/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-simpl-str-subst.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:46:11,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:46:11,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:46:11,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:46:11,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:46:11,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:46:11,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:46:11,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:46:11,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:46:11,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:46:11,655 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:46:11,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:46:11,656 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:46:11,656 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:46:11,657 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:46:11,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:46:11,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:46:11,658 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:46:11,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:46:11,658 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:46:11,658 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:46:11,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:46:11,659 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:46:11,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:46:11,660 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:46:11,660 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:46:11,660 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:46:11,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:46:11,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:46:11,661 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:46:11,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:46:11,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:46:11,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:46:11,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:46:11,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:46:11,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:46:11,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:46:11,664 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:46:11,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:46:11,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:46:11,665 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:46:11,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:46:11,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:46:11,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:46:11,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:46:11,901 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:46:11,902 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:46:11,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-subst.wvr_bound2.c [2023-08-03 19:46:13,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:46:13,262 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:46:13,263 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-simpl-str-subst.wvr_bound2.c [2023-08-03 19:46:13,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe07fd0cd/a8da395293784748a7410a6d4ffd8468/FLAG56a85ce7b [2023-08-03 19:46:13,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe07fd0cd/a8da395293784748a7410a6d4ffd8468 [2023-08-03 19:46:13,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:46:13,282 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:46:13,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:46:13,283 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:46:13,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:46:13,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,287 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a898544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13, skipping insertion in model container [2023-08-03 19:46:13,287 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,307 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:46:13,485 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-simpl-str-subst.wvr_bound2.c[2818,2831] [2023-08-03 19:46:13,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:46:13,503 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:46:13,544 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-simpl-str-subst.wvr_bound2.c[2818,2831] [2023-08-03 19:46:13,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:46:13,559 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:46:13,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13 WrapperNode [2023-08-03 19:46:13,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:46:13,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:46:13,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:46:13,561 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:46:13,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,576 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,598 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 221 [2023-08-03 19:46:13,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:46:13,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:46:13,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:46:13,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:46:13,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,609 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,615 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,621 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:46:13,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:46:13,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:46:13,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:46:13,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (1/1) ... [2023-08-03 19:46:13,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:46:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:13,657 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 19:46:13,683 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 19:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:46:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:46:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:46:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:46:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:46:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:46:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:46:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:46:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:46:13,700 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 19:46:13,817 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:46:13,818 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:46:14,087 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:46:14,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:46:14,096 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:46:14,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:46:14 BoogieIcfgContainer [2023-08-03 19:46:14,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:46:14,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:46:14,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:46:14,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:46:14,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:46:13" (1/3) ... [2023-08-03 19:46:14,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cd8664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:46:14, skipping insertion in model container [2023-08-03 19:46:14,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:46:13" (2/3) ... [2023-08-03 19:46:14,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72cd8664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:46:14, skipping insertion in model container [2023-08-03 19:46:14,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:46:14" (3/3) ... [2023-08-03 19:46:14,106 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-simpl-str-subst.wvr_bound2.c [2023-08-03 19:46:14,113 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:46:14,121 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:46:14,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:46:14,121 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:46:14,213 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:46:14,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,472 INFO L124 PetriNetUnfolderBase]: 118/855 cut-off events. [2023-08-03 19:46:14,472 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:46:14,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 855 events. 118/855 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5166 event pairs, 0 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 448. Up to 16 conditions per place. [2023-08-03 19:46:14,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:46:14,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,521 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 249 transitions, 540 flow [2023-08-03 19:46:14,645 INFO L124 PetriNetUnfolderBase]: 118/855 cut-off events. [2023-08-03 19:46:14,646 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:46:14,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 855 events. 118/855 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5166 event pairs, 0 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 448. Up to 16 conditions per place. [2023-08-03 19:46:14,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 23868 [2023-08-03 19:46:20,718 INFO L134 LiptonReduction]: Checked pairs total: 25911 [2023-08-03 19:46:20,718 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-08-03 19:46:20,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:46:20,746 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;@1487672c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:46:20,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:46:20,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:46:20,752 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2023-08-03 19:46:20,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:46:20,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:20,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:46:20,753 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 19:46:20,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:20,758 INFO L85 PathProgramCache]: Analyzing trace with hash -516273579, now seen corresponding path program 1 times [2023-08-03 19:46:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:20,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015992905] [2023-08-03 19:46:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:20,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:46:20,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:46:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:46:20,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:46:20,957 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:46:20,957 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 19:46:20,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 19:46:20,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:46:20,959 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:46:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:46:20,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:46:20,964 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:46:20,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:46:21,031 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:46:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:22,303 INFO L124 PetriNetUnfolderBase]: 1002/5136 cut-off events. [2023-08-03 19:46:22,303 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:46:22,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5810 conditions, 5136 events. 1002/5136 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 45022 event pairs, 22 based on Foata normal form. 0/4378 useless extension candidates. Maximal degree in co-relation 3042. Up to 192 conditions per place. [2023-08-03 19:46:22,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:22,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:22,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:46:22,429 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:22,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:22,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 363 transitions, 816 flow [2023-08-03 19:46:23,466 INFO L124 PetriNetUnfolderBase]: 1002/5136 cut-off events. [2023-08-03 19:46:23,466 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:46:23,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5810 conditions, 5136 events. 1002/5136 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 45022 event pairs, 22 based on Foata normal form. 0/4378 useless extension candidates. Maximal degree in co-relation 3042. Up to 192 conditions per place. [2023-08-03 19:46:23,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 72828 [2023-08-03 19:46:31,435 INFO L134 LiptonReduction]: Checked pairs total: 89862 [2023-08-03 19:46:31,435 INFO L136 LiptonReduction]: Total number of compositions: 402 [2023-08-03 19:46:31,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:46:31,438 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;@1487672c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:46:31,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 19:46:31,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:46:31,441 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-03 19:46:31,441 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 19:46:31,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:31,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:31,442 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 19:46:31,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1671653651, now seen corresponding path program 1 times [2023-08-03 19:46:31,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:31,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354908888] [2023-08-03 19:46:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:31,521 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 19:46:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354908888] [2023-08-03 19:46:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354908888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:31,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:46:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:46:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515018188] [2023-08-03 19:46:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:31,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:46:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:46:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:46:31,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:46:31,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 19:46:31,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:31,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:46:31,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:36,113 INFO L124 PetriNetUnfolderBase]: 22847/34429 cut-off events. [2023-08-03 19:46:36,113 INFO L125 PetriNetUnfolderBase]: For 6700/6700 co-relation queries the response was YES. [2023-08-03 19:46:36,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71782 conditions, 34429 events. 