./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:08:16,592 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:08:16,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:08:16,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:08:16,636 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:08:16,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:08:16,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:08:16,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:08:16,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:08:16,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:08:16,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:08:16,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:08:16,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:08:16,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:08:16,657 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:08:16,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:08:16,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:08:16,658 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:08:16,658 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:08:16,659 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:08:16,659 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:08:16,659 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:08:16,660 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:08:16,660 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:08:16,660 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:08:16,660 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:08:16,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:08:16,661 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:08:16,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:08:16,661 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:08:16,661 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:08:16,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:08:16,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:16,662 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:08:16,662 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:08:16,663 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:08:16,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:08:16,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:08:16,663 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:08:16,663 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:08:16,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:08:16,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:08:16,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-13 07:08:16,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:08:16,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:08:16,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:08:16,991 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:08:16,992 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:08:16,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 07:08:18,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:08:18,656 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:08:18,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-13 07:08:18,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d1d65b7/53b50b398af641fba61ab60af993d3da/FLAGfba56ab7a [2024-10-13 07:08:19,042 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55d1d65b7/53b50b398af641fba61ab60af993d3da [2024-10-13 07:08:19,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:08:19,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:08:19,052 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:19,052 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:08:19,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:08:19,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4684c9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19, skipping insertion in model container [2024-10-13 07:08:19,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,101 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:08:19,307 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2356,2369] [2024-10-13 07:08:19,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:19,343 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:08:19,357 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c[2356,2369] [2024-10-13 07:08:19,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:08:19,400 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:08:19,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19 WrapperNode [2024-10-13 07:08:19,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:08:19,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:19,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:08:19,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:08:19,416 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,423 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,445 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 160 [2024-10-13 07:08:19,445 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:08:19,446 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:08:19,446 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:08:19,446 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:08:19,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,466 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,489 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 07:08:19,490 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,493 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,496 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:08:19,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:08:19,500 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:08:19,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:08:19,501 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (1/1) ... [2024-10-13 07:08:19,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:08:19,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:19,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:08:19,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:08:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:08:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:08:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:08:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:08:19,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:08:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:08:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:08:19,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:08:19,587 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:08:19,665 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:08:19,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:08:19,877 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:08:19,877 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:08:20,091 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:08:20,091 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 07:08:20,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:20 BoogieIcfgContainer [2024-10-13 07:08:20,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:08:20,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:08:20,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:08:20,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:08:20,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:19" (1/3) ... [2024-10-13 07:08:20,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed1664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:20, skipping insertion in model container [2024-10-13 07:08:20,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:19" (2/3) ... [2024-10-13 07:08:20,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ed1664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:20, skipping insertion in model container [2024-10-13 07:08:20,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:20" (3/3) ... [2024-10-13 07:08:20,099 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-13 07:08:20,112 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:08:20,112 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:08:20,113 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:08:20,145 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 07:08:20,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-10-13 07:08:20,192 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-10-13 07:08:20,192 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:08:20,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place. [2024-10-13 07:08:20,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-10-13 07:08:20,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-10-13 07:08:20,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:08:20,209 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@34851907, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:08:20,209 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 07:08:20,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:08:20,215 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-13 07:08:20,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 07:08:20,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:20,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:20,216 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:20,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:20,221 INFO L85 PathProgramCache]: Analyzing trace with hash 885364131, now seen corresponding path program 1 times [2024-10-13 07:08:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034599435] [2024-10-13 07:08:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:20,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:20,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:20,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034599435] [2024-10-13 07:08:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034599435] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:20,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101249980] [2024-10-13 07:08:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:20,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:20,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:20,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:20,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:20,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:20,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:20,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:20,924 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-10-13 07:08:20,926 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-13 07:08:20,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 128 events. 67/128 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 341 event pairs, 14 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 222. Up to 72 conditions per place. [2024-10-13 07:08:20,930 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-10-13 07:08:20,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-10-13 07:08:20,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:20,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-13 07:08:20,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-13 07:08:20,943 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 5 states and 50 transitions. [2024-10-13 07:08:20,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-10-13 07:08:20,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:20,948 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-10-13 07:08:20,950 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-10-13 07:08:20,953 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2024-10-13 07:08:20,955 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-10-13 07:08:20,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:20,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:20,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:20,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:08:20,956 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:20,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 786232087, now seen corresponding path program 2 times [2024-10-13 07:08:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:20,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041833058] [2024-10-13 07:08:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:21,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041833058] [2024-10-13 07:08:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041833058] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:21,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 07:08:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201795640] [2024-10-13 07:08:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:21,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:21,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:21,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:21,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:21,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:21,368 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-10-13 07:08:21,368 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-13 07:08:21,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 121 events. 66/121 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 326 event pairs, 11 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 325. Up to 72 conditions per place. [2024-10-13 07:08:21,370 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-10-13 07:08:21,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-10-13 07:08:21,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-10-13 07:08:21,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-13 07:08:21,373 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 49 transitions. [2024-10-13 07:08:21,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-10-13 07:08:21,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-13 07:08:21,376 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-10-13 07:08:21,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-10-13 07:08:21,378 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2024-10-13 07:08:21,378 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-10-13 07:08:21,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:21,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:21,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:08:21,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:21,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:21,381 INFO L85 PathProgramCache]: Analyzing trace with hash 130402592, now seen corresponding path program 1 times [2024-10-13 07:08:21,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:21,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557691034] [2024-10-13 07:08:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:21,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557691034] [2024-10-13 07:08:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557691034] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:21,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:21,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62772101] [2024-10-13 07:08:21,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:21,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:21,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:21,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:21,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:21,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:21,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:21,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:21,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:21,654 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-10-13 07:08:21,658 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-10-13 07:08:21,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 140 events. 80/140 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 394 event pairs, 25 based on Foata normal form. 3/134 useless extension candidates. Maximal degree in co-relation 456. Up to 102 conditions per place. [2024-10-13 07:08:21,660 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-10-13 07:08:21,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-10-13 07:08:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:21,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:21,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-13 07:08:21,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:21,663 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 45 transitions. [2024-10-13 07:08:21,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-10-13 07:08:21,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:21,669 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-10-13 07:08:21,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-10-13 07:08:21,670 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2024-10-13 07:08:21,670 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-10-13 07:08:21,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,670 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:21,670 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:21,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:08:21,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:21,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1679495154, now seen corresponding path program 2 times [2024-10-13 07:08:21,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:21,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626899385] [2024-10-13 07:08:21,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:21,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:21,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626899385] [2024-10-13 07:08:21,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626899385] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:21,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:21,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611292320] [2024-10-13 07:08:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:21,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:21,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:21,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:21,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:21,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:21,875 INFO L124 PetriNetUnfolderBase]: 82/151 cut-off events. [2024-10-13 07:08:21,875 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-10-13 07:08:21,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 151 events. 82/151 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 442 event pairs, 24 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 509. Up to 80 conditions per place. [2024-10-13 07:08:21,877 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 32 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2024-10-13 07:08:21,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 322 flow [2024-10-13 07:08:21,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:21,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:21,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-10-13 07:08:21,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-13 07:08:21,879 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 5 states and 49 transitions. [2024-10-13 07:08:21,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 322 flow [2024-10-13 07:08:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 301 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:21,886 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 167 flow [2024-10-13 07:08:21,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-10-13 07:08:21,887 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2024-10-13 07:08:21,887 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 167 flow [2024-10-13 07:08:21,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:21,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:21,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:08:21,888 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:21,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash -195788256, now seen corresponding path program 3 times [2024-10-13 07:08:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:21,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335415617] [2024-10-13 07:08:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:21,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:21,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:21,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335415617] [2024-10-13 07:08:21,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335415617] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:21,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:21,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:21,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837623144] [2024-10-13 07:08:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:21,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:21,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:21,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:21,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:21,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:21,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,021 INFO L124 PetriNetUnfolderBase]: 89/160 cut-off events. [2024-10-13 07:08:22,021 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-13 07:08:22,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 160 events. 89/160 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 462 event pairs, 35 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 580. Up to 130 conditions per place. [2024-10-13 07:08:22,023 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 12 changer transitions 4/40 dead transitions. [2024-10-13 07:08:22,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 315 flow [2024-10-13 07:08:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-10-13 07:08:22,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-13 07:08:22,025 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 167 flow. Second operand 5 states and 44 transitions. [2024-10-13 07:08:22,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 315 flow [2024-10-13 07:08:22,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:22,028 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 218 flow [2024-10-13 07:08:22,028 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2024-10-13 07:08:22,029 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2024-10-13 07:08:22,029 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 218 flow [2024-10-13 07:08:22,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:22,030 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:22,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:08:22,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:22,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash -803180865, now seen corresponding path program 1 times [2024-10-13 07:08:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:22,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606115570] [2024-10-13 07:08:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:22,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:22,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606115570] [2024-10-13 07:08:22,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606115570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:22,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:22,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:22,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590301385] [2024-10-13 07:08:22,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:22,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:22,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:22,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:22,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:22,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:22,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:22,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:22,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,192 INFO L124 PetriNetUnfolderBase]: 92/160 cut-off events. [2024-10-13 07:08:22,193 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-10-13 07:08:22,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 160 events. 92/160 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 445 event pairs, 12 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 645. Up to 77 conditions per place. [2024-10-13 07:08:22,195 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 39 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-10-13 07:08:22,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 395 flow [2024-10-13 07:08:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-10-13 07:08:22,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-13 07:08:22,196 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 218 flow. Second operand 5 states and 52 transitions. [2024-10-13 07:08:22,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 395 flow [2024-10-13 07:08:22,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 350 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-13 07:08:22,199 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 224 flow [2024-10-13 07:08:22,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-10-13 07:08:22,200 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2024-10-13 07:08:22,200 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 224 flow [2024-10-13 07:08:22,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:22,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:22,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:08:22,201 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:22,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1498961711, now seen corresponding path program 2 times [2024-10-13 07:08:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975784750] [2024-10-13 07:08:22,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:22,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:22,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975784750] [2024-10-13 07:08:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975784750] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675894765] [2024-10-13 07:08:22,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:22,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:22,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:22,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:22,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:22,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:22,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,320 INFO L124 PetriNetUnfolderBase]: 93/171 cut-off events. [2024-10-13 07:08:22,320 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-10-13 07:08:22,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 171 events. 93/171 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 483 event pairs, 30 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 677. Up to 110 conditions per place. [2024-10-13 07:08:22,322 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 30 selfloop transitions, 11 changer transitions 3/45 dead transitions. [2024-10-13 07:08:22,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 361 flow [2024-10-13 07:08:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:22,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-13 07:08:22,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:22,323 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 224 flow. Second operand 5 states and 45 transitions. [2024-10-13 07:08:22,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 361 flow [2024-10-13 07:08:22,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 346 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:22,325 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 231 flow [2024-10-13 07:08:22,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2024-10-13 07:08:22,326 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2024-10-13 07:08:22,326 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 231 flow [2024-10-13 07:08:22,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:22,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:22,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:08:22,327 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:22,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1147608036, now seen corresponding path program 4 times [2024-10-13 07:08:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335556743] [2024-10-13 07:08:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335556743] [2024-10-13 07:08:22,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335556743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:22,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194530287] [2024-10-13 07:08:22,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:22,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:22,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:22,376 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) [2024-10-13 07:08:22,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 07:08:22,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:22,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:22,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:08:22,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194530287] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:22,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:22,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-13 07:08:22,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963876941] [2024-10-13 07:08:22,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:22,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 07:08:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 07:08:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 07:08:22,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 231 flow. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:22,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:22,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:22,647 INFO L124 PetriNetUnfolderBase]: 97/175 cut-off events. [2024-10-13 07:08:22,648 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-10-13 07:08:22,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 175 events. 97/175 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 492 event pairs, 12 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 712. Up to 60 conditions per place. [2024-10-13 07:08:22,650 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-10-13 07:08:22,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 454 flow [2024-10-13 07:08:22,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-10-13 07:08:22,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-13 07:08:22,652 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 231 flow. Second operand 7 states and 62 transitions. [2024-10-13 07:08:22,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 454 flow [2024-10-13 07:08:22,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 424 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:22,657 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 285 flow [2024-10-13 07:08:22,657 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-10-13 07:08:22,658 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2024-10-13 07:08:22,660 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 285 flow [2024-10-13 07:08:22,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:22,660 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:22,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 07:08:22,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:22,865 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash 496120645, now seen corresponding path program 3 times [2024-10-13 07:08:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011428337] [2024-10-13 07:08:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:22,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:22,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011428337] [2024-10-13 07:08:22,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011428337] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:22,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:22,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:22,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892088350] [2024-10-13 07:08:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:22,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:22,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:22,934 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:22,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 285 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:22,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:22,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:22,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:23,009 INFO L124 PetriNetUnfolderBase]: 104/187 cut-off events. [2024-10-13 07:08:23,011 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-10-13 07:08:23,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 187 events. 104/187 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 541 event pairs, 31 based on Foata normal form. 5/192 useless extension candidates. Maximal degree in co-relation 806. Up to 138 conditions per place. [2024-10-13 07:08:23,012 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 31 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2024-10-13 07:08:23,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 427 flow [2024-10-13 07:08:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-13 07:08:23,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-10-13 07:08:23,014 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 285 flow. Second operand 5 states and 47 transitions. [2024-10-13 07:08:23,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 427 flow [2024-10-13 07:08:23,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 407 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 07:08:23,017 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 311 flow [2024-10-13 07:08:23,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2024-10-13 07:08:23,018 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2024-10-13 07:08:23,019 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 311 flow [2024-10-13 07:08:23,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,020 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:23,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:23,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 07:08:23,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:23,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:23,021 INFO L85 PathProgramCache]: Analyzing trace with hash -960995445, now seen corresponding path program 4 times [2024-10-13 07:08:23,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:23,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848339684] [2024-10-13 07:08:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:23,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848339684] [2024-10-13 07:08:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848339684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:23,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848078021] [2024-10-13 07:08:23,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:23,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:23,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:23,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:23,157 INFO L124 PetriNetUnfolderBase]: 103/188 cut-off events. [2024-10-13 07:08:23,157 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-10-13 07:08:23,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 188 events. 