/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-file-item-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:37:18,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:37:18,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:37:18,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:37:18,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:37:18,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:37:18,461 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:37:18,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:37:18,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:37:18,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:37:18,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:37:18,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:37:18,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:37:18,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:37:18,496 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:37:18,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:37:18,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:37:18,496 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:37:18,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:37:18,497 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:37:18,497 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:37:18,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:37:18,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:37:18,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:37:18,502 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:37:18,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:37:18,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:37:18,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:37:18,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:37:18,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:37:18,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:37:18,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:37:18,505 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:37:18,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:37:18,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:37:18,506 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:37:18,506 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:37:18,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:37:18,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:37:18,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:37:18,788 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:37:18,788 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:37:18,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-file-item-subst.wvr_bound2.c [2023-08-03 19:37:19,885 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:37:20,079 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:37:20,080 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-file-item-subst.wvr_bound2.c [2023-08-03 19:37:20,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fff1b20/cac51ddfdeff4b9a8dc7eb8cb5bf309c/FLAG40a0a2661 [2023-08-03 19:37:20,103 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2fff1b20/cac51ddfdeff4b9a8dc7eb8cb5bf309c [2023-08-03 19:37:20,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:37:20,107 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:37:20,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:37:20,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:37:20,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:37:20,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ab403a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20, skipping insertion in model container [2023-08-03 19:37:20,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,147 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:37:20,311 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-file-item-subst.wvr_bound2.c[3258,3271] [2023-08-03 19:37:20,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:37:20,323 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:37:20,354 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-file-item-subst.wvr_bound2.c[3258,3271] [2023-08-03 19:37:20,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:37:20,369 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:37:20,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20 WrapperNode [2023-08-03 19:37:20,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:37:20,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:37:20,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:37:20,370 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:37:20,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,415 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 254 [2023-08-03 19:37:20,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:37:20,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:37:20,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:37:20,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:37:20,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,431 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,431 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:37:20,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:37:20,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:37:20,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:37:20,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (1/1) ... [2023-08-03 19:37:20,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:37:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:20,505 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) [2023-08-03 19:37:20,507 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 [2023-08-03 19:37:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:37:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:37:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:37:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:37:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:37:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:37:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:37:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:37:20,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:37:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:37:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:37:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:37:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:37:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:37:20,534 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:37:20,622 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:37:20,624 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:37:20,908 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:37:20,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:37:20,922 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:37:20,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:37:20 BoogieIcfgContainer [2023-08-03 19:37:20,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:37:20,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:37:20,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:37:20,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:37:20,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:37:20" (1/3) ... [2023-08-03 19:37:20,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc62396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:37:20, skipping insertion in model container [2023-08-03 19:37:20,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:37:20" (2/3) ... [2023-08-03 19:37:20,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc62396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:37:20, skipping insertion in model container [2023-08-03 19:37:20,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:37:20" (3/3) ... [2023-08-03 19:37:20,932 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-file-item-subst.wvr_bound2.c [2023-08-03 19:37:20,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:37:20,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:37:20,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:37:20,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:37:21,078 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:37:21,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,385 INFO L124 PetriNetUnfolderBase]: 132/934 cut-off events. [2023-08-03 19:37:21,385 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:37:21,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 934 events. 132/934 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5746 event pairs, 0 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 499. Up to 16 conditions per place. [2023-08-03 19:37:21,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:37:21,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 288 transitions, 618 flow [2023-08-03 19:37:21,592 INFO L124 PetriNetUnfolderBase]: 132/934 cut-off events. [2023-08-03 19:37:21,592 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-08-03 19:37:21,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 934 events. 132/934 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5746 event pairs, 0 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 499. Up to 16 conditions per place. [2023-08-03 19:37:21,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 33528 [2023-08-03 19:37:29,094 INFO L134 LiptonReduction]: Checked pairs total: 37799 [2023-08-03 19:37:29,094 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-08-03 19:37:29,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:37:29,113 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=true, 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;@228b7a83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:37:29,114 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:37:29,119 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:37:29,120 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:37:29,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:37:29,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:29,121 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:37:29,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:29,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:29,126 INFO L85 PathProgramCache]: Analyzing trace with hash 772770750, now seen corresponding path program 1 times [2023-08-03 19:37:29,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:29,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369823409] [2023-08-03 19:37:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:29,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:37:29,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:37:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:37:29,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:37:29,329 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:37:29,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:37:29,331 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:37:29,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:37:29,332 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:37:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:37:29,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:37:29,336 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:37:29,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:37:29,390 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:37:29,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:30,808 INFO L124 PetriNetUnfolderBase]: 1054/5405 cut-off events. [2023-08-03 19:37:30,809 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:37:30,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 5405 events. 1054/5405 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 48088 event pairs, 22 based on Foata normal form. 0/4595 useless extension candidates. Maximal degree in co-relation 3224. Up to 192 conditions per place. [2023-08-03 19:37:30,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:30,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:30,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:37:30,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:30,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:30,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 383 places, 432 transitions, 954 flow [2023-08-03 19:37:32,168 INFO L124 PetriNetUnfolderBase]: 1054/5405 cut-off events. [2023-08-03 19:37:32,168 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:37:32,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 5405 events. 1054/5405 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 48088 event pairs, 22 based on Foata normal form. 0/4595 useless extension candidates. Maximal degree in co-relation 3224. Up to 192 conditions per place. [2023-08-03 19:37:32,466 INFO L119 LiptonReduction]: Number of co-enabled transitions 107448 [2023-08-03 19:37:42,861 INFO L134 LiptonReduction]: Checked pairs total: 131244 [2023-08-03 19:37:42,861 INFO L136 LiptonReduction]: Total number of compositions: 508 [2023-08-03 19:37:42,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:37:42,864 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=true, 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;@228b7a83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:37:42,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:37:42,868 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:37:42,868 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-03 19:37:42,868 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 19:37:42,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:42,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:42,869 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)] === [2023-08-03 19:37:42,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1202829256, now seen corresponding path program 1 times [2023-08-03 19:37:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:42,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178187802] [2023-08-03 19:37:42,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:37:42,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:42,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178187802] [2023-08-03 19:37:42,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178187802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:42,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:37:42,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:37:42,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492206479] [2023-08-03 19:37:42,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:42,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:42,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:37:43,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:37:43,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 385.3333333333333) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:43,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:43,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:37:43,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:48,582 INFO L124 PetriNetUnfolderBase]: 21389/32665 cut-off events. [2023-08-03 19:37:48,583 INFO L125 PetriNetUnfolderBase]: For 7068/7068 co-relation queries the response was YES. [2023-08-03 19:37:48,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67783 conditions, 32665 events. 