22847/34429 cut-off events. For 6700/6700 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 221124 event pairs, 15732 based on Foata normal form. 0/31876 useless extension candidates. Maximal degree in co-relation 29036. Up to 32380 conditions per place. [2023-08-03 19:46:36,302 INFO L140 encePairwiseOnDemand]: 760/765 looper letters, 52 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 19:46:36,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 324 flow [2023-08-03 19:46:36,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:46:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:46:36,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-03 19:46:36,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2023-08-03 19:46:36,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-03 19:46:36,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-03 19:46:36,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:36,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-03 19:46:36,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 19:46:36,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:36,341 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:36,342 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 214 flow. Second operand 3 states and 999 transitions. [2023-08-03 19:46:36,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 324 flow [2023-08-03 19:46:36,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:46:36,361 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 222 flow [2023-08-03 19:46:36,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:36,368 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-03 19:46:36,368 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 222 flow [2023-08-03 19:46:36,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 19:46:36,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:36,369 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:46:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:46:36,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 19:46:36,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1750722464, now seen corresponding path program 1 times [2023-08-03 19:46:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:36,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072384131] [2023-08-03 19:46:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:46:36,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:36,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072384131] [2023-08-03 19:46:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072384131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113422016] [2023-08-03 19:46:36,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:36,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:36,492 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 19:46:36,495 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 19:46:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:36,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:46:36,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:36,640 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 19:46:36,640 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:46:36,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113422016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:36,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:46:36,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:46:36,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160342521] [2023-08-03 19:46:36,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:36,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:46:36,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:46:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:46:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:46:36,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 314.6) internal successors, (1573), 5 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states 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 19:46:36,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:36,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:46:36,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:40,458 INFO L124 PetriNetUnfolderBase]: 22843/34421 cut-off events. [2023-08-03 19:46:40,459 INFO L125 PetriNetUnfolderBase]: For 6694/6694 co-relation queries the response was YES. [2023-08-03 19:46:40,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71779 conditions, 34421 events. 22843/34421 cut-off events. For 6694/6694 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 220925 event pairs, 12588 based on Foata normal form. 4/31878 useless extension candidates. Maximal degree in co-relation 43292. Up to 32359 conditions per place. [2023-08-03 19:46:40,629 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 53 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 19:46:40,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 65 transitions, 342 flow [2023-08-03 19:46:40,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:46:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:46:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1623 transitions. [2023-08-03 19:46:40,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243137254901961 [2023-08-03 19:46:40,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1623 transitions. [2023-08-03 19:46:40,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1623 transitions. [2023-08-03 19:46:40,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:40,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1623 transitions. [2023-08-03 19:46:40,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.6) internal successors, (1623), 5 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 19:46:40,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:46:40,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:46:40,645 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 222 flow. Second operand 5 states and 1623 transitions. [2023-08-03 19:46:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 65 transitions, 342 flow [2023-08-03 19:46:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:46:40,653 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 227 flow [2023-08-03 19:46:40,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:40,654 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-03 19:46:40,654 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 227 flow [2023-08-03 19:46:40,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.6) internal successors, (1573), 5 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states 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 19:46:40,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:40,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:40,663 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 19:46:40,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:40,861 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 19:46:40,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 846668790, now seen corresponding path program 1 times [2023-08-03 19:46:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:40,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138272850] [2023-08-03 19:46:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:40,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:40,957 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 19:46:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138272850] [2023-08-03 19:46:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138272850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894959123] [2023-08-03 19:46:40,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:40,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:40,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:40,961 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 19:46:40,964 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 19:46:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:41,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:46:41,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:41,055 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 19:46:41,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:46:41,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894959123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:41,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:46:41,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 19:46:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708842930] [2023-08-03 19:46:41,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:41,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:46:41,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:41,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:46:41,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:46:41,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:46:41,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 19:46:41,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:41,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:46:41,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:44,950 INFO L124 PetriNetUnfolderBase]: 22629/33979 cut-off events. [2023-08-03 19:46:44,950 INFO L125 PetriNetUnfolderBase]: For 5675/5675 co-relation queries the response was YES. [2023-08-03 19:46:45,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70221 conditions, 33979 events. 22629/33979 cut-off events. For 5675/5675 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 216321 event pairs, 15655 based on Foata normal form. 0/31498 useless extension candidates. Maximal degree in co-relation 30518. Up to 31998 conditions per place. [2023-08-03 19:46:45,112 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 55 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-03 19:46:45,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 66 transitions, 353 flow [2023-08-03 19:46:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:46:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:46:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-08-03 19:46:45,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2023-08-03 19:46:45,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-08-03 19:46:45,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-08-03 19:46:45,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:45,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-08-03 19:46:45,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 19:46:45,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:45,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:45,122 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 227 flow. Second operand 3 states and 999 transitions. [2023-08-03 19:46:45,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 66 transitions, 353 flow [2023-08-03 19:46:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 346 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:46:45,129 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 235 flow [2023-08-03 19:46:45,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:45,131 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2023-08-03 19:46:45,131 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 235 flow [2023-08-03 19:46:45,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states 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 19:46:45,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:45,132 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:45,139 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 19:46:45,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:46:45,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 19:46:45,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:45,342 INFO L85 PathProgramCache]: Analyzing trace with hash -282995184, now seen corresponding path program 1 times [2023-08-03 19:46:45,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:45,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360818535] [2023-08-03 19:46:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:45,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:45,399 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 19:46:45,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360818535] [2023-08-03 19:46:45,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360818535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:45,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765787534] [2023-08-03 19:46:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:45,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:45,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:45,402 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 19:46:45,403 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 19:46:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:45,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:46:45,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:45,486 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 19:46:45,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:46:45,504 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 19:46:45,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765787534] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:46:45,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:46:45,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:46:45,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301694157] [2023-08-03 19:46:45,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:46:45,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:46:45,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:45,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:46:45,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:46:45,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:46:45,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 235 flow. Second operand has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:45,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:45,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:46:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:49,280 INFO L124 PetriNetUnfolderBase]: 22037/32965 cut-off events. [2023-08-03 19:46:49,280 INFO L125 PetriNetUnfolderBase]: For 5589/5589 co-relation queries the response was YES. [2023-08-03 19:46:49,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68217 conditions, 32965 events. 22037/32965 cut-off events. For 5589/5589 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 207135 event pairs, 12346 based on Foata normal form. 2/30608 useless extension candidates. Maximal degree in co-relation 26576. Up to 31154 conditions per place. [2023-08-03 19:46:49,413 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 54 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 19:46:49,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 350 flow [2023-08-03 19:46:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:46:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:46:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1309 transitions. [2023-08-03 19:46:49,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2023-08-03 19:46:49,418 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1309 transitions. [2023-08-03 19:46:49,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1309 transitions. [2023-08-03 19:46:49,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:49,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1309 transitions. [2023-08-03 19:46:49,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states 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 19:46:49,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:46:49,428 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:46:49,428 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 235 flow. Second operand 4 states and 1309 transitions. [2023-08-03 19:46:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 350 flow [2023-08-03 19:46:49,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:46:49,435 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 230 flow [2023-08-03 19:46:49,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:49,436 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:46:49,436 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 230 flow [2023-08-03 19:46:49,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:49,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:49,438 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:49,442 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 19:46:49,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:49,642 INFO L420 AbstractCegarLoop]: === Iteration 5 === 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 19:46:49,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:49,643 INFO L85 PathProgramCache]: Analyzing trace with hash -910914041, now seen corresponding path program 1 times [2023-08-03 19:46:49,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:49,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391162081] [2023-08-03 19:46:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:49,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:49,720 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 19:46:49,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391162081] [2023-08-03 19:46:49,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391162081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553236933] [2023-08-03 19:46:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:49,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:49,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:49,722 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 19:46:49,724 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 19:46:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:49,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:46:49,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:49,820 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 19:46:49,820 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:46:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553236933] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:46:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:46:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115980498] [2023-08-03 19:46:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:46:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:46:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:46:49,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:46:49,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:49,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:49,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:46:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:53,478 INFO L124 PetriNetUnfolderBase]: 22005/32909 cut-off events. [2023-08-03 19:46:53,478 INFO L125 PetriNetUnfolderBase]: For 5569/5569 co-relation queries the response was YES. [2023-08-03 19:46:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68096 conditions, 32909 events. 