103/188 cut-off events. For 451/451 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 560 event pairs, 36 based on Foata normal form. 2/190 useless extension candidates. Maximal degree in co-relation 847. Up to 147 conditions per place. [2024-10-13 07:08:23,159 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 28 selfloop transitions, 14 changer transitions 2/45 dead transitions. [2024-10-13 07:08:23,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 424 flow [2024-10-13 07:08:23,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:23,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2024-10-13 07:08:23,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-10-13 07:08:23,160 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 311 flow. Second operand 5 states and 43 transitions. [2024-10-13 07:08:23,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 424 flow [2024-10-13 07:08:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 390 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:23,162 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 292 flow [2024-10-13 07:08:23,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2024-10-13 07:08:23,163 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-10-13 07:08:23,163 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 292 flow [2024-10-13 07:08:23,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:23,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:23,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 07:08:23,163 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:23,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash -102918228, now seen corresponding path program 5 times [2024-10-13 07:08:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149505322] [2024-10-13 07:08:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:23,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149505322] [2024-10-13 07:08:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149505322] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688459828] [2024-10-13 07:08:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:23,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:23,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:23,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:23,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:23,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:23,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:23,266 INFO L124 PetriNetUnfolderBase]: 108/195 cut-off events. [2024-10-13 07:08:23,266 INFO L125 PetriNetUnfolderBase]: For 534/534 co-relation queries the response was YES. [2024-10-13 07:08:23,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 195 events. 108/195 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 575 event pairs, 36 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 862. Up to 151 conditions per place. [2024-10-13 07:08:23,268 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 31 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-10-13 07:08:23,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 435 flow [2024-10-13 07:08:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-13 07:08:23,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:23,269 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 292 flow. Second operand 5 states and 45 transitions. [2024-10-13 07:08:23,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 435 flow [2024-10-13 07:08:23,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 405 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:23,271 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 304 flow [2024-10-13 07:08:23,271 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-10-13 07:08:23,271 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-10-13 07:08:23,271 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 304 flow [2024-10-13 07:08:23,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:23,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 07:08:23,272 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:23,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 571836441, now seen corresponding path program 5 times [2024-10-13 07:08:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075961420] [2024-10-13 07:08:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:23,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075961420] [2024-10-13 07:08:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075961420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53922629] [2024-10-13 07:08:23,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:23,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:23,317 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) [2024-10-13 07:08:23,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 07:08:23,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:23,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:23,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:08:23,372 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53922629] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:23,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:23,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 07:08:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894234894] [2024-10-13 07:08:23,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:23,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:23,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:08:23,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:23,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:23,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:23,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:23,512 INFO L124 PetriNetUnfolderBase]: 103/190 cut-off events. [2024-10-13 07:08:23,512 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2024-10-13 07:08:23,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 190 events. 103/190 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 570 event pairs, 35 based on Foata normal form. 5/195 useless extension candidates. Maximal degree in co-relation 822. Up to 149 conditions per place. [2024-10-13 07:08:23,513 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-10-13 07:08:23,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 433 flow [2024-10-13 07:08:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 07:08:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 07:08:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-10-13 07:08:23,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-10-13 07:08:23,514 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 304 flow. Second operand 6 states and 51 transitions. [2024-10-13 07:08:23,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 433 flow [2024-10-13 07:08:23,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 397 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:23,517 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 304 flow [2024-10-13 07:08:23,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-10-13 07:08:23,517 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 32 predicate places. [2024-10-13 07:08:23,517 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 304 flow [2024-10-13 07:08:23,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:23,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:23,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:23,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-13 07:08:23,723 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:23,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1280825105, now seen corresponding path program 6 times [2024-10-13 07:08:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003185349] [2024-10-13 07:08:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:23,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003185349] [2024-10-13 07:08:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003185349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:08:23,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:08:23,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 07:08:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653787948] [2024-10-13 07:08:23,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:08:23,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 07:08:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 07:08:23,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 07:08:23,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:23,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:23,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:23,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:23,902 INFO L124 PetriNetUnfolderBase]: 99/178 cut-off events. [2024-10-13 07:08:23,902 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-10-13 07:08:23,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 178 events. 99/178 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 507 event pairs, 32 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 787. Up to 135 conditions per place. [2024-10-13 07:08:23,904 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 12 changer transitions 2/44 dead transitions. [2024-10-13 07:08:23,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 406 flow [2024-10-13 07:08:23,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 07:08:23,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 07:08:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2024-10-13 07:08:23,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-13 07:08:23,905 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 304 flow. Second operand 5 states and 41 transitions. [2024-10-13 07:08:23,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 406 flow [2024-10-13 07:08:23,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 362 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-13 07:08:23,908 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 268 flow [2024-10-13 07:08:23,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2024-10-13 07:08:23,909 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-10-13 07:08:23,909 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 268 flow [2024-10-13 07:08:23,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:23,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:23,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:23,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 07:08:23,910 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:23,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 519243532, now seen corresponding path program 6 times [2024-10-13 07:08:23,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:23,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810432972] [2024-10-13 07:08:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:23,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:23,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810432972] [2024-10-13 07:08:23,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810432972] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:23,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851300066] [2024-10-13 07:08:23,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:23,962 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) [2024-10-13 07:08:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 07:08:24,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:08:24,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:24,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 07:08:24,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851300066] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:24,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:24,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 07:08:24,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444674832] [2024-10-13 07:08:24,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:24,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 07:08:24,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:24,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 07:08:24,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-13 07:08:24,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:24,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 268 flow. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:24,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:24,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:24,195 INFO L124 PetriNetUnfolderBase]: 96/168 cut-off events. [2024-10-13 07:08:24,195 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-10-13 07:08:24,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 168 events. 96/168 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 17 based on Foata normal form. 4/172 useless extension candidates. Maximal degree in co-relation 718. Up to 65 conditions per place. [2024-10-13 07:08:24,197 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 35 selfloop transitions, 23 changer transitions 0/59 dead transitions. [2024-10-13 07:08:24,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 487 flow [2024-10-13 07:08:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 76 transitions. [2024-10-13 07:08:24,199 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-10-13 07:08:24,199 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 268 flow. Second operand 10 states and 76 transitions. [2024-10-13 07:08:24,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 487 flow [2024-10-13 07:08:24,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:24,202 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 337 flow [2024-10-13 07:08:24,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-10-13 07:08:24,203 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2024-10-13 07:08:24,203 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 337 flow [2024-10-13 07:08:24,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:24,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:24,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 07:08:24,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:24,408 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:24,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:24,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1973538062, now seen corresponding path program 1 times [2024-10-13 07:08:24,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:24,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682641496] [2024-10-13 07:08:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:24,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:24,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682641496] [2024-10-13 07:08:24,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682641496] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:24,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132946607] [2024-10-13 07:08:24,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:24,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:24,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:24,599 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) [2024-10-13 07:08:24,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 07:08:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:24,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:24,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132946607] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:24,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-13 07:08:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824145384] [2024-10-13 07:08:24,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:24,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:24,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:24,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 337 flow. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:24,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:24,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:24,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:25,250 INFO L124 PetriNetUnfolderBase]: 132/235 cut-off events. [2024-10-13 07:08:25,254 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2024-10-13 07:08:25,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 235 events. 132/235 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 774 event pairs, 9 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 1039. Up to 158 conditions per place. [2024-10-13 07:08:25,257 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-10-13 07:08:25,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 614 flow [2024-10-13 07:08:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:25,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-10-13 07:08:25,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:25,261 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 337 flow. Second operand 7 states and 63 transitions. [2024-10-13 07:08:25,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 614 flow [2024-10-13 07:08:25,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 526 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:25,270 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 395 flow [2024-10-13 07:08:25,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-10-13 07:08:25,270 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2024-10-13 07:08:25,270 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 395 flow [2024-10-13 07:08:25,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:25,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:25,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:25,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:25,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-13 07:08:25,472 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:25,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1662875284, now seen corresponding path program 2 times [2024-10-13 07:08:25,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:25,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197481700] [2024-10-13 07:08:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:25,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:25,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197481700] [2024-10-13 07:08:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197481700] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554467116] [2024-10-13 07:08:25,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:25,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:25,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:25,669 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) [2024-10-13 07:08:25,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 07:08:25,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:25,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:25,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:25,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:25,841 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:25,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554467116] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:25,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:25,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 07:08:25,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810764082] [2024-10-13 07:08:25,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:25,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:08:25,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:25,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:08:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:08:25,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:25,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 395 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:25,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:25,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:25,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:26,120 INFO L124 PetriNetUnfolderBase]: 143/259 cut-off events. [2024-10-13 07:08:26,121 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2024-10-13 07:08:26,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 259 events. 143/259 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 886 event pairs, 14 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 1191. Up to 161 conditions per place. [2024-10-13 07:08:26,123 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 51 selfloop transitions, 19 changer transitions 4/75 dead transitions. [2024-10-13 07:08:26,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 653 flow [2024-10-13 07:08:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:26,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-10-13 07:08:26,124 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-13 07:08:26,124 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 395 flow. Second operand 7 states and 66 transitions. [2024-10-13 07:08:26,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 653 flow [2024-10-13 07:08:26,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 628 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:26,127 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 470 flow [2024-10-13 07:08:26,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-10-13 07:08:26,128 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2024-10-13 07:08:26,128 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 470 flow [2024-10-13 07:08:26,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:26,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:26,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:26,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 07:08:26,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-13 07:08:26,330 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:26,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:26,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1579758394, now seen corresponding path program 3 times [2024-10-13 07:08:26,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:26,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463044482] [2024-10-13 07:08:26,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:26,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:26,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463044482] [2024-10-13 07:08:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463044482] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181528693] [2024-10-13 07:08:26,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:26,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:26,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:26,609 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) [2024-10-13 07:08:26,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 07:08:26,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:08:26,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:26,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:26,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:26,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:26,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:27,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181528693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:27,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:27,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 07:08:27,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846507129] [2024-10-13 07:08:27,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:27,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:08:27,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:08:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:08:27,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:27,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 470 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:27,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:27,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:27,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:27,419 INFO L124 PetriNetUnfolderBase]: 141/251 cut-off events. [2024-10-13 07:08:27,420 INFO L125 PetriNetUnfolderBase]: For 899/899 co-relation queries the response was YES. [2024-10-13 07:08:27,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 251 events. 141/251 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 842 event pairs, 14 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 1244. Up to 161 conditions per place. [2024-10-13 07:08:27,423 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 20 changer transitions 4/73 dead transitions. [2024-10-13 07:08:27,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 693 flow [2024-10-13 07:08:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:27,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-10-13 07:08:27,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:27,424 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 470 flow. Second operand 7 states and 63 transitions. [2024-10-13 07:08:27,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 693 flow [2024-10-13 07:08:27,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 636 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:27,430 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 503 flow [2024-10-13 07:08:27,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=503, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-10-13 07:08:27,431 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2024-10-13 07:08:27,431 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 503 flow [2024-10-13 07:08:27,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:27,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:27,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:27,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:27,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 07:08:27,633 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:27,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash -846354170, now seen corresponding path program 4 times [2024-10-13 07:08:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:27,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523065448] [2024-10-13 07:08:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:27,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:27,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:27,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523065448] [2024-10-13 07:08:27,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523065448] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:27,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867614848] [2024-10-13 07:08:27,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:27,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:27,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:27,884 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) [2024-10-13 07:08:27,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 07:08:27,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:27,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:27,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:27,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:28,114 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867614848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:28,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-13 07:08:28,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824689781] [2024-10-13 07:08:28,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:28,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:28,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:28,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:28,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 503 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:28,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:28,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:28,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:28,504 INFO L124 PetriNetUnfolderBase]: 166/294 cut-off events. [2024-10-13 07:08:28,505 INFO L125 PetriNetUnfolderBase]: For 985/985 co-relation queries the response was YES. [2024-10-13 07:08:28,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 294 events. 166/294 cut-off events. For 985/985 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1047 event pairs, 18 based on Foata normal form. 1/295 useless extension candidates. Maximal degree in co-relation 1472. Up to 235 conditions per place. [2024-10-13 07:08:28,512 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 58 selfloop transitions, 19 changer transitions 4/82 dead transitions. [2024-10-13 07:08:28,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 800 flow [2024-10-13 07:08:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-10-13 07:08:28,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-13 07:08:28,516 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 503 flow. Second operand 7 states and 57 transitions. [2024-10-13 07:08:28,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 800 flow [2024-10-13 07:08:28,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 753 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:28,525 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 628 flow [2024-10-13 07:08:28,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=628, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-13 07:08:28,526 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2024-10-13 07:08:28,530 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 628 flow [2024-10-13 07:08:28,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:28,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:28,531 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:28,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 07:08:28,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:28,731 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:28,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1647747176, now seen corresponding path program 5 times [2024-10-13 07:08:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:28,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470914652] [2024-10-13 07:08:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:28,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470914652] [2024-10-13 07:08:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470914652] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:28,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032366] [2024-10-13 07:08:28,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:28,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:28,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:28,943 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) [2024-10-13 07:08:28,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 07:08:29,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:08:29,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:29,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:29,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:29,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:29,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-13 07:08:29,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863218003] [2024-10-13 07:08:29,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:29,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:29,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:29,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 628 flow. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:29,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:29,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:29,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:29,419 INFO L124 PetriNetUnfolderBase]: 178/319 cut-off events. [2024-10-13 07:08:29,420 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2024-10-13 07:08:29,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 319 events. 178/319 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1160 event pairs, 17 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1692. Up to 238 conditions per place. [2024-10-13 07:08:29,422 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 65 selfloop transitions, 20 changer transitions 4/90 dead transitions. [2024-10-13 07:08:29,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 934 flow [2024-10-13 07:08:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-10-13 07:08:29,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-13 07:08:29,423 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 628 flow. Second operand 7 states and 62 transitions. [2024-10-13 07:08:29,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 934 flow [2024-10-13 07:08:29,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 895 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-10-13 07:08:29,427 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 707 flow [2024-10-13 07:08:29,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=707, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-10-13 07:08:29,428 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2024-10-13 07:08:29,428 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 707 flow [2024-10-13 07:08:29,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:29,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:29,428 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:29,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 07:08:29,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:29,633 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:29,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1730864066, now seen corresponding path program 6 times [2024-10-13 07:08:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750388890] [2024-10-13 07:08:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:29,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750388890] [2024-10-13 07:08:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750388890] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:29,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380344664] [2024-10-13 07:08:29,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:29,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:29,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:29,872 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) [2024-10-13 07:08:29,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 07:08:29,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:08:29,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:29,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 07:08:29,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380344664] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:30,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-13 07:08:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547717174] [2024-10-13 07:08:30,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:30,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:08:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:08:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:08:30,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:30,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 707 flow. Second operand has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:30,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:30,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:30,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:30,464 INFO L124 PetriNetUnfolderBase]: 176/311 cut-off events. [2024-10-13 07:08:30,464 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2024-10-13 07:08:30,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 311 events. 