/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:08:06,858 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:08:06,939 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-23 23:08:06,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:08:06,944 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:08:06,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:08:06,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:08:06,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:08:06,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:08:06,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:08:06,981 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:08:06,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:08:06,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:08:06,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:08:06,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:08:06,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:08:06,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:08:06,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:08:06,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:08:06,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:08:06,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:08:06,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:08:06,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:08:06,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:08:06,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:08:06,986 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:08:06,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:08:06,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:06,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:08:06,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:08:06,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:08:06,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:08:06,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:08:06,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:08:06,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:08:06,988 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:08:07,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:08:07,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:08:07,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:08:07,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:08:07,339 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:08:07,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-23 23:08:08,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:08:08,783 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:08:08,783 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-23 23:08:08,798 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417478c69/7ee4771de9514187bd6d17754919b01f/FLAGfed553a9d [2023-08-23 23:08:08,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/417478c69/7ee4771de9514187bd6d17754919b01f [2023-08-23 23:08:08,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:08:08,815 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:08:08,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:08,816 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:08:08,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:08:08,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:08" (1/1) ... [2023-08-23 23:08:08,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc1b81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:08, skipping insertion in model container [2023-08-23 23:08:08,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:08:08" (1/1) ... [2023-08-23 23:08:08,889 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:08:09,051 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-08-23 23:08:09,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:09,319 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:08:09,330 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_power.oepc_pso.oepc_rmo.oepc.i[970,983] [2023-08-23 23:08:09,350 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:09,351 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:08:09,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:08:09,440 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:09,440 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:08:09,446 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:08:09,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09 WrapperNode [2023-08-23 23:08:09,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:08:09,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:09,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:08:09,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:08:09,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,523 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-08-23 23:08:09,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:08:09,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:08:09,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:08:09,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:08:09,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,550 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:08:09,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:08:09,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:08:09,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:08:09,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (1/1) ... [2023-08-23 23:08:09,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:08:09,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:08:09,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-23 23:08:09,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:08:09,663 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:08:09,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:08:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:08:09,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:08:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-23 23:08:09,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-23 23:08:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:08:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:08:09,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:08:09,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:08:09,666 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:08:09,784 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:08:09,785 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:08:10,087 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:08:10,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:08:10,277 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:08:10,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:10 BoogieIcfgContainer [2023-08-23 23:08:10,279 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:08:10,282 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:08:10,282 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:08:10,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:08:10,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:08:08" (1/3) ... [2023-08-23 23:08:10,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c35a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:10, skipping insertion in model container [2023-08-23 23:08:10,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:08:09" (2/3) ... [2023-08-23 23:08:10,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c35a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:08:10, skipping insertion in model container [2023-08-23 23:08:10,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:08:10" (3/3) ... [2023-08-23 23:08:10,289 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_power.oepc_pso.oepc_rmo.oepc.i [2023-08-23 23:08:10,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:08:10,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-23 23:08:10,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:08:10,383 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:08:10,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 107 transitions, 229 flow [2023-08-23 23:08:10,478 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-08-23 23:08:10,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:10,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-23 23:08:10,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 107 transitions, 229 flow [2023-08-23 23:08:10,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 104 transitions, 217 flow [2023-08-23 23:08:10,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:08:10,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 104 transitions, 217 flow [2023-08-23 23:08:10,500 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 104 transitions, 217 flow [2023-08-23 23:08:10,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 104 transitions, 217 flow [2023-08-23 23:08:10,539 INFO L124 PetriNetUnfolderBase]: 2/104 cut-off events. [2023-08-23 23:08:10,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:10,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-23 23:08:10,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 1920 [2023-08-23 23:08:13,949 INFO L134 LiptonReduction]: Checked pairs total: 5019 [2023-08-23 23:08:13,949 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-23 23:08:13,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:08:13,968 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;@7f1e3f04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:08:13,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-23 23:08:13,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:08:13,971 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-23 23:08:13,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:08:13,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:13,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-23 23:08:13,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:13,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:13,976 INFO L85 PathProgramCache]: Analyzing trace with hash 534214, now seen corresponding path program 1 times [2023-08-23 23:08:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:13,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544305893] [2023-08-23 23:08:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:14,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:14,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544305893] [2023-08-23 23:08:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544305893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:14,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-23 23:08:14,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866327598] [2023-08-23 23:08:14,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:14,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 198 [2023-08-23 23:08:14,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:14,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:14,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 198 [2023-08-23 23:08:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:14,708 INFO L124 PetriNetUnfolderBase]: 1263/2016 cut-off events. [2023-08-23 23:08:14,709 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-23 23:08:14,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 2016 events. 1263/2016 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10879 event pairs, 204 based on Foata normal form. 80/1935 useless extension candidates. Maximal degree in co-relation 3916. Up to 1510 conditions per place. [2023-08-23 23:08:14,721 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 33 selfloop transitions, 2 changer transitions 4/41 dead transitions. [2023-08-23 23:08:14,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 41 transitions, 175 flow [2023-08-23 23:08:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-23 23:08:14,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2023-08-23 23:08:14,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-23 23:08:14,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-23 23:08:14,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:14,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-23 23:08:14,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:14,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:14,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:14,746 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 315 transitions. [2023-08-23 23:08:14,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 41 transitions, 175 flow [2023-08-23 23:08:14,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:14,750 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 54 flow [2023-08-23 23:08:14,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-23 23:08:14,754 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-23 23:08:14,754 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 54 flow [2023-08-23 23:08:14,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:14,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:14,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:14,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:08:14,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:14,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1598286958, now seen corresponding path program 1 times [2023-08-23 23:08:14,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:14,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331263836] [2023-08-23 23:08:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:14,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:15,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:15,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331263836] [2023-08-23 23:08:15,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331263836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:15,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:15,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:15,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395808457] [2023-08-23 23:08:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:15,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:15,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:15,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:15,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:15,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:15,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:15,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:16,277 INFO L124 PetriNetUnfolderBase]: 1621/2422 cut-off events. [2023-08-23 23:08:16,278 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-08-23 23:08:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 2422 events. 