22005/32909 cut-off events. For 5569/5569 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 207389 event pairs, 6266 based on Foata normal form. 16/30566 useless extension candidates. Maximal degree in co-relation 41523. Up to 30985 conditions per place. [2023-08-03 19:46:53,617 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 60 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 19:46:53,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 71 transitions, 376 flow [2023-08-03 19:46:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:46:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:46:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1629 transitions. [2023-08-03 19:46:53,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258823529411765 [2023-08-03 19:46:53,622 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1629 transitions. [2023-08-03 19:46:53,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1629 transitions. [2023-08-03 19:46:53,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:53,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1629 transitions. [2023-08-03 19:46:53,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states 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 19:46:53,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:46:53,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:46:53,634 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 230 flow. Second operand 5 states and 1629 transitions. [2023-08-03 19:46:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 71 transitions, 376 flow [2023-08-03 19:46:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 71 transitions, 362 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:46:53,641 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 231 flow [2023-08-03 19:46:53,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:53,642 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2023-08-03 19:46:53,642 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 231 flow [2023-08-03 19:46:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 315.6) internal successors, (1578), 5 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:53,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:53,643 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 19:46:53,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:46:53,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:53,848 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 19:46:53,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:53,848 INFO L85 PathProgramCache]: Analyzing trace with hash -141886787, now seen corresponding path program 1 times [2023-08-03 19:46:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466004595] [2023-08-03 19:46:53,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:53,915 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 19:46:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466004595] [2023-08-03 19:46:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466004595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178959308] [2023-08-03 19:46:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:53,921 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 19:46:53,924 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 19:46:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:53,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:46:53,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:54,004 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 19:46:54,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:46:54,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178959308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:54,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:46:54,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:46:54,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324735242] [2023-08-03 19:46:54,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:54,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:46:54,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:54,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:46:54,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:46:54,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:46:54,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 19:46:54,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:54,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:46:54,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:46:57,723 INFO L124 PetriNetUnfolderBase]: 21981/33227 cut-off events. [2023-08-03 19:46:57,723 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2023-08-03 19:46:57,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67735 conditions, 33227 events. 21981/33227 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 213332 event pairs, 15391 based on Foata normal form. 0/30892 useless extension candidates. Maximal degree in co-relation 41305. Up to 30826 conditions per place. [2023-08-03 19:46:57,832 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 58 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 19:46:57,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 367 flow [2023-08-03 19:46:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:46:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:46:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1001 transitions. [2023-08-03 19:46:57,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361655773420479 [2023-08-03 19:46:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1001 transitions. [2023-08-03 19:46:57,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1001 transitions. [2023-08-03 19:46:57,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:46:57,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1001 transitions. [2023-08-03 19:46:57,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states 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 19:46:57,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:57,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:46:57,843 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 231 flow. Second operand 3 states and 1001 transitions. [2023-08-03 19:46:57,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 367 flow [2023-08-03 19:46:57,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 360 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:46:57,848 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 239 flow [2023-08-03 19:46:57,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:46:57,848 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2023-08-03 19:46:57,849 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 239 flow [2023-08-03 19:46:57,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states 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 19:46:57,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:57,849 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 19:46:57,859 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 19:46:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:58,060 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 19:46:58,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:58,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1841347970, now seen corresponding path program 1 times [2023-08-03 19:46:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013724169] [2023-08-03 19:46:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:58,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:58,102 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 19:46:58,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013724169] [2023-08-03 19:46:58,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013724169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:46:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189967868] [2023-08-03 19:46:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:46:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:46:58,105 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 19:46:58,131 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 19:46:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:58,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:46:58,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:46:58,208 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 19:46:58,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:46:58,225 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 19:46:58,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189967868] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:46:58,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:46:58,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:46:58,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681343721] [2023-08-03 19:46:58,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:46:58,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:46:58,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:58,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:46:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:46:58,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:46:58,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 239 flow. Second operand has 5 states, 5 states have (on average 316.6) internal successors, (1583), 5 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 19:46:58,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:58,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:46:58,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:01,736 INFO L124 PetriNetUnfolderBase]: 21597/32643 cut-off events. [2023-08-03 19:47:01,737 INFO L125 PetriNetUnfolderBase]: For 3462/3462 co-relation queries the response was YES. [2023-08-03 19:47:01,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66708 conditions, 32643 events. 21597/32643 cut-off events. For 3462/3462 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 208836 event pairs, 12398 based on Foata normal form. 8/30460 useless extension candidates. Maximal degree in co-relation 40871. Up to 30442 conditions per place. [2023-08-03 19:47:01,894 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 59 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-03 19:47:01,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 372 flow [2023-08-03 19:47:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:47:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:47:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1313 transitions. [2023-08-03 19:47:01,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290849673202614 [2023-08-03 19:47:01,898 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1313 transitions. [2023-08-03 19:47:01,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1313 transitions. [2023-08-03 19:47:01,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:01,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1313 transitions. [2023-08-03 19:47:01,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 328.25) internal successors, (1313), 4 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states 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 19:47:01,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:01,906 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:01,906 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 239 flow. Second operand 4 states and 1313 transitions. [2023-08-03 19:47:01,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 372 flow [2023-08-03 19:47:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:01,913 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 234 flow [2023-08-03 19:47:01,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:01,914 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:47:01,914 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 234 flow [2023-08-03 19:47:01,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.6) internal successors, (1583), 5 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 19:47:01,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:01,915 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 19:47:01,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 19:47:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:02,119 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 19:47:02,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 254312827, now seen corresponding path program 1 times [2023-08-03 19:47:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:02,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530450751] [2023-08-03 19:47:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:02,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:02,209 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 19:47:02,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:02,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530450751] [2023-08-03 19:47:02,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530450751] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:02,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270050948] [2023-08-03 19:47:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:02,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:02,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:02,212 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 19:47:02,214 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 19:47:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:02,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:47:02,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:02,336 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 19:47:02,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:02,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270050948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:02,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:02,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:47:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645060499] [2023-08-03 19:47:02,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:02,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:47:02,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:47:02,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 316.6) internal successors, (1583), 5 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 19:47:02,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:02,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:47:02,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:05,807 INFO L124 PetriNetUnfolderBase]: 21405/32355 cut-off events. [2023-08-03 19:47:05,807 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2023-08-03 19:47:05,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66096 conditions, 32355 events. 