176/311 cut-off events. For 1593/1593 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1123 event pairs, 17 based on Foata normal form. 1/312 useless extension candidates. Maximal degree in co-relation 1722. Up to 238 conditions per place. [2024-10-13 07:08:30,467 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 63 selfloop transitions, 21 changer transitions 4/89 dead transitions. [2024-10-13 07:08:30,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 971 flow [2024-10-13 07:08:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-10-13 07:08:30,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-13 07:08:30,469 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 707 flow. Second operand 7 states and 60 transitions. [2024-10-13 07:08:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 971 flow [2024-10-13 07:08:30,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 891 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:30,477 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 729 flow [2024-10-13 07:08:30,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=729, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-10-13 07:08:30,478 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2024-10-13 07:08:30,478 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 729 flow [2024-10-13 07:08:30,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.714285714285714) internal successors, (80), 14 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:30,478 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:30,478 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:30,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 07:08:30,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:30,683 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:30,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -458812811, now seen corresponding path program 7 times [2024-10-13 07:08:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940334113] [2024-10-13 07:08:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:30,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940334113] [2024-10-13 07:08:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940334113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:30,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079030564] [2024-10-13 07:08:30,753 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:30,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:30,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:30,755 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) [2024-10-13 07:08:30,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 07:08:30,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:30,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:30,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:30,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:30,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079030564] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:30,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:30,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 07:08:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538175640] [2024-10-13 07:08:30,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:30,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:30,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:30,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 729 flow. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:30,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:30,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:30,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:31,000 INFO L124 PetriNetUnfolderBase]: 190/340 cut-off events. [2024-10-13 07:08:31,001 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-10-13 07:08:31,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1923 conditions, 340 events. 190/340 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1290 event pairs, 30 based on Foata normal form. 3/343 useless extension candidates. Maximal degree in co-relation 1888. Up to 129 conditions per place. [2024-10-13 07:08:31,003 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 64 selfloop transitions, 32 changer transitions 8/105 dead transitions. [2024-10-13 07:08:31,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 1160 flow [2024-10-13 07:08:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-10-13 07:08:31,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-13 07:08:31,004 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 729 flow. Second operand 7 states and 65 transitions. [2024-10-13 07:08:31,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 1160 flow [2024-10-13 07:08:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 1095 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:31,010 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 807 flow [2024-10-13 07:08:31,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=807, PETRI_PLACES=90, PETRI_TRANSITIONS=78} [2024-10-13 07:08:31,011 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2024-10-13 07:08:31,011 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 807 flow [2024-10-13 07:08:31,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,011 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:31,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 07:08:31,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 07:08:31,212 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:31,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2081245415, now seen corresponding path program 8 times [2024-10-13 07:08:31,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539829023] [2024-10-13 07:08:31,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:31,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539829023] [2024-10-13 07:08:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539829023] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:31,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495861982] [2024-10-13 07:08:31,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:31,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:31,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:31,283 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) [2024-10-13 07:08:31,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 07:08:31,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:31,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:31,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:31,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,381 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:31,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495861982] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:31,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 07:08:31,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571769615] [2024-10-13 07:08:31,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:31,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:31,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:31,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:31,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 78 transitions, 807 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:31,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:31,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:31,626 INFO L124 PetriNetUnfolderBase]: 217/382 cut-off events. [2024-10-13 07:08:31,626 INFO L125 PetriNetUnfolderBase]: For 2621/2621 co-relation queries the response was YES. [2024-10-13 07:08:31,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2285 conditions, 382 events. 217/382 cut-off events. For 2621/2621 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1484 event pairs, 40 based on Foata normal form. 6/388 useless extension candidates. Maximal degree in co-relation 2247. Up to 191 conditions per place. [2024-10-13 07:08:31,631 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 62 selfloop transitions, 54 changer transitions 6/123 dead transitions. [2024-10-13 07:08:31,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 1443 flow [2024-10-13 07:08:31,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:31,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-10-13 07:08:31,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-10-13 07:08:31,632 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 807 flow. Second operand 11 states and 89 transitions. [2024-10-13 07:08:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 1443 flow [2024-10-13 07:08:31,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1383 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:31,646 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 1142 flow [2024-10-13 07:08:31,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1142, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2024-10-13 07:08:31,648 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 79 predicate places. [2024-10-13 07:08:31,648 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 1142 flow [2024-10-13 07:08:31,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:31,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:31,648 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:31,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 07:08:31,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-13 07:08:31,850 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:31,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash -448813044, now seen corresponding path program 9 times [2024-10-13 07:08:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404962248] [2024-10-13 07:08:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:32,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404962248] [2024-10-13 07:08:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404962248] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088022071] [2024-10-13 07:08:32,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:32,006 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) [2024-10-13 07:08:32,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 07:08:32,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:08:32,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:32,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:32,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,126 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088022071] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:32,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:32,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 07:08:32,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930866280] [2024-10-13 07:08:32,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:32,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:32,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:32,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:32,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 1142 flow. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:32,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:32,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:32,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:32,380 INFO L124 PetriNetUnfolderBase]: 221/382 cut-off events. [2024-10-13 07:08:32,381 INFO L125 PetriNetUnfolderBase]: For 3150/3150 co-relation queries the response was YES. [2024-10-13 07:08:32,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2488 conditions, 382 events. 221/382 cut-off events. For 3150/3150 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1437 event pairs, 18 based on Foata normal form. 5/387 useless extension candidates. Maximal degree in co-relation 2447. Up to 106 conditions per place. [2024-10-13 07:08:32,385 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 84 selfloop transitions, 49 changer transitions 0/134 dead transitions. [2024-10-13 07:08:32,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 1718 flow [2024-10-13 07:08:32,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-10-13 07:08:32,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:08:32,386 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 1142 flow. Second operand 10 states and 90 transitions. [2024-10-13 07:08:32,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 1718 flow [2024-10-13 07:08:32,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 1595 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:32,402 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 1239 flow [2024-10-13 07:08:32,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1239, PETRI_PLACES=108, PETRI_TRANSITIONS=102} [2024-10-13 07:08:32,403 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 88 predicate places. [2024-10-13 07:08:32,403 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 1239 flow [2024-10-13 07:08:32,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:32,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:32,404 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:32,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-13 07:08:32,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 07:08:32,604 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:32,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash -524428952, now seen corresponding path program 10 times [2024-10-13 07:08:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925656692] [2024-10-13 07:08:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925656692] [2024-10-13 07:08:32,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925656692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:32,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389467348] [2024-10-13 07:08:32,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:32,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:32,678 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) [2024-10-13 07:08:32,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 07:08:32,745 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:32,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:32,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:32,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:32,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389467348] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:32,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:32,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:32,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815435306] [2024-10-13 07:08:32,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:32,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:32,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:32,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:32,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 102 transitions, 1239 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:32,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:32,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:32,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:33,063 INFO L124 PetriNetUnfolderBase]: 255/432 cut-off events. [2024-10-13 07:08:33,063 INFO L125 PetriNetUnfolderBase]: For 4543/4543 co-relation queries the response was YES. [2024-10-13 07:08:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3001 conditions, 432 events. 255/432 cut-off events. For 4543/4543 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1652 event pairs, 32 based on Foata normal form. 6/438 useless extension candidates. Maximal degree in co-relation 2956. Up to 170 conditions per place. [2024-10-13 07:08:33,069 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 83 selfloop transitions, 64 changer transitions 1/149 dead transitions. [2024-10-13 07:08:33,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 149 transitions, 2104 flow [2024-10-13 07:08:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:08:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:08:33,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 103 transitions. [2024-10-13 07:08:33,070 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-10-13 07:08:33,070 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 1239 flow. Second operand 13 states and 103 transitions. [2024-10-13 07:08:33,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 149 transitions, 2104 flow [2024-10-13 07:08:33,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 1900 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-10-13 07:08:33,090 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1687 flow [2024-10-13 07:08:33,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1687, PETRI_PLACES=121, PETRI_TRANSITIONS=127} [2024-10-13 07:08:33,090 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 101 predicate places. [2024-10-13 07:08:33,091 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1687 flow [2024-10-13 07:08:33,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:33,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:33,091 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:33,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:33,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 07:08:33,293 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:33,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1852949592, now seen corresponding path program 11 times [2024-10-13 07:08:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:33,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283615141] [2024-10-13 07:08:33,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:33,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:33,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283615141] [2024-10-13 07:08:33,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283615141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:33,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105883360] [2024-10-13 07:08:33,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:33,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:33,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:33,373 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) [2024-10-13 07:08:33,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 07:08:33,457 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:33,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:33,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:33,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:33,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:33,501 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105883360] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:33,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:33,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 07:08:33,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998494123] [2024-10-13 07:08:33,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:33,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:33,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:33,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:33,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:33,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:33,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 127 transitions, 1687 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:33,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:33,768 INFO L124 PetriNetUnfolderBase]: 311/522 cut-off events. [2024-10-13 07:08:33,769 INFO L125 PetriNetUnfolderBase]: For 6792/6792 co-relation queries the response was YES. [2024-10-13 07:08:33,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3824 conditions, 522 events. 311/522 cut-off events. For 6792/6792 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2040 event pairs, 30 based on Foata normal form. 19/541 useless extension candidates. Maximal degree in co-relation 3775. Up to 188 conditions per place. [2024-10-13 07:08:33,772 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 104 selfloop transitions, 75 changer transitions 0/180 dead transitions. [2024-10-13 07:08:33,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 180 transitions, 2646 flow [2024-10-13 07:08:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 112 transitions. [2024-10-13 07:08:33,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-13 07:08:33,774 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1687 flow. Second operand 14 states and 112 transitions. [2024-10-13 07:08:33,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 180 transitions, 2646 flow [2024-10-13 07:08:33,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 180 transitions, 2223 flow, removed 210 selfloop flow, removed 1 redundant places. [2024-10-13 07:08:33,791 INFO L231 Difference]: Finished difference. Result has 142 places, 155 transitions, 1992 flow [2024-10-13 07:08:33,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1992, PETRI_PLACES=142, PETRI_TRANSITIONS=155} [2024-10-13 07:08:33,792 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 122 predicate places. [2024-10-13 07:08:33,792 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 155 transitions, 1992 flow [2024-10-13 07:08:33,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:33,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:33,792 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:33,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:33,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:33,993 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:33,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2086199888, now seen corresponding path program 12 times [2024-10-13 07:08:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783047419] [2024-10-13 07:08:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:34,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:34,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783047419] [2024-10-13 07:08:34,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783047419] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:34,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774563585] [2024-10-13 07:08:34,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:34,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:34,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:34,055 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) [2024-10-13 07:08:34,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 07:08:34,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:08:34,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:34,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:34,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774563585] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:34,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:34,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476723159] [2024-10-13 07:08:34,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:34,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:34,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:34,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 155 transitions, 1992 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:34,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:34,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:34,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:34,418 INFO L124 PetriNetUnfolderBase]: 316/543 cut-off events. [2024-10-13 07:08:34,418 INFO L125 PetriNetUnfolderBase]: For 6757/6757 co-relation queries the response was YES. [2024-10-13 07:08:34,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 543 events. 316/543 cut-off events. For 6757/6757 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2199 event pairs, 31 based on Foata normal form. 12/555 useless extension candidates. Maximal degree in co-relation 3824. Up to 196 conditions per place. [2024-10-13 07:08:34,424 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 88 selfloop transitions, 94 changer transitions 0/183 dead transitions. [2024-10-13 07:08:34,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 183 transitions, 2583 flow [2024-10-13 07:08:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:08:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:08:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-10-13 07:08:34,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-10-13 07:08:34,425 INFO L175 Difference]: Start difference. First operand has 142 places, 155 transitions, 1992 flow. Second operand 16 states and 125 transitions. [2024-10-13 07:08:34,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 183 transitions, 2583 flow [2024-10-13 07:08:34,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 183 transitions, 2329 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:34,446 INFO L231 Difference]: Finished difference. Result has 152 places, 158 transitions, 2052 flow [2024-10-13 07:08:34,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2052, PETRI_PLACES=152, PETRI_TRANSITIONS=158} [2024-10-13 07:08:34,447 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 132 predicate places. [2024-10-13 07:08:34,447 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 158 transitions, 2052 flow [2024-10-13 07:08:34,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:34,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:34,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:34,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:34,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 07:08:34,648 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:34,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:34,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1784060601, now seen corresponding path program 13 times [2024-10-13 07:08:34,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:34,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311377355] [2024-10-13 07:08:34,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:34,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311377355] [2024-10-13 07:08:34,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311377355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:34,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484133874] [2024-10-13 07:08:34,722 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:34,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:34,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:34,724 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) [2024-10-13 07:08:34,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 07:08:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:34,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:34,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:34,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484133874] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:34,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:34,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:34,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667559828] [2024-10-13 07:08:34,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:34,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:34,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:34,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:34,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:34,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 158 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:34,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:34,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:34,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:35,079 INFO L124 PetriNetUnfolderBase]: 347/587 cut-off events. [2024-10-13 07:08:35,080 INFO L125 PetriNetUnfolderBase]: For 7034/7034 co-relation queries the response was YES. [2024-10-13 07:08:35,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 587 events. 347/587 cut-off events. For 7034/7034 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2387 event pairs, 70 based on Foata normal form. 8/595 useless extension candidates. Maximal degree in co-relation 4144. Up to 403 conditions per place. [2024-10-13 07:08:35,089 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 129 selfloop transitions, 71 changer transitions 0/201 dead transitions. [2024-10-13 07:08:35,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 201 transitions, 2863 flow [2024-10-13 07:08:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:08:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:08:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 129 transitions. [2024-10-13 07:08:35,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-10-13 07:08:35,091 INFO L175 Difference]: Start difference. First operand has 152 places, 158 transitions, 2052 flow. Second operand 17 states and 129 transitions. [2024-10-13 07:08:35,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 201 transitions, 2863 flow [2024-10-13 07:08:35,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 201 transitions, 2630 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-10-13 07:08:35,126 INFO L231 Difference]: Finished difference. Result has 159 places, 177 transitions, 2327 flow [2024-10-13 07:08:35,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2327, PETRI_PLACES=159, PETRI_TRANSITIONS=177} [2024-10-13 07:08:35,126 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 139 predicate places. [2024-10-13 07:08:35,126 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 177 transitions, 2327 flow [2024-10-13 07:08:35,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:35,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:35,127 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:35,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:35,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-13 07:08:35,328 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:35,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash 725553499, now seen corresponding path program 14 times [2024-10-13 07:08:35,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:35,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584802006] [2024-10-13 07:08:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:35,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:35,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584802006] [2024-10-13 07:08:35,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584802006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:35,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020244445] [2024-10-13 07:08:35,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:35,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:35,440 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) [2024-10-13 07:08:35,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-13 07:08:35,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:35,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:35,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:35,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:35,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:35,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:35,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020244445] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:35,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:35,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929529017] [2024-10-13 07:08:35,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:35,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:35,618 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:35,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 177 transitions, 2327 flow. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:35,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:35,803 INFO L124 PetriNetUnfolderBase]: 341/581 cut-off events. [2024-10-13 07:08:35,803 INFO L125 PetriNetUnfolderBase]: For 7020/7020 co-relation queries the response was YES. [2024-10-13 07:08:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 581 events. 341/581 cut-off events. For 7020/7020 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2370 event pairs, 67 based on Foata normal form. 9/590 useless extension candidates. Maximal degree in co-relation 4172. Up to 386 conditions per place. [2024-10-13 07:08:35,810 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 127 selfloop transitions, 64 changer transitions 4/196 dead transitions. [2024-10-13 07:08:35,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 196 transitions, 2846 flow [2024-10-13 07:08:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:35,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:35,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 97 transitions. [2024-10-13 07:08:35,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-10-13 07:08:35,813 INFO L175 Difference]: Start difference. First operand has 159 places, 177 transitions, 2327 flow. Second operand 12 states and 97 transitions. [2024-10-13 07:08:35,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 196 transitions, 2846 flow [2024-10-13 07:08:35,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 196 transitions, 2544 flow, removed 111 selfloop flow, removed 9 redundant places. [2024-10-13 07:08:35,838 INFO L231 Difference]: Finished difference. Result has 161 places, 173 transitions, 2127 flow [2024-10-13 07:08:35,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2001, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2127, PETRI_PLACES=161, PETRI_TRANSITIONS=173} [2024-10-13 07:08:35,842 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 141 predicate places. [2024-10-13 07:08:35,842 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 173 transitions, 2127 flow [2024-10-13 07:08:35,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:35,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:35,843 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:35,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-13 07:08:36,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 07:08:36,044 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:36,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -489041684, now seen corresponding path program 15 times [2024-10-13 07:08:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886051430] [2024-10-13 07:08:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886051430] [2024-10-13 07:08:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886051430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163155953] [2024-10-13 07:08:36,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:36,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:36,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:36,132 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) [2024-10-13 07:08:36,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-13 07:08:36,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:08:36,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:36,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:36,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163155953] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:36,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:36,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 07:08:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659961457] [2024-10-13 07:08:36,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:36,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:36,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:36,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:36,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:36,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:36,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 173 transitions, 2127 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:36,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:36,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:36,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:36,538 INFO L124 PetriNetUnfolderBase]: 450/748 cut-off events. [2024-10-13 07:08:36,538 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-10-13 07:08:36,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5298 conditions, 748 events. 