21389/32665 cut-off events. For 7068/7068 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 213101 event pairs, 14517 based on Foata normal form. 729/30798 useless extension candidates. Maximal degree in co-relation 27370. Up to 30193 conditions per place. [2023-08-03 19:37:48,745 INFO L140 encePairwiseOnDemand]: 935/940 looper letters, 51 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 19:37:48,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 322 flow [2023-08-03 19:37:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:48,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2023-08-03 19:37:48,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730496453900707 [2023-08-03 19:37:48,768 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2023-08-03 19:37:48,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2023-08-03 19:37:48,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:48,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2023-08-03 19:37:48,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:48,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:48,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:48,797 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 214 flow. Second operand 3 states and 1205 transitions. [2023-08-03 19:37:48,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 322 flow [2023-08-03 19:37:48,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:37:48,817 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 222 flow [2023-08-03 19:37:48,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-08-03 19:37:48,823 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-03 19:37:48,824 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 222 flow [2023-08-03 19:37:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 385.3333333333333) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:48,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:48,825 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:37:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:37:48,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:48,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash 259186298, now seen corresponding path program 1 times [2023-08-03 19:37:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535734657] [2023-08-03 19:37:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:37:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535734657] [2023-08-03 19:37:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535734657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:37:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 19:37:48,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509557393] [2023-08-03 19:37:48,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:48,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:48,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:37:48,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 383.6) internal successors, (1918), 5 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:48,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:48,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:37:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:53,842 INFO L124 PetriNetUnfolderBase]: 21385/32657 cut-off events. [2023-08-03 19:37:53,842 INFO L125 PetriNetUnfolderBase]: For 7062/7062 co-relation queries the response was YES. [2023-08-03 19:37:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67780 conditions, 32657 events. 21385/32657 cut-off events. For 7062/7062 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 213063 event pairs, 11616 based on Foata normal form. 4/30071 useless extension candidates. Maximal degree in co-relation 40955. Up to 30172 conditions per place. [2023-08-03 19:37:54,033 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 52 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 19:37:54,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 340 flow [2023-08-03 19:37:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:37:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:37:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1967 transitions. [2023-08-03 19:37:54,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41851063829787233 [2023-08-03 19:37:54,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1967 transitions. [2023-08-03 19:37:54,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1967 transitions. [2023-08-03 19:37:54,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:54,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1967 transitions. [2023-08-03 19:37:54,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 393.4) internal successors, (1967), 5 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:54,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:54,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:54,055 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 222 flow. Second operand 5 states and 1967 transitions. [2023-08-03 19:37:54,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 340 flow [2023-08-03 19:37:54,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:37:54,066 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 227 flow [2023-08-03 19:37:54,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-03 19:37:54,067 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-03 19:37:54,067 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 227 flow [2023-08-03 19:37:54,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 383.6) internal successors, (1918), 5 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:54,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:54,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:54,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 19:37:54,069 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)] === [2023-08-03 19:37:54,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1874849306, now seen corresponding path program 1 times [2023-08-03 19:37:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974357264] [2023-08-03 19:37:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:37:54,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:54,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974357264] [2023-08-03 19:37:54,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974357264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106280285] [2023-08-03 19:37:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:54,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:54,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:54,150 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) [2023-08-03 19:37:54,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:37:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:54,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:37:54,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:37:54,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:37:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106280285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:37:54,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:37:54,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:37:54,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721495311] [2023-08-03 19:37:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:37:54,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:37:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:37:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:54,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:37:54,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:54,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:54,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:37:54,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:37:58,694 INFO L124 PetriNetUnfolderBase]: 21171/32347 cut-off events. [2023-08-03 19:37:58,694 INFO L125 PetriNetUnfolderBase]: For 5755/5755 co-relation queries the response was YES. [2023-08-03 19:37:58,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66402 conditions, 32347 events. 21171/32347 cut-off events. For 5755/5755 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 211856 event pairs, 14440 based on Foata normal form. 0/29829 useless extension candidates. Maximal degree in co-relation 28930. Up to 29811 conditions per place. [2023-08-03 19:37:58,839 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 54 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 19:37:58,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 351 flow [2023-08-03 19:37:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:37:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:37:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2023-08-03 19:37:58,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42730496453900707 [2023-08-03 19:37:58,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2023-08-03 19:37:58,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2023-08-03 19:37:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:37:58,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2023-08-03 19:37:58,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:58,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:58,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:58,855 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 227 flow. Second operand 3 states and 1205 transitions. [2023-08-03 19:37:58,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 351 flow [2023-08-03 19:37:58,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 344 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:37:58,861 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 235 flow [2023-08-03 19:37:58,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2023-08-03 19:37:58,863 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-03 19:37:58,863 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 235 flow [2023-08-03 19:37:58,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 386.6666666666667) internal successors, (1160), 3 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:58,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:37:58,864 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:37:58,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:37:59,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:59,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:37:59,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:37:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1787765762, now seen corresponding path program 1 times [2023-08-03 19:37:59,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:37:59,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802519902] [2023-08-03 19:37:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:37:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:37:59,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:37:59,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802519902] [2023-08-03 19:37:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802519902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:37:59,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290342147] [2023-08-03 19:37:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:37:59,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:37:59,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:37:59,137 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) [2023-08-03 19:37:59,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:37:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:37:59,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:37:59,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:37:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:37:59,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:37:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 19:37:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290342147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:37:59,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:37:59,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:37:59,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013731819] [2023-08-03 19:37:59,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:37:59,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:37:59,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:37:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:37:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:37:59,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:37:59,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:37:59,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:37:59,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:37:59,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:03,930 INFO L124 PetriNetUnfolderBase]: 20579/31345 cut-off events. [2023-08-03 19:38:03,930 INFO L125 PetriNetUnfolderBase]: For 5589/5589 co-relation queries the response was YES. [2023-08-03 19:38:03,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64410 conditions, 31345 events. 20579/31345 cut-off events. For 5589/5589 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 202430 event pairs, 11374 based on Foata normal form. 2/28963 useless extension candidates. Maximal degree in co-relation 24983. Up to 28967 conditions per place. [2023-08-03 19:38:04,093 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 53 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 19:38:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 348 flow [2023-08-03 19:38:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1584 transitions. [2023-08-03 19:38:04,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42127659574468085 [2023-08-03 19:38:04,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1584 transitions. [2023-08-03 19:38:04,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1584 transitions. [2023-08-03 19:38:04,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:04,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1584 transitions. [2023-08-03 19:38:04,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:04,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:04,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:04,111 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 235 flow. Second operand 4 states and 1584 transitions. [2023-08-03 19:38:04,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 348 flow [2023-08-03 19:38:04,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:04,118 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 230 flow [2023-08-03 19:38:04,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:38:04,119 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:38:04,120 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 230 flow [2023-08-03 19:38:04,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:04,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:04,121 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:04,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:04,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:04,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:04,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:04,327 INFO L85 PathProgramCache]: Analyzing trace with hash 615979934, now seen corresponding path program 1 times [2023-08-03 19:38:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:04,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975741011] [2023-08-03 19:38:04,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:04,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:04,437 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:38:04,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975741011] [2023-08-03 19:38:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975741011] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:04,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645167129] [2023-08-03 19:38:04,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:04,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:04,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:04,442 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) [2023-08-03 19:38:04,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:38:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:04,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:38:04,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:38:04,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:04,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645167129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:04,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:04,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:38:04,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247351644] [2023-08-03 19:38:04,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:04,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:04,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:04,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:04,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:38:04,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:04,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:04,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:04,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:04,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:08,608 INFO L124 PetriNetUnfolderBase]: 20547/31289 cut-off events. [2023-08-03 19:38:08,608 INFO L125 PetriNetUnfolderBase]: For 5569/5569 co-relation queries the response was YES. [2023-08-03 19:38:08,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64289 conditions, 31289 events. 20547/31289 cut-off events. For 5569/5569 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 202609 event pairs, 5780 based on Foata normal form. 16/28921 useless extension candidates. Maximal degree in co-relation 39309. Up to 28798 conditions per place. [2023-08-03 19:38:08,747 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 59 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 19:38:08,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 374 flow [2023-08-03 19:38:08,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:38:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:38:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1973 transitions. [2023-08-03 19:38:08,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197872340425532 [2023-08-03 19:38:08,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1973 transitions. [2023-08-03 19:38:08,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1973 transitions. [2023-08-03 19:38:08,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:08,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1973 transitions. [2023-08-03 19:38:08,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 394.6) internal successors, (1973), 5 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:08,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:08,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:08,767 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 230 flow. Second operand 5 states and 1973 transitions. [2023-08-03 19:38:08,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 374 flow [2023-08-03 19:38:08,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 360 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:38:08,775 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 231 flow [2023-08-03 19:38:08,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-08-03 19:38:08,777 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:38:08,778 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 231 flow [2023-08-03 19:38:08,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 384.6) internal successors, (1923), 5 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:08,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:08,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:08,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:08,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:08,984 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)] === [2023-08-03 19:38:08,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:08,984 INFO L85 PathProgramCache]: Analyzing trace with hash 984644412, now seen corresponding path program 1 times [2023-08-03 19:38:08,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:08,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049100706] [2023-08-03 19:38:08,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:08,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:09,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:38:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049100706] [2023-08-03 19:38:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049100706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935519976] [2023-08-03 19:38:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:09,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:09,063 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) [2023-08-03 19:38:09,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:38:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:09,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:38:09,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 19:38:09,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935519976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:09,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:38:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301062358] [2023-08-03 19:38:09,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:09,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:38:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:38:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:09,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:38:09,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:09,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:09,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:38:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:13,144 INFO L124 PetriNetUnfolderBase]: 20523/31769 cut-off events. [2023-08-03 19:38:13,144 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2023-08-03 19:38:13,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64090 conditions, 31769 events. 20523/31769 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 211853 event pairs, 14176 based on Foata normal form. 0/29409 useless extension candidates. Maximal degree in co-relation 39199. Up to 28639 conditions per place. [2023-08-03 19:38:13,306 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:38:13,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 365 flow [2023-08-03 19:38:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:38:13,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:38:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1207 transitions. [2023-08-03 19:38:13,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280141843971631 [2023-08-03 19:38:13,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1207 transitions. [2023-08-03 19:38:13,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1207 transitions. [2023-08-03 19:38:13,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:13,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1207 transitions. [2023-08-03 19:38:13,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.3333333333333) internal successors, (1207), 3 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:13,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:13,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:13,317 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 231 flow. Second operand 3 states and 1207 transitions. [2023-08-03 19:38:13,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 365 flow [2023-08-03 19:38:13,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 358 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:38:13,325 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 239 flow [2023-08-03 19:38:13,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-08-03 19:38:13,326 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-03 19:38:13,326 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 239 flow [2023-08-03 19:38:13,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:13,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:13,327 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:13,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 19:38:13,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:13,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:13,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash 27674540, now seen corresponding path program 1 times [2023-08-03 19:38:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646625208] [2023-08-03 19:38:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:13,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646625208] [2023-08-03 19:38:13,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646625208] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909290191] [2023-08-03 19:38:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:13,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:13,601 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) [2023-08-03 19:38:13,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:38:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:13,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:38:13,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:13,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:13,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909290191] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:13,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:13,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:38:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801719137] [2023-08-03 19:38:13,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:13,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:13,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:13,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:13,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:13,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 385.6) internal successors, (1928), 5 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:13,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:13,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:13,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:17,713 INFO L124 PetriNetUnfolderBase]: 20139/31185 cut-off events. [2023-08-03 19:38:17,713 INFO L125 PetriNetUnfolderBase]: For 3462/3462 co-relation queries the response was YES. [2023-08-03 19:38:17,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63063 conditions, 31185 events. 20139/31185 cut-off events. For 3462/3462 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 207367 event pairs, 11426 based on Foata normal form. 8/28985 useless extension candidates. Maximal degree in co-relation 38765. Up to 28255 conditions per place. [2023-08-03 19:38:17,837 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 58 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 19:38:17,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 370 flow [2023-08-03 19:38:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:17,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1588 transitions. [2023-08-03 19:38:17,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223404255319149 [2023-08-03 19:38:17,841 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1588 transitions. [2023-08-03 19:38:17,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1588 transitions. [2023-08-03 19:38:17,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:17,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1588 transitions. [2023-08-03 19:38:17,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 397.0) internal successors, (1588), 4 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:17,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:17,850 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:17,850 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 239 flow. Second operand 4 states and 1588 transitions. [2023-08-03 19:38:17,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 370 flow [2023-08-03 19:38:17,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:17,855 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 234 flow [2023-08-03 19:38:17,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 19:38:17,856 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:38:17,856 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 234 flow [2023-08-03 19:38:17,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 385.6) internal successors, (1928), 5 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:17,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:17,857 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:17,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:18,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:18,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:18,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash -2116167667, now seen corresponding path program 1 times [2023-08-03 19:38:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654893422] [2023-08-03 19:38:18,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:18,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:38:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654893422] [2023-08-03 19:38:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654893422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577052118] [2023-08-03 19:38:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:18,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:18,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:38:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:18,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:38:18,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:38:18,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577052118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:18,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:38:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159452989] [2023-08-03 19:38:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:18,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:38:18,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 385.6) internal successors, (1928), 5 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:18,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:22,474 INFO L124 PetriNetUnfolderBase]: 19947/30897 cut-off events. [2023-08-03 19:38:22,474 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2023-08-03 19:38:22,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62451 conditions, 30897 events. 19947/30897 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 206315 event pairs, 686 based on Foata normal form. 64/28753 useless extension candidates. Maximal degree in co-relation 38491. Up to 27286 conditions per place. [2023-08-03 19:38:22,640 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 66 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 19:38:22,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 404 flow [2023-08-03 19:38:22,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:38:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:38:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1979 transitions. [2023-08-03 19:38:22,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42106382978723406 [2023-08-03 19:38:22,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1979 transitions. [2023-08-03 19:38:22,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1979 transitions. [2023-08-03 19:38:22,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:22,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1979 transitions. [2023-08-03 19:38:22,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 395.8) internal successors, (1979), 5 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:22,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:22,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 940.0) internal successors, (5640), 6 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:22,655 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 234 flow. Second operand 5 states and 1979 transitions. [2023-08-03 19:38:22,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 404 flow [2023-08-03 19:38:22,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:38:22,662 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 235 flow [2023-08-03 19:38:22,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-03 19:38:22,663 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:38:22,663 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 235 flow [2023-08-03 19:38:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 385.6) internal successors, (1928), 5 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:22,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:22,664 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:22,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:22,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:22,870 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)] === [2023-08-03 19:38:22,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash -500991638, now seen corresponding path program 1 times [2023-08-03 19:38:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:22,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221096789] [2023-08-03 19:38:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:22,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:38:22,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:22,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221096789] [2023-08-03 19:38:22,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221096789] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:22,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086601017] [2023-08-03 19:38:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:22,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:22,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:38:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:23,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:38:23,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:38:23,013 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086601017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:23,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:23,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:38:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966040653] [2023-08-03 19:38:23,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:23,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:38:23,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:23,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:38:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:23,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:38:23,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:23,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:23,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:38:23,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:26,538 INFO L124 PetriNetUnfolderBase]: 17819/27777 cut-off events. [2023-08-03 19:38:26,538 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2023-08-03 19:38:26,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55999 conditions, 27777 events. 17819/27777 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 183784 event pairs, 13419 based on Foata normal form. 0/25761 useless extension candidates. Maximal degree in co-relation 35159. Up to 23711 conditions per place. [2023-08-03 19:38:26,700 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:38:26,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 411 flow [2023-08-03 19:38:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:38:26,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:38:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-08-03 19:38:26,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43049645390070923 [2023-08-03 19:38:26,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-08-03 19:38:26,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-08-03 19:38:26,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:26,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-08-03 19:38:26,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,707 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 235 flow. Second operand 3 states and 1214 transitions. [2023-08-03 19:38:26,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 411 flow [2023-08-03 19:38:26,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 404 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:38:26,714 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 243 flow [2023-08-03 19:38:26,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-03 19:38:26,715 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-03 19:38:26,715 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 243 flow [2023-08-03 19:38:26,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.3333333333333) internal successors, (1168), 3 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:26,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:26,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:38:26,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:26,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:26,920 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)] === [2023-08-03 19:38:26,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:26,921 INFO L85 PathProgramCache]: Analyzing trace with hash 9687073, now seen corresponding path program 1 times [2023-08-03 19:38:26,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756850064] [2023-08-03 19:38:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:26,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:38:26,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756850064] [2023-08-03 19:38:26,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756850064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:26,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306447453] [2023-08-03 19:38:26,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:26,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:26,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:26,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:26,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:38:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:27,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:38:27,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:27,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:27,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306447453] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:27,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:38:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151835300] [2023-08-03 19:38:27,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:27,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:38:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:27,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:38:27,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:27,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:38:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:38:27,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:30,448 INFO L124 PetriNetUnfolderBase]: 17130/27060 cut-off events. [2023-08-03 19:38:30,448 INFO L125 PetriNetUnfolderBase]: For 4055/4055 co-relation queries the response was YES. [2023-08-03 19:38:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56584 conditions, 27060 events. 17130/27060 cut-off events. For 4055/4055 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 182790 event pairs, 11236 based on Foata normal form. 0/26093 useless extension candidates. Maximal degree in co-relation 36662. Up to 18927 conditions per place. [2023-08-03 19:38:30,607 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 19:38:30,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 421 flow [2023-08-03 19:38:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:38:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:38:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-08-03 19:38:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43049645390070923 [2023-08-03 19:38:30,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-08-03 19:38:30,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-08-03 19:38:30,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:30,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-08-03 19:38:30,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:30,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:30,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:30,614 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 243 flow. Second operand 3 states and 1214 transitions. [2023-08-03 19:38:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 421 flow [2023-08-03 19:38:30,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:30,622 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 252 flow [2023-08-03 19:38:30,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-08-03 19:38:30,622 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-03 19:38:30,622 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 252 flow [2023-08-03 19:38:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.6666666666667) internal successors, (1172), 3 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:30,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:38:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 19:38:30,825 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)] === [2023-08-03 19:38:30,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2055624505, now seen corresponding path program 1 times [2023-08-03 19:38:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982385528] [2023-08-03 19:38:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:38:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982385528] [2023-08-03 19:38:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982385528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:30,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793091777] [2023-08-03 19:38:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:30,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:30,917 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:30,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:38:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:31,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:38:31,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:38:31,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:38:31,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793091777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:38:31,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:38:31,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:38:31,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175230155] [2023-08-03 19:38:31,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:38:31,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:38:31,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:38:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:31,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 383 out of 940 [2023-08-03 19:38:31,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:31,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:31,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 383 of 940 [2023-08-03 19:38:31,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:34,372 INFO L124 PetriNetUnfolderBase]: 16921/26743 cut-off events. [2023-08-03 19:38:34,372 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:38:34,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58316 conditions, 26743 events. 16921/26743 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 178212 event pairs, 12627 based on Foata normal form. 0/26489 useless extension candidates. Maximal degree in co-relation 38391. Up to 21081 conditions per place. [2023-08-03 19:38:34,519 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 68 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-03 19:38:34,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 432 flow [2023-08-03 19:38:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:38:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:38:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-08-03 19:38:34,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43049645390070923 [2023-08-03 19:38:34,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-08-03 19:38:34,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-08-03 19:38:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:34,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-08-03 19:38:34,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:34,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:34,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 940.0) internal successors, (3760), 4 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:34,528 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 252 flow. Second operand 3 states and 1214 transitions. [2023-08-03 19:38:34,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 432 flow [2023-08-03 19:38:34,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 430 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:34,731 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 262 flow [2023-08-03 19:38:34,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2023-08-03 19:38:34,731 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-08-03 19:38:34,731 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 262 flow [2023-08-03 19:38:34,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:34,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:34,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:34,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:34,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:34,932 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)] === [2023-08-03 19:38:34,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1960489446, now seen corresponding path program 1 times [2023-08-03 19:38:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536504209] [2023-08-03 19:38:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:38:35,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:35,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536504209] [2023-08-03 19:38:35,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536504209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:35,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843582319] [2023-08-03 19:38:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:35,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:35,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:35,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:35,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:38:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:35,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:38:35,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:38:35,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:38:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843582319] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:35,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:38:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133427459] [2023-08-03 19:38:35,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:35,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:35,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:35,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:35,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 389.0) internal successors, (1945), 5 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:35,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:35,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:35,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:38,518 INFO L124 PetriNetUnfolderBase]: 16521/26119 cut-off events. [2023-08-03 19:38:38,519 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:38:38,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57697 conditions, 26119 events. 16521/26119 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 172506 event pairs, 9695 based on Foata normal form. 32/26130 useless extension candidates. Maximal degree in co-relation 42454. Up to 23507 conditions per place. [2023-08-03 19:38:38,699 INFO L140 encePairwiseOnDemand]: 937/940 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:38:38,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 416 flow [2023-08-03 19:38:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1592 transitions. [2023-08-03 19:38:38,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42340425531914894 [2023-08-03 19:38:38,702 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1592 transitions. [2023-08-03 19:38:38,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1592 transitions. [2023-08-03 19:38:38,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:38,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1592 transitions. [2023-08-03 19:38:38,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 398.0) internal successors, (1592), 4 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:38,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:38,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:38,707 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 262 flow. Second operand 4 states and 1592 transitions. [2023-08-03 19:38:38,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 416 flow [2023-08-03 19:38:39,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:39,022 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 258 flow [2023-08-03 19:38:39,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-03 19:38:39,023 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-08-03 19:38:39,023 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 258 flow [2023-08-03 19:38:39,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.0) internal successors, (1945), 5 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:39,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:39,024 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:39,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 19:38:39,224 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)] === [2023-08-03 19:38:39,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1474747032, now seen corresponding path program 1 times [2023-08-03 19:38:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509946577] [2023-08-03 19:38:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:39,300 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:38:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509946577] [2023-08-03 19:38:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509946577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669835223] [2023-08-03 19:38:39,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:39,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:39,302 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:39,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:38:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:39,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:38:39,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:38:39,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 19:38:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669835223] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:39,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:38:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937249580] [2023-08-03 19:38:39,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:39,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:39,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 389.2) internal successors, (1946), 5 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:39,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:39,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:39,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:41,713 INFO L124 PetriNetUnfolderBase]: 10381/16595 cut-off events. [2023-08-03 19:38:41,714 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:38:41,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36824 conditions, 16595 events. 10381/16595 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 100964 event pairs, 5440 based on Foata normal form. 192/16766 useless extension candidates. Maximal degree in co-relation 31654. Up to 9564 conditions per place. [2023-08-03 19:38:41,805 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 72 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 19:38:41,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 462 flow [2023-08-03 19:38:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:41,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1600 transitions. [2023-08-03 19:38:41,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-08-03 19:38:41,809 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1600 transitions. [2023-08-03 19:38:41,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1600 transitions. [2023-08-03 19:38:41,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:41,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1600 transitions. [2023-08-03 19:38:41,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:41,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:41,814 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:41,814 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 258 flow. Second operand 4 states and 1600 transitions. [2023-08-03 19:38:41,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 462 flow [2023-08-03 19:38:41,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 456 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:38:41,882 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 272 flow [2023-08-03 19:38:41,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-08-03 19:38:41,883 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-03 19:38:41,883 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 272 flow [2023-08-03 19:38:41,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.2) internal successors, (1946), 5 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:41,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:41,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:41,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:42,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 19:38:42,084 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:42,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -375089594, now seen corresponding path program 1 times [2023-08-03 19:38:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462283370] [2023-08-03 19:38:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:38:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:42,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462283370] [2023-08-03 19:38:42,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462283370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:42,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806327914] [2023-08-03 19:38:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:42,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:42,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:42,165 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:42,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:38:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:42,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:38:42,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:38:42,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:38:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806327914] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:42,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:38:42,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859382531] [2023-08-03 19:38:42,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:42,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:42,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 389.6) internal successors, (1948), 5 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:42,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:44,271 INFO L124 PetriNetUnfolderBase]: 9421/14944 cut-off events. [2023-08-03 19:38:44,271 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:38:44,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35882 conditions, 14944 events. 9421/14944 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88203 event pairs, 5948 based on Foata normal form. 233/15156 useless extension candidates. Maximal degree in co-relation 34761. Up to 8751 conditions per place. [2023-08-03 19:38:44,335 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 73 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-03 19:38:44,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 478 flow [2023-08-03 19:38:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1600 transitions. [2023-08-03 19:38:44,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-08-03 19:38:44,338 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1600 transitions. [2023-08-03 19:38:44,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1600 transitions. [2023-08-03 19:38:44,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:44,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1600 transitions. [2023-08-03 19:38:44,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,345 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,345 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 272 flow. Second operand 4 states and 1600 transitions. [2023-08-03 19:38:44,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 478 flow [2023-08-03 19:38:44,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 474 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:44,422 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 288 flow [2023-08-03 19:38:44,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-08-03 19:38:44,423 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-03 19:38:44,423 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 288 flow [2023-08-03 19:38:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.6) internal successors, (1948), 5 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:44,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:44,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:44,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 19:38:44,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:44,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash -332873474, now seen corresponding path program 1 times [2023-08-03 19:38:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608212612] [2023-08-03 19:38:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:44,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608212612] [2023-08-03 19:38:44,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608212612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840136171] [2023-08-03 19:38:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:44,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:44,713 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:44,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:38:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:44,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:38:44,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:44,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:38:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:38:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840136171] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:38:44,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:38:44,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:38:44,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139574832] [2023-08-03 19:38:44,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:38:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:38:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:38:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:38:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:38:44,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 940 [2023-08-03 19:38:44,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:44,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:38:44,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 940 [2023-08-03 19:38:44,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:38:46,901 INFO L124 PetriNetUnfolderBase]: 9409/14897 cut-off events. [2023-08-03 19:38:46,902 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:38:46,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37503 conditions, 14897 events. 9409/14897 cut-off events. For 7481/7481 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 87832 event pairs, 8414 based on Foata normal form. 13/14889 useless extension candidates. Maximal degree in co-relation 36401. Up to 13454 conditions per place. [2023-08-03 19:38:46,969 INFO L140 encePairwiseOnDemand]: 936/940 looper letters, 72 selfloop transitions, 3 changer transitions 3/85 dead transitions. [2023-08-03 19:38:46,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 496 flow [2023-08-03 19:38:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:38:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:38:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1600 transitions. [2023-08-03 19:38:46,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-08-03 19:38:46,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1600 transitions. [2023-08-03 19:38:46,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1600 transitions. [2023-08-03 19:38:46,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:38:46,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1600 transitions. [2023-08-03 19:38:46,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 400.0) internal successors, (1600), 4 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:46,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:46,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 940.0) internal successors, (4700), 5 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:46,977 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 288 flow. Second operand 4 states and 1600 transitions. [2023-08-03 19:38:46,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 496 flow [2023-08-03 19:38:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 492 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:38:47,106 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 286 flow [2023-08-03 19:38:47,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2023-08-03 19:38:47,106 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-08-03 19:38:47,106 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 286 flow [2023-08-03 19:38:47,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:38:47,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:38:47,107 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:38:47,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 19:38:47,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 19:38:47,308 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:38:47,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:38:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash 181460697, now seen corresponding path program 1 times [2023-08-03 19:38:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:38:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956762648] [2023-08-03 19:38:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:38:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 19:38:51,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:38:51,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956762648] [2023-08-03 19:38:51,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956762648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:38:51,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033491183] [2023-08-03 19:38:51,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:38:51,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:38:51,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:38:51,670 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:38:51,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:38:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:38:51,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-03 19:38:51,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:38:59,961 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:38:59,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:39:04,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033491183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:04,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:04,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-03 19:39:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069461261] [2023-08-03 19:39:04,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:39:04,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:39:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:39:05,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 336 out of 940 [2023-08-03 19:39:05,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 286 flow. Second operand has 13 states, 13 states have (on average 342.61538461538464) internal successors, (4454), 13 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:05,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:05,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 336 of 940 [2023-08-03 19:39:05,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:11,055 INFO L124 PetriNetUnfolderBase]: 15094/24028 cut-off events. [2023-08-03 19:39:11,055 INFO L125 PetriNetUnfolderBase]: For 16491/16491 co-relation queries the response was YES. [2023-08-03 19:39:11,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60175 conditions, 24028 events. 15094/24028 cut-off events. For 16491/16491 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 163039 event pairs, 1385 based on Foata normal form. 2/23889 useless extension candidates. Maximal degree in co-relation 60088. Up to 6570 conditions per place. [2023-08-03 19:39:11,141 INFO L140 encePairwiseOnDemand]: 931/940 looper letters, 160 selfloop transitions, 13 changer transitions 93/273 dead transitions. [2023-08-03 19:39:11,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 273 transitions, 1825 flow [2023-08-03 19:39:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 19:39:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 19:39:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3599 transitions. [2023-08-03 19:39:11,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828723404255319 [2023-08-03 19:39:11,147 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3599 transitions. [2023-08-03 19:39:11,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3599 transitions. [2023-08-03 19:39:11,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:11,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3599 transitions. [2023-08-03 19:39:11,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 359.9) internal successors, (3599), 10 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:11,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 940.0) internal successors, (10340), 11 states have internal predecessors, (10340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:11,157 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 940.0) internal successors, (10340), 11 states have internal predecessors, (10340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:11,157 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 286 flow. Second operand 10 states and 3599 transitions. [2023-08-03 19:39:11,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 273 transitions, 1825 flow [2023-08-03 19:39:11,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 273 transitions, 1775 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 19:39:11,412 INFO L231 Difference]: Finished difference. Result has 97 places, 75 transitions, 400 flow [2023-08-03 19:39:11,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=400, PETRI_PLACES=97, PETRI_TRANSITIONS=75} [2023-08-03 19:39:11,412 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 41 predicate places. [2023-08-03 19:39:11,412 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 75 transitions, 400 flow [2023-08-03 19:39:11,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 342.61538461538464) internal successors, (4454), 13 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:11,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:11,413 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:39:11,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:39:11,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:11,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:11,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2052997645, now seen corresponding path program 2 times [2023-08-03 19:39:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:11,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660445750] [2023-08-03 19:39:11,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:11,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:39:14,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660445750] [2023-08-03 19:39:14,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660445750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:14,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141544217] [2023-08-03 19:39:14,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:39:14,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:14,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:14,787 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:14,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:39:14,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:39:14,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:39:14,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-03 19:39:14,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:39:18,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:39:20,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141544217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:20,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:20,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-08-03 19:39:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869245398] [2023-08-03 19:39:20,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:39:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:20,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:39:20,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:39:23,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 940 [2023-08-03 19:39:23,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 75 transitions, 400 flow. Second operand has 16 states, 16 states have (on average 336.5625) internal successors, (5385), 16 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:23,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:23,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 940 [2023-08-03 19:39:23,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:29,351 INFO L124 PetriNetUnfolderBase]: 15274/25586 cut-off events. [2023-08-03 19:39:29,351 INFO L125 PetriNetUnfolderBase]: For 77129/77129 co-relation queries the response was YES. [2023-08-03 19:39:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97926 conditions, 25586 events. 15274/25586 cut-off events. For 77129/77129 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 189187 event pairs, 2430 based on Foata normal form. 1/25478 useless extension candidates. Maximal degree in co-relation 97882. Up to 10924 conditions per place. [2023-08-03 19:39:29,500 INFO L140 encePairwiseOnDemand]: 931/940 looper letters, 135 selfloop transitions, 10 changer transitions 74/226 dead transitions. [2023-08-03 19:39:29,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 226 transitions, 1672 flow [2023-08-03 19:39:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:39:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:39:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3182 transitions. [2023-08-03 19:39:29,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37612293144208037 [2023-08-03 19:39:29,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3182 transitions. [2023-08-03 19:39:29,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3182 transitions. [2023-08-03 19:39:29,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:29,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3182 transitions. [2023-08-03 19:39:29,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 353.55555555555554) internal successors, (3182), 9 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 940.0) internal successors, (9400), 10 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,513 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 940.0) internal successors, (9400), 10 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:29,513 INFO L175 Difference]: Start difference. First operand has 97 places, 75 transitions, 400 flow. Second operand 9 states and 3182 transitions. [2023-08-03 19:39:29,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 226 transitions, 1672 flow [2023-08-03 19:39:30,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 226 transitions, 1664 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-03 19:39:30,025 INFO L231 Difference]: Finished difference. Result has 103 places, 74 transitions, 443 flow [2023-08-03 19:39:30,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=443, PETRI_PLACES=103, PETRI_TRANSITIONS=74} [2023-08-03 19:39:30,025 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 47 predicate places. [2023-08-03 19:39:30,025 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 74 transitions, 443 flow [2023-08-03 19:39:30,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 336.5625) internal successors, (5385), 16 states have internal predecessors, (5385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:30,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:30,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:39:30,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:39:30,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:39:30,227 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:30,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 520847557, now seen corresponding path program 1 times [2023-08-03 19:39:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:30,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627019472] [2023-08-03 19:39:30,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:31,150 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 19:39:31,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:31,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627019472] [2023-08-03 19:39:31,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627019472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:31,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867796691] [2023-08-03 19:39:31,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:31,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:31,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:31,152 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:31,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:39:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:31,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-03 19:39:31,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:39:35,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:39:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-08-03 19:39:36,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867796691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:39:36,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:39:36,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2023-08-03 19:39:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234108192] [2023-08-03 19:39:36,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:39:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:39:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:39:36,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:39:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:39:40,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 940 [2023-08-03 19:39:40,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 74 transitions, 443 flow. Second operand has 21 states, 21 states have (on average 344.3809523809524) internal successors, (7232), 21 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:40,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:39:40,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 940 [2023-08-03 19:39:40,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:39:50,670 INFO L124 PetriNetUnfolderBase]: 17462/30241 cut-off events. [2023-08-03 19:39:50,670 INFO L125 PetriNetUnfolderBase]: For 139276/139276 co-relation queries the response was YES. [2023-08-03 19:39:50,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126442 conditions, 30241 events. 17462/30241 cut-off events. For 139276/139276 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 239474 event pairs, 2877 based on Foata normal form. 375/30534 useless extension candidates. Maximal degree in co-relation 126398. Up to 10577 conditions per place. [2023-08-03 19:39:50,916 INFO L140 encePairwiseOnDemand]: 919/940 looper letters, 219 selfloop transitions, 85 changer transitions 21/330 dead transitions. [2023-08-03 19:39:50,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 330 transitions, 2868 flow [2023-08-03 19:39:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-03 19:39:50,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-03 19:39:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9420 transitions. [2023-08-03 19:39:50,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37115839243498816 [2023-08-03 19:39:50,927 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9420 transitions. [2023-08-03 19:39:50,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9420 transitions. [2023-08-03 19:39:50,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:39:50,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9420 transitions. [2023-08-03 19:39:50,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 348.8888888888889) internal successors, (9420), 27 states have internal predecessors, (9420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 940.0) internal successors, (26320), 28 states have internal predecessors, (26320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,959 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 940.0) internal successors, (26320), 28 states have internal predecessors, (26320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:50,960 INFO L175 Difference]: Start difference. First operand has 103 places, 74 transitions, 443 flow. Second operand 27 states and 9420 transitions. [2023-08-03 19:39:50,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 330 transitions, 2868 flow [2023-08-03 19:39:51,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 330 transitions, 2662 flow, removed 84 selfloop flow, removed 5 redundant places. [2023-08-03 19:39:51,546 INFO L231 Difference]: Finished difference. Result has 133 places, 149 transitions, 1358 flow [2023-08-03 19:39:51,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1358, PETRI_PLACES=133, PETRI_TRANSITIONS=149} [2023-08-03 19:39:51,546 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2023-08-03 19:39:51,546 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 149 transitions, 1358 flow [2023-08-03 19:39:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 344.3809523809524) internal successors, (7232), 21 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:39:51,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:39:51,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:39:51,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-03 19:39:51,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:51,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:39:51,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:39:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash 727526281, now seen corresponding path program 1 times [2023-08-03 19:39:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:39:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681923163] [2023-08-03 19:39:51,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:51,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:39:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 19:39:52,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:39:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681923163] [2023-08-03 19:39:52,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681923163] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:39:52,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307124436] [2023-08-03 19:39:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:39:52,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:39:52,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:39:52,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:39:52,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:39:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:39:52,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-03 19:39:52,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:39:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:39:59,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-08-03 19:40:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307124436] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:04,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:04,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2023-08-03 19:40:04,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190422742] [2023-08-03 19:40:04,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:04,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-03 19:40:04,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:04,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-03 19:40:04,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-08-03 19:40:08,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 940 [2023-08-03 19:40:08,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 149 transitions, 1358 flow. Second operand has 18 states, 18 states have (on average 345.3888888888889) internal successors, (6217), 18 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:08,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:08,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 940 [2023-08-03 19:40:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:20,072 INFO L124 PetriNetUnfolderBase]: 19497/33778 cut-off events. [2023-08-03 19:40:20,072 INFO L125 PetriNetUnfolderBase]: For 295797/295842 co-relation queries the response was YES. [2023-08-03 19:40:20,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184980 conditions, 33778 events. 19497/33778 cut-off events. For 295797/295842 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 270158 event pairs, 3086 based on Foata normal form. 141/33916 useless extension candidates. Maximal degree in co-relation 184926. Up to 17375 conditions per place. [2023-08-03 19:40:20,274 INFO L140 encePairwiseOnDemand]: 921/940 looper letters, 159 selfloop transitions, 59 changer transitions 168/394 dead transitions. [2023-08-03 19:40:20,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 394 transitions, 4084 flow [2023-08-03 19:40:20,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-03 19:40:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-03 19:40:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 9086 transitions. [2023-08-03 19:40:20,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37176759410801963 [2023-08-03 19:40:20,284 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 9086 transitions. [2023-08-03 19:40:20,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 9086 transitions. [2023-08-03 19:40:20,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:20,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 9086 transitions. [2023-08-03 19:40:20,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 349.46153846153845) internal successors, (9086), 26 states have internal predecessors, (9086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:20,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 940.0) internal successors, (25380), 27 states have internal predecessors, (25380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:20,314 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 940.0) internal successors, (25380), 27 states have internal predecessors, (25380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:20,315 INFO L175 Difference]: Start difference. First operand has 133 places, 149 transitions, 1358 flow. Second operand 26 states and 9086 transitions. [2023-08-03 19:40:20,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 394 transitions, 4084 flow [2023-08-03 19:40:22,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 394 transitions, 3821 flow, removed 100 selfloop flow, removed 10 redundant places. [2023-08-03 19:40:22,170 INFO L231 Difference]: Finished difference. Result has 157 places, 129 transitions, 1175 flow [2023-08-03 19:40:22,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1175, PETRI_PLACES=157, PETRI_TRANSITIONS=129} [2023-08-03 19:40:22,170 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 101 predicate places. [2023-08-03 19:40:22,170 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 129 transitions, 1175 flow [2023-08-03 19:40:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 345.3888888888889) internal successors, (6217), 18 states have internal predecessors, (6217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:22,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:22,171 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:40:22,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:22,372 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:22,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1913257173, now seen corresponding path program 2 times [2023-08-03 19:40:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73915388] [2023-08-03 19:40:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:22,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73915388] [2023-08-03 19:40:25,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73915388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996085749] [2023-08-03 19:40:25,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:40:25,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:25,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:25,949 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:25,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:40:26,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:40:26,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:40:26,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-03 19:40:26,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:29,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996085749] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:31,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:31,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-03 19:40:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131105930] [2023-08-03 19:40:31,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:40:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:40:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:40:32,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 940 [2023-08-03 19:40:32,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 129 transitions, 1175 flow. Second operand has 14 states, 14 states have (on average 350.07142857142856) internal successors, (4901), 14 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:32,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:32,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 940 [2023-08-03 19:40:32,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:36,705 INFO L124 PetriNetUnfolderBase]: 7802/14928 cut-off events. [2023-08-03 19:40:36,705 INFO L125 PetriNetUnfolderBase]: For 158642/160369 co-relation queries the response was YES. [2023-08-03 19:40:36,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87678 conditions, 14928 events. 7802/14928 cut-off events. For 158642/160369 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 120919 event pairs, 1051 based on Foata normal form. 198/15068 useless extension candidates. Maximal degree in co-relation 87624. Up to 6689 conditions per place. [2023-08-03 19:40:36,796 INFO L140 encePairwiseOnDemand]: 931/940 looper letters, 126 selfloop transitions, 43 changer transitions 10/193 dead transitions. [2023-08-03 19:40:36,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 193 transitions, 1969 flow [2023-08-03 19:40:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:40:36,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:40:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2524 transitions. [2023-08-03 19:40:36,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38358662613981764 [2023-08-03 19:40:36,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2524 transitions. [2023-08-03 19:40:36,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2524 transitions. [2023-08-03 19:40:36,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:36,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2524 transitions. [2023-08-03 19:40:36,803 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) [2023-08-03 19:40:36,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 940.0) internal successors, (7520), 8 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:36,807 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 940.0) internal successors, (7520), 8 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:36,807 INFO L175 Difference]: Start difference. First operand has 157 places, 129 transitions, 1175 flow. Second operand 7 states and 2524 transitions. [2023-08-03 19:40:36,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 193 transitions, 1969 flow [2023-08-03 19:40:37,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 193 transitions, 1800 flow, removed 66 selfloop flow, removed 17 redundant places. [2023-08-03 19:40:37,527 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1213 flow [2023-08-03 19:40:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1213, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2023-08-03 19:40:37,527 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 77 predicate places. [2023-08-03 19:40:37,528 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1213 flow [2023-08-03 19:40:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 350.07142857142856) internal successors, (4901), 14 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:37,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:40:37,528 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:40:37,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:37,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:37,730 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 19:40:37,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:40:37,730 INFO L85 PathProgramCache]: Analyzing trace with hash 92337349, now seen corresponding path program 1 times [2023-08-03 19:40:37,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:40:37,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013098495] [2023-08-03 19:40:37,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:37,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:40:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:40,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:40:40,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013098495] [2023-08-03 19:40:40,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013098495] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:40:40,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35159489] [2023-08-03 19:40:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:40:40,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:40,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:40:40,131 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:40:40,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-03 19:40:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:40:40,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-03 19:40:40,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:40:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:44,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:40:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:40:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35159489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:40:46,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:40:46,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-03 19:40:46,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102875588] [2023-08-03 19:40:46,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:40:46,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:40:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:40:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:40:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:40:49,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 940 [2023-08-03 19:40:49,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1213 flow. Second operand has 13 states, 13 states have (on average 349.53846153846155) internal successors, (4544), 13 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:49,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:40:49,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 940 [2023-08-03 19:40:49,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:40:52,459 INFO L124 PetriNetUnfolderBase]: 7308/14390 cut-off events. [2023-08-03 19:40:52,459 INFO L125 PetriNetUnfolderBase]: For 146955/148335 co-relation queries the response was YES. [2023-08-03 19:40:52,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83263 conditions, 14390 events. 7308/14390 cut-off events. For 146955/148335 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 119678 event pairs, 982 based on Foata normal form. 180/14513 useless extension candidates. Maximal degree in co-relation 83225. Up to 6335 conditions per place. [2023-08-03 19:40:52,543 INFO L140 encePairwiseOnDemand]: 931/940 looper letters, 0 selfloop transitions, 0 changer transitions 201/201 dead transitions. [2023-08-03 19:40:52,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 201 transitions, 2018 flow [2023-08-03 19:40:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 19:40:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 19:40:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2522 transitions. [2023-08-03 19:40:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832826747720365 [2023-08-03 19:40:52,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2522 transitions. [2023-08-03 19:40:52,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2522 transitions. [2023-08-03 19:40:52,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:40:52,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2522 transitions. [2023-08-03 19:40:52,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 360.2857142857143) internal successors, (2522), 7 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:52,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 940.0) internal successors, (7520), 8 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:52,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 940.0) internal successors, (7520), 8 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:52,553 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1213 flow. Second operand 7 states and 2522 transitions. [2023-08-03 19:40:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 201 transitions, 2018 flow [2023-08-03 19:40:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 201 transitions, 1936 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-03 19:40:53,000 INFO L231 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2023-08-03 19:40:53,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=940, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2023-08-03 19:40:53,001 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 74 predicate places. [2023-08-03 19:40:53,001 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2023-08-03 19:40:53,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 349.53846153846155) internal successors, (4544), 13 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:40:53,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:40:53,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:40:53,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:40:53,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:40:53,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-03 19:40:53,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:40:53,204 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:40:53,205 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:40:53,205 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:40:53,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:40:53 BasicIcfg [2023-08-03 19:40:53,208 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:40:53,208 INFO L158 Benchmark]: Toolchain (without parser) took 213101.77ms. Allocated memory was 385.9MB in the beginning and 7.7GB in the end (delta: 7.3GB). Free memory was 338.4MB in the beginning and 5.0GB in the end (delta: -4.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. [2023-08-03 19:40:53,208 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 339.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:40:53,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.96ms. Allocated memory is still 385.9MB. Free memory was 338.4MB in the beginning and 326.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:40:53,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.01ms. Allocated memory is still 385.9MB. Free memory was 326.5MB in the beginning and 324.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:53,209 INFO L158 Benchmark]: Boogie Preprocessor took 33.66ms. Allocated memory is still 385.9MB. Free memory was 324.1MB in the beginning and 322.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:53,209 INFO L158 Benchmark]: RCFGBuilder took 474.39ms. Allocated memory is still 385.9MB. Free memory was 322.2MB in the beginning and 300.0MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 19:40:53,209 INFO L158 Benchmark]: TraceAbstraction took 212281.47ms. Allocated memory was 385.9MB in the beginning and 7.7GB in the end (delta: 7.3GB). Free memory was 299.2MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-08-03 19:40:53,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 385.9MB. Free memory is still 339.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 261.96ms. Allocated memory is still 385.9MB. Free memory was 338.4MB in the beginning and 326.5MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.01ms. Allocated memory is still 385.9MB. Free memory was 326.5MB in the beginning and 324.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.66ms. Allocated memory is still 385.9MB. Free memory was 324.1MB in the beginning and 322.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 474.39ms. Allocated memory is still 385.9MB. Free memory was 322.2MB in the beginning and 300.0MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 212281.47ms. Allocated memory was 385.9MB in the beginning and 7.7GB in the end (delta: 7.3GB). Free memory was 299.2MB in the beginning and 5.0GB in the end (delta: -4.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 260 PlacesBefore, 41 PlacesAfterwards, 288 TransitionsBefore, 44 TransitionsAfterwards, 33528 CoEnabledTransitionPairs, 8 FixpointIterations, 54 TrivialSequentialCompositions, 161 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 83 ConcurrentYvCompositions, 25 ChoiceCompositions, 323 TotalNumberOfCompositions, 37799 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36109, independent: 36054, independent conditional: 0, independent unconditional: 36054, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19633, independent: 19603, independent conditional: 0, independent unconditional: 19603, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36109, independent: 16451, independent conditional: 0, independent unconditional: 16451, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 19633, unknown conditional: 0, unknown unconditional: 19633] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.9s, 383 PlacesBefore, 56 PlacesAfterwards, 432 TransitionsBefore, 62 TransitionsAfterwards, 107448 CoEnabledTransitionPairs, 8 FixpointIterations, 54 TrivialSequentialCompositions, 276 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 135 ConcurrentYvCompositions, 43 ChoiceCompositions, 508 TotalNumberOfCompositions, 131244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 125540, independent: 125454, independent conditional: 0, independent unconditional: 125454, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 62734, independent: 62685, independent conditional: 0, independent unconditional: 62685, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 125540, independent: 62769, independent conditional: 0, independent unconditional: 62769, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 62734, unknown conditional: 0, unknown unconditional: 62734] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 197, Positive conditional cache size: 0, Positive unconditional cache size: 197, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 84]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 371 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: 8.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 488 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: 203.8s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 119.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10297 SdHoareTripleChecker+Valid, 21.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9308 mSDsluCounter, 24982 SdHoareTripleChecker+Invalid, 18.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24545 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24780 IncrementalHoareTripleChecker+Invalid, 25091 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 437 mSDtfsCounter, 24780 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1615 GetRequests, 1369 SyntacticMatches, 51 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 18.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1358occurred in iteration=18, InterpolantAutomatonStates: 143, 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: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 63.2s InterpolantComputationTime, 1633 NumberOfCodeBlocks, 1633 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 2203 ConstructedInterpolants, 0 QuantifiedInterpolants, 63650 SizeOfPredicates, 452 NumberOfNonLiveVariables, 3623 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 52 InterpolantComputations, 9 PerfectInterpolantSequences, 999/1115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 19:40:53,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...