21405/32355 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 206819 event pairs, 686 based on Foata normal form. 64/30228 useless extension candidates. Maximal degree in co-relation 40597. Up to 29473 conditions per place. [2023-08-03 19:47:05,963 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 67 selfloop transitions, 4 changer transitions 0/77 dead transitions. [2023-08-03 19:47:05,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 406 flow [2023-08-03 19:47:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:47:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:47:05,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1635 transitions. [2023-08-03 19:47:05,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42745098039215684 [2023-08-03 19:47:05,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1635 transitions. [2023-08-03 19:47:05,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1635 transitions. [2023-08-03 19:47:05,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:05,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1635 transitions. [2023-08-03 19:47:05,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 327.0) internal successors, (1635), 5 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states 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 19:47:05,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:47:05,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 765.0) internal successors, (4590), 6 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states 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 19:47:05,977 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 234 flow. Second operand 5 states and 1635 transitions. [2023-08-03 19:47:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 406 flow [2023-08-03 19:47:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 77 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 19:47:05,984 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 235 flow [2023-08-03 19:47:05,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:05,984 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-03 19:47:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 235 flow [2023-08-03 19:47:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 316.6) internal successors, (1583), 5 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states 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 19:47:05,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:05,986 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 19:47:05,993 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 19:47:06,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:06,193 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 19:47:06,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 428836584, now seen corresponding path program 1 times [2023-08-03 19:47:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:06,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774660652] [2023-08-03 19:47:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:06,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:06,252 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 19:47:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774660652] [2023-08-03 19:47:06,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774660652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:06,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666163] [2023-08-03 19:47:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:06,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:06,254 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 19:47:06,257 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 19:47:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:06,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:47:06,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:06,356 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 19:47:06,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:06,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666163] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:06,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:06,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:47:06,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109008996] [2023-08-03 19:47:06,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:06,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:06,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:06,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:47:06,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 19:47:06,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:06,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:47:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:09,326 INFO L124 PetriNetUnfolderBase]: 19085/29043 cut-off events. [2023-08-03 19:47:09,326 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2023-08-03 19:47:09,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59196 conditions, 29043 events. 19085/29043 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 185112 event pairs, 14685 based on Foata normal form. 0/27044 useless extension candidates. Maximal degree in co-relation 37073. Up to 25642 conditions per place. [2023-08-03 19:47:09,514 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 66 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:47:09,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 75 transitions, 413 flow [2023-08-03 19:47:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-03 19:47:09,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392156862745098 [2023-08-03 19:47:09,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-03 19:47:09,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-03 19:47:09,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:09,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-03 19:47:09,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:47:09,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:09,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:09,522 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 235 flow. Second operand 3 states and 1008 transitions. [2023-08-03 19:47:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 75 transitions, 413 flow [2023-08-03 19:47:09,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 406 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:47:09,529 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 243 flow [2023-08-03 19:47:09,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:09,530 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 11 predicate places. [2023-08-03 19:47:09,530 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 243 flow [2023-08-03 19:47:09,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states 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 19:47:09,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:09,531 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 19:47:09,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 19:47:09,740 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,SelfDestructingSolverStorable9 [2023-08-03 19:47:09,740 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 19:47:09,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:09,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1532134887, now seen corresponding path program 1 times [2023-08-03 19:47:09,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:09,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759526388] [2023-08-03 19:47:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:09,799 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 19:47:09,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:09,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759526388] [2023-08-03 19:47:09,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759526388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:09,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440485672] [2023-08-03 19:47:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:09,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:09,801 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 19:47:09,804 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 19:47:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:09,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:47:09,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:09,906 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 19:47:09,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:09,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440485672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:09,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:47:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904452048] [2023-08-03 19:47:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:09,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:09,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:47:09,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 19:47:09,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:09,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:47:09,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:12,489 INFO L124 PetriNetUnfolderBase]: 17916/27846 cut-off events. [2023-08-03 19:47:12,489 INFO L125 PetriNetUnfolderBase]: For 4055/4055 co-relation queries the response was YES. [2023-08-03 19:47:12,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58629 conditions, 27846 events. 17916/27846 cut-off events. For 4055/4055 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 183539 event pairs, 12022 based on Foata normal form. 0/26896 useless extension candidates. Maximal degree in co-relation 37984. Up to 20186 conditions per place. [2023-08-03 19:47:12,702 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 68 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-03 19:47:12,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 423 flow [2023-08-03 19:47:12,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:12,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-03 19:47:12,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392156862745098 [2023-08-03 19:47:12,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-03 19:47:12,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-03 19:47:12,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-03 19:47:12,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:47:12,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:12,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:12,710 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 243 flow. Second operand 3 states and 1008 transitions. [2023-08-03 19:47:12,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 423 flow [2023-08-03 19:47:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 420 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:12,720 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 252 flow [2023-08-03 19:47:12,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:12,720 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2023-08-03 19:47:12,720 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 252 flow [2023-08-03 19:47:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 19:47:12,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:12,721 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 19:47:12,728 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 19:47:12,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:12,926 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 19:47:12,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:12,927 INFO L85 PathProgramCache]: Analyzing trace with hash 809183469, now seen corresponding path program 1 times [2023-08-03 19:47:12,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:12,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051547969] [2023-08-03 19:47:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:12,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:12,988 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 19:47:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:12,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051547969] [2023-08-03 19:47:12,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051547969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:12,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922778500] [2023-08-03 19:47:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:12,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:12,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:12,991 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 19:47:12,995 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 19:47:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:13,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:47:13,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:13,108 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 19:47:13,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:47:13,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922778500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:13,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:47:13,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:47:13,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133838218] [2023-08-03 19:47:13,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:13,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:13,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:13,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:13,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 765 [2023-08-03 19:47:13,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 19:47:13,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:13,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 765 [2023-08-03 19:47:13,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:15,733 INFO L124 PetriNetUnfolderBase]: 17227/27049 cut-off events. [2023-08-03 19:47:15,734 INFO L125 PetriNetUnfolderBase]: For 5291/5291 co-relation queries the response was YES. [2023-08-03 19:47:15,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59161 conditions, 27049 events. 