450/748 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3155 event pairs, 33 based on Foata normal form. 12/760 useless extension candidates. Maximal degree in co-relation 5237. Up to 242 conditions per place. [2024-10-13 07:08:36,544 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 100 selfloop transitions, 154 changer transitions 0/255 dead transitions. [2024-10-13 07:08:36,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 255 transitions, 3583 flow [2024-10-13 07:08:36,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:08:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:08:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 134 transitions. [2024-10-13 07:08:36,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-10-13 07:08:36,545 INFO L175 Difference]: Start difference. First operand has 161 places, 173 transitions, 2127 flow. Second operand 17 states and 134 transitions. [2024-10-13 07:08:36,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 255 transitions, 3583 flow [2024-10-13 07:08:36,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 255 transitions, 3395 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-10-13 07:08:36,574 INFO L231 Difference]: Finished difference. Result has 173 places, 229 transitions, 3281 flow [2024-10-13 07:08:36,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1970, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3281, PETRI_PLACES=173, PETRI_TRANSITIONS=229} [2024-10-13 07:08:36,576 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 153 predicate places. [2024-10-13 07:08:36,576 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 229 transitions, 3281 flow [2024-10-13 07:08:36,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:36,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:36,576 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:36,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-13 07:08:36,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-13 07:08:36,777 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:36,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1498627924, now seen corresponding path program 16 times [2024-10-13 07:08:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:36,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225614719] [2024-10-13 07:08:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:36,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225614719] [2024-10-13 07:08:36,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225614719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:36,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823100534] [2024-10-13 07:08:36,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:36,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:36,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:36,893 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) [2024-10-13 07:08:36,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-13 07:08:36,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:36,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:36,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:36,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:36,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:36,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 07:08:37,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823100534] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:37,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:37,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 07:08:37,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969309915] [2024-10-13 07:08:37,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:37,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:37,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:37,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:37,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 229 transitions, 3281 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:37,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:37,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:37,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:37,372 INFO L124 PetriNetUnfolderBase]: 450/752 cut-off events. [2024-10-13 07:08:37,372 INFO L125 PetriNetUnfolderBase]: For 9907/9907 co-relation queries the response was YES. [2024-10-13 07:08:37,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 752 events. 450/752 cut-off events. For 9907/9907 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3219 event pairs, 51 based on Foata normal form. 4/756 useless extension candidates. Maximal degree in co-relation 5825. Up to 314 conditions per place. [2024-10-13 07:08:37,383 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 118 selfloop transitions, 130 changer transitions 2/251 dead transitions. [2024-10-13 07:08:37,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 251 transitions, 3950 flow [2024-10-13 07:08:37,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:37,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:37,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-10-13 07:08:37,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-13 07:08:37,385 INFO L175 Difference]: Start difference. First operand has 173 places, 229 transitions, 3281 flow. Second operand 14 states and 108 transitions. [2024-10-13 07:08:37,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 251 transitions, 3950 flow [2024-10-13 07:08:37,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 251 transitions, 3615 flow, removed 138 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:37,435 INFO L231 Difference]: Finished difference. Result has 182 places, 229 transitions, 3220 flow [2024-10-13 07:08:37,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3220, PETRI_PLACES=182, PETRI_TRANSITIONS=229} [2024-10-13 07:08:37,437 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 162 predicate places. [2024-10-13 07:08:37,437 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 229 transitions, 3220 flow [2024-10-13 07:08:37,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:37,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:37,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:37,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:37,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:37,639 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:37,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:37,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1306934376, now seen corresponding path program 17 times [2024-10-13 07:08:37,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:37,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288160379] [2024-10-13 07:08:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:37,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:37,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:37,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288160379] [2024-10-13 07:08:37,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288160379] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369167803] [2024-10-13 07:08:37,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:37,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:37,770 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) [2024-10-13 07:08:37,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-13 07:08:37,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:37,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:37,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:37,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:37,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:37,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:37,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369167803] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:37,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:37,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:08:37,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005661860] [2024-10-13 07:08:37,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:37,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:37,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:37,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:37,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 229 transitions, 3220 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:37,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:37,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:37,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:38,205 INFO L124 PetriNetUnfolderBase]: 492/814 cut-off events. [2024-10-13 07:08:38,205 INFO L125 PetriNetUnfolderBase]: For 10454/10454 co-relation queries the response was YES. [2024-10-13 07:08:38,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 814 events. 492/814 cut-off events. For 10454/10454 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3518 event pairs, 52 based on Foata normal form. 4/818 useless extension candidates. Maximal degree in co-relation 6186. Up to 330 conditions per place. [2024-10-13 07:08:38,211 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 131 selfloop transitions, 140 changer transitions 4/276 dead transitions. [2024-10-13 07:08:38,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 276 transitions, 4297 flow [2024-10-13 07:08:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:08:38,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:08:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 111 transitions. [2024-10-13 07:08:38,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-10-13 07:08:38,213 INFO L175 Difference]: Start difference. First operand has 182 places, 229 transitions, 3220 flow. Second operand 15 states and 111 transitions. [2024-10-13 07:08:38,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 276 transitions, 4297 flow [2024-10-13 07:08:38,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 276 transitions, 4008 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-10-13 07:08:38,245 INFO L231 Difference]: Finished difference. Result has 189 places, 250 transitions, 3659 flow [2024-10-13 07:08:38,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3659, PETRI_PLACES=189, PETRI_TRANSITIONS=250} [2024-10-13 07:08:38,246 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 169 predicate places. [2024-10-13 07:08:38,246 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 250 transitions, 3659 flow [2024-10-13 07:08:38,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:38,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:38,247 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:38,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:38,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-10-13 07:08:38,448 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:38,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:38,448 INFO L85 PathProgramCache]: Analyzing trace with hash 252511738, now seen corresponding path program 18 times [2024-10-13 07:08:38,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:38,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719388711] [2024-10-13 07:08:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:38,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719388711] [2024-10-13 07:08:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719388711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:38,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754639781] [2024-10-13 07:08:38,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:38,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:38,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:38,506 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:38,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-13 07:08:38,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 07:08:38,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:38,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:38,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:38,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754639781] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:38,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:38,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:08:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060006344] [2024-10-13 07:08:38,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:38,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:38,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 250 transitions, 3659 flow. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:39,028 INFO L124 PetriNetUnfolderBase]: 587/973 cut-off events. [2024-10-13 07:08:39,028 INFO L125 PetriNetUnfolderBase]: For 14617/14617 co-relation queries the response was YES. [2024-10-13 07:08:39,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 973 events. 587/973 cut-off events. For 14617/14617 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4408 event pairs, 37 based on Foata normal form. 8/981 useless extension candidates. Maximal degree in co-relation 7656. Up to 325 conditions per place. [2024-10-13 07:08:39,037 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 164 selfloop transitions, 171 changer transitions 0/336 dead transitions. [2024-10-13 07:08:39,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 336 transitions, 5346 flow [2024-10-13 07:08:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:08:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:08:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 168 transitions. [2024-10-13 07:08:39,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-10-13 07:08:39,038 INFO L175 Difference]: Start difference. First operand has 189 places, 250 transitions, 3659 flow. Second operand 23 states and 168 transitions. [2024-10-13 07:08:39,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 336 transitions, 5346 flow [2024-10-13 07:08:39,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 336 transitions, 5140 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:39,084 INFO L231 Difference]: Finished difference. Result has 209 places, 300 transitions, 4780 flow [2024-10-13 07:08:39,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=4780, PETRI_PLACES=209, PETRI_TRANSITIONS=300} [2024-10-13 07:08:39,085 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 189 predicate places. [2024-10-13 07:08:39,085 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 300 transitions, 4780 flow [2024-10-13 07:08:39,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:39,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:39,086 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:39,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-13 07:08:39,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:39,290 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:39,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2145919580, now seen corresponding path program 19 times [2024-10-13 07:08:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628153098] [2024-10-13 07:08:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:39,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628153098] [2024-10-13 07:08:39,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628153098] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:39,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365629405] [2024-10-13 07:08:39,345 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:39,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:39,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:39,347 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:39,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-13 07:08:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:39,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:39,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:39,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365629405] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:39,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:39,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:08:39,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460093451] [2024-10-13 07:08:39,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:39,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:39,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:39,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:39,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 300 transitions, 4780 flow. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:39,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:39,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:39,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:39,787 INFO L124 PetriNetUnfolderBase]: 632/1044 cut-off events. [2024-10-13 07:08:39,787 INFO L125 PetriNetUnfolderBase]: For 20399/20399 co-relation queries the response was YES. [2024-10-13 07:08:39,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 1044 events. 632/1044 cut-off events. For 20399/20399 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4774 event pairs, 148 based on Foata normal form. 24/1068 useless extension candidates. Maximal degree in co-relation 8947. Up to 896 conditions per place. [2024-10-13 07:08:39,795 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 293 selfloop transitions, 59 changer transitions 0/353 dead transitions. [2024-10-13 07:08:39,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 353 transitions, 6356 flow [2024-10-13 07:08:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:08:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:08:39,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 145 transitions. [2024-10-13 07:08:39,796 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2024-10-13 07:08:39,796 INFO L175 Difference]: Start difference. First operand has 209 places, 300 transitions, 4780 flow. Second operand 19 states and 145 transitions. [2024-10-13 07:08:39,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 353 transitions, 6356 flow [2024-10-13 07:08:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 353 transitions, 6148 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-10-13 07:08:39,856 INFO L231 Difference]: Finished difference. Result has 230 places, 325 transitions, 5456 flow [2024-10-13 07:08:39,856 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4572, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5456, PETRI_PLACES=230, PETRI_TRANSITIONS=325} [2024-10-13 07:08:39,857 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 210 predicate places. [2024-10-13 07:08:39,857 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 325 transitions, 5456 flow [2024-10-13 07:08:39,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:39,857 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:39,857 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:39,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:40,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,062 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:40,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:40,063 INFO L85 PathProgramCache]: Analyzing trace with hash -915188880, now seen corresponding path program 20 times [2024-10-13 07:08:40,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:40,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450290156] [2024-10-13 07:08:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:40,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450290156] [2024-10-13 07:08:40,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450290156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:40,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283101131] [2024-10-13 07:08:40,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:40,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:40,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:40,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-13 07:08:40,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:40,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:40,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:40,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283101131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:40,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:40,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 07:08:40,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638068063] [2024-10-13 07:08:40,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:40,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:40,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:40,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:40,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:40,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 325 transitions, 5456 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:40,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:40,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:40,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:40,431 INFO L124 PetriNetUnfolderBase]: 660/1099 cut-off events. [2024-10-13 07:08:40,431 INFO L125 PetriNetUnfolderBase]: For 26923/26923 co-relation queries the response was YES. [2024-10-13 07:08:40,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10069 conditions, 1099 events. 660/1099 cut-off events. For 26923/26923 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5150 event pairs, 86 based on Foata normal form. 2/1101 useless extension candidates. Maximal degree in co-relation 9976. Up to 672 conditions per place. [2024-10-13 07:08:40,443 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 246 selfloop transitions, 103 changer transitions 5/355 dead transitions. [2024-10-13 07:08:40,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 355 transitions, 6805 flow [2024-10-13 07:08:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 07:08:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-13 07:08:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2024-10-13 07:08:40,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-10-13 07:08:40,445 INFO L175 Difference]: Start difference. First operand has 230 places, 325 transitions, 5456 flow. Second operand 7 states and 59 transitions. [2024-10-13 07:08:40,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 355 transitions, 6805 flow [2024-10-13 07:08:40,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 355 transitions, 6077 flow, removed 343 selfloop flow, removed 8 redundant places. [2024-10-13 07:08:40,573 INFO L231 Difference]: Finished difference. Result has 232 places, 332 transitions, 5355 flow [2024-10-13 07:08:40,573 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4882, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5355, PETRI_PLACES=232, PETRI_TRANSITIONS=332} [2024-10-13 07:08:40,574 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 212 predicate places. [2024-10-13 07:08:40,574 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 332 transitions, 5355 flow [2024-10-13 07:08:40,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:40,574 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:40,574 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:40,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:40,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,775 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:40,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:40,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1670164999, now seen corresponding path program 21 times [2024-10-13 07:08:40,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:40,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115030502] [2024-10-13 07:08:40,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:40,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115030502] [2024-10-13 07:08:40,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115030502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:40,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254359996] [2024-10-13 07:08:40,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:40,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:40,856 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:40,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-13 07:08:40,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:08:40,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:40,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:40,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:40,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:40,970 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:41,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254359996] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:41,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:41,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-13 07:08:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865085879] [2024-10-13 07:08:41,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:41,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 07:08:41,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:41,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 07:08:41,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-13 07:08:41,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:41,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 332 transitions, 5355 flow. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:41,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:41,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:41,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:41,398 INFO L124 PetriNetUnfolderBase]: 669/1110 cut-off events. [2024-10-13 07:08:41,398 INFO L125 PetriNetUnfolderBase]: For 25977/25977 co-relation queries the response was YES. [2024-10-13 07:08:41,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9852 conditions, 1110 events. 669/1110 cut-off events. For 25977/25977 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5178 event pairs, 19 based on Foata normal form. 4/1114 useless extension candidates. Maximal degree in co-relation 9757. Up to 508 conditions per place. [2024-10-13 07:08:41,408 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 227 selfloop transitions, 140 changer transitions 0/368 dead transitions. [2024-10-13 07:08:41,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 368 transitions, 6635 flow [2024-10-13 07:08:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:08:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:08:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 83 transitions. [2024-10-13 07:08:41,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-10-13 07:08:41,409 INFO L175 Difference]: Start difference. First operand has 232 places, 332 transitions, 5355 flow. Second operand 10 states and 83 transitions. [2024-10-13 07:08:41,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 368 transitions, 6635 flow [2024-10-13 07:08:41,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 368 transitions, 6481 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-10-13 07:08:41,504 INFO L231 Difference]: Finished difference. Result has 238 places, 339 transitions, 5712 flow [2024-10-13 07:08:41,504 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5712, PETRI_PLACES=238, PETRI_TRANSITIONS=339} [2024-10-13 07:08:41,505 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 218 predicate places. [2024-10-13 07:08:41,505 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 339 transitions, 5712 flow [2024-10-13 07:08:41,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:41,505 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:41,505 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:41,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-13 07:08:41,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:41,706 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:41,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash -305310556, now seen corresponding path program 22 times [2024-10-13 07:08:41,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:41,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955813440] [2024-10-13 07:08:41,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:41,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:41,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:41,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955813440] [2024-10-13 07:08:41,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955813440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:41,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367212590] [2024-10-13 07:08:41,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:41,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:41,759 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:41,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-13 07:08:41,812 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:41,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:41,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:41,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:41,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367212590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:41,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:41,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 07:08:41,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634473757] [2024-10-13 07:08:41,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:41,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:41,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:41,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:41,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:41,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:41,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 339 transitions, 5712 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:41,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:41,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:42,185 INFO L124 PetriNetUnfolderBase]: 668/1111 cut-off events. [2024-10-13 07:08:42,186 INFO L125 PetriNetUnfolderBase]: For 27162/27162 co-relation queries the response was YES. [2024-10-13 07:08:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10034 conditions, 1111 events. 668/1111 cut-off events. For 27162/27162 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5205 event pairs, 91 based on Foata normal form. 4/1115 useless extension candidates. Maximal degree in co-relation 9938. Up to 703 conditions per place. [2024-10-13 07:08:42,196 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 234 selfloop transitions, 122 changer transitions 5/362 dead transitions. [2024-10-13 07:08:42,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 362 transitions, 6838 flow [2024-10-13 07:08:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-10-13 07:08:42,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-13 07:08:42,197 INFO L175 Difference]: Start difference. First operand has 238 places, 339 transitions, 5712 flow. Second operand 11 states and 84 transitions. [2024-10-13 07:08:42,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 362 transitions, 6838 flow [2024-10-13 07:08:42,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 362 transitions, 6616 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:42,298 INFO L231 Difference]: Finished difference. Result has 247 places, 341 transitions, 5888 flow [2024-10-13 07:08:42,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5479, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5888, PETRI_PLACES=247, PETRI_TRANSITIONS=341} [2024-10-13 07:08:42,299 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 227 predicate places. [2024-10-13 07:08:42,299 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 341 transitions, 5888 flow [2024-10-13 07:08:42,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:42,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:42,299 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:42,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:42,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-13 07:08:42,504 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:42,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1154278771, now seen corresponding path program 23 times [2024-10-13 07:08:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:42,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715699877] [2024-10-13 07:08:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:42,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715699877] [2024-10-13 07:08:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715699877] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638925693] [2024-10-13 07:08:42,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:42,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:42,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:42,573 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:42,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-13 07:08:42,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:08:42,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:42,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:42,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:42,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:42,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638925693] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:42,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:42,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:42,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142116453] [2024-10-13 07:08:42,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:42,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:42,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:42,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:42,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:42,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:42,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 341 transitions, 5888 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:42,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:42,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:42,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:43,161 INFO L124 PetriNetUnfolderBase]: 698/1153 cut-off events. [2024-10-13 07:08:43,161 INFO L125 PetriNetUnfolderBase]: For 31691/31691 co-relation queries the response was YES. [2024-10-13 07:08:43,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10787 conditions, 1153 events. 