1621/2422 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10547 event pairs, 454 based on Foata normal form. 140/2562 useless extension candidates. Maximal degree in co-relation 5042. Up to 1296 conditions per place. [2023-08-23 23:08:16,291 INFO L140 encePairwiseOnDemand]: 188/198 looper letters, 34 selfloop transitions, 8 changer transitions 29/71 dead transitions. [2023-08-23 23:08:16,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 71 transitions, 300 flow [2023-08-23 23:08:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2023-08-23 23:08:16,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422799422799423 [2023-08-23 23:08:16,295 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2023-08-23 23:08:16,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2023-08-23 23:08:16,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:16,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2023-08-23 23:08:16,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:16,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:16,301 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 54 flow. Second operand 7 states and 613 transitions. [2023-08-23 23:08:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 71 transitions, 300 flow [2023-08-23 23:08:16,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 71 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:16,304 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 126 flow [2023-08-23 23:08:16,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-08-23 23:08:16,305 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-23 23:08:16,305 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 126 flow [2023-08-23 23:08:16,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:16,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:16,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:16,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:08:16,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:16,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1577430061, now seen corresponding path program 1 times [2023-08-23 23:08:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877897934] [2023-08-23 23:08:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:17,027 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 23:08:17,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:17,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877897934] [2023-08-23 23:08:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877897934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:17,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:17,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031092210] [2023-08-23 23:08:17,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:17,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:17,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:17,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:17,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:17,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:17,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:17,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:17,566 INFO L124 PetriNetUnfolderBase]: 1517/2285 cut-off events. [2023-08-23 23:08:17,567 INFO L125 PetriNetUnfolderBase]: For 2307/2307 co-relation queries the response was YES. [2023-08-23 23:08:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 2285 events. 1517/2285 cut-off events. For 2307/2307 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 10167 event pairs, 420 based on Foata normal form. 89/2374 useless extension candidates. Maximal degree in co-relation 7049. Up to 1774 conditions per place. [2023-08-23 23:08:17,613 INFO L140 encePairwiseOnDemand]: 187/198 looper letters, 40 selfloop transitions, 17 changer transitions 23/80 dead transitions. [2023-08-23 23:08:17,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 496 flow [2023-08-23 23:08:17,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-08-23 23:08:17,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-23 23:08:17,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-08-23 23:08:17,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-08-23 23:08:17,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:17,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-08-23 23:08:17,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,622 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 126 flow. Second operand 7 states and 616 transitions. [2023-08-23 23:08:17,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 80 transitions, 496 flow [2023-08-23 23:08:17,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 80 transitions, 484 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:17,640 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 240 flow [2023-08-23 23:08:17,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-08-23 23:08:17,641 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-23 23:08:17,643 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 240 flow [2023-08-23 23:08:17,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:17,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:17,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:17,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:08:17,644 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:17,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:17,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1655715985, now seen corresponding path program 1 times [2023-08-23 23:08:17,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:17,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883004350] [2023-08-23 23:08:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:18,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:18,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883004350] [2023-08-23 23:08:18,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883004350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:18,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:18,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:18,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224542295] [2023-08-23 23:08:18,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:18,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-23 23:08:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:18,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-23 23:08:18,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-23 23:08:18,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:18,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:18,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:18,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:18,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:18,995 INFO L124 PetriNetUnfolderBase]: 2255/3357 cut-off events. [2023-08-23 23:08:18,995 INFO L125 PetriNetUnfolderBase]: For 5612/5612 co-relation queries the response was YES. [2023-08-23 23:08:19,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12611 conditions, 3357 events. 2255/3357 cut-off events. For 5612/5612 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15814 event pairs, 462 based on Foata normal form. 81/3438 useless extension candidates. Maximal degree in co-relation 12590. Up to 1464 conditions per place. [2023-08-23 23:08:19,016 INFO L140 encePairwiseOnDemand]: 185/198 looper letters, 47 selfloop transitions, 20 changer transitions 28/95 dead transitions. [2023-08-23 23:08:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 95 transitions, 771 flow [2023-08-23 23:08:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:08:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:08:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 532 transitions. [2023-08-23 23:08:19,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2023-08-23 23:08:19,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 532 transitions. [2023-08-23 23:08:19,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 532 transitions. [2023-08-23 23:08:19,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:19,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 532 transitions. [2023-08-23 23:08:19,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.66666666666667) internal successors, (532), 6 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,023 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,024 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 240 flow. Second operand 6 states and 532 transitions. [2023-08-23 23:08:19,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 95 transitions, 771 flow [2023-08-23 23:08:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 95 transitions, 751 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:19,046 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 393 flow [2023-08-23 23:08:19,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=393, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-08-23 23:08:19,048 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-08-23 23:08:19,048 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 393 flow [2023-08-23 23:08:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:19,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:19,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:08:19,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:19,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash 923028933, now seen corresponding path program 2 times [2023-08-23 23:08:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:19,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129283718] [2023-08-23 23:08:19,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:19,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:19,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129283718] [2023-08-23 23:08:19,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129283718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:19,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:08:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722567627] [2023-08-23 23:08:19,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:08:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:08:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:08:19,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 198 [2023-08-23 23:08:19,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:19,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:19,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 198 [2023-08-23 23:08:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:20,597 INFO L124 PetriNetUnfolderBase]: 1890/2844 cut-off events. [2023-08-23 23:08:20,598 INFO L125 PetriNetUnfolderBase]: For 7612/7612 co-relation queries the response was YES. [2023-08-23 23:08:20,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12256 conditions, 2844 events. 