17227/27049 cut-off events. For 5291/5291 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 178510 event pairs, 12933 based on Foata normal form. 0/26812 useless extension candidates. Maximal degree in co-relation 38993. Up to 21620 conditions per place. [2023-08-03 19:47:15,953 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 69 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-03 19:47:15,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 77 transitions, 434 flow [2023-08-03 19:47:15,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:15,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2023-08-03 19:47:15,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392156862745098 [2023-08-03 19:47:15,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2023-08-03 19:47:15,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2023-08-03 19:47:15,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:15,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2023-08-03 19:47:15,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states 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 19:47:15,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:15,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 765.0) internal successors, (3060), 4 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states 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 19:47:15,962 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 252 flow. Second operand 3 states and 1008 transitions. [2023-08-03 19:47:15,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 77 transitions, 434 flow [2023-08-03 19:47:16,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:16,162 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 262 flow [2023-08-03 19:47:16,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:16,163 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 15 predicate places. [2023-08-03 19:47:16,163 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 262 flow [2023-08-03 19:47:16,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.3333333333333) internal successors, (970), 3 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 19:47:16,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:16,164 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 19:47:16,169 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 19:47:16,369 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,SelfDestructingSolverStorable11 [2023-08-03 19:47:16,369 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 19:47:16,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -152794213, now seen corresponding path program 1 times [2023-08-03 19:47:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:16,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962795440] [2023-08-03 19:47:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:16,448 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 19:47:16,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962795440] [2023-08-03 19:47:16,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962795440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:16,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701857893] [2023-08-03 19:47:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:16,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:16,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:16,450 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 19:47:16,453 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 19:47:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:16,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:47:16,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:16,590 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 19:47:16,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:16,606 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 19:47:16,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701857893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:16,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:16,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:47:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346032913] [2023-08-03 19:47:16,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:16,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:16,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:16,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:16,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:16,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:47:16,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 320.2) internal successors, (1601), 5 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states 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 19:47:16,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:16,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:47:16,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:19,229 INFO L124 PetriNetUnfolderBase]: 16827/26425 cut-off events. [2023-08-03 19:47:19,230 INFO L125 PetriNetUnfolderBase]: For 5005/5005 co-relation queries the response was YES. [2023-08-03 19:47:19,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58542 conditions, 26425 events. 16827/26425 cut-off events. For 5005/5005 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 172830 event pairs, 9899 based on Foata normal form. 32/26453 useless extension candidates. Maximal degree in co-relation 42454. Up to 24046 conditions per place. [2023-08-03 19:47:19,402 INFO L140 encePairwiseOnDemand]: 762/765 looper letters, 66 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-03 19:47:19,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 418 flow [2023-08-03 19:47:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:47:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:47:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1317 transitions. [2023-08-03 19:47:19,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303921568627451 [2023-08-03 19:47:19,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1317 transitions. [2023-08-03 19:47:19,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1317 transitions. [2023-08-03 19:47:19,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:19,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1317 transitions. [2023-08-03 19:47:19,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states 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 19:47:19,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:19,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:19,411 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 262 flow. Second operand 4 states and 1317 transitions. [2023-08-03 19:47:19,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 418 flow [2023-08-03 19:47:19,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 75 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:19,644 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 258 flow [2023-08-03 19:47:19,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:19,645 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2023-08-03 19:47:19,645 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 258 flow [2023-08-03 19:47:19,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 320.2) internal successors, (1601), 5 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states 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 19:47:19,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:19,646 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 19:47:19,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-03 19:47:19,854 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,SelfDestructingSolverStorable12 [2023-08-03 19:47:19,854 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 19:47:19,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:19,854 INFO L85 PathProgramCache]: Analyzing trace with hash 906621258, now seen corresponding path program 1 times [2023-08-03 19:47:19,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012314336] [2023-08-03 19:47:19,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:19,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:19,945 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 19:47:19,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:19,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012314336] [2023-08-03 19:47:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012314336] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:19,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060539996] [2023-08-03 19:47:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:19,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:19,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:19,949 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 19:47:19,973 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 19:47:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:20,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:47:20,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:20,077 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 19:47:20,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:20,090 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 19:47:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060539996] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:20,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:20,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:47:20,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469373048] [2023-08-03 19:47:20,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:20,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:20,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:20,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:20,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:20,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:47:20,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 258 flow. Second operand has 5 states, 5 states have (on average 320.4) internal successors, (1602), 5 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 19:47:20,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:20,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:47:20,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:21,698 INFO L124 PetriNetUnfolderBase]: 10447/16661 cut-off events. [2023-08-03 19:47:21,698 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2023-08-03 19:47:21,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37029 conditions, 16661 events. 10447/16661 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 101028 event pairs, 5506 based on Foata normal form. 192/16849 useless extension candidates. Maximal degree in co-relation 31654. Up to 9703 conditions per place. [2023-08-03 19:47:21,791 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 73 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 19:47:21,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 464 flow [2023-08-03 19:47:21,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:47:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:47:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1325 transitions. [2023-08-03 19:47:21,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43300653594771243 [2023-08-03 19:47:21,794 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1325 transitions. [2023-08-03 19:47:21,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1325 transitions. [2023-08-03 19:47:21,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:21,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1325 transitions. [2023-08-03 19:47:21,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 19:47:21,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:21,798 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:21,799 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 258 flow. Second operand 4 states and 1325 transitions. [2023-08-03 19:47:21,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 464 flow [2023-08-03 19:47:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 458 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:47:21,893 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 272 flow [2023-08-03 19:47:21,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:21,894 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 19 predicate places. [2023-08-03 19:47:21,894 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 272 flow [2023-08-03 19:47:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 320.4) internal successors, (1602), 5 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states 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 19:47:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:21,895 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 19:47:21,905 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 19:47:22,103 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,SelfDestructingSolverStorable13 [2023-08-03 19:47:22,103 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 19:47:22,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1906038087, now seen corresponding path program 1 times [2023-08-03 19:47:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890696638] [2023-08-03 19:47:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:22,210 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 19:47:22,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890696638] [2023-08-03 19:47:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890696638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678089800] [2023-08-03 19:47:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:22,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:22,212 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 19:47:22,215 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 19:47:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:22,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:47:22,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:22,339 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 19:47:22,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:22,356 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 19:47:22,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678089800] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:22,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:22,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:47:22,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19302893] [2023-08-03 19:47:22,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:22,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:22,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:22,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:22,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:22,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:47:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 320.8) internal successors, (1604), 5 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states 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 19:47:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:47:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:23,826 INFO L124 PetriNetUnfolderBase]: 9427/14950 cut-off events. [2023-08-03 19:47:23,826 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-08-03 19:47:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35907 conditions, 14950 events. 