698/1153 cut-off events. For 31691/31691 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5418 event pairs, 34 based on Foata normal form. 10/1163 useless extension candidates. Maximal degree in co-relation 10689. Up to 786 conditions per place. [2024-10-13 07:08:43,170 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 286 selfloop transitions, 98 changer transitions 0/385 dead transitions. [2024-10-13 07:08:43,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 385 transitions, 7420 flow [2024-10-13 07:08:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:08:43,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:08:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 122 transitions. [2024-10-13 07:08:43,171 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-10-13 07:08:43,171 INFO L175 Difference]: Start difference. First operand has 247 places, 341 transitions, 5888 flow. Second operand 16 states and 122 transitions. [2024-10-13 07:08:43,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 385 transitions, 7420 flow [2024-10-13 07:08:43,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 385 transitions, 7024 flow, removed 63 selfloop flow, removed 12 redundant places. [2024-10-13 07:08:43,270 INFO L231 Difference]: Finished difference. Result has 254 places, 361 transitions, 6248 flow [2024-10-13 07:08:43,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5498, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6248, PETRI_PLACES=254, PETRI_TRANSITIONS=361} [2024-10-13 07:08:43,270 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2024-10-13 07:08:43,271 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 361 transitions, 6248 flow [2024-10-13 07:08:43,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:43,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:43,271 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:43,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:43,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-13 07:08:43,472 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:43,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:43,472 INFO L85 PathProgramCache]: Analyzing trace with hash -909865905, now seen corresponding path program 24 times [2024-10-13 07:08:43,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:43,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103705146] [2024-10-13 07:08:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:43,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:43,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103705146] [2024-10-13 07:08:43,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103705146] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:43,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428484160] [2024-10-13 07:08:43,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:43,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:43,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:43,526 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:43,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-13 07:08:43,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 07:08:43,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:43,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:43,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:43,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:43,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428484160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:43,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:43,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 07:08:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298179260] [2024-10-13 07:08:43,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:43,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:43,644 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:43,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 361 transitions, 6248 flow. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:43,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:43,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:43,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:44,040 INFO L124 PetriNetUnfolderBase]: 783/1280 cut-off events. [2024-10-13 07:08:44,040 INFO L125 PetriNetUnfolderBase]: For 41666/41666 co-relation queries the response was YES. [2024-10-13 07:08:44,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12581 conditions, 1280 events. 783/1280 cut-off events. For 41666/41666 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6097 event pairs, 38 based on Foata normal form. 8/1288 useless extension candidates. Maximal degree in co-relation 12482. Up to 783 conditions per place. [2024-10-13 07:08:44,053 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 281 selfloop transitions, 150 changer transitions 0/432 dead transitions. [2024-10-13 07:08:44,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 432 transitions, 8604 flow [2024-10-13 07:08:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:08:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:08:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 131 transitions. [2024-10-13 07:08:44,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42810457516339867 [2024-10-13 07:08:44,054 INFO L175 Difference]: Start difference. First operand has 254 places, 361 transitions, 6248 flow. Second operand 17 states and 131 transitions. [2024-10-13 07:08:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 432 transitions, 8604 flow [2024-10-13 07:08:44,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 432 transitions, 7948 flow, removed 263 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:44,263 INFO L231 Difference]: Finished difference. Result has 271 places, 411 transitions, 7409 flow [2024-10-13 07:08:44,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7409, PETRI_PLACES=271, PETRI_TRANSITIONS=411} [2024-10-13 07:08:44,264 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 251 predicate places. [2024-10-13 07:08:44,264 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 411 transitions, 7409 flow [2024-10-13 07:08:44,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:44,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:44,264 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:44,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-13 07:08:44,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-13 07:08:44,469 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:44,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:44,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1089475675, now seen corresponding path program 25 times [2024-10-13 07:08:44,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:44,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086695608] [2024-10-13 07:08:44,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086695608] [2024-10-13 07:08:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086695608] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210359052] [2024-10-13 07:08:44,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:44,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:44,593 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:44,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-13 07:08:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:44,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:44,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:44,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:44,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:44,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:44,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210359052] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:44,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:44,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:44,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76044236] [2024-10-13 07:08:44,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:44,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:44,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:44,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:44,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:44,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 411 transitions, 7409 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:44,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:44,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:45,104 INFO L124 PetriNetUnfolderBase]: 782/1282 cut-off events. [2024-10-13 07:08:45,105 INFO L125 PetriNetUnfolderBase]: For 40185/40185 co-relation queries the response was YES. [2024-10-13 07:08:45,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12624 conditions, 1282 events. 782/1282 cut-off events. For 40185/40185 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6184 event pairs, 47 based on Foata normal form. 6/1288 useless extension candidates. Maximal degree in co-relation 12516. Up to 821 conditions per place. [2024-10-13 07:08:45,120 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 315 selfloop transitions, 112 changer transitions 4/432 dead transitions. [2024-10-13 07:08:45,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 432 transitions, 8531 flow [2024-10-13 07:08:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:08:45,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:08:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 100 transitions. [2024-10-13 07:08:45,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-10-13 07:08:45,121 INFO L175 Difference]: Start difference. First operand has 271 places, 411 transitions, 7409 flow. Second operand 13 states and 100 transitions. [2024-10-13 07:08:45,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 432 transitions, 8531 flow [2024-10-13 07:08:45,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 432 transitions, 7911 flow, removed 303 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:45,310 INFO L231 Difference]: Finished difference. Result has 281 places, 409 transitions, 7017 flow [2024-10-13 07:08:45,311 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6811, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7017, PETRI_PLACES=281, PETRI_TRANSITIONS=409} [2024-10-13 07:08:45,313 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 261 predicate places. [2024-10-13 07:08:45,313 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 409 transitions, 7017 flow [2024-10-13 07:08:45,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:45,313 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:45,314 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:45,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:45,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-13 07:08:45,514 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:45,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1860200650, now seen corresponding path program 26 times [2024-10-13 07:08:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:45,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638103242] [2024-10-13 07:08:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638103242] [2024-10-13 07:08:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638103242] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86994605] [2024-10-13 07:08:45,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:45,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:45,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:45,583 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:45,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-13 07:08:45,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:45,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:45,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:45,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:45,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:45,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86994605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:45,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:45,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662631161] [2024-10-13 07:08:45,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:45,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:45,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:45,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 409 transitions, 7017 flow. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:45,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:45,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:45,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:46,062 INFO L124 PetriNetUnfolderBase]: 823/1336 cut-off events. [2024-10-13 07:08:46,063 INFO L125 PetriNetUnfolderBase]: For 29931/29931 co-relation queries the response was YES. [2024-10-13 07:08:46,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 1336 events. 823/1336 cut-off events. For 29931/29931 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6372 event pairs, 113 based on Foata normal form. 8/1344 useless extension candidates. Maximal degree in co-relation 12285. Up to 854 conditions per place. [2024-10-13 07:08:46,080 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 285 selfloop transitions, 162 changer transitions 3/451 dead transitions. [2024-10-13 07:08:46,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 451 transitions, 8663 flow [2024-10-13 07:08:46,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-10-13 07:08:46,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-10-13 07:08:46,081 INFO L175 Difference]: Start difference. First operand has 281 places, 409 transitions, 7017 flow. Second operand 12 states and 94 transitions. [2024-10-13 07:08:46,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 451 transitions, 8663 flow [2024-10-13 07:08:46,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 451 transitions, 8393 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-10-13 07:08:46,211 INFO L231 Difference]: Finished difference. Result has 280 places, 427 transitions, 7668 flow [2024-10-13 07:08:46,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6714, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7668, PETRI_PLACES=280, PETRI_TRANSITIONS=427} [2024-10-13 07:08:46,212 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 260 predicate places. [2024-10-13 07:08:46,212 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 427 transitions, 7668 flow [2024-10-13 07:08:46,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:46,212 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:46,213 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:46,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-13 07:08:46,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-13 07:08:46,414 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:46,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 919858889, now seen corresponding path program 27 times [2024-10-13 07:08:46,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:46,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488933578] [2024-10-13 07:08:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:46,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488933578] [2024-10-13 07:08:46,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488933578] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:46,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352709311] [2024-10-13 07:08:46,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:46,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:46,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:46,465 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:46,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-13 07:08:46,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:08:46,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:46,514 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:46,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:46,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:46,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:46,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352709311] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:46,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:46,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:08:46,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317222142] [2024-10-13 07:08:46,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:46,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:46,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:46,574 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:46,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 427 transitions, 7668 flow. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:46,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:46,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:46,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:47,068 INFO L124 PetriNetUnfolderBase]: 850/1375 cut-off events. [2024-10-13 07:08:47,068 INFO L125 PetriNetUnfolderBase]: For 32487/32487 co-relation queries the response was YES. [2024-10-13 07:08:47,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13000 conditions, 1375 events. 850/1375 cut-off events. For 32487/32487 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6531 event pairs, 46 based on Foata normal form. 9/1384 useless extension candidates. Maximal degree in co-relation 12888. Up to 801 conditions per place. [2024-10-13 07:08:47,089 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 311 selfloop transitions, 151 changer transitions 9/472 dead transitions. [2024-10-13 07:08:47,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 472 transitions, 9214 flow [2024-10-13 07:08:47,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:08:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:08:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 120 transitions. [2024-10-13 07:08:47,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-10-13 07:08:47,090 INFO L175 Difference]: Start difference. First operand has 280 places, 427 transitions, 7668 flow. Second operand 16 states and 120 transitions. [2024-10-13 07:08:47,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 472 transitions, 9214 flow [2024-10-13 07:08:47,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 472 transitions, 8725 flow, removed 146 selfloop flow, removed 10 redundant places. [2024-10-13 07:08:47,328 INFO L231 Difference]: Finished difference. Result has 287 places, 441 transitions, 7898 flow [2024-10-13 07:08:47,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=7194, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=7898, PETRI_PLACES=287, PETRI_TRANSITIONS=441} [2024-10-13 07:08:47,329 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 267 predicate places. [2024-10-13 07:08:47,329 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 441 transitions, 7898 flow [2024-10-13 07:08:47,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:47,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:47,330 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:47,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:47,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-13 07:08:47,535 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:47,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1082460155, now seen corresponding path program 28 times [2024-10-13 07:08:47,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:47,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245226711] [2024-10-13 07:08:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245226711] [2024-10-13 07:08:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245226711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:47,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780679379] [2024-10-13 07:08:47,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:47,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:47,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:47,609 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:47,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-13 07:08:47,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:47,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:47,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:47,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:47,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780679379] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:47,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-13 07:08:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979339653] [2024-10-13 07:08:47,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:47,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:47,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:47,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 441 transitions, 7898 flow. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:48,357 INFO L124 PetriNetUnfolderBase]: 897/1451 cut-off events. [2024-10-13 07:08:48,357 INFO L125 PetriNetUnfolderBase]: For 32635/32635 co-relation queries the response was YES. [2024-10-13 07:08:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13730 conditions, 1451 events. 897/1451 cut-off events. For 32635/32635 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6994 event pairs, 41 based on Foata normal form. 6/1457 useless extension candidates. Maximal degree in co-relation 13615. Up to 973 conditions per place. [2024-10-13 07:08:48,374 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 352 selfloop transitions, 137 changer transitions 0/490 dead transitions. [2024-10-13 07:08:48,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 490 transitions, 9570 flow [2024-10-13 07:08:48,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:08:48,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:08:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 102 transitions. [2024-10-13 07:08:48,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-10-13 07:08:48,375 INFO L175 Difference]: Start difference. First operand has 287 places, 441 transitions, 7898 flow. Second operand 14 states and 102 transitions. [2024-10-13 07:08:48,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 490 transitions, 9570 flow [2024-10-13 07:08:48,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 490 transitions, 9218 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-10-13 07:08:48,516 INFO L231 Difference]: Finished difference. Result has 292 places, 470 transitions, 8416 flow [2024-10-13 07:08:48,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8416, PETRI_PLACES=292, PETRI_TRANSITIONS=470} [2024-10-13 07:08:48,518 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 272 predicate places. [2024-10-13 07:08:48,518 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 470 transitions, 8416 flow [2024-10-13 07:08:48,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:48,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:48,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:48,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:48,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:48,725 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:48,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash 719625231, now seen corresponding path program 29 times [2024-10-13 07:08:48,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:48,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495682384] [2024-10-13 07:08:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:48,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495682384] [2024-10-13 07:08:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495682384] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185745309] [2024-10-13 07:08:48,820 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:48,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:48,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:48,822 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:48,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-13 07:08:48,879 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:48,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:48,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:48,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:48,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:48,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185745309] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:48,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-13 07:08:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54535461] [2024-10-13 07:08:48,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:48,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:48,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:48,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 470 transitions, 8416 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:48,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:48,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:48,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:49,687 INFO L124 PetriNetUnfolderBase]: 978/1578 cut-off events. [2024-10-13 07:08:49,687 INFO L125 PetriNetUnfolderBase]: For 33615/33615 co-relation queries the response was YES. [2024-10-13 07:08:49,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15008 conditions, 1578 events. 978/1578 cut-off events. For 33615/33615 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7776 event pairs, 42 based on Foata normal form. 6/1584 useless extension candidates. Maximal degree in co-relation 14889. Up to 952 conditions per place. [2024-10-13 07:08:49,704 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 350 selfloop transitions, 194 changer transitions 0/545 dead transitions. [2024-10-13 07:08:49,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 545 transitions, 10594 flow [2024-10-13 07:08:49,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 07:08:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 07:08:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 160 transitions. [2024-10-13 07:08:49,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3864734299516908 [2024-10-13 07:08:49,706 INFO L175 Difference]: Start difference. First operand has 292 places, 470 transitions, 8416 flow. Second operand 23 states and 160 transitions. [2024-10-13 07:08:49,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 545 transitions, 10594 flow [2024-10-13 07:08:49,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 545 transitions, 10259 flow, removed 85 selfloop flow, removed 10 redundant places. [2024-10-13 07:08:49,923 INFO L231 Difference]: Finished difference. Result has 311 places, 517 transitions, 9528 flow [2024-10-13 07:08:49,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=8136, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=9528, PETRI_PLACES=311, PETRI_TRANSITIONS=517} [2024-10-13 07:08:49,925 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 291 predicate places. [2024-10-13 07:08:49,925 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 517 transitions, 9528 flow [2024-10-13 07:08:49,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:49,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:49,925 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:49,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:50,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:50,126 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:50,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1305474036, now seen corresponding path program 30 times [2024-10-13 07:08:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:50,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406040355] [2024-10-13 07:08:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:50,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:50,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:50,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:50,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406040355] [2024-10-13 07:08:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406040355] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100437442] [2024-10-13 07:08:50,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:08:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:50,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:50,177 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:50,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-13 07:08:50,234 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 07:08:50,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:50,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:50,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:50,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:50,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100437442] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:50,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:50,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-13 07:08:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861186485] [2024-10-13 07:08:50,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:50,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 07:08:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 07:08:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-13 07:08:50,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:50,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 517 transitions, 9528 flow. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:50,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:50,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:50,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:50,794 INFO L124 PetriNetUnfolderBase]: 1004/1618 cut-off events. [2024-10-13 07:08:50,794 INFO L125 PetriNetUnfolderBase]: For 39548/39548 co-relation queries the response was YES. [2024-10-13 07:08:50,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15719 conditions, 1618 events. 1004/1618 cut-off events. For 39548/39548 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7986 event pairs, 225 based on Foata normal form. 12/1630 useless extension candidates. Maximal degree in co-relation 15597. Up to 1383 conditions per place. [2024-10-13 07:08:50,810 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 443 selfloop transitions, 112 changer transitions 0/556 dead transitions. [2024-10-13 07:08:50,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 556 transitions, 11169 flow [2024-10-13 07:08:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:08:50,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:08:50,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 112 transitions. [2024-10-13 07:08:50,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-10-13 07:08:50,811 INFO L175 Difference]: Start difference. First operand has 311 places, 517 transitions, 9528 flow. Second operand 15 states and 112 transitions. [2024-10-13 07:08:50,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 556 transitions, 11169 flow [2024-10-13 07:08:50,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 556 transitions, 10973 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-10-13 07:08:50,978 INFO L231 Difference]: Finished difference. Result has 321 places, 535 transitions, 10102 flow [2024-10-13 07:08:50,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9313, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10102, PETRI_PLACES=321, PETRI_TRANSITIONS=535} [2024-10-13 07:08:50,979 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places. [2024-10-13 07:08:50,979 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 535 transitions, 10102 flow [2024-10-13 07:08:50,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 13 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:50,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:50,979 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:50,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-10-13 07:08:51,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-10-13 07:08:51,180 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:51,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:51,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1267573352, now seen corresponding path program 31 times [2024-10-13 07:08:51,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:51,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683311691] [2024-10-13 07:08:51,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:51,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:51,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683311691] [2024-10-13 07:08:51,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683311691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:51,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568462462] [2024-10-13 07:08:51,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:08:51,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:51,231 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:51,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-13 07:08:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:51,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-13 07:08:51,281 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:51,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:51,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568462462] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:51,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:51,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 07:08:51,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170045177] [2024-10-13 07:08:51,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:51,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 07:08:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 07:08:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 07:08:51,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:51,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 535 transitions, 10102 flow. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:51,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:51,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:51,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:51,874 INFO L124 PetriNetUnfolderBase]: 1006/1617 cut-off events. [2024-10-13 07:08:51,875 INFO L125 PetriNetUnfolderBase]: For 41471/41471 co-relation queries the response was YES. [2024-10-13 07:08:51,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16081 conditions, 1617 events. 1006/1617 cut-off events. For 41471/41471 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7979 event pairs, 158 based on Foata normal form. 10/1627 useless extension candidates. Maximal degree in co-relation 15952. Up to 1115 conditions per place. [2024-10-13 07:08:51,889 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 366 selfloop transitions, 195 changer transitions 0/562 dead transitions. [2024-10-13 07:08:51,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 562 transitions, 11482 flow [2024-10-13 07:08:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 07:08:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-13 07:08:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 121 transitions. [2024-10-13 07:08:51,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-10-13 07:08:51,890 INFO L175 Difference]: Start difference. First operand has 321 places, 535 transitions, 10102 flow. Second operand 16 states and 121 transitions. [2024-10-13 07:08:51,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 562 transitions, 11482 flow [2024-10-13 07:08:52,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 562 transitions, 11291 flow, removed 62 selfloop flow, removed 11 redundant places. [2024-10-13 07:08:52,070 INFO L231 Difference]: Finished difference. Result has 325 places, 537 transitions, 10402 flow [2024-10-13 07:08:52,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9812, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10402, PETRI_PLACES=325, PETRI_TRANSITIONS=537} [2024-10-13 07:08:52,070 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 305 predicate places. [2024-10-13 07:08:52,070 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 537 transitions, 10402 flow [2024-10-13 07:08:52,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:52,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:52,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:52,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:52,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:52,272 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:52,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:52,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2061910219, now seen corresponding path program 32 times [2024-10-13 07:08:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:52,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498351309] [2024-10-13 07:08:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:52,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:52,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498351309] [2024-10-13 07:08:52,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498351309] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:52,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770958573] [2024-10-13 07:08:52,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:08:52,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:52,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:52,569 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-13 07:08:52,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:08:52,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:52,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:08:52,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:52,726 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:52,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770958573] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:52,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:52,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 07:08:52,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465110711] [2024-10-13 07:08:52,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:52,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 07:08:52,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:52,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 07:08:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-13 07:08:52,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:52,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 537 transitions, 10402 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:52,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:52,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:52,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:53,654 INFO L124 PetriNetUnfolderBase]: 1180/1970 cut-off events. [2024-10-13 07:08:53,655 INFO L125 PetriNetUnfolderBase]: For 51418/51418 co-relation queries the response was YES. [2024-10-13 07:08:53,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19909 conditions, 1970 events. 