1890/2844 cut-off events. For 7612/7612 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13484 event pairs, 251 based on Foata normal form. 81/2925 useless extension candidates. Maximal degree in co-relation 12232. Up to 1219 conditions per place. [2023-08-23 23:08:20,612 INFO L140 encePairwiseOnDemand]: 187/198 looper letters, 51 selfloop transitions, 17 changer transitions 54/122 dead transitions. [2023-08-23 23:08:20,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 122 transitions, 1236 flow [2023-08-23 23:08:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-23 23:08:20,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-08-23 23:08:20,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-23 23:08:20,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-23 23:08:20,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:20,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-23 23:08:20,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:20,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:20,619 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:20,619 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 393 flow. Second operand 7 states and 605 transitions. [2023-08-23 23:08:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 122 transitions, 1236 flow [2023-08-23 23:08:20,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 122 transitions, 1211 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:20,634 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 412 flow [2023-08-23 23:08:20,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-23 23:08:20,635 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-23 23:08:20,635 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 412 flow [2023-08-23 23:08:20,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:20,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:20,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-23 23:08:20,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:20,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash -974768166, now seen corresponding path program 1 times [2023-08-23 23:08:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:20,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909937876] [2023-08-23 23:08:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:20,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:21,601 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 23:08:21,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:21,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909937876] [2023-08-23 23:08:21,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909937876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:21,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:21,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-23 23:08:21,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800209559] [2023-08-23 23:08:21,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:21,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-23 23:08:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:21,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-23 23:08:21,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-23 23:08:21,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 198 [2023-08-23 23:08:21,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:21,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:21,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 198 [2023-08-23 23:08:21,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:22,273 INFO L124 PetriNetUnfolderBase]: 1093/1681 cut-off events. [2023-08-23 23:08:22,273 INFO L125 PetriNetUnfolderBase]: For 5601/5601 co-relation queries the response was YES. [2023-08-23 23:08:22,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7744 conditions, 1681 events. 1093/1681 cut-off events. For 5601/5601 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6992 event pairs, 531 based on Foata normal form. 53/1734 useless extension candidates. Maximal degree in co-relation 7716. Up to 1269 conditions per place. [2023-08-23 23:08:22,287 INFO L140 encePairwiseOnDemand]: 185/198 looper letters, 48 selfloop transitions, 26 changer transitions 18/92 dead transitions. [2023-08-23 23:08:22,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 864 flow [2023-08-23 23:08:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:08:22,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:08:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 678 transitions. [2023-08-23 23:08:22,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2023-08-23 23:08:22,291 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 678 transitions. [2023-08-23 23:08:22,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 678 transitions. [2023-08-23 23:08:22,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:22,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 678 transitions. [2023-08-23 23:08:22,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,295 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,295 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 412 flow. Second operand 8 states and 678 transitions. [2023-08-23 23:08:22,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 864 flow [2023-08-23 23:08:22,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 793 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:22,308 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 461 flow [2023-08-23 23:08:22,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=461, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-08-23 23:08:22,309 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2023-08-23 23:08:22,309 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 461 flow [2023-08-23 23:08:22,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:22,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:22,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-23 23:08:22,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:22,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:22,311 INFO L85 PathProgramCache]: Analyzing trace with hash 449698731, now seen corresponding path program 1 times [2023-08-23 23:08:22,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:22,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036767906] [2023-08-23 23:08:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:22,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:22,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036767906] [2023-08-23 23:08:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036767906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:22,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906997806] [2023-08-23 23:08:22,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:22,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:22,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-23 23:08:22,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 461 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:22,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-23 23:08:22,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:22,890 INFO L124 PetriNetUnfolderBase]: 1473/2283 cut-off events. [2023-08-23 23:08:22,890 INFO L125 PetriNetUnfolderBase]: For 8518/8553 co-relation queries the response was YES. [2023-08-23 23:08:22,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 2283 events. 1473/2283 cut-off events. For 8518/8553 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11010 event pairs, 604 based on Foata normal form. 85/2319 useless extension candidates. Maximal degree in co-relation 10212. Up to 1088 conditions per place. [2023-08-23 23:08:22,913 INFO L140 encePairwiseOnDemand]: 194/198 looper letters, 47 selfloop transitions, 4 changer transitions 23/78 dead transitions. [2023-08-23 23:08:22,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 776 flow [2023-08-23 23:08:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:08:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:08:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 487 transitions. [2023-08-23 23:08:22,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919191919191919 [2023-08-23 23:08:22,915 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 487 transitions. [2023-08-23 23:08:22,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 487 transitions. [2023-08-23 23:08:22,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:22,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 487 transitions. [2023-08-23 23:08:22,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,918 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 461 flow. Second operand 5 states and 487 transitions. [2023-08-23 23:08:22,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 776 flow [2023-08-23 23:08:22,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 723 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-23 23:08:22,937 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 320 flow [2023-08-23 23:08:22,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-08-23 23:08:22,942 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-08-23 23:08:22,942 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 320 flow [2023-08-23 23:08:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:22,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:22,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:22,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-23 23:08:22,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:22,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash -320624987, now seen corresponding path program 1 times [2023-08-23 23:08:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:22,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716348445] [2023-08-23 23:08:22,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:23,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:23,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:23,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716348445] [2023-08-23 23:08:23,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716348445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:23,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:23,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-23 23:08:23,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818347345] [2023-08-23 23:08:23,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:23,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-23 23:08:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:23,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-23 23:08:23,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-23 23:08:23,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-23 23:08:23,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 320 flow. Second operand has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 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 23:08:23,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:23,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-23 23:08:23,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:24,562 INFO L124 PetriNetUnfolderBase]: 1596/2542 cut-off events. [2023-08-23 23:08:24,562 INFO L125 PetriNetUnfolderBase]: For 10133/10165 co-relation queries the response was YES. [2023-08-23 23:08:24,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11349 conditions, 2542 events. 1596/2542 cut-off events. For 10133/10165 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12938 event pairs, 213 based on Foata normal form. 150/2680 useless extension candidates. Maximal degree in co-relation 11318. Up to 1413 conditions per place. [2023-08-23 23:08:24,577 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 70 selfloop transitions, 19 changer transitions 46/137 dead transitions. [2023-08-23 23:08:24,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 1319 flow [2023-08-23 23:08:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-23 23:08:24,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-23 23:08:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1090 transitions. [2023-08-23 23:08:24,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45875420875420875 [2023-08-23 23:08:24,581 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1090 transitions. [2023-08-23 23:08:24,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1090 transitions. [2023-08-23 23:08:24,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:24,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1090 transitions. [2023-08-23 23:08:24,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 90.83333333333333) internal successors, (1090), 12 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:24,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:24,590 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 198.0) internal successors, (2574), 13 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:24,590 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 320 flow. Second operand 12 states and 1090 transitions. [2023-08-23 23:08:24,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 1319 flow [2023-08-23 23:08:24,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 137 transitions, 1160 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-23 23:08:24,617 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 485 flow [2023-08-23 23:08:24,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=485, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-23 23:08:24,620 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 35 predicate places. [2023-08-23 23:08:24,621 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 485 flow [2023-08-23 23:08:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.66666666666667) internal successors, (753), 9 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 23:08:24,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:24,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-23 23:08:24,621 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:24,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1926253351, now seen corresponding path program 2 times [2023-08-23 23:08:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:24,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503805599] [2023-08-23 23:08:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:25,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:25,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503805599] [2023-08-23 23:08:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503805599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:25,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:25,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-23 23:08:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386844321] [2023-08-23 23:08:25,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-23 23:08:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-23 23:08:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-23 23:08:25,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 485 flow. Second operand has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:25,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:25,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:25,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:26,437 INFO L124 PetriNetUnfolderBase]: 1548/2487 cut-off events. [2023-08-23 23:08:26,437 INFO L125 PetriNetUnfolderBase]: For 13110/13110 co-relation queries the response was YES. [2023-08-23 23:08:26,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11674 conditions, 2487 events. 1548/2487 cut-off events. For 13110/13110 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12522 event pairs, 600 based on Foata normal form. 52/2539 useless extension candidates. Maximal degree in co-relation 11639. Up to 1915 conditions per place. [2023-08-23 23:08:26,453 INFO L140 encePairwiseOnDemand]: 185/198 looper letters, 61 selfloop transitions, 26 changer transitions 19/106 dead transitions. [2023-08-23 23:08:26,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 106 transitions, 1057 flow [2023-08-23 23:08:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-23 23:08:26,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-23 23:08:26,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 776 transitions. [2023-08-23 23:08:26,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43546576879910215 [2023-08-23 23:08:26,456 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 776 transitions. [2023-08-23 23:08:26,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 776 transitions. [2023-08-23 23:08:26,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:26,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 776 transitions. [2023-08-23 23:08:26,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.22222222222223) internal successors, (776), 9 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,461 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 198.0) internal successors, (1980), 10 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,461 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 485 flow. Second operand 9 states and 776 transitions. [2023-08-23 23:08:26,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 106 transitions, 1057 flow [2023-08-23 23:08:26,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 106 transitions, 1001 flow, removed 25 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:26,522 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 635 flow [2023-08-23 23:08:26,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2023-08-23 23:08:26,523 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-08-23 23:08:26,523 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 635 flow [2023-08-23 23:08:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:26,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:26,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-23 23:08:26,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:26,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash 59985457, now seen corresponding path program 3 times [2023-08-23 23:08:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462851298] [2023-08-23 23:08:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:26,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:27,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:27,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462851298] [2023-08-23 23:08:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462851298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-23 23:08:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065845852] [2023-08-23 23:08:27,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:27,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:08:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:08:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:08:27,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 198 [2023-08-23 23:08:27,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 83.875) internal successors, (671), 8 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:27,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 198 [2023-08-23 23:08:27,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:27,661 INFO L124 PetriNetUnfolderBase]: 1349/2233 cut-off events. [2023-08-23 23:08:27,661 INFO L125 PetriNetUnfolderBase]: For 13434/13492 co-relation queries the response was YES. [2023-08-23 23:08:27,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11540 conditions, 2233 events. 1349/2233 cut-off events. For 13434/13492 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11646 event pairs, 522 based on Foata normal form. 101/2328 useless extension candidates. Maximal degree in co-relation 11505. Up to 1809 conditions per place. [2023-08-23 23:08:27,673 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 68 selfloop transitions, 18 changer transitions 21/110 dead transitions. [2023-08-23 23:08:27,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 1281 flow [2023-08-23 23:08:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:08:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:08:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 728 transitions. [2023-08-23 23:08:27,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2023-08-23 23:08:27,675 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 728 transitions. [2023-08-23 23:08:27,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 728 transitions. [2023-08-23 23:08:27,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:27,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 728 transitions. [2023-08-23 23:08:27,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,680 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,680 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 635 flow. Second operand 8 states and 728 transitions. [2023-08-23 23:08:27,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 1281 flow [2023-08-23 23:08:27,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 1233 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:27,702 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 726 flow [2023-08-23 23:08:27,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=726, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-08-23 23:08:27,704 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 42 predicate places. [2023-08-23 23:08:27,704 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 726 flow [2023-08-23 23:08:27,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.875) internal successors, (671), 8 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:27,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:27,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:27,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-23 23:08:27,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:27,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash 2073026587, now seen corresponding path program 1 times [2023-08-23 23:08:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:27,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025881415] [2023-08-23 23:08:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:27,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025881415] [2023-08-23 23:08:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025881415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:28,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:28,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228249038] [2023-08-23 23:08:28,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:28,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:28,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:28,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:28,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:28,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 726 flow. Second operand has 10 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:28,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:28,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:28,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:29,553 INFO L124 PetriNetUnfolderBase]: 1827/3095 cut-off events. [2023-08-23 23:08:29,553 INFO L125 PetriNetUnfolderBase]: For 20439/20522 co-relation queries the response was YES. [2023-08-23 23:08:29,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16219 conditions, 3095 events. 1827/3095 cut-off events. For 20439/20522 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 18455 event pairs, 356 based on Foata normal form. 123/3208 useless extension candidates. Maximal degree in co-relation 16181. Up to 1554 conditions per place. [2023-08-23 23:08:29,571 INFO L140 encePairwiseOnDemand]: 190/198 looper letters, 74 selfloop transitions, 21 changer transitions 16/114 dead transitions. [2023-08-23 23:08:29,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 114 transitions, 1425 flow [2023-08-23 23:08:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2023-08-23 23:08:29,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357864357864358 [2023-08-23 23:08:29,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2023-08-23 23:08:29,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2023-08-23 23:08:29,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:29,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2023-08-23 23:08:29,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:29,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:29,578 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:29,578 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 726 flow. Second operand 7 states and 604 transitions. [2023-08-23 23:08:29,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 114 transitions, 1425 flow [2023-08-23 23:08:29,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 1392 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-23 23:08:29,608 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 890 flow [2023-08-23 23:08:29,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=890, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2023-08-23 23:08:29,609 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2023-08-23 23:08:29,609 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 890 flow [2023-08-23 23:08:29,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 78.6) internal successors, (786), 10 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:29,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:29,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:29,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-23 23:08:29,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:29,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:29,610 INFO L85 PathProgramCache]: Analyzing trace with hash -981457993, now seen corresponding path program 2 times [2023-08-23 23:08:29,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:29,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114277185] [2023-08-23 23:08:29,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114277185] [2023-08-23 23:08:30,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114277185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:30,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:30,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:30,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404777734] [2023-08-23 23:08:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:30,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:30,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 198 [2023-08-23 23:08:30,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:30,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:30,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 198 [2023-08-23 23:08:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:31,586 INFO L124 PetriNetUnfolderBase]: 1933/3336 cut-off events. [2023-08-23 23:08:31,586 INFO L125 PetriNetUnfolderBase]: For 26563/26652 co-relation queries the response was YES. [2023-08-23 23:08:31,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 3336 events. 1933/3336 cut-off events. For 26563/26652 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 20663 event pairs, 450 based on Foata normal form. 145/3470 useless extension candidates. Maximal degree in co-relation 17937. Up to 2269 conditions per place. [2023-08-23 23:08:31,604 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 87 selfloop transitions, 34 changer transitions 32/156 dead transitions. [2023-08-23 23:08:31,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 156 transitions, 2058 flow [2023-08-23 23:08:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-23 23:08:31,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-23 23:08:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 927 transitions. [2023-08-23 23:08:31,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2023-08-23 23:08:31,612 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 927 transitions. [2023-08-23 23:08:31,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 927 transitions. [2023-08-23 23:08:31,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:31,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 927 transitions. [2023-08-23 23:08:31,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.27272727272727) internal successors, (927), 11 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:31,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:31,617 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:31,618 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 890 flow. Second operand 11 states and 927 transitions. [2023-08-23 23:08:31,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 156 transitions, 2058 flow [2023-08-23 23:08:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 156 transitions, 2030 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:31,650 INFO L231 Difference]: Finished difference. Result has 93 places, 88 transitions, 1289 flow [2023-08-23 23:08:31,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1289, PETRI_PLACES=93, PETRI_TRANSITIONS=88} [2023-08-23 23:08:31,651 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 58 predicate places. [2023-08-23 23:08:31,651 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 88 transitions, 1289 flow [2023-08-23 23:08:31,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:31,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:31,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:31,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-23 23:08:31,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:31,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:31,652 INFO L85 PathProgramCache]: Analyzing trace with hash -54076469, now seen corresponding path program 3 times [2023-08-23 23:08:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:31,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050815976] [2023-08-23 23:08:31,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:31,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:32,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050815976] [2023-08-23 23:08:32,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050815976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:32,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:32,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:32,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059850593] [2023-08-23 23:08:32,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:32,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:32,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:32,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:32,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 198 [2023-08-23 23:08:32,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 88 transitions, 1289 flow. Second operand has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:32,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:32,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 198 [2023-08-23 23:08:32,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:33,537 INFO L124 PetriNetUnfolderBase]: 1794/3165 cut-off events. [2023-08-23 23:08:33,537 INFO L125 PetriNetUnfolderBase]: For 34285/34367 co-relation queries the response was YES. [2023-08-23 23:08:33,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18850 conditions, 3165 events. 1794/3165 cut-off events. For 34285/34367 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 19866 event pairs, 747 based on Foata normal form. 104/3254 useless extension candidates. Maximal degree in co-relation 18805. Up to 2711 conditions per place. [2023-08-23 23:08:33,554 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 101 selfloop transitions, 18 changer transitions 20/142 dead transitions. [2023-08-23 23:08:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 2104 flow [2023-08-23 23:08:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-23 23:08:33,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-23 23:08:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2023-08-23 23:08:33,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42474747474747476 [2023-08-23 23:08:33,559 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2023-08-23 23:08:33,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2023-08-23 23:08:33,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:33,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2023-08-23 23:08:33,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:33,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:33,565 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:33,565 INFO L175 Difference]: Start difference. First operand has 93 places, 88 transitions, 1289 flow. Second operand 10 states and 841 transitions. [2023-08-23 23:08:33,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 2104 flow [2023-08-23 23:08:33,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 2059 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:33,618 INFO L231 Difference]: Finished difference. Result has 97 places, 90 transitions, 1352 flow [2023-08-23 23:08:33,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=97, PETRI_TRANSITIONS=90} [2023-08-23 23:08:33,619 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 62 predicate places. [2023-08-23 23:08:33,619 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 90 transitions, 1352 flow [2023-08-23 23:08:33,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 77.6) internal successors, (776), 10 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:33,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:33,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:33,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-23 23:08:33,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:33,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:33,620 INFO L85 PathProgramCache]: Analyzing trace with hash -449330100, now seen corresponding path program 1 times [2023-08-23 23:08:33,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:33,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408370822] [2023-08-23 23:08:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:33,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408370822] [2023-08-23 23:08:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408370822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485691128] [2023-08-23 23:08:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:35,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 198 [2023-08-23 23:08:35,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 90 transitions, 1352 flow. Second operand has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:35,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:35,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 198 [2023-08-23 23:08:35,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:35,887 INFO L124 PetriNetUnfolderBase]: 1866/3318 cut-off events. [2023-08-23 23:08:35,887 INFO L125 PetriNetUnfolderBase]: For 40064/40153 co-relation queries the response was YES. [2023-08-23 23:08:35,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20113 conditions, 3318 events. 1866/3318 cut-off events. For 40064/40153 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 21292 event pairs, 819 based on Foata normal form. 115/3424 useless extension candidates. Maximal degree in co-relation 20067. Up to 2668 conditions per place. [2023-08-23 23:08:35,900 INFO L140 encePairwiseOnDemand]: 187/198 looper letters, 108 selfloop transitions, 39 changer transitions 25/175 dead transitions. [2023-08-23 23:08:35,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 175 transitions, 2610 flow [2023-08-23 23:08:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-23 23:08:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-23 23:08:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 973 transitions. [2023-08-23 23:08:35,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44674012855831036 [2023-08-23 23:08:35,903 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 973 transitions. [2023-08-23 23:08:35,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 973 transitions. [2023-08-23 23:08:35,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:35,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 973 transitions. [2023-08-23 23:08:35,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 88.45454545454545) internal successors, (973), 11 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:35,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:35,909 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 198.0) internal successors, (2376), 12 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:35,909 INFO L175 Difference]: Start difference. First operand has 97 places, 90 transitions, 1352 flow. Second operand 11 states and 973 transitions. [2023-08-23 23:08:35,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 175 transitions, 2610 flow [2023-08-23 23:08:35,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 175 transitions, 2543 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:35,961 INFO L231 Difference]: Finished difference. Result has 104 places, 112 transitions, 1757 flow [2023-08-23 23:08:35,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1757, PETRI_PLACES=104, PETRI_TRANSITIONS=112} [2023-08-23 23:08:35,962 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 69 predicate places. [2023-08-23 23:08:35,962 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 112 transitions, 1757 flow [2023-08-23 23:08:35,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:35,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:35,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:35,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-23 23:08:35,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:35,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash 327332153, now seen corresponding path program 4 times [2023-08-23 23:08:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:35,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217187261] [2023-08-23 23:08:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:35,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217187261] [2023-08-23 23:08:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217187261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:36,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996243332] [2023-08-23 23:08:36,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:36,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:36,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 198 [2023-08-23 23:08:36,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 112 transitions, 1757 flow. Second operand has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:36,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:36,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 198 [2023-08-23 23:08:36,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:37,373 INFO L124 PetriNetUnfolderBase]: 1762/3152 cut-off events. [2023-08-23 23:08:37,373 INFO L125 PetriNetUnfolderBase]: For 39056/39141 co-relation queries the response was YES. [2023-08-23 23:08:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19291 conditions, 3152 events. 1762/3152 cut-off events. For 39056/39141 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 20066 event pairs, 769 based on Foata normal form. 107/3250 useless extension candidates. Maximal degree in co-relation 19242. Up to 2632 conditions per place. [2023-08-23 23:08:37,395 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 113 selfloop transitions, 27 changer transitions 19/162 dead transitions. [2023-08-23 23:08:37,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 2695 flow [2023-08-23 23:08:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-23 23:08:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-23 23:08:37,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 710 transitions. [2023-08-23 23:08:37,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823232323232326 [2023-08-23 23:08:37,398 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 710 transitions. [2023-08-23 23:08:37,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 710 transitions. [2023-08-23 23:08:37,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:37,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 710 transitions. [2023-08-23 23:08:37,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.75) internal successors, (710), 8 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:37,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:37,403 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 198.0) internal successors, (1782), 9 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:37,403 INFO L175 Difference]: Start difference. First operand has 104 places, 112 transitions, 1757 flow. Second operand 8 states and 710 transitions. [2023-08-23 23:08:37,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 2695 flow [2023-08-23 23:08:37,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 2569 flow, removed 63 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:37,477 INFO L231 Difference]: Finished difference. Result has 110 places, 117 transitions, 1862 flow [2023-08-23 23:08:37,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1862, PETRI_PLACES=110, PETRI_TRANSITIONS=117} [2023-08-23 23:08:37,478 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 75 predicate places. [2023-08-23 23:08:37,478 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 117 transitions, 1862 flow [2023-08-23 23:08:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.6) internal successors, (816), 10 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:37,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:37,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:37,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-23 23:08:37,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:37,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:37,479 INFO L85 PathProgramCache]: Analyzing trace with hash -458249790, now seen corresponding path program 2 times [2023-08-23 23:08:37,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:37,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351814272] [2023-08-23 23:08:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:39,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:39,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351814272] [2023-08-23 23:08:39,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351814272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:39,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:39,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:39,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590464871] [2023-08-23 23:08:39,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:39,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:39,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:39,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:39,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:39,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 198 [2023-08-23 23:08:39,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 1862 flow. Second operand has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:39,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:39,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 198 [2023-08-23 23:08:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:40,062 INFO L124 PetriNetUnfolderBase]: 1783/3251 cut-off events. [2023-08-23 23:08:40,063 INFO L125 PetriNetUnfolderBase]: For 43676/43768 co-relation queries the response was YES. [2023-08-23 23:08:40,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20125 conditions, 3251 events. 1783/3251 cut-off events. For 43676/43768 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 21362 event pairs, 829 based on Foata normal form. 118/3366 useless extension candidates. Maximal degree in co-relation 20073. Up to 2541 conditions per place. [2023-08-23 23:08:40,078 INFO L140 encePairwiseOnDemand]: 187/198 looper letters, 104 selfloop transitions, 44 changer transitions 40/191 dead transitions. [2023-08-23 23:08:40,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 3191 flow [2023-08-23 23:08:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-23 23:08:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-23 23:08:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 886 transitions. [2023-08-23 23:08:40,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44747474747474747 [2023-08-23 23:08:40,080 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 886 transitions. [2023-08-23 23:08:40,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 886 transitions. [2023-08-23 23:08:40,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:40,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 886 transitions. [2023-08-23 23:08:40,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.6) internal successors, (886), 10 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:40,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:40,084 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 198.0) internal successors, (2178), 11 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:40,085 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 1862 flow. Second operand 10 states and 886 transitions. [2023-08-23 23:08:40,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 3191 flow [2023-08-23 23:08:40,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 191 transitions, 3129 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-23 23:08:40,160 INFO L231 Difference]: Finished difference. Result has 119 places, 123 transitions, 2151 flow [2023-08-23 23:08:40,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2151, PETRI_PLACES=119, PETRI_TRANSITIONS=123} [2023-08-23 23:08:40,161 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 84 predicate places. [2023-08-23 23:08:40,161 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 123 transitions, 2151 flow [2023-08-23 23:08:40,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:40,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:40,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:40,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-23 23:08:40,162 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:40,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1630073363, now seen corresponding path program 5 times [2023-08-23 23:08:40,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:40,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511734009] [2023-08-23 23:08:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511734009] [2023-08-23 23:08:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511734009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:41,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:41,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:41,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779765611] [2023-08-23 23:08:41,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:41,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:41,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 198 [2023-08-23 23:08:41,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 123 transitions, 2151 flow. Second operand has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:41,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 198 [2023-08-23 23:08:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:41,688 INFO L124 PetriNetUnfolderBase]: 1548/2809 cut-off events. [2023-08-23 23:08:41,689 INFO L125 PetriNetUnfolderBase]: For 37668/37727 co-relation queries the response was YES. [2023-08-23 23:08:41,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17563 conditions, 2809 events. 1548/2809 cut-off events. For 37668/37727 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 17772 event pairs, 778 based on Foata normal form. 93/2895 useless extension candidates. Maximal degree in co-relation 17507. Up to 1710 conditions per place. [2023-08-23 23:08:41,702 INFO L140 encePairwiseOnDemand]: 192/198 looper letters, 62 selfloop transitions, 25 changer transitions 74/163 dead transitions. [2023-08-23 23:08:41,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 163 transitions, 2894 flow [2023-08-23 23:08:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:41,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-08-23 23:08:41,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2023-08-23 23:08:41,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-08-23 23:08:41,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-08-23 23:08:41,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:41,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-08-23 23:08:41,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,717 INFO L175 Difference]: Start difference. First operand has 119 places, 123 transitions, 2151 flow. Second operand 7 states and 618 transitions. [2023-08-23 23:08:41,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 163 transitions, 2894 flow [2023-08-23 23:08:41,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 163 transitions, 2799 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-08-23 23:08:41,794 INFO L231 Difference]: Finished difference. Result has 119 places, 72 transitions, 1248 flow [2023-08-23 23:08:41,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1248, PETRI_PLACES=119, PETRI_TRANSITIONS=72} [2023-08-23 23:08:41,795 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 84 predicate places. [2023-08-23 23:08:41,795 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 72 transitions, 1248 flow [2023-08-23 23:08:41,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.6) internal successors, (806), 10 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:41,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:41,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-23 23:08:41,796 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:41,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash -272155952, now seen corresponding path program 1 times [2023-08-23 23:08:41,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:41,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502839299] [2023-08-23 23:08:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:41,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:41,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:41,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:41,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502839299] [2023-08-23 23:08:41,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502839299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:41,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:41,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:08:41,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944297873] [2023-08-23 23:08:41,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:41,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:08:41,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:08:41,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:08:41,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-23 23:08:41,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 72 transitions, 1248 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:41,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:41,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-23 23:08:41,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:42,128 INFO L124 PetriNetUnfolderBase]: 624/1143 cut-off events. [2023-08-23 23:08:42,128 INFO L125 PetriNetUnfolderBase]: For 16662/16702 co-relation queries the response was YES. [2023-08-23 23:08:42,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7012 conditions, 1143 events. 624/1143 cut-off events. For 16662/16702 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6188 event pairs, 148 based on Foata normal form. 62/1202 useless extension candidates. Maximal degree in co-relation 6970. Up to 1017 conditions per place. [2023-08-23 23:08:42,133 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 73 selfloop transitions, 4 changer transitions 1/82 dead transitions. [2023-08-23 23:08:42,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 82 transitions, 1449 flow [2023-08-23 23:08:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:08:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:08:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-23 23:08:42,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49663299663299665 [2023-08-23 23:08:42,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-23 23:08:42,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-23 23:08:42,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:42,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-23 23:08:42,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,136 INFO L175 Difference]: Start difference. First operand has 119 places, 72 transitions, 1248 flow. Second operand 3 states and 295 transitions. [2023-08-23 23:08:42,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 82 transitions, 1449 flow [2023-08-23 23:08:42,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 1230 flow, removed 38 selfloop flow, removed 29 redundant places. [2023-08-23 23:08:42,150 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 775 flow [2023-08-23 23:08:42,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=775, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-08-23 23:08:42,150 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 38 predicate places. [2023-08-23 23:08:42,150 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 775 flow [2023-08-23 23:08:42,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:42,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:42,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-23 23:08:42,151 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:42,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:42,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1463852278, now seen corresponding path program 1 times [2023-08-23 23:08:42,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:42,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660178278] [2023-08-23 23:08:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:42,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:42,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660178278] [2023-08-23 23:08:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660178278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:42,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:42,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:08:42,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618951277] [2023-08-23 23:08:42,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:08:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:08:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:08:42,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-23 23:08:42,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 775 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:42,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-23 23:08:42,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:42,448 INFO L124 PetriNetUnfolderBase]: 290/593 cut-off events. [2023-08-23 23:08:42,448 INFO L125 PetriNetUnfolderBase]: For 5488/5499 co-relation queries the response was YES. [2023-08-23 23:08:42,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3511 conditions, 593 events. 290/593 cut-off events. For 5488/5499 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2907 event pairs, 39 based on Foata normal form. 78/668 useless extension candidates. Maximal degree in co-relation 3482. Up to 290 conditions per place. [2023-08-23 23:08:42,451 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 75 selfloop transitions, 7 changer transitions 8/94 dead transitions. [2023-08-23 23:08:42,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 1377 flow [2023-08-23 23:08:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:08:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:08:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 393 transitions. [2023-08-23 23:08:42,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962121212121212 [2023-08-23 23:08:42,452 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 393 transitions. [2023-08-23 23:08:42,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 393 transitions. [2023-08-23 23:08:42,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:42,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 393 transitions. [2023-08-23 23:08:42,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 198.0) internal successors, (990), 5 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,454 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 775 flow. Second operand 4 states and 393 transitions. [2023-08-23 23:08:42,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 1377 flow [2023-08-23 23:08:42,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 94 transitions, 1369 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-23 23:08:42,463 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 692 flow [2023-08-23 23:08:42,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=692, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2023-08-23 23:08:42,463 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2023-08-23 23:08:42,463 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 692 flow [2023-08-23 23:08:42,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:42,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:42,464 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] [2023-08-23 23:08:42,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-23 23:08:42,464 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:42,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 406376295, now seen corresponding path program 1 times [2023-08-23 23:08:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005990031] [2023-08-23 23:08:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005990031] [2023-08-23 23:08:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005990031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:43,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:43,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-23 23:08:43,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981629447] [2023-08-23 23:08:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:43,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-23 23:08:43,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:43,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-23 23:08:43,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-08-23 23:08:43,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 198 [2023-08-23 23:08:43,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 692 flow. Second operand has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:43,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 198 [2023-08-23 23:08:43,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:43,307 INFO L124 PetriNetUnfolderBase]: 388/798 cut-off events. [2023-08-23 23:08:43,307 INFO L125 PetriNetUnfolderBase]: For 6985/6985 co-relation queries the response was YES. [2023-08-23 23:08:43,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5046 conditions, 798 events. 388/798 cut-off events. For 6985/6985 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4085 event pairs, 100 based on Foata normal form. 5/803 useless extension candidates. Maximal degree in co-relation 5016. Up to 374 conditions per place. [2023-08-23 23:08:43,310 INFO L140 encePairwiseOnDemand]: 189/198 looper letters, 51 selfloop transitions, 10 changer transitions 33/94 dead transitions. [2023-08-23 23:08:43,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 1268 flow [2023-08-23 23:08:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-23 23:08:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-23 23:08:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2023-08-23 23:08:43,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424963924963925 [2023-08-23 23:08:43,312 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 589 transitions. [2023-08-23 23:08:43,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 589 transitions. [2023-08-23 23:08:43,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:43,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 589 transitions. [2023-08-23 23:08:43,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.14285714285714) internal successors, (589), 7 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 198.0) internal successors, (1584), 8 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,316 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 692 flow. Second operand 7 states and 589 transitions. [2023-08-23 23:08:43,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 1268 flow [2023-08-23 23:08:43,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 94 transitions, 1241 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-23 23:08:43,328 INFO L231 Difference]: Finished difference. Result has 83 places, 50 transitions, 651 flow [2023-08-23 23:08:43,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=651, PETRI_PLACES=83, PETRI_TRANSITIONS=50} [2023-08-23 23:08:43,329 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 48 predicate places. [2023-08-23 23:08:43,329 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 50 transitions, 651 flow [2023-08-23 23:08:43,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:43,329 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] [2023-08-23 23:08:43,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-23 23:08:43,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:43,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:43,330 INFO L85 PathProgramCache]: Analyzing trace with hash 499402769, now seen corresponding path program 2 times [2023-08-23 23:08:43,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:43,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328883998] [2023-08-23 23:08:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:43,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:43,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328883998] [2023-08-23 23:08:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328883998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:43,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:43,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:08:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781655363] [2023-08-23 23:08:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:43,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:08:43,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:43,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:08:43,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:08:43,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 198 [2023-08-23 23:08:43,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 50 transitions, 651 flow. Second operand has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:43,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 198 [2023-08-23 23:08:43,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:43,569 INFO L124 PetriNetUnfolderBase]: 151/323 cut-off events. [2023-08-23 23:08:43,570 INFO L125 PetriNetUnfolderBase]: For 3453/3457 co-relation queries the response was YES. [2023-08-23 23:08:43,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 323 events. 151/323 cut-off events. For 3453/3457 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1357 event pairs, 20 based on Foata normal form. 30/351 useless extension candidates. Maximal degree in co-relation 1987. Up to 128 conditions per place. [2023-08-23 23:08:43,571 INFO L140 encePairwiseOnDemand]: 193/198 looper letters, 62 selfloop transitions, 10 changer transitions 5/80 dead transitions. [2023-08-23 23:08:43,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 1231 flow [2023-08-23 23:08:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-23 23:08:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-23 23:08:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-08-23 23:08:43,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48383838383838385 [2023-08-23 23:08:43,572 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-08-23 23:08:43,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-08-23 23:08:43,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:43,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-08-23 23:08:43,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 198.0) internal successors, (1188), 6 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,575 INFO L175 Difference]: Start difference. First operand has 83 places, 50 transitions, 651 flow. Second operand 5 states and 479 transitions. [2023-08-23 23:08:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 1231 flow [2023-08-23 23:08:43,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 1021 flow, removed 63 selfloop flow, removed 13 redundant places. [2023-08-23 23:08:43,581 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 501 flow [2023-08-23 23:08:43,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=501, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2023-08-23 23:08:43,582 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2023-08-23 23:08:43,582 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 501 flow [2023-08-23 23:08:43,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.6) internal successors, (453), 5 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:43,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:43,582 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] [2023-08-23 23:08:43,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-23 23:08:43,582 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:43,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1519914854, now seen corresponding path program 1 times [2023-08-23 23:08:43,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:43,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241211341] [2023-08-23 23:08:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:43,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:08:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:08:44,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:08:44,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241211341] [2023-08-23 23:08:44,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241211341] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:08:44,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:08:44,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-23 23:08:44,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877421759] [2023-08-23 23:08:44,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:08:44,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-23 23:08:44,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:08:44,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-23 23:08:44,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-23 23:08:44,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 198 [2023-08-23 23:08:44,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 501 flow. Second operand has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:44,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:08:44,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 198 [2023-08-23 23:08:44,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:08:45,098 INFO L124 PetriNetUnfolderBase]: 159/340 cut-off events. [2023-08-23 23:08:45,099 INFO L125 PetriNetUnfolderBase]: For 2305/2305 co-relation queries the response was YES. [2023-08-23 23:08:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 340 events. 159/340 cut-off events. For 2305/2305 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1324 event pairs, 32 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 1957. Up to 234 conditions per place. [2023-08-23 23:08:45,100 INFO L140 encePairwiseOnDemand]: 191/198 looper letters, 37 selfloop transitions, 8 changer transitions 22/68 dead transitions. [2023-08-23 23:08:45,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 757 flow [2023-08-23 23:08:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-23 23:08:45,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-23 23:08:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-08-23 23:08:45,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234006734006734 [2023-08-23 23:08:45,101 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-08-23 23:08:45,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-08-23 23:08:45,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:08:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-08-23 23:08:45,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:45,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:45,104 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:45,104 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 501 flow. Second operand 6 states and 503 transitions. [2023-08-23 23:08:45,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 757 flow [2023-08-23 23:08:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 656 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-08-23 23:08:45,110 INFO L231 Difference]: Finished difference. Result has 75 places, 38 transitions, 343 flow [2023-08-23 23:08:45,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=75, PETRI_TRANSITIONS=38} [2023-08-23 23:08:45,110 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 40 predicate places. [2023-08-23 23:08:45,110 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 38 transitions, 343 flow [2023-08-23 23:08:45,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.1) internal successors, (791), 10 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-23 23:08:45,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:08:45,111 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] [2023-08-23 23:08:45,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-23 23:08:45,111 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-23 23:08:45,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:08:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash -835412108, now seen corresponding path program 2 times [2023-08-23 23:08:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:08:45,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278852743] [2023-08-23 23:08:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:08:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:08:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:08:45,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-23 23:08:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-23 23:08:45,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-23 23:08:45,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-23 23:08:45,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-23 23:08:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-23 23:08:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-23 23:08:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-23 23:08:45,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-23 23:08:45,234 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-23 23:08:45,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-23 23:08:45,234 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:08:45,239 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:08:45,240 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:08:45,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:08:45 BasicIcfg [2023-08-23 23:08:45,286 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:08:45,286 INFO L158 Benchmark]: Toolchain (without parser) took 36471.29ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 874.5MB). Free memory was 337.1MB in the beginning and 476.4MB in the end (delta: -139.3MB). Peak memory consumption was 736.2MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,286 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 362.8MB. Free memory was 339.6MB in the beginning and 339.5MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.04ms. Allocated memory is still 362.8MB. Free memory was 337.1MB in the beginning and 310.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.39ms. Allocated memory is still 362.8MB. Free memory was 310.9MB in the beginning and 308.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,287 INFO L158 Benchmark]: Boogie Preprocessor took 60.01ms. Allocated memory is still 362.8MB. Free memory was 308.0MB in the beginning and 305.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,287 INFO L158 Benchmark]: RCFGBuilder took 695.29ms. Allocated memory is still 362.8MB. Free memory was 305.9MB in the beginning and 253.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,288 INFO L158 Benchmark]: TraceAbstraction took 35003.81ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 874.5MB). Free memory was 252.7MB in the beginning and 476.4MB in the end (delta: -223.7MB). Peak memory consumption was 652.4MB. Max. memory is 16.0GB. [2023-08-23 23:08:45,289 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 362.8MB. Free memory was 339.6MB in the beginning and 339.5MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 631.04ms. Allocated memory is still 362.8MB. Free memory was 337.1MB in the beginning and 310.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.39ms. Allocated memory is still 362.8MB. Free memory was 310.9MB in the beginning and 308.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 60.01ms. Allocated memory is still 362.8MB. Free memory was 308.0MB in the beginning and 305.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 695.29ms. Allocated memory is still 362.8MB. Free memory was 305.9MB in the beginning and 253.5MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 35003.81ms. Allocated memory was 362.8MB in the beginning and 1.2GB in the end (delta: 874.5MB). Free memory was 252.7MB in the beginning and 476.4MB in the end (delta: -223.7MB). Peak memory consumption was 652.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 112 PlacesBefore, 35 PlacesAfterwards, 104 TransitionsBefore, 26 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 5019 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1714, independent: 1554, independent conditional: 0, independent unconditional: 1554, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 963, independent: 937, independent conditional: 0, independent unconditional: 937, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1714, independent: 617, independent conditional: 0, independent unconditional: 617, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 963, unknown conditional: 0, unknown unconditional: 963] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1873; [L845] FCALL, FORK 0 pthread_create(&t1873, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1873, ((void *)0), P0, ((void *)0))=-2, t1873={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L846] 0 pthread_t t1874; [L847] FCALL, FORK 0 pthread_create(&t1874, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1874, ((void *)0), P1, ((void *)0))=-1, t1873={5:0}, t1874={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L848] 0 pthread_t t1875; [L849] FCALL, FORK 0 pthread_create(&t1875, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1875, ((void *)0), P2, ((void *)0))=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 y$w_buff1 = y$w_buff0 [L742] 1 y$w_buff0 = 2 [L743] 1 y$w_buff1_used = y$w_buff0_used [L744] 1 y$w_buff0_used = (_Bool)1 [L745] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L745] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L746] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L747] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L748] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L749] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L750] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L753] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L770] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L773] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L776] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L777] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L778] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L779] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L780] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L790] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L791] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L792] 3 y$flush_delayed = weak$$choice2 [L793] 3 y$mem_tmp = y [L794] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L795] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L796] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L797] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L798] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L799] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L800] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L801] 3 __unbuffered_p2_EAX = y [L802] 3 y = y$flush_delayed ? y$mem_tmp : y [L803] 3 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L806] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 3 y$flush_delayed = weak$$choice2 [L809] 3 y$mem_tmp = y [L810] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L811] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L812] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L813] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L814] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L815] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L816] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L817] 3 __unbuffered_p2_EBX = y [L818] 3 y = y$flush_delayed ? y$mem_tmp : y [L819] 3 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L822] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L823] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L824] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L825] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L826] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L756] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L757] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L758] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L759] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L760] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L765] 1 return 0; [L783] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L785] 2 return 0; [L829] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 3 return 0; [L851] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L853] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L853] RET 0 assume_abort_if_not(main$tmp_guard0) [L855] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L856] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L857] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L858] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L859] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1873={5:0}, t1874={6:0}, t1875={3:0}, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=1, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L862] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L863] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L864] 0 y$flush_delayed = weak$$choice2 [L865] 0 y$mem_tmp = y [L866] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L867] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L868] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L869] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L870] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L871] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L872] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L873] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 1) [L874] 0 y = y$flush_delayed ? y$mem_tmp : y [L875] 0 y$flush_delayed = (_Bool)0 [L877] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 134 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.8s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 928 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 928 mSDsluCounter, 136 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 376 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3602 IncrementalHoareTripleChecker+Invalid, 3978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 376 mSolverCounterUnsat, 47 mSDtfsCounter, 3602 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2151occurred in iteration=16, InterpolantAutomatonStates: 161, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 356 NumberOfCodeBlocks, 356 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 5376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-23 23:08:45,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...