9427/14950 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 88203 event pairs, 5954 based on Foata normal form. 233/15179 useless extension candidates. Maximal degree in co-relation 34761. Up to 8770 conditions per place. [2023-08-03 19:47:23,908 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 74 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-03 19:47:23,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 84 transitions, 480 flow [2023-08-03 19:47:23,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:47:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:47:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1325 transitions. [2023-08-03 19:47:23,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43300653594771243 [2023-08-03 19:47:23,910 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1325 transitions. [2023-08-03 19:47:23,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1325 transitions. [2023-08-03 19:47:23,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:23,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1325 transitions. [2023-08-03 19:47:23,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 19:47:23,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:23,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:23,915 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 272 flow. Second operand 4 states and 1325 transitions. [2023-08-03 19:47:23,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 84 transitions, 480 flow [2023-08-03 19:47:23,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 84 transitions, 476 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:23,977 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 288 flow [2023-08-03 19:47:23,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:23,977 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-03 19:47:23,977 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 288 flow [2023-08-03 19:47:23,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 320.8) internal successors, (1604), 5 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states 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 19:47:23,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:23,978 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 19:47:23,983 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 19:47:24,183 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,SelfDestructingSolverStorable14 [2023-08-03 19:47:24,183 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 19:47:24,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1170912935, now seen corresponding path program 1 times [2023-08-03 19:47:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118321323] [2023-08-03 19:47:24,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:24,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:24,280 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 19:47:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118321323] [2023-08-03 19:47:24,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118321323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:24,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278220712] [2023-08-03 19:47:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:24,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:24,282 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 19:47:24,285 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 19:47:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:24,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:47:24,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:24,419 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 19:47:24,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:24,432 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 19:47:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278220712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:24,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:24,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:47:24,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542740051] [2023-08-03 19:47:24,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:24,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:47:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:47:24,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:47:24,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 765 [2023-08-03 19:47:24,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 321.2) internal successors, (1606), 5 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 19:47:24,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:24,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 765 [2023-08-03 19:47:24,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:26,028 INFO L124 PetriNetUnfolderBase]: 9409/14897 cut-off events. [2023-08-03 19:47:26,028 INFO L125 PetriNetUnfolderBase]: For 7481/7481 co-relation queries the response was YES. [2023-08-03 19:47:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37504 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 87855 event pairs, 8414 based on Foata normal form. 13/14906 useless extension candidates. Maximal degree in co-relation 36401. Up to 13455 conditions per place. [2023-08-03 19:47:26,105 INFO L140 encePairwiseOnDemand]: 761/765 looper letters, 73 selfloop transitions, 3 changer transitions 3/85 dead transitions. [2023-08-03 19:47:26,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 498 flow [2023-08-03 19:47:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:47:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:47:26,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1325 transitions. [2023-08-03 19:47:26,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43300653594771243 [2023-08-03 19:47:26,108 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1325 transitions. [2023-08-03 19:47:26,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1325 transitions. [2023-08-03 19:47:26,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:26,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1325 transitions. [2023-08-03 19:47:26,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.25) internal successors, (1325), 4 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states 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 19:47:26,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:26,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 765.0) internal successors, (3825), 5 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states 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 19:47:26,112 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 288 flow. Second operand 4 states and 1325 transitions. [2023-08-03 19:47:26,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 498 flow [2023-08-03 19:47:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 494 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:26,251 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 286 flow [2023-08-03 19:47:26,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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 19:47:26,251 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 27 predicate places. [2023-08-03 19:47:26,251 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 286 flow [2023-08-03 19:47:26,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.2) internal successors, (1606), 5 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states 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 19:47:26,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:26,252 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 19:47:26,261 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 19:47:26,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:26,458 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 19:47:26,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash -25076599, now seen corresponding path program 1 times [2023-08-03 19:47:26,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:26,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95082235] [2023-08-03 19:47:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:26,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:28,925 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 19:47:28,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95082235] [2023-08-03 19:47:28,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95082235] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852320253] [2023-08-03 19:47:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:28,928 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 19:47:28,931 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 19:47:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:29,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 19:47:29,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:32,528 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 19:47:32,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:34,949 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 19:47:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852320253] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:34,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:34,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-03 19:47:34,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587832552] [2023-08-03 19:47:34,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:34,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:47:34,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:47:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:47:35,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 765 [2023-08-03 19:47:35,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 286 flow. Second operand has 14 states, 14 states have (on average 281.2142857142857) internal successors, (3937), 14 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states 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 19:47:35,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:35,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 765 [2023-08-03 19:47:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:40,239 INFO L124 PetriNetUnfolderBase]: 15094/24057 cut-off events. [2023-08-03 19:47:40,240 INFO L125 PetriNetUnfolderBase]: For 16668/16668 co-relation queries the response was YES. [2023-08-03 19:47:40,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60208 conditions, 24057 events. 15094/24057 cut-off events. For 16668/16668 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 163244 event pairs, 1450 based on Foata normal form. 2/23913 useless extension candidates. Maximal degree in co-relation 60121. Up to 6571 conditions per place. [2023-08-03 19:47:40,348 INFO L140 encePairwiseOnDemand]: 755/765 looper letters, 162 selfloop transitions, 13 changer transitions 95/276 dead transitions. [2023-08-03 19:47:40,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 276 transitions, 1839 flow [2023-08-03 19:47:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 19:47:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 19:47:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3543 transitions. [2023-08-03 19:47:40,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38594771241830067 [2023-08-03 19:47:40,354 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3543 transitions. [2023-08-03 19:47:40,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3543 transitions. [2023-08-03 19:47:40,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:40,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3543 transitions. [2023-08-03 19:47:40,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 295.25) internal successors, (3543), 12 states have internal predecessors, (3543), 0 states have call successors, (0), 0 states 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 19:47:40,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 765.0) internal successors, (9945), 13 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states 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 19:47:40,368 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 765.0) internal successors, (9945), 13 states have internal predecessors, (9945), 0 states have call successors, (0), 0 states 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 19:47:40,368 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 286 flow. Second operand 12 states and 3543 transitions. [2023-08-03 19:47:40,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 276 transitions, 1839 flow [2023-08-03 19:47:40,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 276 transitions, 1789 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 19:47:40,669 INFO L231 Difference]: Finished difference. Result has 101 places, 75 transitions, 404 flow [2023-08-03 19:47:40,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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=12, PETRI_FLOW=404, PETRI_PLACES=101, PETRI_TRANSITIONS=75} [2023-08-03 19:47:40,669 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2023-08-03 19:47:40,670 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 404 flow [2023-08-03 19:47:40,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 281.2142857142857) internal successors, (3937), 14 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states 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 19:47:40,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:40,671 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 19:47:40,676 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 19:47:40,876 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,SelfDestructingSolverStorable16 [2023-08-03 19:47:40,876 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 19:47:40,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1429353365, now seen corresponding path program 2 times [2023-08-03 19:47:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447448529] [2023-08-03 19:47:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:47:42,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447448529] [2023-08-03 19:47:42,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447448529] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:42,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928780540] [2023-08-03 19:47:42,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:47:42,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:42,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:42,754 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 19:47:42,756 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 19:47:42,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:47:42,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:47:42,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 19:47:42,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:47:45,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-08-03 19:47:46,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928780540] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:46,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:46,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-08-03 19:47:46,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601508393] [2023-08-03 19:47:46,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:46,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 19:47:46,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 19:47:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-03 19:47:47,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 765 [2023-08-03 19:47:47,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 75 transitions, 404 flow. Second operand has 17 states, 17 states have (on average 280.88235294117646) internal successors, (4775), 17 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states 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 19:47:47,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:47,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 765 [2023-08-03 19:47:47,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:51,921 INFO L124 PetriNetUnfolderBase]: 15274/25596 cut-off events. [2023-08-03 19:47:51,921 INFO L125 PetriNetUnfolderBase]: For 77390/77390 co-relation queries the response was YES. [2023-08-03 19:47:52,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97950 conditions, 25596 events. 15274/25596 cut-off events. For 77390/77390 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 189462 event pairs, 2396 based on Foata normal form. 1/25483 useless extension candidates. Maximal degree in co-relation 97907. Up to 10926 conditions per place. [2023-08-03 19:47:52,160 INFO L140 encePairwiseOnDemand]: 755/765 looper letters, 138 selfloop transitions, 9 changer transitions 75/228 dead transitions. [2023-08-03 19:47:52,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 228 transitions, 1694 flow [2023-08-03 19:47:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 19:47:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 19:47:52,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2672 transitions. [2023-08-03 19:47:52,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38809005083514886 [2023-08-03 19:47:52,166 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2672 transitions. [2023-08-03 19:47:52,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2672 transitions. [2023-08-03 19:47:52,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:52,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2672 transitions. [2023-08-03 19:47:52,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 296.8888888888889) internal successors, (2672), 9 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states 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 19:47:52,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 765.0) internal successors, (7650), 10 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states 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 19:47:52,176 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 765.0) internal successors, (7650), 10 states have internal predecessors, (7650), 0 states have call successors, (0), 0 states 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 19:47:52,176 INFO L175 Difference]: Start difference. First operand has 101 places, 75 transitions, 404 flow. Second operand 9 states and 2672 transitions. [2023-08-03 19:47:52,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 228 transitions, 1694 flow [2023-08-03 19:47:52,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 228 transitions, 1674 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-03 19:47:52,719 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 430 flow [2023-08-03 19:47:52,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, 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=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=430, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-08-03 19:47:52,720 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 48 predicate places. [2023-08-03 19:47:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 430 flow [2023-08-03 19:47:52,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 280.88235294117646) internal successors, (4775), 17 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states 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 19:47:52,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:52,720 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 19:47:52,725 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 19:47:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-03 19:47:52,921 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 19:47:52,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:52,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1900908575, now seen corresponding path program 1 times [2023-08-03 19:47:52,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:52,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716296858] [2023-08-03 19:47:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:47:54,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716296858] [2023-08-03 19:47:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716296858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:47:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974007467] [2023-08-03 19:47:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:54,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:47:54,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:47:54,942 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 19:47:54,968 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 19:47:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:55,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 19:47:55,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:47:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:47:57,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:47:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-03 19:47:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974007467] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:47:59,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:47:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 29 [2023-08-03 19:47:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012852386] [2023-08-03 19:47:59,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:47:59,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-03 19:47:59,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:59,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-03 19:47:59,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=741, Unknown=0, NotChecked=0, Total=812 [2023-08-03 19:48:03,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 765 [2023-08-03 19:48:03,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 430 flow. Second operand has 29 states, 29 states have (on average 258.51724137931035) internal successors, (7497), 29 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states 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 19:48:03,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:03,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 765 [2023-08-03 19:48:03,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:20,869 INFO L124 PetriNetUnfolderBase]: 25891/44093 cut-off events. [2023-08-03 19:48:20,870 INFO L125 PetriNetUnfolderBase]: For 208532/208532 co-relation queries the response was YES. [2023-08-03 19:48:21,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187536 conditions, 44093 events. 25891/44093 cut-off events. For 208532/208532 co-relation queries the response was YES. Maximal size of possible extension queue 1281. Compared 360001 event pairs, 3388 based on Foata normal form. 159/44250 useless extension candidates. Maximal degree in co-relation 187485. Up to 16511 conditions per place. [2023-08-03 19:48:21,174 INFO L140 encePairwiseOnDemand]: 734/765 looper letters, 383 selfloop transitions, 196 changer transitions 37/618 dead transitions. [2023-08-03 19:48:21,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 618 transitions, 5540 flow [2023-08-03 19:48:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-03 19:48:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-03 19:48:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 13958 transitions. [2023-08-03 19:48:21,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3442594647922062 [2023-08-03 19:48:21,188 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 13958 transitions. [2023-08-03 19:48:21,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 13958 transitions. [2023-08-03 19:48:21,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:21,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 13958 transitions. [2023-08-03 19:48:21,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 263.35849056603774) internal successors, (13958), 53 states have internal predecessors, (13958), 0 states have call successors, (0), 0 states 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 19:48:21,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 765.0) internal successors, (41310), 54 states have internal predecessors, (41310), 0 states have call successors, (0), 0 states 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 19:48:21,234 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 765.0) internal successors, (41310), 54 states have internal predecessors, (41310), 0 states have call successors, (0), 0 states 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 19:48:21,234 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 430 flow. Second operand 53 states and 13958 transitions. [2023-08-03 19:48:21,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 618 transitions, 5540 flow [2023-08-03 19:48:22,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 618 transitions, 5038 flow, removed 210 selfloop flow, removed 6 redundant places. [2023-08-03 19:48:22,262 INFO L231 Difference]: Finished difference. Result has 181 places, 273 transitions, 2847 flow [2023-08-03 19:48:22,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2847, PETRI_PLACES=181, PETRI_TRANSITIONS=273} [2023-08-03 19:48:22,263 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 125 predicate places. [2023-08-03 19:48:22,263 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 273 transitions, 2847 flow [2023-08-03 19:48:22,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 258.51724137931035) internal successors, (7497), 29 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states 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 19:48:22,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:22,264 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 19:48:22,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-03 19:48:22,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:22,465 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 19:48:22,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1653969119, now seen corresponding path program 2 times [2023-08-03 19:48:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826407546] [2023-08-03 19:48:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826407546] [2023-08-03 19:48:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826407546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321700615] [2023-08-03 19:48:23,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:48:23,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:23,220 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 19:48:23,225 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 19:48:23,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:48:23,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:48:23,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 19:48:23,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:25,639 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 19:48:25,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:27,448 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 19:48:27,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321700615] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:27,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:27,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 21 [2023-08-03 19:48:27,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690399826] [2023-08-03 19:48:27,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:27,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 19:48:27,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:27,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 19:48:27,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-03 19:48:29,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 765 [2023-08-03 19:48:29,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 273 transitions, 2847 flow. Second operand has 21 states, 21 states have (on average 271.4761904761905) internal successors, (5701), 21 states have internal predecessors, (5701), 0 states have call successors, (0), 0 states 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 19:48:29,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:29,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 765 [2023-08-03 19:48:29,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:41,915 INFO L124 PetriNetUnfolderBase]: 25705/45859 cut-off events. [2023-08-03 19:48:41,915 INFO L125 PetriNetUnfolderBase]: For 814362/815136 co-relation queries the response was YES. [2023-08-03 19:48:42,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323595 conditions, 45859 events. 25705/45859 cut-off events. For 814362/815136 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 401319 event pairs, 3782 based on Foata normal form. 837/46607 useless extension candidates. Maximal degree in co-relation 323506. Up to 18594 conditions per place. [2023-08-03 19:48:42,434 INFO L140 encePairwiseOnDemand]: 743/765 looper letters, 164 selfloop transitions, 71 changer transitions 310/553 dead transitions. [2023-08-03 19:48:42,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 553 transitions, 6948 flow [2023-08-03 19:48:42,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-03 19:48:42,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-03 19:48:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 7719 transitions. [2023-08-03 19:48:42,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3603641456582633 [2023-08-03 19:48:42,442 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 7719 transitions. [2023-08-03 19:48:42,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 7719 transitions. [2023-08-03 19:48:42,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:42,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 7719 transitions. [2023-08-03 19:48:42,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 275.67857142857144) internal successors, (7719), 28 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states 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 19:48:42,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 765.0) internal successors, (22185), 29 states have internal predecessors, (22185), 0 states have call successors, (0), 0 states 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 19:48:42,465 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 765.0) internal successors, (22185), 29 states have internal predecessors, (22185), 0 states have call successors, (0), 0 states 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 19:48:42,465 INFO L175 Difference]: Start difference. First operand has 181 places, 273 transitions, 2847 flow. Second operand 28 states and 7719 transitions. [2023-08-03 19:48:42,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 553 transitions, 6948 flow [2023-08-03 19:48:47,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 553 transitions, 6425 flow, removed 215 selfloop flow, removed 15 redundant places. [2023-08-03 19:48:47,526 INFO L231 Difference]: Finished difference. Result has 203 places, 145 transitions, 1693 flow [2023-08-03 19:48:47,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1693, PETRI_PLACES=203, PETRI_TRANSITIONS=145} [2023-08-03 19:48:47,526 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 147 predicate places. [2023-08-03 19:48:47,526 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 145 transitions, 1693 flow [2023-08-03 19:48:47,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 271.4761904761905) internal successors, (5701), 21 states have internal predecessors, (5701), 0 states have call successors, (0), 0 states 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 19:48:47,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:47,527 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 19:48:47,531 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 19:48:47,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:47,728 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 19:48:47,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash -204232025, now seen corresponding path program 1 times [2023-08-03 19:48:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:47,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984776082] [2023-08-03 19:48:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:49,260 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 19:48:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984776082] [2023-08-03 19:48:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984776082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857606880] [2023-08-03 19:48:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:49,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:49,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:49,262 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 19:48:49,264 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 19:48:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:49,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 19:48:49,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:51,212 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 19:48:51,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:52,365 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 19:48:52,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857606880] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:52,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:52,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2023-08-03 19:48:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672402418] [2023-08-03 19:48:52,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:52,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-03 19:48:52,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:52,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-03 19:48:52,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-08-03 19:48:53,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 765 [2023-08-03 19:48:53,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 145 transitions, 1693 flow. Second operand has 14 states, 14 states have (on average 284.2857142857143) internal successors, (3980), 14 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states 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 19:48:53,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:53,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 765 [2023-08-03 19:48:53,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:57,978 INFO L124 PetriNetUnfolderBase]: 10657/20928 cut-off events. [2023-08-03 19:48:57,979 INFO L125 PetriNetUnfolderBase]: For 527359/527989 co-relation queries the response was YES. [2023-08-03 19:48:58,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170871 conditions, 20928 events. 10657/20928 cut-off events. For 527359/527989 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 184881 event pairs, 1737 based on Foata normal form. 186/21055 useless extension candidates. Maximal degree in co-relation 170790. Up to 9103 conditions per place. [2023-08-03 19:48:58,127 INFO L140 encePairwiseOnDemand]: 755/765 looper letters, 143 selfloop transitions, 43 changer transitions 11/216 dead transitions. [2023-08-03 19:48:58,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 216 transitions, 2697 flow [2023-08-03 19:48:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:48:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:48:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2350 transitions. [2023-08-03 19:48:58,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839869281045752 [2023-08-03 19:48:58,130 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2350 transitions. [2023-08-03 19:48:58,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2350 transitions. [2023-08-03 19:48:58,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:58,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2350 transitions. [2023-08-03 19:48:58,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 293.75) internal successors, (2350), 8 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states 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 19:48:58,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 765.0) internal successors, (6885), 9 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states 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 19:48:58,136 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 765.0) internal successors, (6885), 9 states have internal predecessors, (6885), 0 states have call successors, (0), 0 states 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 19:48:58,136 INFO L175 Difference]: Start difference. First operand has 203 places, 145 transitions, 1693 flow. Second operand 8 states and 2350 transitions. [2023-08-03 19:48:58,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 216 transitions, 2697 flow [2023-08-03 19:49:00,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 216 transitions, 2241 flow, removed 199 selfloop flow, removed 34 redundant places. [2023-08-03 19:49:00,465 INFO L231 Difference]: Finished difference. Result has 149 places, 147 transitions, 1493 flow [2023-08-03 19:49:00,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=149, PETRI_TRANSITIONS=147} [2023-08-03 19:49:00,465 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 93 predicate places. [2023-08-03 19:49:00,465 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 147 transitions, 1493 flow [2023-08-03 19:49:00,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 284.2857142857143) internal successors, (3980), 14 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states 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 19:49:00,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:00,466 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 19:49:00,472 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 19:49:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:00,667 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 19:49:00,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash 55233647, now seen corresponding path program 1 times [2023-08-03 19:49:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463772877] [2023-08-03 19:49:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 19:49:01,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463772877] [2023-08-03 19:49:01,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463772877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:01,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47974172] [2023-08-03 19:49:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:01,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:01,504 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:49:01,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-03 19:49:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:01,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-03 19:49:01,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:03,164 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 19:49:03,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:04,458 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 19:49:04,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47974172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:04,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:04,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 22 [2023-08-03 19:49:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191166095] [2023-08-03 19:49:04,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-03 19:49:04,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-03 19:49:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2023-08-03 19:49:07,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 765 [2023-08-03 19:49:07,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 147 transitions, 1493 flow. Second operand has 22 states, 22 states have (on average 270.3181818181818) internal successors, (5947), 22 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states 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 19:49:07,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:07,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 765 [2023-08-03 19:49:07,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:13,967 INFO L124 PetriNetUnfolderBase]: 9698/19796 cut-off events. [2023-08-03 19:49:13,967 INFO L125 PetriNetUnfolderBase]: For 290323/290333 co-relation queries the response was YES. [2023-08-03 19:49:14,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135591 conditions, 19796 events. 9698/19796 cut-off events. For 290323/290333 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 178258 event pairs, 1285 based on Foata normal form. 72/19868 useless extension candidates. Maximal degree in co-relation 135542. Up to 8190 conditions per place. [2023-08-03 19:49:14,074 INFO L140 encePairwiseOnDemand]: 744/765 looper letters, 0 selfloop transitions, 0 changer transitions 305/305 dead transitions. [2023-08-03 19:49:14,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 305 transitions, 3736 flow [2023-08-03 19:49:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-03 19:49:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-03 19:49:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 7356 transitions. [2023-08-03 19:49:14,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3561365286855483 [2023-08-03 19:49:14,079 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 7356 transitions. [2023-08-03 19:49:14,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 7356 transitions. [2023-08-03 19:49:14,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:14,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 7356 transitions. [2023-08-03 19:49:14,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 272.44444444444446) internal successors, (7356), 27 states have internal predecessors, (7356), 0 states have call successors, (0), 0 states 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 19:49:14,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 765.0) internal successors, (21420), 28 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states 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 19:49:14,102 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 765.0) internal successors, (21420), 28 states have internal predecessors, (21420), 0 states have call successors, (0), 0 states 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 19:49:14,102 INFO L175 Difference]: Start difference. First operand has 149 places, 147 transitions, 1493 flow. Second operand 27 states and 7356 transitions. [2023-08-03 19:49:14,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 305 transitions, 3736 flow [2023-08-03 19:49:15,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 305 transitions, 3596 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-03 19:49:15,074 INFO L231 Difference]: Finished difference. Result has 166 places, 0 transitions, 0 flow [2023-08-03 19:49:15,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=765, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=0, PETRI_PLACES=166, PETRI_TRANSITIONS=0} [2023-08-03 19:49:15,074 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 110 predicate places. [2023-08-03 19:49:15,074 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 0 transitions, 0 flow [2023-08-03 19:49:15,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 270.3181818181818) internal successors, (5947), 22 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states 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 19:49:15,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 19:49:15,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 19:49:15,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 19:49:15,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 19:49:15,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-03 19:49:15,276 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 19:49:15,278 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:49:15,278 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:49:15,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:49:15 BasicIcfg [2023-08-03 19:49:15,280 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:49:15,280 INFO L158 Benchmark]: Toolchain (without parser) took 181998.77ms. Allocated memory was 362.8MB in the beginning and 12.8GB in the end (delta: 12.4GB). Free memory was 306.9MB in the beginning and 8.9GB in the end (delta: -8.6GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 362.8MB. Free memory was 311.7MB in the beginning and 311.6MB in the end (delta: 123.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.85ms. Allocated memory is still 362.8MB. Free memory was 306.7MB in the beginning and 295.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.92ms. Allocated memory is still 362.8MB. Free memory was 295.0MB in the beginning and 292.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: Boogie Preprocessor took 25.02ms. Allocated memory is still 362.8MB. Free memory was 292.8MB in the beginning and 291.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: RCFGBuilder took 474.25ms. Allocated memory was 362.8MB in the beginning and 587.2MB in the end (delta: 224.4MB). Free memory was 290.9MB in the beginning and 546.1MB in the end (delta: -255.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. [2023-08-03 19:49:15,281 INFO L158 Benchmark]: TraceAbstraction took 181179.35ms. Allocated memory was 587.2MB in the beginning and 12.8GB in the end (delta: 12.2GB). Free memory was 545.8MB in the beginning and 8.9GB in the end (delta: -8.4GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-03 19:49:15,283 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 362.8MB. Free memory was 311.7MB in the beginning and 311.6MB in the end (delta: 123.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 276.85ms. Allocated memory is still 362.8MB. Free memory was 306.7MB in the beginning and 295.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.92ms. Allocated memory is still 362.8MB. Free memory was 295.0MB in the beginning and 292.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.02ms. Allocated memory is still 362.8MB. Free memory was 292.8MB in the beginning and 291.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 474.25ms. Allocated memory was 362.8MB in the beginning and 587.2MB in the end (delta: 224.4MB). Free memory was 290.9MB in the beginning and 546.1MB in the end (delta: -255.2MB). Peak memory consumption was 17.6MB. Max. memory is 16.0GB. * TraceAbstraction took 181179.35ms. Allocated memory was 587.2MB in the beginning and 12.8GB in the end (delta: 12.2GB). Free memory was 545.8MB in the beginning and 8.9GB in the end (delta: -8.4GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.2s, 227 PlacesBefore, 41 PlacesAfterwards, 249 TransitionsBefore, 44 TransitionsAfterwards, 23868 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 136 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 64 ConcurrentYvCompositions, 19 ChoiceCompositions, 264 TotalNumberOfCompositions, 25911 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25216, independent: 25177, independent conditional: 0, independent unconditional: 25177, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 14257, independent: 14233, independent conditional: 0, independent unconditional: 14233, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25216, independent: 10944, independent conditional: 0, independent unconditional: 10944, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 14257, unknown conditional: 0, unknown unconditional: 14257] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, 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: 9.0s, 326 PlacesBefore, 56 PlacesAfterwards, 363 TransitionsBefore, 62 TransitionsAfterwards, 72828 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 218 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 108 ConcurrentYvCompositions, 31 ChoiceCompositions, 402 TotalNumberOfCompositions, 89862 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 86346, independent: 86280, independent conditional: 0, independent unconditional: 86280, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 43749, independent: 43712, independent conditional: 0, independent unconditional: 43712, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 86346, independent: 42568, independent conditional: 0, independent unconditional: 42568, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 43749, unknown conditional: 0, unknown unconditional: 43749] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, 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: 81]: 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, 314 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: 6.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, 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, 0.1s 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, 407 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: 174.2s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 122.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9117 SdHoareTripleChecker+Valid, 19.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8465 mSDsluCounter, 43850 SdHoareTripleChecker+Invalid, 16.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43808 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32778 IncrementalHoareTripleChecker+Invalid, 33074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 42 mSDtfsCounter, 32778 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1699 GetRequests, 1381 SyntacticMatches, 47 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2455 ImplicationChecksByTransitivity, 22.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2847occurred in iteration=18, InterpolantAutomatonStates: 194, 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, 1.2s SatisfiabilityAnalysisTime, 33.6s InterpolantComputationTime, 1644 NumberOfCodeBlocks, 1644 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2213 ConstructedInterpolants, 0 QuantifiedInterpolants, 44206 SizeOfPredicates, 368 NumberOfNonLiveVariables, 3806 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 53 InterpolantComputations, 9 PerfectInterpolantSequences, 976/1123 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 19:49:15,303 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...