1180/1970 cut-off events. For 51418/51418 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10569 event pairs, 27 based on Foata normal form. 2/1972 useless extension candidates. Maximal degree in co-relation 19782. Up to 1506 conditions per place. [2024-10-13 07:08:53,683 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 549 selfloop transitions, 109 changer transitions 12/671 dead transitions. [2024-10-13 07:08:53,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 671 transitions, 13987 flow [2024-10-13 07:08:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:53,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-10-13 07:08:53,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-13 07:08:53,684 INFO L175 Difference]: Start difference. First operand has 325 places, 537 transitions, 10402 flow. Second operand 11 states and 114 transitions. [2024-10-13 07:08:53,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 671 transitions, 13987 flow [2024-10-13 07:08:53,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 671 transitions, 13466 flow, removed 71 selfloop flow, removed 12 redundant places. [2024-10-13 07:08:53,964 INFO L231 Difference]: Finished difference. Result has 332 places, 597 transitions, 11624 flow [2024-10-13 07:08:53,965 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=9959, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11624, PETRI_PLACES=332, PETRI_TRANSITIONS=597} [2024-10-13 07:08:53,965 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 312 predicate places. [2024-10-13 07:08:53,965 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 597 transitions, 11624 flow [2024-10-13 07:08:53,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:53,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:53,965 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:53,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:54,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-13 07:08:54,166 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:54,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1386347853, now seen corresponding path program 33 times [2024-10-13 07:08:54,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:54,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319670819] [2024-10-13 07:08:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:54,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319670819] [2024-10-13 07:08:54,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319670819] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:54,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834297087] [2024-10-13 07:08:54,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:08:54,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:54,447 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:54,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-13 07:08:54,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:08:54,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:54,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:08:54,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:54,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:54,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:54,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834297087] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:54,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:54,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-13 07:08:54,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384761032] [2024-10-13 07:08:54,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:54,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:08:54,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:54,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:08:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:08:54,996 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:54,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 597 transitions, 11624 flow. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:54,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:54,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:54,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:56,141 INFO L124 PetriNetUnfolderBase]: 1185/1987 cut-off events. [2024-10-13 07:08:56,141 INFO L125 PetriNetUnfolderBase]: For 53555/53555 co-relation queries the response was YES. [2024-10-13 07:08:56,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20277 conditions, 1987 events. 1185/1987 cut-off events. For 53555/53555 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10762 event pairs, 25 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 20143. Up to 1644 conditions per place. [2024-10-13 07:08:56,176 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 545 selfloop transitions, 96 changer transitions 13/655 dead transitions. [2024-10-13 07:08:56,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 655 transitions, 13694 flow [2024-10-13 07:08:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:08:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:08:56,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-10-13 07:08:56,177 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-13 07:08:56,177 INFO L175 Difference]: Start difference. First operand has 332 places, 597 transitions, 11624 flow. Second operand 12 states and 110 transitions. [2024-10-13 07:08:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 655 transitions, 13694 flow [2024-10-13 07:08:56,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 655 transitions, 13354 flow, removed 169 selfloop flow, removed 3 redundant places. [2024-10-13 07:08:56,604 INFO L231 Difference]: Finished difference. Result has 344 places, 610 transitions, 11966 flow [2024-10-13 07:08:56,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11322, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11966, PETRI_PLACES=344, PETRI_TRANSITIONS=610} [2024-10-13 07:08:56,605 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 324 predicate places. [2024-10-13 07:08:56,605 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 610 transitions, 11966 flow [2024-10-13 07:08:56,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:56,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:56,606 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:56,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:56,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:56,810 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:56,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash -770088891, now seen corresponding path program 34 times [2024-10-13 07:08:56,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:56,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748867149] [2024-10-13 07:08:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:56,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:57,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748867149] [2024-10-13 07:08:57,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748867149] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:57,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078441782] [2024-10-13 07:08:57,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:08:57,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:57,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:57,022 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:57,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-13 07:08:57,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:08:57,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:57,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:08:57,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:57,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:57,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078441782] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:57,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:57,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 07:08:57,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028501227] [2024-10-13 07:08:57,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:57,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:08:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:08:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:08:57,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:57,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 610 transitions, 11966 flow. Second operand has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:57,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:57,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:57,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:58,019 INFO L124 PetriNetUnfolderBase]: 1171/1954 cut-off events. [2024-10-13 07:08:58,020 INFO L125 PetriNetUnfolderBase]: For 49051/49051 co-relation queries the response was YES. [2024-10-13 07:08:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19809 conditions, 1954 events. 1171/1954 cut-off events. For 49051/49051 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10468 event pairs, 25 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 19671. Up to 1570 conditions per place. [2024-10-13 07:08:58,043 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 537 selfloop transitions, 114 changer transitions 4/656 dead transitions. [2024-10-13 07:08:58,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 656 transitions, 13749 flow [2024-10-13 07:08:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:58,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-10-13 07:08:58,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-10-13 07:08:58,044 INFO L175 Difference]: Start difference. First operand has 344 places, 610 transitions, 11966 flow. Second operand 11 states and 105 transitions. [2024-10-13 07:08:58,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 656 transitions, 13749 flow [2024-10-13 07:08:58,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 656 transitions, 13403 flow, removed 138 selfloop flow, removed 4 redundant places. [2024-10-13 07:08:58,317 INFO L231 Difference]: Finished difference. Result has 351 places, 617 transitions, 12084 flow [2024-10-13 07:08:58,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11640, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12084, PETRI_PLACES=351, PETRI_TRANSITIONS=617} [2024-10-13 07:08:58,318 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 331 predicate places. [2024-10-13 07:08:58,318 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 617 transitions, 12084 flow [2024-10-13 07:08:58,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:58,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:08:58,319 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:08:58,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-13 07:08:58,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-13 07:08:58,520 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:08:58,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:08:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1690331707, now seen corresponding path program 35 times [2024-10-13 07:08:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:08:58,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305069445] [2024-10-13 07:08:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:08:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:08:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:08:58,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:58,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:08:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305069445] [2024-10-13 07:08:58,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305069445] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:08:58,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64876274] [2024-10-13 07:08:58,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:08:58,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:08:58,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:08:58,687 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:08:58,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-13 07:08:58,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:08:58,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:08:58,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:08:58,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:08:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:58,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:08:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:08:58,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64876274] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:08:58,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:08:58,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 07:08:58,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308543218] [2024-10-13 07:08:58,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:08:58,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:08:58,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:08:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:08:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:08:58,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:08:58,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 617 transitions, 12084 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:08:58,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:08:58,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:08:58,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:08:59,900 INFO L124 PetriNetUnfolderBase]: 1169/1944 cut-off events. [2024-10-13 07:08:59,901 INFO L125 PetriNetUnfolderBase]: For 49023/49023 co-relation queries the response was YES. [2024-10-13 07:08:59,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19567 conditions, 1944 events. 1169/1944 cut-off events. For 49023/49023 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10357 event pairs, 25 based on Foata normal form. 2/1946 useless extension candidates. Maximal degree in co-relation 19427. Up to 1509 conditions per place. [2024-10-13 07:08:59,930 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 531 selfloop transitions, 112 changer transitions 11/655 dead transitions. [2024-10-13 07:08:59,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 655 transitions, 13724 flow [2024-10-13 07:08:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:08:59,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:08:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-10-13 07:08:59,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-13 07:08:59,931 INFO L175 Difference]: Start difference. First operand has 351 places, 617 transitions, 12084 flow. Second operand 11 states and 104 transitions. [2024-10-13 07:08:59,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 655 transitions, 13724 flow [2024-10-13 07:09:00,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 655 transitions, 13451 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:00,386 INFO L231 Difference]: Finished difference. Result has 355 places, 616 transitions, 12061 flow [2024-10-13 07:09:00,386 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11817, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12061, PETRI_PLACES=355, PETRI_TRANSITIONS=616} [2024-10-13 07:09:00,387 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 335 predicate places. [2024-10-13 07:09:00,387 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 616 transitions, 12061 flow [2024-10-13 07:09:00,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:00,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:00,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:00,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:00,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-13 07:09:00,588 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:00,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash 907908717, now seen corresponding path program 36 times [2024-10-13 07:09:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633202346] [2024-10-13 07:09:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:00,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633202346] [2024-10-13 07:09:00,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633202346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:00,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833301185] [2024-10-13 07:09:00,933 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:00,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:00,935 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:00,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-13 07:09:00,998 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 07:09:00,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:01,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:01,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:01,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:01,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833301185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:01,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-13 07:09:01,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422566082] [2024-10-13 07:09:01,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:01,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:09:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:09:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:01,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:01,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 616 transitions, 12061 flow. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:01,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:01,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:01,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:02,096 INFO L124 PetriNetUnfolderBase]: 1187/1981 cut-off events. [2024-10-13 07:09:02,096 INFO L125 PetriNetUnfolderBase]: For 51561/51561 co-relation queries the response was YES. [2024-10-13 07:09:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19945 conditions, 1981 events. 1187/1981 cut-off events. For 51561/51561 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10651 event pairs, 35 based on Foata normal form. 1/1982 useless extension candidates. Maximal degree in co-relation 19803. Up to 1786 conditions per place. [2024-10-13 07:09:02,121 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 576 selfloop transitions, 73 changer transitions 4/654 dead transitions. [2024-10-13 07:09:02,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 654 transitions, 13804 flow [2024-10-13 07:09:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:02,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-10-13 07:09:02,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-10-13 07:09:02,123 INFO L175 Difference]: Start difference. First operand has 355 places, 616 transitions, 12061 flow. Second operand 9 states and 80 transitions. [2024-10-13 07:09:02,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 654 transitions, 13804 flow [2024-10-13 07:09:02,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 654 transitions, 13525 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:02,433 INFO L231 Difference]: Finished difference. Result has 357 places, 632 transitions, 12343 flow [2024-10-13 07:09:02,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=11790, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12343, PETRI_PLACES=357, PETRI_TRANSITIONS=632} [2024-10-13 07:09:02,434 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 337 predicate places. [2024-10-13 07:09:02,434 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 632 transitions, 12343 flow [2024-10-13 07:09:02,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 17 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:02,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:02,434 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:02,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:02,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-13 07:09:02,635 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:02,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -809840343, now seen corresponding path program 37 times [2024-10-13 07:09:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746006700] [2024-10-13 07:09:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:02,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:02,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746006700] [2024-10-13 07:09:02,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746006700] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:02,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718093025] [2024-10-13 07:09:02,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:02,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:02,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:02,810 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:02,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-13 07:09:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:02,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:02,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:02,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:03,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718093025] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:03,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:03,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 07:09:03,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907709696] [2024-10-13 07:09:03,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:03,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 07:09:03,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 07:09:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:03,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:03,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 632 transitions, 12343 flow. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:03,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:03,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:03,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:03,943 INFO L124 PetriNetUnfolderBase]: 1227/2047 cut-off events. [2024-10-13 07:09:03,943 INFO L125 PetriNetUnfolderBase]: For 55564/55564 co-relation queries the response was YES. [2024-10-13 07:09:03,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20603 conditions, 2047 events. 1227/2047 cut-off events. For 55564/55564 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 11061 event pairs, 35 based on Foata normal form. 1/2048 useless extension candidates. Maximal degree in co-relation 20459. Up to 1791 conditions per place. [2024-10-13 07:09:03,969 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 583 selfloop transitions, 88 changer transitions 8/680 dead transitions. [2024-10-13 07:09:03,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 680 transitions, 14310 flow [2024-10-13 07:09:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-10-13 07:09:03,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-10-13 07:09:03,971 INFO L175 Difference]: Start difference. First operand has 357 places, 632 transitions, 12343 flow. Second operand 9 states and 86 transitions. [2024-10-13 07:09:03,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 680 transitions, 14310 flow [2024-10-13 07:09:04,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 680 transitions, 14037 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:04,313 INFO L231 Difference]: Finished difference. Result has 362 places, 647 transitions, 12635 flow [2024-10-13 07:09:04,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12078, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12635, PETRI_PLACES=362, PETRI_TRANSITIONS=647} [2024-10-13 07:09:04,314 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 342 predicate places. [2024-10-13 07:09:04,314 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 647 transitions, 12635 flow [2024-10-13 07:09:04,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:04,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:04,314 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:04,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:04,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-10-13 07:09:04,515 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:04,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -887594853, now seen corresponding path program 38 times [2024-10-13 07:09:04,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:04,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692669076] [2024-10-13 07:09:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:04,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:04,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692669076] [2024-10-13 07:09:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692669076] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109422135] [2024-10-13 07:09:04,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:04,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:04,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:04,687 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:04,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-13 07:09:04,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:04,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:04,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:04,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:04,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:05,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109422135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:05,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:05,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 07:09:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878679558] [2024-10-13 07:09:05,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:05,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 07:09:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 07:09:05,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:05,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 647 transitions, 12635 flow. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:05,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:05,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:06,122 INFO L124 PetriNetUnfolderBase]: 1220/2030 cut-off events. [2024-10-13 07:09:06,123 INFO L125 PetriNetUnfolderBase]: For 53489/53489 co-relation queries the response was YES. [2024-10-13 07:09:06,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20353 conditions, 2030 events. 1220/2030 cut-off events. For 53489/53489 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10944 event pairs, 36 based on Foata normal form. 1/2031 useless extension candidates. Maximal degree in co-relation 20208. Up to 1791 conditions per place. [2024-10-13 07:09:06,165 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 578 selfloop transitions, 87 changer transitions 5/671 dead transitions. [2024-10-13 07:09:06,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 671 transitions, 14128 flow [2024-10-13 07:09:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:09:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:09:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-10-13 07:09:06,167 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 07:09:06,167 INFO L175 Difference]: Start difference. First operand has 362 places, 647 transitions, 12635 flow. Second operand 8 states and 78 transitions. [2024-10-13 07:09:06,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 671 transitions, 14128 flow [2024-10-13 07:09:06,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 671 transitions, 13842 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:06,666 INFO L231 Difference]: Finished difference. Result has 363 places, 649 transitions, 12625 flow [2024-10-13 07:09:06,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12353, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12625, PETRI_PLACES=363, PETRI_TRANSITIONS=649} [2024-10-13 07:09:06,667 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 343 predicate places. [2024-10-13 07:09:06,668 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 649 transitions, 12625 flow [2024-10-13 07:09:06,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:06,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:06,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:06,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-10-13 07:09:06,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:06,872 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:06,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash -980023607, now seen corresponding path program 39 times [2024-10-13 07:09:06,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:06,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44760773] [2024-10-13 07:09:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:06,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44760773] [2024-10-13 07:09:07,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44760773] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:07,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448442519] [2024-10-13 07:09:07,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:07,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:07,031 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:07,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-13 07:09:07,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 07:09:07,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:07,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:07,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:07,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:07,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448442519] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:07,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:07,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 07:09:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673613316] [2024-10-13 07:09:07,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:07,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:09:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:09:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:09:07,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:07,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 649 transitions, 12625 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:07,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:07,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:07,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:08,359 INFO L124 PetriNetUnfolderBase]: 1370/2327 cut-off events. [2024-10-13 07:09:08,359 INFO L125 PetriNetUnfolderBase]: For 63702/63702 co-relation queries the response was YES. [2024-10-13 07:09:08,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23369 conditions, 2327 events. 1370/2327 cut-off events. For 63702/63702 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 13299 event pairs, 39 based on Foata normal form. 2/2329 useless extension candidates. Maximal degree in co-relation 23223. Up to 1953 conditions per place. [2024-10-13 07:09:08,389 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 645 selfloop transitions, 116 changer transitions 17/779 dead transitions. [2024-10-13 07:09:08,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 779 transitions, 16429 flow [2024-10-13 07:09:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 07:09:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-13 07:09:08,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-10-13 07:09:08,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-13 07:09:08,394 INFO L175 Difference]: Start difference. First operand has 363 places, 649 transitions, 12625 flow. Second operand 12 states and 112 transitions. [2024-10-13 07:09:08,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 779 transitions, 16429 flow [2024-10-13 07:09:08,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 779 transitions, 16241 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:08,851 INFO L231 Difference]: Finished difference. Result has 378 places, 717 transitions, 14393 flow [2024-10-13 07:09:08,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=12447, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14393, PETRI_PLACES=378, PETRI_TRANSITIONS=717} [2024-10-13 07:09:08,852 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 358 predicate places. [2024-10-13 07:09:08,852 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 717 transitions, 14393 flow [2024-10-13 07:09:08,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:08,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:08,853 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:08,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-10-13 07:09:09,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:09,053 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:09,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:09,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1597194629, now seen corresponding path program 40 times [2024-10-13 07:09:09,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:09,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075735629] [2024-10-13 07:09:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:09,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075735629] [2024-10-13 07:09:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075735629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960873681] [2024-10-13 07:09:09,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:09,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:09,231 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:09,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-13 07:09:09,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:09,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:09,289 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:09,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:09,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960873681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:09,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:09,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-13 07:09:09,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643042375] [2024-10-13 07:09:09,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:09,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-13 07:09:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:09,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-13 07:09:09,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-13 07:09:09,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:09,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 717 transitions, 14393 flow. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:09,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:09,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:09,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:10,523 INFO L124 PetriNetUnfolderBase]: 1383/2353 cut-off events. [2024-10-13 07:09:10,524 INFO L125 PetriNetUnfolderBase]: For 70494/70494 co-relation queries the response was YES. [2024-10-13 07:09:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24345 conditions, 2353 events. 1383/2353 cut-off events. For 70494/70494 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 13488 event pairs, 44 based on Foata normal form. 1/2354 useless extension candidates. Maximal degree in co-relation 24190. Up to 1946 conditions per place. [2024-10-13 07:09:10,554 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 664 selfloop transitions, 113 changer transitions 4/782 dead transitions. [2024-10-13 07:09:10,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 782 transitions, 17078 flow [2024-10-13 07:09:10,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 07:09:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 07:09:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-10-13 07:09:10,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-10-13 07:09:10,555 INFO L175 Difference]: Start difference. First operand has 378 places, 717 transitions, 14393 flow. Second operand 10 states and 101 transitions. [2024-10-13 07:09:10,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 782 transitions, 17078 flow [2024-10-13 07:09:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 782 transitions, 16576 flow, removed 251 selfloop flow, removed 2 redundant places. [2024-10-13 07:09:11,074 INFO L231 Difference]: Finished difference. Result has 386 places, 730 transitions, 14628 flow [2024-10-13 07:09:11,075 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=13919, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14628, PETRI_PLACES=386, PETRI_TRANSITIONS=730} [2024-10-13 07:09:11,075 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 366 predicate places. [2024-10-13 07:09:11,075 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 730 transitions, 14628 flow [2024-10-13 07:09:11,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:11,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:11,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:11,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:11,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-10-13 07:09:11,280 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:11,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 730589701, now seen corresponding path program 41 times [2024-10-13 07:09:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307053653] [2024-10-13 07:09:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:11,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307053653] [2024-10-13 07:09:11,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307053653] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18074991] [2024-10-13 07:09:11,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:11,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:11,486 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:11,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-13 07:09:11,540 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:11,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:11,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:11,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:11,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18074991] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:11,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-13 07:09:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499681134] [2024-10-13 07:09:11,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:11,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:11,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:11,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 730 transitions, 14628 flow. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:11,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:11,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:11,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:12,743 INFO L124 PetriNetUnfolderBase]: 1382/2346 cut-off events. [2024-10-13 07:09:12,743 INFO L125 PetriNetUnfolderBase]: For 66356/66356 co-relation queries the response was YES. [2024-10-13 07:09:12,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23898 conditions, 2346 events. 1382/2346 cut-off events. For 66356/66356 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 13440 event pairs, 43 based on Foata normal form. 1/2347 useless extension candidates. Maximal degree in co-relation 23741. Up to 2065 conditions per place. [2024-10-13 07:09:12,771 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 672 selfloop transitions, 97 changer transitions 4/774 dead transitions. [2024-10-13 07:09:12,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 774 transitions, 16693 flow [2024-10-13 07:09:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-10-13 07:09:12,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-10-13 07:09:12,772 INFO L175 Difference]: Start difference. First operand has 386 places, 730 transitions, 14628 flow. Second operand 11 states and 100 transitions. [2024-10-13 07:09:12,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 774 transitions, 16693 flow [2024-10-13 07:09:13,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 774 transitions, 16344 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-10-13 07:09:13,221 INFO L231 Difference]: Finished difference. Result has 394 places, 739 transitions, 14771 flow [2024-10-13 07:09:13,221 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14287, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14771, PETRI_PLACES=394, PETRI_TRANSITIONS=739} [2024-10-13 07:09:13,222 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 374 predicate places. [2024-10-13 07:09:13,222 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 739 transitions, 14771 flow [2024-10-13 07:09:13,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 15 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:13,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:13,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:13,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:13,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:13,423 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:13,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1519440119, now seen corresponding path program 42 times [2024-10-13 07:09:13,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:13,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593246903] [2024-10-13 07:09:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593246903] [2024-10-13 07:09:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593246903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109988071] [2024-10-13 07:09:13,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:13,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:13,595 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:13,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-13 07:09:13,646 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 07:09:13,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:13,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:13,648 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:13,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:13,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109988071] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:13,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-13 07:09:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370933127] [2024-10-13 07:09:13,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:13,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-13 07:09:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-13 07:09:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-13 07:09:13,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:13,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 739 transitions, 14771 flow. Second operand has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:13,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:13,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:13,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:15,065 INFO L124 PetriNetUnfolderBase]: 1381/2337 cut-off events. [2024-10-13 07:09:15,065 INFO L125 PetriNetUnfolderBase]: For 63082/63082 co-relation queries the response was YES. [2024-10-13 07:09:15,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23809 conditions, 2337 events. 1381/2337 cut-off events. For 63082/63082 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 13325 event pairs, 42 based on Foata normal form. 2/2339 useless extension candidates. Maximal degree in co-relation 23649. Up to 1946 conditions per place. [2024-10-13 07:09:15,101 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 653 selfloop transitions, 111 changer transitions 11/776 dead transitions. [2024-10-13 07:09:15,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 776 transitions, 16716 flow [2024-10-13 07:09:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 07:09:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 07:09:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-10-13 07:09:15,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-10-13 07:09:15,103 INFO L175 Difference]: Start difference. First operand has 394 places, 739 transitions, 14771 flow. Second operand 11 states and 101 transitions. [2024-10-13 07:09:15,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 776 transitions, 16716 flow [2024-10-13 07:09:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 776 transitions, 16425 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:15,563 INFO L231 Difference]: Finished difference. Result has 400 places, 738 transitions, 14768 flow [2024-10-13 07:09:15,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14486, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14768, PETRI_PLACES=400, PETRI_TRANSITIONS=738} [2024-10-13 07:09:15,565 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 380 predicate places. [2024-10-13 07:09:15,565 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 738 transitions, 14768 flow [2024-10-13 07:09:15,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:15,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:15,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:15,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-10-13 07:09:15,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-10-13 07:09:15,766 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:15,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:15,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2012377285, now seen corresponding path program 43 times [2024-10-13 07:09:15,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:15,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203199997] [2024-10-13 07:09:15,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:15,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:15,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203199997] [2024-10-13 07:09:15,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203199997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611087455] [2024-10-13 07:09:15,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:15,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:15,944 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:15,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-13 07:09:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:16,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:16,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:16,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:16,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611087455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:16,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:16,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-13 07:09:16,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633662382] [2024-10-13 07:09:16,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:16,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 07:09:16,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:16,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 07:09:16,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-13 07:09:16,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:16,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 738 transitions, 14768 flow. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:16,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:16,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:17,360 INFO L124 PetriNetUnfolderBase]: 1409/2395 cut-off events. [2024-10-13 07:09:17,361 INFO L125 PetriNetUnfolderBase]: For 68188/68188 co-relation queries the response was YES. [2024-10-13 07:09:17,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24396 conditions, 2395 events. 1409/2395 cut-off events. For 68188/68188 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 13799 event pairs, 40 based on Foata normal form. 1/2396 useless extension candidates. Maximal degree in co-relation 24233. Up to 2168 conditions per place. [2024-10-13 07:09:17,403 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 700 selfloop transitions, 77 changer transitions 4/782 dead transitions. [2024-10-13 07:09:17,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 782 transitions, 16949 flow [2024-10-13 07:09:17,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-13 07:09:17,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:09:17,405 INFO L175 Difference]: Start difference. First operand has 400 places, 738 transitions, 14768 flow. Second operand 9 states and 81 transitions. [2024-10-13 07:09:17,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 782 transitions, 16949 flow [2024-10-13 07:09:18,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 782 transitions, 16612 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:18,049 INFO L231 Difference]: Finished difference. Result has 402 places, 758 transitions, 15154 flow [2024-10-13 07:09:18,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14445, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15154, PETRI_PLACES=402, PETRI_TRANSITIONS=758} [2024-10-13 07:09:18,051 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 382 predicate places. [2024-10-13 07:09:18,051 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 758 transitions, 15154 flow [2024-10-13 07:09:18,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:18,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:18,051 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:18,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:18,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:18,256 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:18,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1092134469, now seen corresponding path program 44 times [2024-10-13 07:09:18,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:18,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663905669] [2024-10-13 07:09:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663905669] [2024-10-13 07:09:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663905669] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671506413] [2024-10-13 07:09:18,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:18,478 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:18,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-13 07:09:18,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:18,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:18,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:18,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:18,675 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:18,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671506413] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:18,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:18,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 07:09:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80030567] [2024-10-13 07:09:18,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:18,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 07:09:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 07:09:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:18,881 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:18,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 758 transitions, 15154 flow. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:18,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:18,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:20,061 INFO L124 PetriNetUnfolderBase]: 1453/2465 cut-off events. [2024-10-13 07:09:20,062 INFO L125 PetriNetUnfolderBase]: For 71496/71496 co-relation queries the response was YES. [2024-10-13 07:09:20,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25133 conditions, 2465 events. 1453/2465 cut-off events. For 71496/71496 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 14259 event pairs, 42 based on Foata normal form. 1/2466 useless extension candidates. Maximal degree in co-relation 24968. Up to 2174 conditions per place. [2024-10-13 07:09:20,098 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 709 selfloop transitions, 95 changer transitions 5/810 dead transitions. [2024-10-13 07:09:20,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 810 transitions, 17573 flow [2024-10-13 07:09:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 07:09:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 07:09:20,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-10-13 07:09:20,099 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-13 07:09:20,099 INFO L175 Difference]: Start difference. First operand has 402 places, 758 transitions, 15154 flow. Second operand 8 states and 82 transitions. [2024-10-13 07:09:20,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 810 transitions, 17573 flow [2024-10-13 07:09:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 810 transitions, 17253 flow, removed 110 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:20,801 INFO L231 Difference]: Finished difference. Result has 406 places, 778 transitions, 15611 flow [2024-10-13 07:09:20,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=14840, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15611, PETRI_PLACES=406, PETRI_TRANSITIONS=778} [2024-10-13 07:09:20,802 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 386 predicate places. [2024-10-13 07:09:20,802 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 778 transitions, 15611 flow [2024-10-13 07:09:20,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:20,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:20,803 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:20,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-10-13 07:09:21,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:21,007 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:21,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:21,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1014379959, now seen corresponding path program 45 times [2024-10-13 07:09:21,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:21,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88028317] [2024-10-13 07:09:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:21,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:21,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:21,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88028317] [2024-10-13 07:09:21,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88028317] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:21,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913409742] [2024-10-13 07:09:21,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:21,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:21,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:21,171 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:21,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-13 07:09:21,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:09:21,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:21,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-13 07:09:21,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:21,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913409742] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:21,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:21,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-13 07:09:21,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712787759] [2024-10-13 07:09:21,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:21,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-13 07:09:21,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-13 07:09:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-13 07:09:21,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:21,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 778 transitions, 15611 flow. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:21,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:21,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:21,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:22,704 INFO L124 PetriNetUnfolderBase]: 1450/2456 cut-off events. [2024-10-13 07:09:22,705 INFO L125 PetriNetUnfolderBase]: For 69450/69450 co-relation queries the response was YES. [2024-10-13 07:09:22,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24906 conditions, 2456 events. 1450/2456 cut-off events. For 69450/69450 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 14169 event pairs, 41 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 24739. Up to 2174 conditions per place. [2024-10-13 07:09:22,749 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 707 selfloop transitions, 93 changer transitions 6/807 dead transitions. [2024-10-13 07:09:22,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 807 transitions, 17458 flow [2024-10-13 07:09:22,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:22,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-13 07:09:22,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-10-13 07:09:22,751 INFO L175 Difference]: Start difference. First operand has 406 places, 778 transitions, 15611 flow. Second operand 9 states and 85 transitions. [2024-10-13 07:09:22,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 807 transitions, 17458 flow [2024-10-13 07:09:23,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 807 transitions, 17167 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:23,446 INFO L231 Difference]: Finished difference. Result has 410 places, 780 transitions, 15628 flow [2024-10-13 07:09:23,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=15324, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15628, PETRI_PLACES=410, PETRI_TRANSITIONS=780} [2024-10-13 07:09:23,447 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2024-10-13 07:09:23,448 INFO L471 AbstractCegarLoop]: Abstraction has has 410 places, 780 transitions, 15628 flow [2024-10-13 07:09:23,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:23,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:23,448 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:23,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-13 07:09:23,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-13 07:09:23,653 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:23,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash -26371860, now seen corresponding path program 46 times [2024-10-13 07:09:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:23,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793167249] [2024-10-13 07:09:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:23,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:23,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:23,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793167249] [2024-10-13 07:09:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793167249] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:23,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62081861] [2024-10-13 07:09:23,744 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:23,746 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:23,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-13 07:09:23,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:23,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:23,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:23,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:23,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:23,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62081861] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:23,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:23,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 07:09:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421164373] [2024-10-13 07:09:23,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:23,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:09:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:09:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:09:23,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:23,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 780 transitions, 15628 flow. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:23,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:23,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:23,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:25,261 INFO L124 PetriNetUnfolderBase]: 1765/3012 cut-off events. [2024-10-13 07:09:25,262 INFO L125 PetriNetUnfolderBase]: For 85581/85581 co-relation queries the response was YES. [2024-10-13 07:09:25,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30089 conditions, 3012 events. 1765/3012 cut-off events. For 85581/85581 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 18068 event pairs, 311 based on Foata normal form. 3/3015 useless extension candidates. Maximal degree in co-relation 29921. Up to 1783 conditions per place. [2024-10-13 07:09:25,323 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 730 selfloop transitions, 247 changer transitions 12/990 dead transitions. [2024-10-13 07:09:25,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 990 transitions, 21490 flow [2024-10-13 07:09:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 07:09:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 07:09:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-13 07:09:25,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 07:09:25,325 INFO L175 Difference]: Start difference. First operand has 410 places, 780 transitions, 15628 flow. Second operand 9 states and 81 transitions. [2024-10-13 07:09:25,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 990 transitions, 21490 flow [2024-10-13 07:09:26,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 990 transitions, 21260 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-13 07:09:26,253 INFO L231 Difference]: Finished difference. Result has 416 places, 869 transitions, 18034 flow [2024-10-13 07:09:26,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=15462, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18034, PETRI_PLACES=416, PETRI_TRANSITIONS=869} [2024-10-13 07:09:26,254 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 396 predicate places. [2024-10-13 07:09:26,254 INFO L471 AbstractCegarLoop]: Abstraction has has 416 places, 869 transitions, 18034 flow [2024-10-13 07:09:26,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 14 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:26,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:26,254 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:26,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:26,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-13 07:09:26,455 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:26,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash 604922573, now seen corresponding path program 47 times [2024-10-13 07:09:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:26,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276588604] [2024-10-13 07:09:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:26,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276588604] [2024-10-13 07:09:26,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276588604] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112549317] [2024-10-13 07:09:26,531 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:26,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:26,533 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:26,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-13 07:09:26,586 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:09:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:26,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:26,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:26,620 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:26,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112549317] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:26,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:26,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-13 07:09:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791058814] [2024-10-13 07:09:26,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:26,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:09:26,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:09:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:09:26,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:26,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 869 transitions, 18034 flow. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:26,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:26,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:26,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:27,874 INFO L124 PetriNetUnfolderBase]: 1911/3250 cut-off events. [2024-10-13 07:09:27,874 INFO L125 PetriNetUnfolderBase]: For 98754/98754 co-relation queries the response was YES. [2024-10-13 07:09:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33326 conditions, 3250 events. 1911/3250 cut-off events. For 98754/98754 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 19712 event pairs, 90 based on Foata normal form. 13/3263 useless extension candidates. Maximal degree in co-relation 33155. Up to 1049 conditions per place. [2024-10-13 07:09:27,920 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 646 selfloop transitions, 426 changer transitions 0/1073 dead transitions. [2024-10-13 07:09:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1073 transitions, 23903 flow [2024-10-13 07:09:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 07:09:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 07:09:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-13 07:09:27,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-10-13 07:09:27,921 INFO L175 Difference]: Start difference. First operand has 416 places, 869 transitions, 18034 flow. Second operand 13 states and 113 transitions. [2024-10-13 07:09:27,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1073 transitions, 23903 flow [2024-10-13 07:09:28,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1073 transitions, 23513 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-10-13 07:09:28,836 INFO L231 Difference]: Finished difference. Result has 425 places, 936 transitions, 20325 flow [2024-10-13 07:09:28,837 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=17648, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=869, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=359, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20325, PETRI_PLACES=425, PETRI_TRANSITIONS=936} [2024-10-13 07:09:28,837 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 405 predicate places. [2024-10-13 07:09:28,837 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 936 transitions, 20325 flow [2024-10-13 07:09:28,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:28,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:28,838 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:28,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-13 07:09:29,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-10-13 07:09:29,039 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:29,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash 558158597, now seen corresponding path program 48 times [2024-10-13 07:09:29,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:29,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347470457] [2024-10-13 07:09:29,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:29,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347470457] [2024-10-13 07:09:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347470457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345731762] [2024-10-13 07:09:29,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:29,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:29,111 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:29,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-13 07:09:29,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-13 07:09:29,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:29,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:29,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:29,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:29,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345731762] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:29,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159945534] [2024-10-13 07:09:29,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:29,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:29,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:29,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 936 transitions, 20325 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:29,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:29,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:29,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:30,965 INFO L124 PetriNetUnfolderBase]: 2081/3517 cut-off events. [2024-10-13 07:09:30,965 INFO L125 PetriNetUnfolderBase]: For 124819/124819 co-relation queries the response was YES. [2024-10-13 07:09:30,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38026 conditions, 3517 events. 