] [2023-08-23 22:27:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:36,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:36,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577923442] [2023-08-23 22:27:36,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577923442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 22:27:36,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943679195] [2023-08-23 22:27:36,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:36,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 22:27:36,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 22:27:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-23 22:27:36,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 482 [2023-08-23 22:27:36,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:36,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:36,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 482 [2023-08-23 22:27:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:36,755 INFO L124 PetriNetUnfolderBase]: 1732/2919 cut-off events. [2023-08-23 22:27:36,756 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-08-23 22:27:36,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 2919 events. 1732/2919 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13903 event pairs, 297 based on Foata normal form. 17/2612 useless extension candidates. Maximal degree in co-relation 5945. Up to 2384 conditions per place. [2023-08-23 22:27:36,772 INFO L140 encePairwiseOnDemand]: 476/482 looper letters, 92 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-08-23 22:27:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 484 flow [2023-08-23 22:27:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 22:27:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 22:27:36,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-08-23 22:27:36,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141078838174274 [2023-08-23 22:27:36,776 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-08-23 22:27:36,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-08-23 22:27:36,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:36,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-08-23 22:27:36,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:36,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:36,784 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:36,784 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 184 flow. Second operand 5 states and 998 transitions. [2023-08-23 22:27:36,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 484 flow [2023-08-23 22:27:36,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-23 22:27:36,788 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 246 flow [2023-08-23 22:27:36,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2023-08-23 22:27:36,789 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-08-23 22:27:36,789 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 246 flow [2023-08-23 22:27:36,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:36,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:36,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:36,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 22:27:36,790 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:36,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -306674726, now seen corresponding path program 1 times [2023-08-23 22:27:36,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:36,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310273253] [2023-08-23 22:27:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:37,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:37,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310273253] [2023-08-23 22:27:37,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310273253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:37,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:37,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 22:27:37,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247728998] [2023-08-23 22:27:37,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:37,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-23 22:27:37,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-23 22:27:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-23 22:27:37,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-08-23 22:27:37,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:37,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:37,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-08-23 22:27:37,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:37,918 INFO L124 PetriNetUnfolderBase]: 1737/2937 cut-off events. [2023-08-23 22:27:37,918 INFO L125 PetriNetUnfolderBase]: For 646/646 co-relation queries the response was YES. [2023-08-23 22:27:37,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2937 events. 1737/2937 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14004 event pairs, 1240 based on Foata normal form. 0/2610 useless extension candidates. Maximal degree in co-relation 6288. Up to 2710 conditions per place. [2023-08-23 22:27:37,936 INFO L140 encePairwiseOnDemand]: 472/482 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-08-23 22:27:37,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 459 flow [2023-08-23 22:27:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 22:27:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 22:27:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1471 transitions. [2023-08-23 22:27:37,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38148340248962653 [2023-08-23 22:27:37,940 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1471 transitions. [2023-08-23 22:27:37,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1471 transitions. [2023-08-23 22:27:37,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:37,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1471 transitions. [2023-08-23 22:27:37,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.875) internal successors, (1471), 8 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:37,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:37,949 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:37,949 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 246 flow. Second operand 8 states and 1471 transitions. [2023-08-23 22:27:37,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 459 flow [2023-08-23 22:27:37,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 451 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-23 22:27:37,954 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 312 flow [2023-08-23 22:27:37,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-08-23 22:27:37,955 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2023-08-23 22:27:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 312 flow [2023-08-23 22:27:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:37,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 22:27:37,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:37,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1111539889, now seen corresponding path program 1 times [2023-08-23 22:27:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:37,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712274197] [2023-08-23 22:27:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:38,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:38,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712274197] [2023-08-23 22:27:38,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712274197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:38,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:38,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 22:27:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755646634] [2023-08-23 22:27:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:27:38,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:38,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:27:38,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:27:38,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-08-23 22:27:38,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:38,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:38,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-08-23 22:27:38,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:38,289 INFO L124 PetriNetUnfolderBase]: 1303/2269 cut-off events. [2023-08-23 22:27:38,289 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2023-08-23 22:27:38,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 2269 events. 1303/2269 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9138 event pairs, 648 based on Foata normal form. 0/1940 useless extension candidates. Maximal degree in co-relation 4816. Up to 1312 conditions per place. [2023-08-23 22:27:38,302 INFO L140 encePairwiseOnDemand]: 478/482 looper letters, 86 selfloop transitions, 3 changer transitions 1/99 dead transitions. [2023-08-23 22:27:38,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 516 flow [2023-08-23 22:27:38,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:27:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:27:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-08-23 22:27:38,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663900414937759 [2023-08-23 22:27:38,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-08-23 22:27:38,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-08-23 22:27:38,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:38,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-08-23 22:27:38,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:38,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:38,309 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:38,309 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 312 flow. Second operand 3 states and 819 transitions. [2023-08-23 22:27:38,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 516 flow [2023-08-23 22:27:38,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 463 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-23 22:27:38,313 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 243 flow [2023-08-23 22:27:38,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-08-23 22:27:38,314 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-08-23 22:27:38,314 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 243 flow [2023-08-23 22:27:38,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:38,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:38,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:38,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 22:27:38,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:38,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:38,315 INFO L85 PathProgramCache]: Analyzing trace with hash 38477220, now seen corresponding path program 1 times [2023-08-23 22:27:38,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:38,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630867185] [2023-08-23 22:27:38,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:39,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:39,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:39,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630867185] [2023-08-23 22:27:39,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630867185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:39,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:39,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-23 22:27:39,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303697754] [2023-08-23 22:27:39,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:39,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 22:27:39,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:39,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 22:27:39,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-23 22:27:39,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-08-23 22:27:39,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 243 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:39,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:39,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-08-23 22:27:39,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:39,956 INFO L124 PetriNetUnfolderBase]: 1378/2429 cut-off events. [2023-08-23 22:27:39,956 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-08-23 22:27:39,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 2429 events. 1378/2429 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10166 event pairs, 378 based on Foata normal form. 0/2101 useless extension candidates. Maximal degree in co-relation 5072. Up to 1785 conditions per place. [2023-08-23 22:27:39,970 INFO L140 encePairwiseOnDemand]: 472/482 looper letters, 89 selfloop transitions, 17 changer transitions 9/124 dead transitions. [2023-08-23 22:27:39,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 590 flow [2023-08-23 22:27:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 22:27:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 22:27:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1467 transitions. [2023-08-23 22:27:39,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804460580912863 [2023-08-23 22:27:39,976 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1467 transitions. [2023-08-23 22:27:39,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1467 transitions. [2023-08-23 22:27:39,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:39,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1467 transitions. [2023-08-23 22:27:39,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.375) internal successors, (1467), 8 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:39,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:39,985 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:39,986 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 243 flow. Second operand 8 states and 1467 transitions. [2023-08-23 22:27:39,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 590 flow [2023-08-23 22:27:39,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 22:27:39,991 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 308 flow [2023-08-23 22:27:39,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-08-23 22:27:39,994 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-08-23 22:27:39,994 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 308 flow [2023-08-23 22:27:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:39,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:39,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 22:27:39,995 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:39,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -917016712, now seen corresponding path program 2 times [2023-08-23 22:27:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949252508] [2023-08-23 22:27:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:40,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:40,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949252508] [2023-08-23 22:27:40,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949252508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:40,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:40,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-23 22:27:40,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149423711] [2023-08-23 22:27:40,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:40,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 22:27:40,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 22:27:40,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-23 22:27:40,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-08-23 22:27:40,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:40,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:40,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-08-23 22:27:40,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:41,372 INFO L124 PetriNetUnfolderBase]: 1459/2574 cut-off events. [2023-08-23 22:27:41,372 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2023-08-23 22:27:41,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 2574 events. 1459/2574 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11062 event pairs, 469 based on Foata normal form. 0/2215 useless extension candidates. Maximal degree in co-relation 5558. Up to 1623 conditions per place. [2023-08-23 22:27:41,391 INFO L140 encePairwiseOnDemand]: 472/482 looper letters, 88 selfloop transitions, 19 changer transitions 8/124 dead transitions. [2023-08-23 22:27:41,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 651 flow [2023-08-23 22:27:41,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 22:27:41,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 22:27:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1464 transitions. [2023-08-23 22:27:41,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796680497925311 [2023-08-23 22:27:41,396 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1464 transitions. [2023-08-23 22:27:41,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1464 transitions. [2023-08-23 22:27:41,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:41,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1464 transitions. [2023-08-23 22:27:41,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:41,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:41,406 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:41,406 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 308 flow. Second operand 8 states and 1464 transitions. [2023-08-23 22:27:41,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 651 flow [2023-08-23 22:27:41,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 619 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-23 22:27:41,410 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 351 flow [2023-08-23 22:27:41,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=351, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-08-23 22:27:41,413 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2023-08-23 22:27:41,413 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 351 flow [2023-08-23 22:27:41,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:41,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:41,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:41,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 22:27:41,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:41,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -916987882, now seen corresponding path program 3 times [2023-08-23 22:27:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278279476] [2023-08-23 22:27:41,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:42,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278279476] [2023-08-23 22:27:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278279476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:42,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:42,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-23 22:27:42,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475075451] [2023-08-23 22:27:42,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:42,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 22:27:42,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:42,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 22:27:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-08-23 22:27:42,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-08-23 22:27:42,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 351 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:42,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:42,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-08-23 22:27:42,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:43,587 INFO L124 PetriNetUnfolderBase]: 1446/2562 cut-off events. [2023-08-23 22:27:43,588 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2023-08-23 22:27:43,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 2562 events. 1446/2562 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11107 event pairs, 406 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 5583. Up to 1877 conditions per place. [2023-08-23 22:27:43,598 INFO L140 encePairwiseOnDemand]: 472/482 looper letters, 94 selfloop transitions, 18 changer transitions 10/130 dead transitions. [2023-08-23 22:27:43,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 706 flow [2023-08-23 22:27:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 22:27:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 22:27:43,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1643 transitions. [2023-08-23 22:27:43,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37874596588289533 [2023-08-23 22:27:43,603 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1643 transitions. [2023-08-23 22:27:43,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1643 transitions. [2023-08-23 22:27:43,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:43,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1643 transitions. [2023-08-23 22:27:43,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,614 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,614 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 351 flow. Second operand 9 states and 1643 transitions. [2023-08-23 22:27:43,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 706 flow [2023-08-23 22:27:43,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 683 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-23 22:27:43,619 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 356 flow [2023-08-23 22:27:43,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=356, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2023-08-23 22:27:43,621 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-08-23 22:27:43,623 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 356 flow [2023-08-23 22:27:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:43,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 22:27:43,636 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:43,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash 546649345, now seen corresponding path program 1 times [2023-08-23 22:27:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:43,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333587379] [2023-08-23 22:27:43,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:43,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:43,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333587379] [2023-08-23 22:27:43,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333587379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 22:27:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021380486] [2023-08-23 22:27:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 22:27:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 22:27:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 22:27:43,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 482 [2023-08-23 22:27:43,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:43,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 482 [2023-08-23 22:27:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:43,897 INFO L124 PetriNetUnfolderBase]: 888/1663 cut-off events. [2023-08-23 22:27:43,898 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2023-08-23 22:27:43,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1663 events. 888/1663 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6927 event pairs, 166 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 3785. Up to 1180 conditions per place. [2023-08-23 22:27:43,905 INFO L140 encePairwiseOnDemand]: 476/482 looper letters, 71 selfloop transitions, 6 changer transitions 1/90 dead transitions. [2023-08-23 22:27:43,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 551 flow [2023-08-23 22:27:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 22:27:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 22:27:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-08-23 22:27:43,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414937759336099 [2023-08-23 22:27:43,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-08-23 22:27:43,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-08-23 22:27:43,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:43,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-08-23 22:27:43,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,912 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,912 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 356 flow. Second operand 3 states and 783 transitions. [2023-08-23 22:27:43,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 551 flow [2023-08-23 22:27:43,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 499 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-08-23 22:27:43,916 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 318 flow [2023-08-23 22:27:43,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-23 22:27:43,916 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-08-23 22:27:43,916 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 318 flow [2023-08-23 22:27:43,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:43,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:43,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 22:27:43,917 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:43,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1906929845, now seen corresponding path program 1 times [2023-08-23 22:27:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313822851] [2023-08-23 22:27:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:45,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:45,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313822851] [2023-08-23 22:27:45,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313822851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:45,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:45,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-23 22:27:45,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763232685] [2023-08-23 22:27:45,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:45,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-23 22:27:45,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:45,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-23 22:27:45,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-08-23 22:27:45,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-08-23 22:27:45,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 318 flow. Second operand has 16 states, 16 states have (on average 174.1875) internal successors, (2787), 16 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:45,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:45,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-08-23 22:27:45,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:47,347 INFO L124 PetriNetUnfolderBase]: 1593/3015 cut-off events. [2023-08-23 22:27:47,347 INFO L125 PetriNetUnfolderBase]: For 396/400 co-relation queries the response was YES. [2023-08-23 22:27:47,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 3015 events. 1593/3015 cut-off events. For 396/400 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15281 event pairs, 326 based on Foata normal form. 1/2877 useless extension candidates. Maximal degree in co-relation 6704. Up to 1097 conditions per place. [2023-08-23 22:27:47,364 INFO L140 encePairwiseOnDemand]: 463/482 looper letters, 168 selfloop transitions, 42 changer transitions 14/232 dead transitions. [2023-08-23 22:27:47,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 232 transitions, 1166 flow [2023-08-23 22:27:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-23 22:27:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-23 22:27:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3831 transitions. [2023-08-23 22:27:47,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784825133372851 [2023-08-23 22:27:47,374 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3831 transitions. [2023-08-23 22:27:47,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3831 transitions. [2023-08-23 22:27:47,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:47,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3831 transitions. [2023-08-23 22:27:47,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.42857142857142) internal successors, (3831), 21 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:47,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:47,395 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:47,395 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 318 flow. Second operand 21 states and 3831 transitions. [2023-08-23 22:27:47,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 232 transitions, 1166 flow [2023-08-23 22:27:47,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 232 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 22:27:47,402 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 535 flow [2023-08-23 22:27:47,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=535, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2023-08-23 22:27:47,403 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-08-23 22:27:47,403 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 535 flow [2023-08-23 22:27:47,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 174.1875) internal successors, (2787), 16 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:47,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:47,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:47,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-23 22:27:47,404 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:47,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:47,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1823393625, now seen corresponding path program 2 times [2023-08-23 22:27:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184855389] [2023-08-23 22:27:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:48,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184855389] [2023-08-23 22:27:48,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184855389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:48,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:48,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-23 22:27:48,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466759130] [2023-08-23 22:27:48,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:48,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-23 22:27:48,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:48,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-23 22:27:48,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-08-23 22:27:48,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 482 [2023-08-23 22:27:48,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 535 flow. Second operand has 11 states, 11 states have (on average 179.1818181818182) internal successors, (1971), 11 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:48,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:48,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 482 [2023-08-23 22:27:48,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:49,244 INFO L124 PetriNetUnfolderBase]: 1338/2509 cut-off events. [2023-08-23 22:27:49,244 INFO L125 PetriNetUnfolderBase]: For 788/790 co-relation queries the response was YES. [2023-08-23 22:27:49,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 2509 events. 1338/2509 cut-off events. For 788/790 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11809 event pairs, 405 based on Foata normal form. 28/2471 useless extension candidates. Maximal degree in co-relation 6120. Up to 893 conditions per place. [2023-08-23 22:27:49,258 INFO L140 encePairwiseOnDemand]: 468/482 looper letters, 113 selfloop transitions, 26 changer transitions 7/154 dead transitions. [2023-08-23 22:27:49,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 946 flow [2023-08-23 22:27:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 22:27:49,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 22:27:49,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1708 transitions. [2023-08-23 22:27:49,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937298294144767 [2023-08-23 22:27:49,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1708 transitions. [2023-08-23 22:27:49,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1708 transitions. [2023-08-23 22:27:49,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:49,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1708 transitions. [2023-08-23 22:27:49,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.77777777777777) internal successors, (1708), 9 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:49,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:49,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:49,273 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 535 flow. Second operand 9 states and 1708 transitions. [2023-08-23 22:27:49,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 946 flow [2023-08-23 22:27:49,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 836 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-08-23 22:27:49,281 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 498 flow [2023-08-23 22:27:49,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=498, PETRI_PLACES=100, PETRI_TRANSITIONS=96} [2023-08-23 22:27:49,282 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2023-08-23 22:27:49,282 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 498 flow [2023-08-23 22:27:49,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.1818181818182) internal successors, (1971), 11 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:49,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:49,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:49,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-23 22:27:49,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:49,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:49,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1157294127, now seen corresponding path program 3 times [2023-08-23 22:27:49,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:49,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505897521] [2023-08-23 22:27:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:49,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:50,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:50,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505897521] [2023-08-23 22:27:50,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505897521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:50,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:50,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-23 22:27:50,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096281677] [2023-08-23 22:27:50,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:50,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-23 22:27:50,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-23 22:27:50,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-23 22:27:50,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-08-23 22:27:50,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 96 transitions, 498 flow. Second operand has 12 states, 12 states have (on average 176.91666666666666) internal successors, (2123), 12 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:50,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:50,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-08-23 22:27:50,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:50,942 INFO L124 PetriNetUnfolderBase]: 1141/2151 cut-off events. [2023-08-23 22:27:50,943 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2023-08-23 22:27:50,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 2151 events. 1141/2151 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9631 event pairs, 254 based on Foata normal form. 14/2103 useless extension candidates. Maximal degree in co-relation 5412. Up to 793 conditions per place. [2023-08-23 22:27:50,953 INFO L140 encePairwiseOnDemand]: 471/482 looper letters, 110 selfloop transitions, 25 changer transitions 11/154 dead transitions. [2023-08-23 22:27:50,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 935 flow [2023-08-23 22:27:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-23 22:27:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-23 22:27:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2035 transitions. [2023-08-23 22:27:50,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38381742738589214 [2023-08-23 22:27:50,959 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2035 transitions. [2023-08-23 22:27:50,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2035 transitions. [2023-08-23 22:27:50,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:50,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2035 transitions. [2023-08-23 22:27:50,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:50,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:50,970 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:50,970 INFO L175 Difference]: Start difference. First operand has 100 places, 96 transitions, 498 flow. Second operand 11 states and 2035 transitions. [2023-08-23 22:27:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 935 flow [2023-08-23 22:27:50,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 154 transitions, 912 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-23 22:27:50,977 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 551 flow [2023-08-23 22:27:50,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2023-08-23 22:27:50,978 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-08-23 22:27:50,978 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 551 flow [2023-08-23 22:27:50,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.91666666666666) internal successors, (2123), 12 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:50,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:50,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-23 22:27:50,979 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:50,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1116139787, now seen corresponding path program 1 times [2023-08-23 22:27:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904635241] [2023-08-23 22:27:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:50,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904635241] [2023-08-23 22:27:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904635241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:53,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:53,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-23 22:27:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628507003] [2023-08-23 22:27:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-23 22:27:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-23 22:27:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-08-23 22:27:53,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-08-23 22:27:53,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 551 flow. Second operand has 15 states, 15 states have (on average 174.4) internal successors, (2616), 15 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:53,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:53,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-08-23 22:27:53,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:54,224 INFO L124 PetriNetUnfolderBase]: 1323/2495 cut-off events. [2023-08-23 22:27:54,224 INFO L125 PetriNetUnfolderBase]: For 1388/1390 co-relation queries the response was YES. [2023-08-23 22:27:54,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6382 conditions, 2495 events. 1323/2495 cut-off events. For 1388/1390 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11684 event pairs, 527 based on Foata normal form. 0/2421 useless extension candidates. Maximal degree in co-relation 6361. Up to 1474 conditions per place. [2023-08-23 22:27:54,235 INFO L140 encePairwiseOnDemand]: 469/482 looper letters, 135 selfloop transitions, 27 changer transitions 11/181 dead transitions. [2023-08-23 22:27:54,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 1117 flow [2023-08-23 22:27:54,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 22:27:54,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 22:27:54,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2213 transitions. [2023-08-23 22:27:54,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38260719225449513 [2023-08-23 22:27:54,241 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2213 transitions. [2023-08-23 22:27:54,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2213 transitions. [2023-08-23 22:27:54,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:54,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2213 transitions. [2023-08-23 22:27:54,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.41666666666666) internal successors, (2213), 12 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:54,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:54,253 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:54,253 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 551 flow. Second operand 12 states and 2213 transitions. [2023-08-23 22:27:54,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 1117 flow [2023-08-23 22:27:54,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 1086 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-23 22:27:54,261 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 628 flow [2023-08-23 22:27:54,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-08-23 22:27:54,262 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2023-08-23 22:27:54,262 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 628 flow [2023-08-23 22:27:54,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 174.4) internal successors, (2616), 15 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:54,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:54,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:54,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-23 22:27:54,263 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:54,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:54,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1441368751, now seen corresponding path program 2 times [2023-08-23 22:27:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:54,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260124316] [2023-08-23 22:27:54,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:54,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:27:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:27:56,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:27:56,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260124316] [2023-08-23 22:27:56,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260124316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:27:56,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:27:56,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-23 22:27:56,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844205758] [2023-08-23 22:27:56,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:27:56,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-23 22:27:56,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:27:56,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-23 22:27:56,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-08-23 22:27:56,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 482 [2023-08-23 22:27:56,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 628 flow. Second operand has 15 states, 15 states have (on average 175.4) internal successors, (2631), 15 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:56,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:27:56,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 482 [2023-08-23 22:27:56,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:27:57,044 INFO L124 PetriNetUnfolderBase]: 1522/2894 cut-off events. [2023-08-23 22:27:57,044 INFO L125 PetriNetUnfolderBase]: For 1804/1804 co-relation queries the response was YES. [2023-08-23 22:27:57,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 2894 events. 1522/2894 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14272 event pairs, 362 based on Foata normal form. 8/2828 useless extension candidates. Maximal degree in co-relation 7404. Up to 921 conditions per place. [2023-08-23 22:27:57,055 INFO L140 encePairwiseOnDemand]: 469/482 looper letters, 134 selfloop transitions, 32 changer transitions 11/185 dead transitions. [2023-08-23 22:27:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 185 transitions, 1204 flow [2023-08-23 22:27:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 22:27:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 22:27:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-08-23 22:27:57,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38399031811894885 [2023-08-23 22:27:57,060 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-08-23 22:27:57,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-08-23 22:27:57,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:27:57,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-08-23 22:27:57,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.08333333333334) internal successors, (2221), 12 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:57,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:57,074 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:57,074 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 628 flow. Second operand 12 states and 2221 transitions. [2023-08-23 22:27:57,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 185 transitions, 1204 flow [2023-08-23 22:27:57,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 185 transitions, 1160 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-23 22:27:57,082 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 705 flow [2023-08-23 22:27:57,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=705, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2023-08-23 22:27:57,083 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-08-23 22:27:57,083 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 705 flow [2023-08-23 22:27:57,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.4) internal successors, (2631), 15 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:27:57,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:27:57,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:27:57,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-23 22:27:57,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:27:57,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:27:57,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1674967413, now seen corresponding path program 3 times [2023-08-23 22:27:57,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:27:57,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152084612] [2023-08-23 22:27:57,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:27:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:27:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 22:28:00,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 22:28:00,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 22:28:00,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152084612] [2023-08-23 22:28:00,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152084612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 22:28:00,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 22:28:00,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-23 22:28:00,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203380640] [2023-08-23 22:28:00,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 22:28:00,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-23 22:28:00,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 22:28:00,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-23 22:28:00,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-08-23 22:28:00,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-08-23 22:28:00,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:28:00,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 22:28:00,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-08-23 22:28:00,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 22:28:01,695 INFO L124 PetriNetUnfolderBase]: 1692/3219 cut-off events. [2023-08-23 22:28:01,695 INFO L125 PetriNetUnfolderBase]: For 2508/2508 co-relation queries the response was YES. [2023-08-23 22:28:01,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 3219 events. 1692/3219 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15893 event pairs, 187 based on Foata normal form. 8/3144 useless extension candidates. Maximal degree in co-relation 8373. Up to 882 conditions per place. [2023-08-23 22:28:01,710 INFO L140 encePairwiseOnDemand]: 470/482 looper letters, 135 selfloop transitions, 33 changer transitions 11/187 dead transitions. [2023-08-23 22:28:01,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 1275 flow [2023-08-23 22:28:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 22:28:01,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 22:28:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2209 transitions. [2023-08-23 22:28:01,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819156293222683 [2023-08-23 22:28:01,714 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2209 transitions. [2023-08-23 22:28:01,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2209 transitions. [2023-08-23 22:28:01,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 22:28:01,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2209 transitions. [2023-08-23 22:28:01,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.08333333333334) internal successors, (2209), 12 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:28:01,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:28:01,723 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:28:01,723 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 705 flow. Second operand 12 states and 2209 transitions. [2023-08-23 22:28:01,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 1275 flow [2023-08-23 22:28:01,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 187 transitions, 1217 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-23 22:28:01,735 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 761 flow [2023-08-23 22:28:01,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=761, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2023-08-23 22:28:01,736 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2023-08-23 22:28:01,736 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 761 flow [2023-08-23 22:28:01,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 22:28:01,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 22:28:01,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 22:28:01,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-23 22:28:01,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-23 22:28:01,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 22:28:01,738 INFO L85 PathProgramCache]: Analyzing trace with hash 241474651, now seen corresponding path program 1 times [2023-08-23 22:28:01,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 22:28:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269330863] [2023-08-23 22:28:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 22:28:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 22:28:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-08-23 22:40:37,805 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-23 22:40:37,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-23 22:40:37,826 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-23 22:40:37,828 INFO L158 Benchmark]: Toolchain (without parser) took 795251.83ms. Allocated memory was 339.7MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 314.2MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-23 22:40:37,829 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory was 316.6MB in the beginning and 316.6MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 22:40:37,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.17ms. Allocated memory is still 339.7MB. Free memory was 314.2MB in the beginning and 284.0MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-23 22:40:37,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.14ms. Allocated memory is still 339.7MB. Free memory was 284.0MB in the beginning and 280.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 22:40:37,829 INFO L158 Benchmark]: Boogie Preprocessor took 63.76ms. Allocated memory is still 339.7MB. Free memory was 280.8MB in the beginning and 278.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 22:40:37,830 INFO L158 Benchmark]: RCFGBuilder took 673.71ms. Allocated memory is still 339.7MB. Free memory was 278.4MB in the beginning and 311.4MB in the end (delta: -33.1MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. [2023-08-23 22:40:37,830 INFO L158 Benchmark]: TraceAbstraction took 793848.49ms. Allocated memory was 339.7MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 310.3MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. [2023-08-23 22:40:37,831 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 339.7MB. Free memory was 316.6MB in the beginning and 316.6MB in the end (delta: 73.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 598.17ms. Allocated memory is still 339.7MB. Free memory was 314.2MB in the beginning and 284.0MB in the end (delta: 30.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.14ms. Allocated memory is still 339.7MB. Free memory was 284.0MB in the beginning and 280.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 63.76ms. Allocated memory is still 339.7MB. Free memory was 280.8MB in the beginning and 278.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 673.71ms. Allocated memory is still 339.7MB. Free memory was 278.4MB in the beginning and 311.4MB in the end (delta: -33.1MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. * TraceAbstraction took 793848.49ms. Allocated memory was 339.7MB in the beginning and 7.2GB in the end (delta: 6.9GB). Free memory was 310.3MB in the beginning and 3.2GB in the end (delta: -2.9GB). Peak memory consumption was 7.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 258]: Unsoundness Warning unspecified type, defaulting to int C: short [258] - GenericResultAtLocation [Line: 750]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.2s, 247 PlacesBefore, 63 PlacesAfterwards, 255 TransitionsBefore, 67 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 126 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 216 TotalNumberOfCompositions, 35874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17452, independent: 16741, independent conditional: 0, independent unconditional: 16741, dependent: 711, dependent conditional: 0, dependent unconditional: 711, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8554, independent: 8442, independent conditional: 0, independent unconditional: 8442, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17452, independent: 8299, independent conditional: 0, independent unconditional: 8299, dependent: 599, dependent conditional: 0, dependent unconditional: 599, unknown: 8554, unknown conditional: 0, unknown unconditional: 8554] , Statistics on independence cache: Total cache size (in pairs): 458, Positive cache size: 413, Positive conditional cache size: 0, Positive unconditional cache size: 413, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown