/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 16:07:47,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 16:07:47,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 16:07:47,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 16:07:47,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 16:07:47,476 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 16:07:47,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 16:07:47,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 16:07:47,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 16:07:47,485 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 16:07:47,485 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 16:07:47,485 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 16:07:47,485 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 16:07:47,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 16:07:47,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 16:07:47,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 16:07:47,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 16:07:47,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 16:07:47,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 16:07:47,488 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 16:07:47,488 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 16:07:47,488 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 16:07:47,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 16:07:47,489 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 16:07:47,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 16:07:47,490 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 16:07:47,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 16:07:47,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:07:47,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 16:07:47,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 16:07:47,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 16:07:47,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 16:07:47,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 16:07:47,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 16:07:47,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 16:07:47,492 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 16:07:47,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 16:07:47,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 16:07:47,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 16:07:47,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 16:07:47,805 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 16:07:47,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-24 16:07:48,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 16:07:49,102 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 16:07:49,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-24 16:07:49,113 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3805e5aa6/7881178749a74af2a42652b9ac16bc4c/FLAG5b44e127c [2023-08-24 16:07:49,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3805e5aa6/7881178749a74af2a42652b9ac16bc4c [2023-08-24 16:07:49,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 16:07:49,137 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 16:07:49,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 16:07:49,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 16:07:49,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 16:07:49,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fd95fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49, skipping insertion in model container [2023-08-24 16:07:49,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,176 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 16:07:49,342 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-24 16:07:49,360 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:07:49,377 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 16:07:49,420 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-24 16:07:49,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 16:07:49,439 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 16:07:49,439 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 16:07:49,445 INFO L206 MainTranslator]: Completed translation [2023-08-24 16:07:49,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49 WrapperNode [2023-08-24 16:07:49,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 16:07:49,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 16:07:49,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 16:07:49,446 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 16:07:49,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,512 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 412 [2023-08-24 16:07:49,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 16:07:49,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 16:07:49,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 16:07:49,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 16:07:49,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,578 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 16:07:49,579 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 16:07:49,579 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 16:07:49,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 16:07:49,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (1/1) ... [2023-08-24 16:07:49,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 16:07:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:07:49,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 16:07:49,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 16:07:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 16:07:49,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 16:07:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 16:07:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 16:07:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 16:07:49,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 16:07:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 16:07:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 16:07:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 16:07:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 16:07:49,650 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 16:07:49,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 16:07:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 16:07:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 16:07:49,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 16:07:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 16:07:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 16:07:49,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 16:07:49,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 16:07:49,654 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 16:07:49,794 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 16:07:49,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 16:07:50,284 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 16:07:50,401 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 16:07:50,401 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-24 16:07:50,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:07:50 BoogieIcfgContainer [2023-08-24 16:07:50,406 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 16:07:50,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 16:07:50,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 16:07:50,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 16:07:50,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 04:07:49" (1/3) ... [2023-08-24 16:07:50,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c15c6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:07:50, skipping insertion in model container [2023-08-24 16:07:50,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 04:07:49" (2/3) ... [2023-08-24 16:07:50,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c15c6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 04:07:50, skipping insertion in model container [2023-08-24 16:07:50,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 04:07:50" (3/3) ... [2023-08-24 16:07:50,414 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-08-24 16:07:50,426 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 16:07:50,426 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 16:07:50,426 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 16:07:50,519 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 16:07:50,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 393 transitions, 810 flow [2023-08-24 16:07:50,690 INFO L124 PetriNetUnfolderBase]: 37/390 cut-off events. [2023-08-24 16:07:50,690 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:07:50,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 390 events. 37/390 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 413 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 311. Up to 2 conditions per place. [2023-08-24 16:07:50,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 393 transitions, 810 flow [2023-08-24 16:07:50,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 380 transitions, 778 flow [2023-08-24 16:07:50,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 16:07:50,726 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 380 transitions, 778 flow [2023-08-24 16:07:50,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 380 transitions, 778 flow [2023-08-24 16:07:50,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 380 transitions, 778 flow [2023-08-24 16:07:50,805 INFO L124 PetriNetUnfolderBase]: 37/380 cut-off events. [2023-08-24 16:07:50,805 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:07:50,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 380 events. 37/380 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 390 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 311. Up to 2 conditions per place. [2023-08-24 16:07:50,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 4578 [2023-08-24 16:08:02,999 INFO L134 LiptonReduction]: Checked pairs total: 5982 [2023-08-24 16:08:02,999 INFO L136 LiptonReduction]: Total number of compositions: 422 [2023-08-24 16:08:03,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 16:08:03,017 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;@1f722859, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 16:08:03,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 16:08:03,024 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 16:08:03,024 INFO L124 PetriNetUnfolderBase]: 10/36 cut-off events. [2023-08-24 16:08:03,024 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 16:08:03,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:03,025 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] [2023-08-24 16:08:03,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:03,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1115453719, now seen corresponding path program 1 times [2023-08-24 16:08:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308225546] [2023-08-24 16:08:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:03,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:08:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308225546] [2023-08-24 16:08:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308225546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:03,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 16:08:03,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063588662] [2023-08-24 16:08:03,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:03,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 16:08:03,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 16:08:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 16:08:03,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 815 [2023-08-24 16:08:03,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:03,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:03,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 815 [2023-08-24 16:08:03,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:03,729 INFO L124 PetriNetUnfolderBase]: 251/392 cut-off events. [2023-08-24 16:08:03,730 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 16:08:03,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 392 events. 251/392 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1433 event pairs, 67 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 656. Up to 227 conditions per place. [2023-08-24 16:08:03,735 INFO L140 encePairwiseOnDemand]: 811/815 looper letters, 43 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-24 16:08:03,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 208 flow [2023-08-24 16:08:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 16:08:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 16:08:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1104 transitions. [2023-08-24 16:08:03,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45153374233128835 [2023-08-24 16:08:03,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1104 transitions. [2023-08-24 16:08:03,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1104 transitions. [2023-08-24 16:08:03,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:03,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1104 transitions. [2023-08-24 16:08:03,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:03,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 815.0) internal successors, (3260), 4 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:03,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 815.0) internal successors, (3260), 4 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:03,780 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 92 flow. Second operand 3 states and 1104 transitions. [2023-08-24 16:08:03,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 208 flow [2023-08-24 16:08:03,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 16:08:03,788 INFO L231 Difference]: Finished difference. Result has 33 places, 36 transitions, 88 flow [2023-08-24 16:08:03,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=36} [2023-08-24 16:08:03,794 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2023-08-24 16:08:03,794 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 36 transitions, 88 flow [2023-08-24 16:08:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:03,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:03,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:03,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 16:08:03,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:03,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:03,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1792028460, now seen corresponding path program 1 times [2023-08-24 16:08:03,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:03,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176238384] [2023-08-24 16:08:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 16:08:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176238384] [2023-08-24 16:08:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176238384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:04,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 16:08:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347276154] [2023-08-24 16:08:04,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:04,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:04,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:04,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:04,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 815 [2023-08-24 16:08:04,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:04,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 815 [2023-08-24 16:08:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:04,194 INFO L124 PetriNetUnfolderBase]: 290/479 cut-off events. [2023-08-24 16:08:04,195 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-24 16:08:04,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1105 conditions, 479 events. 290/479 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1849 event pairs, 212 based on Foata normal form. 20/376 useless extension candidates. Maximal degree in co-relation 518. Up to 385 conditions per place. [2023-08-24 16:08:04,197 INFO L140 encePairwiseOnDemand]: 803/815 looper letters, 33 selfloop transitions, 2 changer transitions 30/67 dead transitions. [2023-08-24 16:08:04,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 67 transitions, 285 flow [2023-08-24 16:08:04,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:04,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1586 transitions. [2023-08-24 16:08:04,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920245398773007 [2023-08-24 16:08:04,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1586 transitions. [2023-08-24 16:08:04,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1586 transitions. [2023-08-24 16:08:04,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:04,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1586 transitions. [2023-08-24 16:08:04,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.2) internal successors, (1586), 5 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,215 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,215 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 88 flow. Second operand 5 states and 1586 transitions. [2023-08-24 16:08:04,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 67 transitions, 285 flow [2023-08-24 16:08:04,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:08:04,217 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 116 flow [2023-08-24 16:08:04,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-24 16:08:04,218 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 2 predicate places. [2023-08-24 16:08:04,218 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 116 flow [2023-08-24 16:08:04,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:04,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:04,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 16:08:04,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:04,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1543141543, now seen corresponding path program 1 times [2023-08-24 16:08:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:04,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500813614] [2023-08-24 16:08:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:04,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:08:04,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:04,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500813614] [2023-08-24 16:08:04,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500813614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:04,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:04,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:08:04,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961067034] [2023-08-24 16:08:04,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:04,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:04,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:04,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:04,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:04,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 815 [2023-08-24 16:08:04,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:04,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 815 [2023-08-24 16:08:04,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:04,499 INFO L124 PetriNetUnfolderBase]: 303/498 cut-off events. [2023-08-24 16:08:04,499 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-24 16:08:04,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 498 events. 303/498 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1849 event pairs, 224 based on Foata normal form. 22/441 useless extension candidates. Maximal degree in co-relation 1186. Up to 386 conditions per place. [2023-08-24 16:08:04,502 INFO L140 encePairwiseOnDemand]: 810/815 looper letters, 36 selfloop transitions, 2 changer transitions 16/56 dead transitions. [2023-08-24 16:08:04,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 275 flow [2023-08-24 16:08:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 16:08:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 16:08:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1422 transitions. [2023-08-24 16:08:04,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361963190184049 [2023-08-24 16:08:04,506 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1422 transitions. [2023-08-24 16:08:04,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1422 transitions. [2023-08-24 16:08:04,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:04,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1422 transitions. [2023-08-24 16:08:04,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 355.5) internal successors, (1422), 4 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 815.0) internal successors, (4075), 5 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 815.0) internal successors, (4075), 5 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,548 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 116 flow. Second operand 4 states and 1422 transitions. [2023-08-24 16:08:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 275 flow [2023-08-24 16:08:04,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 251 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-24 16:08:04,550 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 114 flow [2023-08-24 16:08:04,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-24 16:08:04,550 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-24 16:08:04,551 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 114 flow [2023-08-24 16:08:04,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 347.75) internal successors, (1391), 4 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:04,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:04,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 16:08:04,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:04,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2023684614, now seen corresponding path program 1 times [2023-08-24 16:08:04,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:04,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732770996] [2023-08-24 16:08:04,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:04,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 16:08:04,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:04,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732770996] [2023-08-24 16:08:04,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732770996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:04,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:04,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:08:04,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224905685] [2023-08-24 16:08:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:04,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:04,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:04,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:04,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:04,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 815 [2023-08-24 16:08:04,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:04,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 815 [2023-08-24 16:08:04,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:04,861 INFO L124 PetriNetUnfolderBase]: 307/507 cut-off events. [2023-08-24 16:08:04,861 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2023-08-24 16:08:04,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 507 events. 307/507 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1966 event pairs, 224 based on Foata normal form. 36/504 useless extension candidates. Maximal degree in co-relation 1269. Up to 389 conditions per place. [2023-08-24 16:08:04,864 INFO L140 encePairwiseOnDemand]: 810/815 looper letters, 35 selfloop transitions, 2 changer transitions 23/62 dead transitions. [2023-08-24 16:08:04,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 300 flow [2023-08-24 16:08:04,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1578 transitions. [2023-08-24 16:08:04,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38723926380368096 [2023-08-24 16:08:04,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1578 transitions. [2023-08-24 16:08:04,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1578 transitions. [2023-08-24 16:08:04,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:04,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1578 transitions. [2023-08-24 16:08:04,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,881 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,881 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 114 flow. Second operand 5 states and 1578 transitions. [2023-08-24 16:08:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 300 flow [2023-08-24 16:08:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:08:04,884 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 134 flow [2023-08-24 16:08:04,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-24 16:08:04,884 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 8 predicate places. [2023-08-24 16:08:04,885 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 134 flow [2023-08-24 16:08:04,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.25) internal successors, (1241), 4 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:04,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:04,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:04,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 16:08:04,886 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:04,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1369047659, now seen corresponding path program 1 times [2023-08-24 16:08:04,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:04,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47087230] [2023-08-24 16:08:04,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:04,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:04,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:05,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:05,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47087230] [2023-08-24 16:08:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47087230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:05,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 16:08:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458198322] [2023-08-24 16:08:05,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 16:08:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 16:08:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 16:08:05,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 815 [2023-08-24 16:08:05,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:05,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 815 [2023-08-24 16:08:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:05,168 INFO L124 PetriNetUnfolderBase]: 608/890 cut-off events. [2023-08-24 16:08:05,168 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-24 16:08:05,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 890 events. 608/890 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3046 event pairs, 153 based on Foata normal form. 34/855 useless extension candidates. Maximal degree in co-relation 2413. Up to 569 conditions per place. [2023-08-24 16:08:05,174 INFO L140 encePairwiseOnDemand]: 812/815 looper letters, 52 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-24 16:08:05,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 292 flow [2023-08-24 16:08:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 16:08:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 16:08:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1103 transitions. [2023-08-24 16:08:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112474437627814 [2023-08-24 16:08:05,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1103 transitions. [2023-08-24 16:08:05,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1103 transitions. [2023-08-24 16:08:05,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:05,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1103 transitions. [2023-08-24 16:08:05,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 815.0) internal successors, (3260), 4 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 815.0) internal successors, (3260), 4 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,186 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 134 flow. Second operand 3 states and 1103 transitions. [2023-08-24 16:08:05,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 292 flow [2023-08-24 16:08:05,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 276 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-24 16:08:05,188 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 134 flow [2023-08-24 16:08:05,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-24 16:08:05,189 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2023-08-24 16:08:05,189 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 134 flow [2023-08-24 16:08:05,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 360.0) internal successors, (1080), 3 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:05,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:05,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 16:08:05,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:05,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:05,191 INFO L85 PathProgramCache]: Analyzing trace with hash 645413186, now seen corresponding path program 1 times [2023-08-24 16:08:05,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:05,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24559981] [2023-08-24 16:08:05,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:05,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24559981] [2023-08-24 16:08:05,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24559981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:05,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:05,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:08:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57649174] [2023-08-24 16:08:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:05,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 815 [2023-08-24 16:08:05,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:05,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 815 [2023-08-24 16:08:05,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:05,550 INFO L124 PetriNetUnfolderBase]: 423/674 cut-off events. [2023-08-24 16:08:05,550 INFO L125 PetriNetUnfolderBase]: For 476/476 co-relation queries the response was YES. [2023-08-24 16:08:05,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 674 events. 423/674 cut-off events. For 476/476 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2644 event pairs, 329 based on Foata normal form. 25/640 useless extension candidates. Maximal degree in co-relation 1874. Up to 622 conditions per place. [2023-08-24 16:08:05,555 INFO L140 encePairwiseOnDemand]: 808/815 looper letters, 37 selfloop transitions, 2 changer transitions 19/60 dead transitions. [2023-08-24 16:08:05,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 319 flow [2023-08-24 16:08:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1578 transitions. [2023-08-24 16:08:05,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38723926380368096 [2023-08-24 16:08:05,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1578 transitions. [2023-08-24 16:08:05,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1578 transitions. [2023-08-24 16:08:05,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:05,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1578 transitions. [2023-08-24 16:08:05,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,569 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,569 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 134 flow. Second operand 5 states and 1578 transitions. [2023-08-24 16:08:05,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 319 flow [2023-08-24 16:08:05,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 16:08:05,571 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 152 flow [2023-08-24 16:08:05,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-24 16:08:05,572 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 12 predicate places. [2023-08-24 16:08:05,572 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 152 flow [2023-08-24 16:08:05,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 312.25) internal successors, (1249), 4 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:05,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:05,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 16:08:05,573 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:05,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1627478815, now seen corresponding path program 1 times [2023-08-24 16:08:05,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:05,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11081753] [2023-08-24 16:08:05,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:05,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 16:08:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:05,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11081753] [2023-08-24 16:08:05,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11081753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:05,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:05,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:08:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772196340] [2023-08-24 16:08:05,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:05,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 815 [2023-08-24 16:08:05,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:05,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:05,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 815 [2023-08-24 16:08:05,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:06,105 INFO L124 PetriNetUnfolderBase]: 1202/1737 cut-off events. [2023-08-24 16:08:06,105 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2023-08-24 16:08:06,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 1737 events. 1202/1737 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6840 event pairs, 196 based on Foata normal form. 62/1667 useless extension candidates. Maximal degree in co-relation 4927. Up to 820 conditions per place. [2023-08-24 16:08:06,118 INFO L140 encePairwiseOnDemand]: 808/815 looper letters, 72 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2023-08-24 16:08:06,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 479 flow [2023-08-24 16:08:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1814 transitions. [2023-08-24 16:08:06,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44515337423312884 [2023-08-24 16:08:06,123 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1814 transitions. [2023-08-24 16:08:06,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1814 transitions. [2023-08-24 16:08:06,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:06,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1814 transitions. [2023-08-24 16:08:06,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 362.8) internal successors, (1814), 5 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:06,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:06,134 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:06,134 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 152 flow. Second operand 5 states and 1814 transitions. [2023-08-24 16:08:06,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 479 flow [2023-08-24 16:08:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 471 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 16:08:06,137 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 264 flow [2023-08-24 16:08:06,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2023-08-24 16:08:06,138 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 16 predicate places. [2023-08-24 16:08:06,138 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 264 flow [2023-08-24 16:08:06,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 355.75) internal successors, (1423), 4 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:06,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:06,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:06,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 16:08:06,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:06,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash -880880571, now seen corresponding path program 2 times [2023-08-24 16:08:06,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:06,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060124135] [2023-08-24 16:08:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 16:08:06,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:06,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060124135] [2023-08-24 16:08:06,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060124135] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:06,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098170814] [2023-08-24 16:08:06,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 16:08:06,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:06,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:08:06,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:08:06,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 16:08:06,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 16:08:06,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:08:06,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 16:08:06,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:08:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 16:08:07,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 16:08:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098170814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:07,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 16:08:07,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-08-24 16:08:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850931736] [2023-08-24 16:08:07,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:07,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 16:08:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 16:08:07,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-24 16:08:07,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 815 [2023-08-24 16:08:07,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 357.2) internal successors, (1786), 5 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:07,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:07,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 815 [2023-08-24 16:08:07,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:07,555 INFO L124 PetriNetUnfolderBase]: 2012/2903 cut-off events. [2023-08-24 16:08:07,555 INFO L125 PetriNetUnfolderBase]: For 5846/5846 co-relation queries the response was YES. [2023-08-24 16:08:07,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10811 conditions, 2903 events. 2012/2903 cut-off events. For 5846/5846 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12794 event pairs, 283 based on Foata normal form. 38/2715 useless extension candidates. Maximal degree in co-relation 10781. Up to 1039 conditions per place. [2023-08-24 16:08:07,575 INFO L140 encePairwiseOnDemand]: 809/815 looper letters, 94 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2023-08-24 16:08:07,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 113 transitions, 811 flow [2023-08-24 16:08:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 16:08:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 16:08:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2188 transitions. [2023-08-24 16:08:07,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474437627811861 [2023-08-24 16:08:07,580 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2188 transitions. [2023-08-24 16:08:07,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2188 transitions. [2023-08-24 16:08:07,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:07,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2188 transitions. [2023-08-24 16:08:07,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 364.6666666666667) internal successors, (2188), 6 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:07,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 815.0) internal successors, (5705), 7 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:07,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 815.0) internal successors, (5705), 7 states have internal predecessors, (5705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:07,604 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 264 flow. Second operand 6 states and 2188 transitions. [2023-08-24 16:08:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 113 transitions, 811 flow [2023-08-24 16:08:07,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 113 transitions, 811 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 16:08:07,611 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 491 flow [2023-08-24 16:08:07,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2023-08-24 16:08:07,614 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 25 predicate places. [2023-08-24 16:08:07,614 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 491 flow [2023-08-24 16:08:07,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 357.2) internal successors, (1786), 5 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:07,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:07,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:07,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 16:08:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:07,821 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:07,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1569831523, now seen corresponding path program 1 times [2023-08-24 16:08:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542653794] [2023-08-24 16:08:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:07,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 16:08:08,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:08,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542653794] [2023-08-24 16:08:08,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542653794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 16:08:08,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 16:08:08,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 16:08:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605682172] [2023-08-24 16:08:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 16:08:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:08,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 16:08:08,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 16:08:08,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 815 [2023-08-24 16:08:08,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:08,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:08,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 815 [2023-08-24 16:08:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:08,801 INFO L124 PetriNetUnfolderBase]: 2368/3630 cut-off events. [2023-08-24 16:08:08,802 INFO L125 PetriNetUnfolderBase]: For 20633/21175 co-relation queries the response was YES. [2023-08-24 16:08:08,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16128 conditions, 3630 events. 2368/3630 cut-off events. For 20633/21175 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 19247 event pairs, 1354 based on Foata normal form. 553/3897 useless extension candidates. Maximal degree in co-relation 16092. Up to 2444 conditions per place. [2023-08-24 16:08:08,834 INFO L140 encePairwiseOnDemand]: 808/815 looper letters, 55 selfloop transitions, 2 changer transitions 46/114 dead transitions. [2023-08-24 16:08:08,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 1038 flow [2023-08-24 16:08:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:08,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:08,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1572 transitions. [2023-08-24 16:08:08,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857668711656442 [2023-08-24 16:08:08,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1572 transitions. [2023-08-24 16:08:08,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1572 transitions. [2023-08-24 16:08:08,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:08,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1572 transitions. [2023-08-24 16:08:08,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.4) internal successors, (1572), 5 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:08,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:08,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:08,848 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 491 flow. Second operand 5 states and 1572 transitions. [2023-08-24 16:08:08,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 1038 flow [2023-08-24 16:08:08,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 114 transitions, 1009 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-24 16:08:08,873 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 496 flow [2023-08-24 16:08:08,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-08-24 16:08:08,874 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2023-08-24 16:08:08,874 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 496 flow [2023-08-24 16:08:08,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.75) internal successors, (1239), 4 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:08,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:08,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:08,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 16:08:08,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:08,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:08,875 INFO L85 PathProgramCache]: Analyzing trace with hash 583597757, now seen corresponding path program 1 times [2023-08-24 16:08:08,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:08,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282572152] [2023-08-24 16:08:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:09,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:09,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282572152] [2023-08-24 16:08:09,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282572152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:09,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619301398] [2023-08-24 16:08:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:09,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:09,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:08:09,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:08:09,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 16:08:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:09,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 16:08:09,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:08:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:09,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:08:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:09,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619301398] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:09,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 16:08:09,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2023-08-24 16:08:09,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862515896] [2023-08-24 16:08:09,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 16:08:09,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 16:08:09,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 16:08:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-24 16:08:09,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 815 [2023-08-24 16:08:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:09,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:09,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 815 [2023-08-24 16:08:09,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:09,756 INFO L124 PetriNetUnfolderBase]: 1763/2610 cut-off events. [2023-08-24 16:08:09,757 INFO L125 PetriNetUnfolderBase]: For 13374/13790 co-relation queries the response was YES. [2023-08-24 16:08:09,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11496 conditions, 2610 events. 1763/2610 cut-off events. For 13374/13790 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 12332 event pairs, 1011 based on Foata normal form. 276/2633 useless extension candidates. Maximal degree in co-relation 11456. Up to 2440 conditions per place. [2023-08-24 16:08:09,789 INFO L140 encePairwiseOnDemand]: 810/815 looper letters, 54 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-24 16:08:09,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 614 flow [2023-08-24 16:08:09,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 16:08:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 16:08:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1491 transitions. [2023-08-24 16:08:09,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658895705521472 [2023-08-24 16:08:09,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1491 transitions. [2023-08-24 16:08:09,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1491 transitions. [2023-08-24 16:08:09,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:09,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1491 transitions. [2023-08-24 16:08:09,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.2) internal successors, (1491), 5 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:09,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:09,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 815.0) internal successors, (4890), 6 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:09,803 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 496 flow. Second operand 5 states and 1491 transitions. [2023-08-24 16:08:09,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 614 flow [2023-08-24 16:08:09,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 594 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 16:08:09,826 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 492 flow [2023-08-24 16:08:09,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-08-24 16:08:09,827 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 31 predicate places. [2023-08-24 16:08:09,827 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 492 flow [2023-08-24 16:08:09,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 297.4) internal successors, (1487), 5 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:09,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:09,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:09,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 16:08:10,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-24 16:08:10,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:10,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:10,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2139617891, now seen corresponding path program 1 times [2023-08-24 16:08:10,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:10,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688664521] [2023-08-24 16:08:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:10,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:10,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688664521] [2023-08-24 16:08:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688664521] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858919773] [2023-08-24 16:08:10,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:10,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:10,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:08:10,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:08:10,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 16:08:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:10,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 16:08:10,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:08:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:10,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:08:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 16:08:10,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858919773] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:08:10,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:08:10,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2023-08-24 16:08:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824386151] [2023-08-24 16:08:10,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:08:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 16:08:10,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 16:08:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-24 16:08:10,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 815 [2023-08-24 16:08:10,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 492 flow. Second operand has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:10,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:10,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 815 [2023-08-24 16:08:10,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:11,297 INFO L124 PetriNetUnfolderBase]: 1941/2822 cut-off events. [2023-08-24 16:08:11,297 INFO L125 PetriNetUnfolderBase]: For 9388/9388 co-relation queries the response was YES. [2023-08-24 16:08:11,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12150 conditions, 2822 events. 1941/2822 cut-off events. For 9388/9388 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12169 event pairs, 70 based on Foata normal form. 116/2716 useless extension candidates. Maximal degree in co-relation 12110. Up to 1326 conditions per place. [2023-08-24 16:08:11,326 INFO L140 encePairwiseOnDemand]: 808/815 looper letters, 101 selfloop transitions, 31 changer transitions 0/132 dead transitions. [2023-08-24 16:08:11,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 132 transitions, 1103 flow [2023-08-24 16:08:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 16:08:11,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 16:08:11,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2524 transitions. [2023-08-24 16:08:11,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44241893076248906 [2023-08-24 16:08:11,333 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2524 transitions. [2023-08-24 16:08:11,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2524 transitions. [2023-08-24 16:08:11,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:11,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2524 transitions. [2023-08-24 16:08:11,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 360.57142857142856) internal successors, (2524), 7 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:11,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 815.0) internal successors, (6520), 8 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:11,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 815.0) internal successors, (6520), 8 states have internal predecessors, (6520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:11,347 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 492 flow. Second operand 7 states and 2524 transitions. [2023-08-24 16:08:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 132 transitions, 1103 flow [2023-08-24 16:08:11,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 132 transitions, 1095 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-24 16:08:11,362 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 762 flow [2023-08-24 16:08:11,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=762, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2023-08-24 16:08:11,362 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 36 predicate places. [2023-08-24 16:08:11,362 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 762 flow [2023-08-24 16:08:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:11,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:11,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:11,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 16:08:11,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:11,572 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:11,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:11,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2130101429, now seen corresponding path program 2 times [2023-08-24 16:08:11,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:11,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548175576] [2023-08-24 16:08:11,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:11,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:12,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548175576] [2023-08-24 16:08:12,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548175576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:12,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356540245] [2023-08-24 16:08:12,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 16:08:12,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:12,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:08:12,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:08:12,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 16:08:13,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 16:08:13,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:08:13,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 16:08:13,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:08:13,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 16:08:13,360 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 16:08:13,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:08:13,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:08:13,452 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:13,519 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:13,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:08:13,526 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:08:13,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:08:13,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-24 16:08:13,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:13,931 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-24 16:08:13,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 61 [2023-08-24 16:08:13,939 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-08-24 16:08:13,973 INFO L322 Elim1Store]: treesize reduction 57, result has 38.7 percent of original size [2023-08-24 16:08:13,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 64 [2023-08-24 16:08:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:13,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:08:14,163 INFO L322 Elim1Store]: treesize reduction 4, result has 97.1 percent of original size [2023-08-24 16:08:14,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 182 [2023-08-24 16:08:15,436 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:15,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 56 [2023-08-24 16:08:15,459 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:15,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 506 treesize of output 490 [2023-08-24 16:08:15,482 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:15,482 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 210 [2023-08-24 16:08:15,499 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:15,499 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 162 [2023-08-24 16:08:15,516 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:15,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 79 [2023-08-24 16:08:16,004 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 16:08:16,005 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 1 [2023-08-24 16:08:16,012 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 16:08:16,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 1 [2023-08-24 16:08:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356540245] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 16:08:16,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 16:08:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 27 [2023-08-24 16:08:16,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409766509] [2023-08-24 16:08:16,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 16:08:16,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 16:08:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 16:08:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 16:08:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=666, Unknown=7, NotChecked=0, Total=812 [2023-08-24 16:08:16,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 815 [2023-08-24 16:08:16,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 762 flow. Second operand has 29 states, 29 states have (on average 238.06896551724137) internal successors, (6904), 29 states have internal predecessors, (6904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 16:08:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 815 [2023-08-24 16:08:16,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 16:08:21,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-24 16:08:23,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:08:25,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:08:28,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:08:30,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:08:32,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 16:08:34,873 INFO L124 PetriNetUnfolderBase]: 9102/13643 cut-off events. [2023-08-24 16:08:34,873 INFO L125 PetriNetUnfolderBase]: For 91992/94513 co-relation queries the response was YES. [2023-08-24 16:08:34,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64577 conditions, 13643 events. 9102/13643 cut-off events. For 91992/94513 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 84945 event pairs, 418 based on Foata normal form. 1617/13751 useless extension candidates. Maximal degree in co-relation 64535. Up to 3523 conditions per place. [2023-08-24 16:08:34,984 INFO L140 encePairwiseOnDemand]: 805/815 looper letters, 450 selfloop transitions, 165 changer transitions 12/643 dead transitions. [2023-08-24 16:08:34,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 643 transitions, 7621 flow [2023-08-24 16:08:34,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-24 16:08:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-24 16:08:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 8041 transitions. [2023-08-24 16:08:35,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29897750511247445 [2023-08-24 16:08:35,006 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 8041 transitions. [2023-08-24 16:08:35,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 8041 transitions. [2023-08-24 16:08:35,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 16:08:35,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 8041 transitions. [2023-08-24 16:08:35,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 243.66666666666666) internal successors, (8041), 33 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:35,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 815.0) internal successors, (27710), 34 states have internal predecessors, (27710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:35,060 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 815.0) internal successors, (27710), 34 states have internal predecessors, (27710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:35,061 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 762 flow. Second operand 33 states and 8041 transitions. [2023-08-24 16:08:35,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 643 transitions, 7621 flow [2023-08-24 16:08:35,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 643 transitions, 7311 flow, removed 155 selfloop flow, removed 0 redundant places. [2023-08-24 16:08:35,174 INFO L231 Difference]: Finished difference. Result has 109 places, 258 transitions, 3018 flow [2023-08-24 16:08:35,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=815, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3018, PETRI_PLACES=109, PETRI_TRANSITIONS=258} [2023-08-24 16:08:35,174 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 72 predicate places. [2023-08-24 16:08:35,175 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 258 transitions, 3018 flow [2023-08-24 16:08:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 238.06896551724137) internal successors, (6904), 29 states have internal predecessors, (6904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 16:08:35,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 16:08:35,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:08:35,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 16:08:35,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:35,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 16:08:35,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 16:08:35,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2052466209, now seen corresponding path program 3 times [2023-08-24 16:08:35,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 16:08:35,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384590151] [2023-08-24 16:08:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 16:08:35,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 16:08:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 16:08:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 16:08:36,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 16:08:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384590151] [2023-08-24 16:08:36,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384590151] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 16:08:36,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216459194] [2023-08-24 16:08:36,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 16:08:36,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 16:08:36,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 16:08:36,712 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 16:08:36,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 16:08:37,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 16:08:37,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 16:08:37,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 16:08:37,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 16:08:37,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:08:37,991 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 16:08:38,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,185 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:08:38,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 16:08:38,356 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 16:08:38,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 31 [2023-08-24 16:08:38,362 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 16:08:38,582 INFO L322 Elim1Store]: treesize reduction 69, result has 41.0 percent of original size [2023-08-24 16:08:38,582 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 83 [2023-08-24 16:08:38,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2023-08-24 16:08:38,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 41 [2023-08-24 16:08:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 16:08:38,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 16:08:39,315 INFO L322 Elim1Store]: treesize reduction 22, result has 97.7 percent of original size [2023-08-24 16:08:39,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 1417 treesize of output 1726 [2023-08-24 16:08:39,554 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 16:08:39,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 1361 treesize of output 1305 Received shutdown request... [2023-08-24 16:21:43,199 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 16:21:43,201 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 16:21:43,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 16:21:43,238 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:21:43,239 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 16:21:43,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 16:21:43,402 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 17ms.. [2023-08-24 16:21:43,403 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 16:21:43,403 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 16:21:43,403 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 16:21:43,404 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 16:21:43,406 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 16:21:43,406 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 16:21:43,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 04:21:43 BasicIcfg [2023-08-24 16:21:43,408 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 16:21:43,409 INFO L158 Benchmark]: Toolchain (without parser) took 834274.83ms. Allocated memory was 385.9MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 341.9MB in the beginning and 837.5MB in the end (delta: -495.6MB). Peak memory consumption was 971.6MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,409 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 16:21:43,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.01ms. Allocated memory is still 385.9MB. Free memory was 341.9MB in the beginning and 329.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,409 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.87ms. Allocated memory is still 385.9MB. Free memory was 329.3MB in the beginning and 326.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,409 INFO L158 Benchmark]: Boogie Preprocessor took 64.61ms. Allocated memory is still 385.9MB. Free memory was 326.2MB in the beginning and 323.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,410 INFO L158 Benchmark]: RCFGBuilder took 827.10ms. Allocated memory is still 385.9MB. Free memory was 323.1MB in the beginning and 270.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,410 INFO L158 Benchmark]: TraceAbstraction took 833000.37ms. Allocated memory was 385.9MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 269.6MB in the beginning and 837.5MB in the end (delta: -567.9MB). Peak memory consumption was 900.3MB. Max. memory is 16.0GB. [2023-08-24 16:21:43,411 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 385.9MB. Free memory was 363.3MB in the beginning and 363.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 306.01ms. Allocated memory is still 385.9MB. Free memory was 341.9MB in the beginning and 329.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.87ms. Allocated memory is still 385.9MB. Free memory was 329.3MB in the beginning and 326.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 64.61ms. Allocated memory is still 385.9MB. Free memory was 326.2MB in the beginning and 323.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 827.10ms. Allocated memory is still 385.9MB. Free memory was 323.1MB in the beginning and 270.6MB in the end (delta: 52.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.0GB. * TraceAbstraction took 833000.37ms. Allocated memory was 385.9MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 269.6MB in the beginning and 837.5MB in the end (delta: -567.9MB). Peak memory consumption was 900.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.3s, 353 PlacesBefore, 37 PlacesAfterwards, 380 TransitionsBefore, 37 TransitionsAfterwards, 4578 CoEnabledTransitionPairs, 8 FixpointIterations, 241 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 59 TrivialYvCompositions, 29 ConcurrentYvCompositions, 27 ChoiceCompositions, 422 TotalNumberOfCompositions, 5982 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4930, independent: 4845, independent conditional: 0, independent unconditional: 4845, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2688, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4930, independent: 2177, independent conditional: 0, independent unconditional: 2177, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 2688, unknown conditional: 0, unknown unconditional: 2688] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 17ms.. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 17ms.. - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 17ms.. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 36 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 14 for 17ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 429 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 832.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.5s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 778 SdHoareTripleChecker+Valid, 15.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 778 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2718 IncrementalHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 1 mSDtfsCounter, 2718 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3018occurred in iteration=12, InterpolantAutomatonStates: 86, 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: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 571 ConstructedInterpolants, 31 QuantifiedInterpolants, 4798 SizeOfPredicates, 41 NumberOfNonLiveVariables, 2117 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 97/118 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 could not prove your program: Timeout Completed graceful shutdown