2081/3517 cut-off events. For 124819/124819 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 21564 event pairs, 147 based on Foata normal form. 26/3543 useless extension candidates. Maximal degree in co-relation 37852. Up to 1262 conditions per place. [2024-10-13 07:09:31,016 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 539 selfloop transitions, 530 changer transitions 0/1070 dead transitions. [2024-10-13 07:09:31,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1070 transitions, 25482 flow [2024-10-13 07:09:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 07:09:31,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 07:09:31,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 186 transitions. [2024-10-13 07:09:31,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-10-13 07:09:31,017 INFO L175 Difference]: Start difference. First operand has 425 places, 936 transitions, 20325 flow. Second operand 24 states and 186 transitions. [2024-10-13 07:09:31,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1070 transitions, 25482 flow [2024-10-13 07:09:31,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1070 transitions, 24981 flow, removed 160 selfloop flow, removed 3 redundant places. [2024-10-13 07:09:31,892 INFO L231 Difference]: Finished difference. Result has 451 places, 1029 transitions, 24098 flow [2024-10-13 07:09:31,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=19996, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=936, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=453, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=24098, PETRI_PLACES=451, PETRI_TRANSITIONS=1029} [2024-10-13 07:09:31,893 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 431 predicate places. [2024-10-13 07:09:31,893 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 1029 transitions, 24098 flow [2024-10-13 07:09:31,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:31,894 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:31,894 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:31,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-10-13 07:09:32,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:32,094 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:32,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -16651817, now seen corresponding path program 49 times [2024-10-13 07:09:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:32,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588389006] [2024-10-13 07:09:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:32,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:32,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588389006] [2024-10-13 07:09:32,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588389006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:32,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352693020] [2024-10-13 07:09:32,157 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:32,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:32,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:32,158 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:32,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-13 07:09:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:32,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:32,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:32,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:32,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:32,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352693020] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:32,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:32,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:32,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928421735] [2024-10-13 07:09:32,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:32,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:32,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:32,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:32,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:32,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:32,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 1029 transitions, 24098 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:32,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:32,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:32,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:33,791 INFO L124 PetriNetUnfolderBase]: 2079/3523 cut-off events. [2024-10-13 07:09:33,792 INFO L125 PetriNetUnfolderBase]: For 127792/127792 co-relation queries the response was YES. [2024-10-13 07:09:33,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39432 conditions, 3523 events. 2079/3523 cut-off events. For 127792/127792 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 21804 event pairs, 226 based on Foata normal form. 8/3531 useless extension candidates. Maximal degree in co-relation 39252. Up to 1341 conditions per place. [2024-10-13 07:09:33,846 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 597 selfloop transitions, 462 changer transitions 4/1064 dead transitions. [2024-10-13 07:09:33,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1064 transitions, 26477 flow [2024-10-13 07:09:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:09:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:09:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2024-10-13 07:09:33,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-10-13 07:09:33,851 INFO L175 Difference]: Start difference. First operand has 451 places, 1029 transitions, 24098 flow. Second operand 19 states and 144 transitions. [2024-10-13 07:09:33,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1064 transitions, 26477 flow [2024-10-13 07:09:34,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1064 transitions, 24540 flow, removed 737 selfloop flow, removed 11 redundant places. [2024-10-13 07:09:34,788 INFO L231 Difference]: Finished difference. Result has 460 places, 1027 transitions, 23091 flow [2024-10-13 07:09:34,789 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=22162, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=461, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23091, PETRI_PLACES=460, PETRI_TRANSITIONS=1027} [2024-10-13 07:09:34,789 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 440 predicate places. [2024-10-13 07:09:34,789 INFO L471 AbstractCegarLoop]: Abstraction has has 460 places, 1027 transitions, 23091 flow [2024-10-13 07:09:34,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:34,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:34,789 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:34,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-10-13 07:09:34,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-10-13 07:09:34,990 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:34,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:34,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1262768003, now seen corresponding path program 50 times [2024-10-13 07:09:34,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:34,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399422365] [2024-10-13 07:09:34,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:34,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:35,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:35,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399422365] [2024-10-13 07:09:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399422365] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:35,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434934305] [2024-10-13 07:09:35,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:35,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:35,079 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:35,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-13 07:09:35,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:35,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:35,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:35,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:35,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:35,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:35,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434934305] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:35,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:35,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-13 07:09:35,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3624574] [2024-10-13 07:09:35,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:35,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:09:35,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:09:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:09:35,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:35,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 1027 transitions, 23091 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:35,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:35,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:35,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:36,735 INFO L124 PetriNetUnfolderBase]: 2131/3613 cut-off events. [2024-10-13 07:09:36,735 INFO L125 PetriNetUnfolderBase]: For 100990/100990 co-relation queries the response was YES. [2024-10-13 07:09:36,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38223 conditions, 3613 events. 2131/3613 cut-off events. For 100990/100990 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 22345 event pairs, 192 based on Foata normal form. 10/3623 useless extension candidates. Maximal degree in co-relation 38043. Up to 1628 conditions per place. [2024-10-13 07:09:36,789 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 689 selfloop transitions, 406 changer transitions 0/1096 dead transitions. [2024-10-13 07:09:36,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1096 transitions, 26133 flow [2024-10-13 07:09:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:09:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:09:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2024-10-13 07:09:36,790 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-10-13 07:09:36,790 INFO L175 Difference]: Start difference. First operand has 460 places, 1027 transitions, 23091 flow. Second operand 19 states and 144 transitions. [2024-10-13 07:09:36,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1096 transitions, 26133 flow [2024-10-13 07:09:37,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1096 transitions, 25345 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-10-13 07:09:37,574 INFO L231 Difference]: Finished difference. Result has 467 places, 1053 transitions, 23860 flow [2024-10-13 07:09:37,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=22338, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=381, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=23860, PETRI_PLACES=467, PETRI_TRANSITIONS=1053} [2024-10-13 07:09:37,576 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 447 predicate places. [2024-10-13 07:09:37,576 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 1053 transitions, 23860 flow [2024-10-13 07:09:37,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:37,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:37,576 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:37,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:37,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:37,777 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:37,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 684133252, now seen corresponding path program 51 times [2024-10-13 07:09:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156522796] [2024-10-13 07:09:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:37,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156522796] [2024-10-13 07:09:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156522796] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141669994] [2024-10-13 07:09:37,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 07:09:37,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:37,855 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:37,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-13 07:09:37,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 07:09:37,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:37,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:37,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:37,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141669994] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:38,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:38,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-13 07:09:38,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802629504] [2024-10-13 07:09:38,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:38,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:09:38,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:38,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:09:38,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:09:38,003 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:38,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 1053 transitions, 23860 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:38,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:38,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:38,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:39,793 INFO L124 PetriNetUnfolderBase]: 2151/3659 cut-off events. [2024-10-13 07:09:39,793 INFO L125 PetriNetUnfolderBase]: For 114850/114850 co-relation queries the response was YES. [2024-10-13 07:09:39,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39197 conditions, 3659 events. 2151/3659 cut-off events. For 114850/114850 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 22740 event pairs, 433 based on Foata normal form. 12/3671 useless extension candidates. Maximal degree in co-relation 39013. Up to 2601 conditions per place. [2024-10-13 07:09:39,847 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 859 selfloop transitions, 301 changer transitions 11/1172 dead transitions. [2024-10-13 07:09:39,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1172 transitions, 28606 flow [2024-10-13 07:09:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 07:09:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 07:09:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-10-13 07:09:39,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-10-13 07:09:39,848 INFO L175 Difference]: Start difference. First operand has 467 places, 1053 transitions, 23860 flow. Second operand 15 states and 119 transitions. [2024-10-13 07:09:39,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1172 transitions, 28606 flow [2024-10-13 07:09:40,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1172 transitions, 28240 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-10-13 07:09:40,792 INFO L231 Difference]: Finished difference. Result has 480 places, 1077 transitions, 25010 flow [2024-10-13 07:09:40,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=23494, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=758, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=25010, PETRI_PLACES=480, PETRI_TRANSITIONS=1077} [2024-10-13 07:09:40,797 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 460 predicate places. [2024-10-13 07:09:40,797 INFO L471 AbstractCegarLoop]: Abstraction has has 480 places, 1077 transitions, 25010 flow [2024-10-13 07:09:40,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:40,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:40,798 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:40,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:40,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:40,999 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:40,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -688044373, now seen corresponding path program 52 times [2024-10-13 07:09:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350564100] [2024-10-13 07:09:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:41,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:41,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350564100] [2024-10-13 07:09:41,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350564100] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:41,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775297350] [2024-10-13 07:09:41,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 07:09:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:41,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:41,082 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:41,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-13 07:09:41,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 07:09:41,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:41,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:41,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:41,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775297350] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:41,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163847552] [2024-10-13 07:09:41,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:41,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:41,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:41,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 1077 transitions, 25010 flow. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:41,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:41,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:41,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:43,296 INFO L124 PetriNetUnfolderBase]: 2214/3766 cut-off events. [2024-10-13 07:09:43,297 INFO L125 PetriNetUnfolderBase]: For 120983/120983 co-relation queries the response was YES. [2024-10-13 07:09:43,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40728 conditions, 3766 events. 2214/3766 cut-off events. For 120983/120983 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 23566 event pairs, 176 based on Foata normal form. 12/3778 useless extension candidates. Maximal degree in co-relation 40539. Up to 1533 conditions per place. [2024-10-13 07:09:43,372 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 668 selfloop transitions, 487 changer transitions 0/1156 dead transitions. [2024-10-13 07:09:43,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1156 transitions, 28353 flow [2024-10-13 07:09:43,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 07:09:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 07:09:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 158 transitions. [2024-10-13 07:09:43,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-10-13 07:09:43,374 INFO L175 Difference]: Start difference. First operand has 480 places, 1077 transitions, 25010 flow. Second operand 21 states and 158 transitions. [2024-10-13 07:09:43,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1156 transitions, 28353 flow [2024-10-13 07:09:44,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1156 transitions, 27092 flow, removed 192 selfloop flow, removed 11 redundant places. [2024-10-13 07:09:44,517 INFO L231 Difference]: Finished difference. Result has 493 places, 1116 transitions, 25831 flow [2024-10-13 07:09:44,518 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=23759, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=449, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=25831, PETRI_PLACES=493, PETRI_TRANSITIONS=1116} [2024-10-13 07:09:44,518 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 473 predicate places. [2024-10-13 07:09:44,518 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 1116 transitions, 25831 flow [2024-10-13 07:09:44,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:44,519 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:44,519 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:44,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:44,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:44,720 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:44,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash 569731480, now seen corresponding path program 53 times [2024-10-13 07:09:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736414278] [2024-10-13 07:09:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:44,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736414278] [2024-10-13 07:09:44,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736414278] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:44,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143372415] [2024-10-13 07:09:44,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 07:09:44,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:44,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:44,807 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:44,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-13 07:09:44,874 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 07:09:44,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:44,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:44,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:44,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:44,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143372415] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:44,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752413338] [2024-10-13 07:09:44,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:44,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:44,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:44,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1116 transitions, 25831 flow. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:44,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:44,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:44,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:46,775 INFO L124 PetriNetUnfolderBase]: 2435/4065 cut-off events. [2024-10-13 07:09:46,775 INFO L125 PetriNetUnfolderBase]: For 133147/133147 co-relation queries the response was YES. [2024-10-13 07:09:46,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44665 conditions, 4065 events. 2435/4065 cut-off events. For 133147/133147 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 25150 event pairs, 459 based on Foata normal form. 24/4089 useless extension candidates. Maximal degree in co-relation 44471. Up to 2811 conditions per place. [2024-10-13 07:09:46,832 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 823 selfloop transitions, 515 changer transitions 1/1340 dead transitions. [2024-10-13 07:09:46,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1340 transitions, 33196 flow [2024-10-13 07:09:46,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 07:09:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 07:09:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 203 transitions. [2024-10-13 07:09:46,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-10-13 07:09:46,833 INFO L175 Difference]: Start difference. First operand has 493 places, 1116 transitions, 25831 flow. Second operand 28 states and 203 transitions. [2024-10-13 07:09:46,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1340 transitions, 33196 flow [2024-10-13 07:09:47,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1340 transitions, 32779 flow, removed 95 selfloop flow, removed 9 redundant places. [2024-10-13 07:09:47,815 INFO L231 Difference]: Finished difference. Result has 517 places, 1253 transitions, 30357 flow [2024-10-13 07:09:47,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=25058, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=389, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=30357, PETRI_PLACES=517, PETRI_TRANSITIONS=1253} [2024-10-13 07:09:47,816 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 497 predicate places. [2024-10-13 07:09:47,817 INFO L471 AbstractCegarLoop]: Abstraction has has 517 places, 1253 transitions, 30357 flow [2024-10-13 07:09:47,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:47,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:47,817 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:47,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:48,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:48,018 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:48,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1852308518, now seen corresponding path program 54 times [2024-10-13 07:09:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:48,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143703285] [2024-10-13 07:09:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:48,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:48,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:48,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143703285] [2024-10-13 07:09:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143703285] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:48,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394661144] [2024-10-13 07:09:48,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 07:09:48,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:48,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:48,083 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:48,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-13 07:09:48,134 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 07:09:48,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:48,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:48,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:48,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394661144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:48,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:48,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:48,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417152312] [2024-10-13 07:09:48,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:48,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:48,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:48,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 1253 transitions, 30357 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:48,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:48,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:48,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:50,557 INFO L124 PetriNetUnfolderBase]: 2412/4028 cut-off events. [2024-10-13 07:09:50,558 INFO L125 PetriNetUnfolderBase]: For 133352/133352 co-relation queries the response was YES. [2024-10-13 07:09:50,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46116 conditions, 4028 events. 2412/4028 cut-off events. For 133352/133352 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 24970 event pairs, 445 based on Foata normal form. 21/4049 useless extension candidates. Maximal degree in co-relation 45916. Up to 2739 conditions per place. [2024-10-13 07:09:50,646 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 834 selfloop transitions, 479 changer transitions 10/1324 dead transitions. [2024-10-13 07:09:50,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1324 transitions, 34287 flow [2024-10-13 07:09:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 07:09:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 07:09:50,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 147 transitions. [2024-10-13 07:09:50,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-10-13 07:09:50,648 INFO L175 Difference]: Start difference. First operand has 517 places, 1253 transitions, 30357 flow. Second operand 19 states and 147 transitions. [2024-10-13 07:09:50,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 1324 transitions, 34287 flow [2024-10-13 07:09:52,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1324 transitions, 32829 flow, removed 548 selfloop flow, removed 10 redundant places. [2024-10-13 07:09:52,387 INFO L231 Difference]: Finished difference. Result has 526 places, 1237 transitions, 29571 flow [2024-10-13 07:09:52,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28778, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=29571, PETRI_PLACES=526, PETRI_TRANSITIONS=1237} [2024-10-13 07:09:52,388 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 506 predicate places. [2024-10-13 07:09:52,389 INFO L471 AbstractCegarLoop]: Abstraction has has 526 places, 1237 transitions, 29571 flow [2024-10-13 07:09:52,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:52,389 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:52,389 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:52,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-10-13 07:09:52,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-13 07:09:52,594 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:52,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 373862872, now seen corresponding path program 55 times [2024-10-13 07:09:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381193191] [2024-10-13 07:09:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381193191] [2024-10-13 07:09:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381193191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:52,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69494202] [2024-10-13 07:09:52,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 07:09:52,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:52,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:52,684 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:52,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-13 07:09:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:52,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:52,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:52,785 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:52,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:52,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69494202] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:52,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:52,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 07:09:52,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770935662] [2024-10-13 07:09:52,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:52,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 07:09:52,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:52,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 07:09:52,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-13 07:09:52,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:52,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 1237 transitions, 29571 flow. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:52,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:52,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:52,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:09:54,636 INFO L124 PetriNetUnfolderBase]: 2493/4131 cut-off events. [2024-10-13 07:09:54,637 INFO L125 PetriNetUnfolderBase]: For 138087/138087 co-relation queries the response was YES. [2024-10-13 07:09:54,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47326 conditions, 4131 events. 2493/4131 cut-off events. For 138087/138087 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 25410 event pairs, 458 based on Foata normal form. 15/4146 useless extension candidates. Maximal degree in co-relation 47125. Up to 2868 conditions per place. [2024-10-13 07:09:54,720 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 935 selfloop transitions, 412 changer transitions 19/1367 dead transitions. [2024-10-13 07:09:54,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1367 transitions, 35169 flow [2024-10-13 07:09:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-13 07:09:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-13 07:09:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2024-10-13 07:09:54,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2024-10-13 07:09:54,721 INFO L175 Difference]: Start difference. First operand has 526 places, 1237 transitions, 29571 flow. Second operand 17 states and 133 transitions. [2024-10-13 07:09:54,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1367 transitions, 35169 flow [2024-10-13 07:09:56,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1367 transitions, 33985 flow, removed 80 selfloop flow, removed 17 redundant places. [2024-10-13 07:09:56,062 INFO L231 Difference]: Finished difference. Result has 527 places, 1265 transitions, 30520 flow [2024-10-13 07:09:56,063 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=28473, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=30520, PETRI_PLACES=527, PETRI_TRANSITIONS=1265} [2024-10-13 07:09:56,063 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 507 predicate places. [2024-10-13 07:09:56,063 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 1265 transitions, 30520 flow [2024-10-13 07:09:56,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,063 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:09:56,064 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:09:56,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-10-13 07:09:56,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-13 07:09:56,265 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 07:09:56,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:09:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1141727027, now seen corresponding path program 56 times [2024-10-13 07:09:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:09:56,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901856939] [2024-10-13 07:09:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:09:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:09:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:09:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:56,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:09:56,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901856939] [2024-10-13 07:09:56,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901856939] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 07:09:56,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927683979] [2024-10-13 07:09:56,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 07:09:56,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 07:09:56,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:09:56,394 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 07:09:56,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-13 07:09:56,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 07:09:56,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 07:09:56,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 07:09:56,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 07:09:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:56,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 07:09:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:09:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927683979] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 07:09:56,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 07:09:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-13 07:09:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550281930] [2024-10-13 07:09:56,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 07:09:56,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 07:09:56,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:09:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 07:09:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-13 07:09:56,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-13 07:09:56,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1265 transitions, 30520 flow. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:09:56,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:09:56,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-13 07:09:56,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand