./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 14:28:13,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:28:13,510 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:28:13,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:28:13,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:28:13,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:28:13,547 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:28:13,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:28:13,547 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:28:13,548 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:28:13,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:28:13,549 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:28:13,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:28:13,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:28:13,551 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:28:13,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:28:13,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:28:13,552 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:28:13,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:28:13,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:28:13,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:28:13,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:28:13,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:28:13,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:28:13,556 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:28:13,557 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:28:13,557 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:28:13,557 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:28:13,557 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:28:13,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:28:13,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:28:13,558 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:28:13,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:13,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:28:13,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:28:13,559 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:28:13,559 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:28:13,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:28:13,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:28:13,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:28:13,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:28:13,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:28:13,561 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 115f061be4541a19227bc1624a8b38d08b679b43ee58fd41d4a05fa6a8fd007e [2024-10-11 14:28:13,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:28:13,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:28:13,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:28:13,829 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:28:13,829 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:28:13,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-11 14:28:15,369 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:28:15,570 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:28:15,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/fibonacci.wvr.c [2024-10-11 14:28:15,585 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8c82f94f4/f234c6b025d04459bb367ed1dfbbbfac/FLAG35f29d204 [2024-10-11 14:28:15,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8c82f94f4/f234c6b025d04459bb367ed1dfbbbfac [2024-10-11 14:28:15,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:28:15,607 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:28:15,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:15,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:28:15,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:28:15,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:15" (1/1) ... [2024-10-11 14:28:15,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3a6f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:15, skipping insertion in model container [2024-10-11 14:28:15,622 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:15" (1/1) ... [2024-10-11 14:28:15,647 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:28:15,956 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] [2024-10-11 14:28:15,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:15,979 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:28:16,000 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] [2024-10-11 14:28:16,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:28:16,021 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:28:16,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16 WrapperNode [2024-10-11 14:28:16,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:28:16,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:16,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:28:16,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:28:16,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,057 INFO L138 Inliner]: procedures = 22, calls = 18, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 160 [2024-10-11 14:28:16,058 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:28:16,059 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:28:16,059 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:28:16,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:28:16,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,078 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,091 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]. [2024-10-11 14:28:16,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,096 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,099 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:28:16,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:28:16,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:28:16,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:28:16,105 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (1/1) ... [2024-10-11 14:28:16,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:28:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:16,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:28:16,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:28:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:28:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 14:28:16,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 14:28:16,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 14:28:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 14:28:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:28:16,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:28:16,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:28:16,182 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:28:16,281 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:28:16,284 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:28:16,540 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:28:16,540 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:28:16,828 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:28:16,829 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 14:28:16,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:16 BoogieIcfgContainer [2024-10-11 14:28:16,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:28:16,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:28:16,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:28:16,853 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:28:16,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:15" (1/3) ... [2024-10-11 14:28:16,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567ee2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:16, skipping insertion in model container [2024-10-11 14:28:16,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:16" (2/3) ... [2024-10-11 14:28:16,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567ee2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:16, skipping insertion in model container [2024-10-11 14:28:16,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:16" (3/3) ... [2024-10-11 14:28:16,858 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2024-10-11 14:28:16,875 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:28:16,876 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:28:16,876 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:28:16,927 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:28:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow [2024-10-11 14:28:16,992 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events. [2024-10-11 14:28:16,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:28:16,995 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. [2024-10-11 14:28:16,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow [2024-10-11 14:28:16,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow [2024-10-11 14:28:17,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:28:17,015 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;@25111213, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:28:17,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:28:17,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:28:17,026 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2024-10-11 14:28:17,026 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:28:17,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:17,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:17,028 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:17,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 885364131, now seen corresponding path program 1 times [2024-10-11 14:28:17,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:17,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244456328] [2024-10-11 14:28:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244456328] [2024-10-11 14:28:17,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244456328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:17,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:17,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080929808] [2024-10-11 14:28:17,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:17,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:17,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:17,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:17,735 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) [2024-10-11 14:28:17,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:17,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:17,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:17,893 INFO L124 PetriNetUnfolderBase]: 67/128 cut-off events. [2024-10-11 14:28:17,893 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 14:28:17,895 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. [2024-10-11 14:28:17,897 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 25 selfloop transitions, 5 changer transitions 4/35 dead transitions. [2024-10-11 14:28:17,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 35 transitions, 168 flow [2024-10-11 14:28:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 50 transitions. [2024-10-11 14:28:17,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-11 14:28:17,912 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 5 states and 50 transitions. [2024-10-11 14:28:17,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 35 transitions, 168 flow [2024-10-11 14:28:17,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:17,917 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 68 flow [2024-10-11 14:28:17,919 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} [2024-10-11 14:28:17,924 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2024-10-11 14:28:17,924 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 68 flow [2024-10-11 14:28:17,925 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) [2024-10-11 14:28:17,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:17,925 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:17,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:28:17,925 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:17,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:17,926 INFO L85 PathProgramCache]: Analyzing trace with hash 786232087, now seen corresponding path program 2 times [2024-10-11 14:28:17,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:17,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160773189] [2024-10-11 14:28:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:17,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160773189] [2024-10-11 14:28:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160773189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:28:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075849286] [2024-10-11 14:28:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:18,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:18,165 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) [2024-10-11 14:28:18,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:18,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:18,427 INFO L124 PetriNetUnfolderBase]: 66/121 cut-off events. [2024-10-11 14:28:18,427 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-10-11 14:28:18,428 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. [2024-10-11 14:28:18,431 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 6 changer transitions 4/35 dead transitions. [2024-10-11 14:28:18,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 35 transitions, 182 flow [2024-10-11 14:28:18,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:18,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-10-11 14:28:18,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-11 14:28:18,434 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 68 flow. Second operand 5 states and 49 transitions. [2024-10-11 14:28:18,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 35 transitions, 182 flow [2024-10-11 14:28:18,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 35 transitions, 180 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:18,437 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 100 flow [2024-10-11 14:28:18,438 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} [2024-10-11 14:28:18,439 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 8 predicate places. [2024-10-11 14:28:18,439 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 100 flow [2024-10-11 14:28:18,439 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) [2024-10-11 14:28:18,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:18,440 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:18,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:28:18,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:18,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 130402592, now seen corresponding path program 1 times [2024-10-11 14:28:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737749545] [2024-10-11 14:28:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:18,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737749545] [2024-10-11 14:28:18,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737749545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:18,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034158] [2024-10-11 14:28:18,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:18,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:18,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:18,532 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) [2024-10-11 14:28:18,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:18,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:18,639 INFO L124 PetriNetUnfolderBase]: 80/140 cut-off events. [2024-10-11 14:28:18,639 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2024-10-11 14:28:18,640 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. [2024-10-11 14:28:18,641 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 24 selfloop transitions, 10 changer transitions 3/38 dead transitions. [2024-10-11 14:28:18,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 256 flow [2024-10-11 14:28:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-11 14:28:18,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:18,643 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 100 flow. Second operand 5 states and 45 transitions. [2024-10-11 14:28:18,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 256 flow [2024-10-11 14:28:18,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 242 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:18,646 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 168 flow [2024-10-11 14:28:18,646 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} [2024-10-11 14:28:18,647 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2024-10-11 14:28:18,647 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 168 flow [2024-10-11 14:28:18,647 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) [2024-10-11 14:28:18,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:18,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:18,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:28:18,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:18,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1679495154, now seen corresponding path program 2 times [2024-10-11 14:28:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:18,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494814847] [2024-10-11 14:28:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:18,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494814847] [2024-10-11 14:28:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494814847] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:18,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351041141] [2024-10-11 14:28:18,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:18,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:18,713 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:18,713 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) [2024-10-11 14:28:18,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:18,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:18,806 INFO L124 PetriNetUnfolderBase]: 82/151 cut-off events. [2024-10-11 14:28:18,806 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2024-10-11 14:28:18,807 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. [2024-10-11 14:28:18,808 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 32 selfloop transitions, 7 changer transitions 5/45 dead transitions. [2024-10-11 14:28:18,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 322 flow [2024-10-11 14:28:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2024-10-11 14:28:18,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-11 14:28:18,812 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 168 flow. Second operand 5 states and 49 transitions. [2024-10-11 14:28:18,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 322 flow [2024-10-11 14:28:18,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 301 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:18,817 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 167 flow [2024-10-11 14:28:18,817 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} [2024-10-11 14:28:18,819 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2024-10-11 14:28:18,819 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 167 flow [2024-10-11 14:28:18,819 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) [2024-10-11 14:28:18,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:18,820 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:18,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:28:18,820 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:18,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -195788256, now seen corresponding path program 3 times [2024-10-11 14:28:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:18,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631059215] [2024-10-11 14:28:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:18,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631059215] [2024-10-11 14:28:18,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631059215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:18,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:18,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211631683] [2024-10-11 14:28:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:18,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:18,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:18,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:18,891 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) [2024-10-11 14:28:18,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:18,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:18,973 INFO L124 PetriNetUnfolderBase]: 89/160 cut-off events. [2024-10-11 14:28:18,974 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-11 14:28:18,974 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. [2024-10-11 14:28:18,976 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 12 changer transitions 4/40 dead transitions. [2024-10-11 14:28:18,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 315 flow [2024-10-11 14:28:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:18,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-10-11 14:28:18,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-10-11 14:28:18,977 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 167 flow. Second operand 5 states and 44 transitions. [2024-10-11 14:28:18,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 315 flow [2024-10-11 14:28:18,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:18,981 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 218 flow [2024-10-11 14:28:18,981 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} [2024-10-11 14:28:18,981 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2024-10-11 14:28:18,982 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 218 flow [2024-10-11 14:28:18,982 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) [2024-10-11 14:28:18,982 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:18,982 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:18,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:28:18,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:18,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -803180865, now seen corresponding path program 1 times [2024-10-11 14:28:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:18,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237465663] [2024-10-11 14:28:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237465663] [2024-10-11 14:28:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237465663] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:19,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125431208] [2024-10-11 14:28:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:19,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:19,040 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) [2024-10-11 14:28:19,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:19,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:19,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:19,138 INFO L124 PetriNetUnfolderBase]: 92/160 cut-off events. [2024-10-11 14:28:19,138 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-10-11 14:28:19,139 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. [2024-10-11 14:28:19,142 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 39 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-10-11 14:28:19,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 395 flow [2024-10-11 14:28:19,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:19,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 52 transitions. [2024-10-11 14:28:19,144 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-11 14:28:19,144 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 218 flow. Second operand 5 states and 52 transitions. [2024-10-11 14:28:19,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 395 flow [2024-10-11 14:28:19,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 350 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-11 14:28:19,149 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 224 flow [2024-10-11 14:28:19,149 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} [2024-10-11 14:28:19,150 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 17 predicate places. [2024-10-11 14:28:19,151 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 224 flow [2024-10-11 14:28:19,151 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) [2024-10-11 14:28:19,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:19,151 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:19,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:28:19,152 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:19,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:19,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1498961711, now seen corresponding path program 2 times [2024-10-11 14:28:19,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:19,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892064562] [2024-10-11 14:28:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892064562] [2024-10-11 14:28:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892064562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:19,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:19,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039141781] [2024-10-11 14:28:19,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:19,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:19,232 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) [2024-10-11 14:28:19,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:19,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:19,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:19,321 INFO L124 PetriNetUnfolderBase]: 93/171 cut-off events. [2024-10-11 14:28:19,321 INFO L125 PetriNetUnfolderBase]: For 271/271 co-relation queries the response was YES. [2024-10-11 14:28:19,322 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. [2024-10-11 14:28:19,325 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 30 selfloop transitions, 11 changer transitions 3/45 dead transitions. [2024-10-11 14:28:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 361 flow [2024-10-11 14:28:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-11 14:28:19,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:19,326 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 224 flow. Second operand 5 states and 45 transitions. [2024-10-11 14:28:19,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 361 flow [2024-10-11 14:28:19,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 346 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:19,331 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 231 flow [2024-10-11 14:28:19,331 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} [2024-10-11 14:28:19,332 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2024-10-11 14:28:19,332 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 231 flow [2024-10-11 14:28:19,333 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) [2024-10-11 14:28:19,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:19,333 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:19,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:28:19,333 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1147608036, now seen corresponding path program 4 times [2024-10-11 14:28:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253398129] [2024-10-11 14:28:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253398129] [2024-10-11 14:28:19,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253398129] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:19,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499157985] [2024-10-11 14:28:19,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:19,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:19,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:19,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:19,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:28:19,476 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:19,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:19,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:28:19,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499157985] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:19,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-10-11 14:28:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940749642] [2024-10-11 14:28:19,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:28:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:28:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:28:19,562 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:19,562 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) [2024-10-11 14:28:19,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:19,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:19,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:19,718 INFO L124 PetriNetUnfolderBase]: 97/175 cut-off events. [2024-10-11 14:28:19,718 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-10-11 14:28:19,719 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. [2024-10-11 14:28:19,720 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-10-11 14:28:19,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 454 flow [2024-10-11 14:28:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-10-11 14:28:19,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-11 14:28:19,722 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 231 flow. Second operand 7 states and 62 transitions. [2024-10-11 14:28:19,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 454 flow [2024-10-11 14:28:19,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 424 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:19,725 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 285 flow [2024-10-11 14:28:19,726 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} [2024-10-11 14:28:19,726 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2024-10-11 14:28:19,727 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 285 flow [2024-10-11 14:28:19,727 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) [2024-10-11 14:28:19,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:19,727 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:19,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:19,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:19,929 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:19,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:19,929 INFO L85 PathProgramCache]: Analyzing trace with hash 496120645, now seen corresponding path program 3 times [2024-10-11 14:28:19,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:19,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992508173] [2024-10-11 14:28:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:19,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992508173] [2024-10-11 14:28:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992508173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:19,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:19,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625923384] [2024-10-11 14:28:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:19,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:19,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:19,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:19,989 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) [2024-10-11 14:28:19,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:19,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:19,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,078 INFO L124 PetriNetUnfolderBase]: 104/187 cut-off events. [2024-10-11 14:28:20,082 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-10-11 14:28:20,083 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. [2024-10-11 14:28:20,084 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 31 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2024-10-11 14:28:20,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 427 flow [2024-10-11 14:28:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:20,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:20,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2024-10-11 14:28:20,085 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-10-11 14:28:20,085 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 285 flow. Second operand 5 states and 47 transitions. [2024-10-11 14:28:20,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 427 flow [2024-10-11 14:28:20,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 407 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:20,088 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 311 flow [2024-10-11 14:28:20,089 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} [2024-10-11 14:28:20,089 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2024-10-11 14:28:20,090 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 311 flow [2024-10-11 14:28:20,090 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) [2024-10-11 14:28:20,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:20,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:20,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:28:20,090 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:20,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -960995445, now seen corresponding path program 4 times [2024-10-11 14:28:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:20,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108756106] [2024-10-11 14:28:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:20,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:20,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108756106] [2024-10-11 14:28:20,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108756106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:20,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:20,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:20,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132221134] [2024-10-11 14:28:20,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:20,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:20,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:20,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:20,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:20,149 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) [2024-10-11 14:28:20,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:20,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:20,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,242 INFO L124 PetriNetUnfolderBase]: 103/188 cut-off events. [2024-10-11 14:28:20,243 INFO L125 PetriNetUnfolderBase]: For 451/451 co-relation queries the response was YES. [2024-10-11 14:28:20,244 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. [2024-10-11 14:28:20,245 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 28 selfloop transitions, 14 changer transitions 2/45 dead transitions. [2024-10-11 14:28:20,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 424 flow [2024-10-11 14:28:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:20,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2024-10-11 14:28:20,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-10-11 14:28:20,246 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 311 flow. Second operand 5 states and 43 transitions. [2024-10-11 14:28:20,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 424 flow [2024-10-11 14:28:20,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 390 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:20,249 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 292 flow [2024-10-11 14:28:20,250 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} [2024-10-11 14:28:20,250 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-10-11 14:28:20,250 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 292 flow [2024-10-11 14:28:20,251 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) [2024-10-11 14:28:20,251 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:20,251 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:20,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:28:20,251 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:20,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash -102918228, now seen corresponding path program 5 times [2024-10-11 14:28:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:20,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791563515] [2024-10-11 14:28:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:20,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791563515] [2024-10-11 14:28:20,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791563515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:20,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:20,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958964979] [2024-10-11 14:28:20,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:20,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:20,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:20,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:20,307 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) [2024-10-11 14:28:20,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:20,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,397 INFO L124 PetriNetUnfolderBase]: 108/195 cut-off events. [2024-10-11 14:28:20,397 INFO L125 PetriNetUnfolderBase]: For 534/534 co-relation queries the response was YES. [2024-10-11 14:28:20,398 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. [2024-10-11 14:28:20,400 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 31 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-10-11 14:28:20,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 435 flow [2024-10-11 14:28:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:20,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2024-10-11 14:28:20,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:20,402 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 292 flow. Second operand 5 states and 45 transitions. [2024-10-11 14:28:20,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 435 flow [2024-10-11 14:28:20,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 405 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:20,406 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 304 flow [2024-10-11 14:28:20,406 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} [2024-10-11 14:28:20,407 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 29 predicate places. [2024-10-11 14:28:20,407 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 304 flow [2024-10-11 14:28:20,407 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) [2024-10-11 14:28:20,407 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:20,407 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:20,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:28:20,408 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:20,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash 571836441, now seen corresponding path program 5 times [2024-10-11 14:28:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349937303] [2024-10-11 14:28:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:20,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:20,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349937303] [2024-10-11 14:28:20,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349937303] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:20,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841654704] [2024-10-11 14:28:20,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:20,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:20,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:20,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:20,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:28:20,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:20,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:20,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:28:20,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841654704] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:20,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:20,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 14:28:20,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951708644] [2024-10-11 14:28:20,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:20,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:28:20,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:20,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:28:20,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:28:20,637 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:20,637 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) [2024-10-11 14:28:20,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:20,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:20,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:20,760 INFO L124 PetriNetUnfolderBase]: 103/190 cut-off events. [2024-10-11 14:28:20,761 INFO L125 PetriNetUnfolderBase]: For 528/528 co-relation queries the response was YES. [2024-10-11 14:28:20,761 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. [2024-10-11 14:28:20,763 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 33 selfloop transitions, 14 changer transitions 0/48 dead transitions. [2024-10-11 14:28:20,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 433 flow [2024-10-11 14:28:20,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:28:20,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:28:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2024-10-11 14:28:20,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-10-11 14:28:20,764 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 304 flow. Second operand 6 states and 51 transitions. [2024-10-11 14:28:20,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 433 flow [2024-10-11 14:28:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 397 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:20,768 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 304 flow [2024-10-11 14:28:20,769 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} [2024-10-11 14:28:20,769 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 32 predicate places. [2024-10-11 14:28:20,770 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 304 flow [2024-10-11 14:28:20,770 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) [2024-10-11 14:28:20,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:20,771 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:20,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:28:20,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:20,972 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:20,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:20,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1280825105, now seen corresponding path program 6 times [2024-10-11 14:28:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752727596] [2024-10-11 14:28:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752727596] [2024-10-11 14:28:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752727596] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:28:21,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:28:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:28:21,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225462154] [2024-10-11 14:28:21,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:28:21,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:28:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:21,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:28:21,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:28:21,032 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:21,032 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) [2024-10-11 14:28:21,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:21,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:21,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:21,106 INFO L124 PetriNetUnfolderBase]: 99/178 cut-off events. [2024-10-11 14:28:21,107 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-10-11 14:28:21,108 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. [2024-10-11 14:28:21,109 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 29 selfloop transitions, 12 changer transitions 2/44 dead transitions. [2024-10-11 14:28:21,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 406 flow [2024-10-11 14:28:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:28:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:28:21,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2024-10-11 14:28:21,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-10-11 14:28:21,110 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 304 flow. Second operand 5 states and 41 transitions. [2024-10-11 14:28:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 406 flow [2024-10-11 14:28:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 362 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-11 14:28:21,113 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 268 flow [2024-10-11 14:28:21,114 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} [2024-10-11 14:28:21,114 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2024-10-11 14:28:21,114 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 268 flow [2024-10-11 14:28:21,115 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) [2024-10-11 14:28:21,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:21,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:21,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:28:21,115 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:21,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:21,116 INFO L85 PathProgramCache]: Analyzing trace with hash 519243532, now seen corresponding path program 6 times [2024-10-11 14:28:21,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:21,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146463761] [2024-10-11 14:28:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:21,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:21,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146463761] [2024-10-11 14:28:21,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146463761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:21,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223384380] [2024-10-11 14:28:21,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:21,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:21,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:21,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:21,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:28:21,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:28:21,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:21,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 14:28:21,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:21,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,294 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223384380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:21,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 14:28:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903468691] [2024-10-11 14:28:21,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:21,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 14:28:21,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 14:28:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-11 14:28:21,334 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:21,334 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) [2024-10-11 14:28:21,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:21,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:21,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:21,489 INFO L124 PetriNetUnfolderBase]: 96/168 cut-off events. [2024-10-11 14:28:21,489 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2024-10-11 14:28:21,490 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. [2024-10-11 14:28:21,491 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 35 selfloop transitions, 23 changer transitions 0/59 dead transitions. [2024-10-11 14:28:21,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 487 flow [2024-10-11 14:28:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:28:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:28:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 76 transitions. [2024-10-11 14:28:21,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-10-11 14:28:21,493 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 268 flow. Second operand 10 states and 76 transitions. [2024-10-11 14:28:21,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 487 flow [2024-10-11 14:28:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:21,497 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 337 flow [2024-10-11 14:28:21,497 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} [2024-10-11 14:28:21,498 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2024-10-11 14:28:21,498 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 337 flow [2024-10-11 14:28:21,498 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) [2024-10-11 14:28:21,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:21,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:21,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:28:21,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:21,699 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:21,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1973538062, now seen corresponding path program 1 times [2024-10-11 14:28:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:21,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802335067] [2024-10-11 14:28:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:21,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:21,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802335067] [2024-10-11 14:28:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802335067] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197341959] [2024-10-11 14:28:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:21,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:21,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:28:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:21,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:21,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:22,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:22,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197341959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:22,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:22,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-10-11 14:28:22,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754089453] [2024-10-11 14:28:22,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:22,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:22,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:22,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:22,262 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) [2024-10-11 14:28:22,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:22,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:22,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:22,479 INFO L124 PetriNetUnfolderBase]: 132/235 cut-off events. [2024-10-11 14:28:22,479 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2024-10-11 14:28:22,480 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. [2024-10-11 14:28:22,481 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 17 changer transitions 4/70 dead transitions. [2024-10-11 14:28:22,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 614 flow [2024-10-11 14:28:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:22,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-10-11 14:28:22,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:22,483 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 337 flow. Second operand 7 states and 63 transitions. [2024-10-11 14:28:22,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 614 flow [2024-10-11 14:28:22,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 526 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-10-11 14:28:22,488 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 395 flow [2024-10-11 14:28:22,489 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} [2024-10-11 14:28:22,489 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2024-10-11 14:28:22,489 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 395 flow [2024-10-11 14:28:22,489 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) [2024-10-11 14:28:22,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:22,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:22,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:28:22,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 14:28:22,690 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:22,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1662875284, now seen corresponding path program 2 times [2024-10-11 14:28:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353477701] [2024-10-11 14:28:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:22,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353477701] [2024-10-11 14:28:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353477701] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169182036] [2024-10-11 14:28:22,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:22,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:22,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:22,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:28:22,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:23,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:23,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:23,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:23,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:23,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169182036] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:23,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:23,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:28:23,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945609883] [2024-10-11 14:28:23,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:23,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:28:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:23,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:28:23,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:28:23,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:23,289 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) [2024-10-11 14:28:23,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:23,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:23,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:23,473 INFO L124 PetriNetUnfolderBase]: 143/259 cut-off events. [2024-10-11 14:28:23,474 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2024-10-11 14:28:23,476 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. [2024-10-11 14:28:23,478 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 51 selfloop transitions, 19 changer transitions 4/75 dead transitions. [2024-10-11 14:28:23,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 75 transitions, 653 flow [2024-10-11 14:28:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-10-11 14:28:23,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-10-11 14:28:23,481 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 395 flow. Second operand 7 states and 66 transitions. [2024-10-11 14:28:23,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 75 transitions, 653 flow [2024-10-11 14:28:23,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 628 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:23,488 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 470 flow [2024-10-11 14:28:23,488 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} [2024-10-11 14:28:23,489 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2024-10-11 14:28:23,489 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 470 flow [2024-10-11 14:28:23,489 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) [2024-10-11 14:28:23,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:23,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:23,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:28:23,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 14:28:23,698 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:23,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1579758394, now seen corresponding path program 3 times [2024-10-11 14:28:23,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662998468] [2024-10-11 14:28:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662998468] [2024-10-11 14:28:23,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662998468] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:23,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261071495] [2024-10-11 14:28:23,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:23,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:23,888 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:23,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:28:23,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:28:23,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:23,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:23,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:24,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:24,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261071495] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:24,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:24,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:28:24,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288901580] [2024-10-11 14:28:24,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:24,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:28:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:28:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:28:24,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:24,229 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) [2024-10-11 14:28:24,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:24,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:24,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:24,441 INFO L124 PetriNetUnfolderBase]: 141/251 cut-off events. [2024-10-11 14:28:24,441 INFO L125 PetriNetUnfolderBase]: For 899/899 co-relation queries the response was YES. [2024-10-11 14:28:24,442 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. [2024-10-11 14:28:24,444 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 48 selfloop transitions, 20 changer transitions 4/73 dead transitions. [2024-10-11 14:28:24,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 693 flow [2024-10-11 14:28:24,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:24,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2024-10-11 14:28:24,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:24,445 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 470 flow. Second operand 7 states and 63 transitions. [2024-10-11 14:28:24,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 693 flow [2024-10-11 14:28:24,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 636 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:24,450 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 503 flow [2024-10-11 14:28:24,450 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} [2024-10-11 14:28:24,451 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 49 predicate places. [2024-10-11 14:28:24,451 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 503 flow [2024-10-11 14:28:24,451 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) [2024-10-11 14:28:24,451 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:24,452 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:24,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 14:28:24,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 14:28:24,653 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:24,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:24,653 INFO L85 PathProgramCache]: Analyzing trace with hash -846354170, now seen corresponding path program 4 times [2024-10-11 14:28:24,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:24,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277703201] [2024-10-11 14:28:24,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:24,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:24,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:24,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277703201] [2024-10-11 14:28:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277703201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770615831] [2024-10-11 14:28:24,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:24,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:24,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:24,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:24,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:28:24,925 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:24,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:24,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:24,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:25,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:25,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770615831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:25,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:25,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 14:28:25,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478540278] [2024-10-11 14:28:25,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:25,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:25,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:25,179 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) [2024-10-11 14:28:25,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:25,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:25,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:25,364 INFO L124 PetriNetUnfolderBase]: 166/294 cut-off events. [2024-10-11 14:28:25,365 INFO L125 PetriNetUnfolderBase]: For 985/985 co-relation queries the response was YES. [2024-10-11 14:28:25,366 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. [2024-10-11 14:28:25,368 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 58 selfloop transitions, 19 changer transitions 4/82 dead transitions. [2024-10-11 14:28:25,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 800 flow [2024-10-11 14:28:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 57 transitions. [2024-10-11 14:28:25,369 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-11 14:28:25,369 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 503 flow. Second operand 7 states and 57 transitions. [2024-10-11 14:28:25,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 800 flow [2024-10-11 14:28:25,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 753 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:25,375 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 628 flow [2024-10-11 14:28:25,375 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} [2024-10-11 14:28:25,376 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 54 predicate places. [2024-10-11 14:28:25,376 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 628 flow [2024-10-11 14:28:25,376 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) [2024-10-11 14:28:25,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:25,376 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:25,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 14:28:25,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 14:28:25,577 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:25,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1647747176, now seen corresponding path program 5 times [2024-10-11 14:28:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558599321] [2024-10-11 14:28:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:25,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558599321] [2024-10-11 14:28:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558599321] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704163199] [2024-10-11 14:28:25,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:25,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:25,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:28:25,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:28:25,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:25,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:25,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:25,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:25,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:26,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704163199] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:26,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-11 14:28:26,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326529114] [2024-10-11 14:28:26,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:26,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:26,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:26,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:26,055 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) [2024-10-11 14:28:26,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:26,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:26,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:26,252 INFO L124 PetriNetUnfolderBase]: 178/319 cut-off events. [2024-10-11 14:28:26,252 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2024-10-11 14:28:26,253 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. [2024-10-11 14:28:26,255 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 65 selfloop transitions, 20 changer transitions 4/90 dead transitions. [2024-10-11 14:28:26,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 90 transitions, 934 flow [2024-10-11 14:28:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:26,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-10-11 14:28:26,256 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-10-11 14:28:26,256 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 628 flow. Second operand 7 states and 62 transitions. [2024-10-11 14:28:26,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 90 transitions, 934 flow [2024-10-11 14:28:26,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 895 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-10-11 14:28:26,263 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 707 flow [2024-10-11 14:28:26,263 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} [2024-10-11 14:28:26,264 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2024-10-11 14:28:26,264 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 707 flow [2024-10-11 14:28:26,264 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) [2024-10-11 14:28:26,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:26,264 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:26,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 14:28:26,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:26,468 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:26,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1730864066, now seen corresponding path program 6 times [2024-10-11 14:28:26,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:26,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991210661] [2024-10-11 14:28:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:26,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:26,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991210661] [2024-10-11 14:28:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991210661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321333741] [2024-10-11 14:28:26,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:26,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:26,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:26,663 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:26,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:28:26,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:28:26,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:26,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:28:26,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:26,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:26,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321333741] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:26,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-11 14:28:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994273315] [2024-10-11 14:28:26,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:26,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:28:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:28:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:28:26,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:26,965 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) [2024-10-11 14:28:26,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:26,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:26,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:27,151 INFO L124 PetriNetUnfolderBase]: 176/311 cut-off events. [2024-10-11 14:28:27,152 INFO L125 PetriNetUnfolderBase]: For 1593/1593 co-relation queries the response was YES. [2024-10-11 14:28:27,153 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. [2024-10-11 14:28:27,155 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 63 selfloop transitions, 21 changer transitions 4/89 dead transitions. [2024-10-11 14:28:27,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 971 flow [2024-10-11 14:28:27,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:27,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 60 transitions. [2024-10-11 14:28:27,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-10-11 14:28:27,158 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 707 flow. Second operand 7 states and 60 transitions. [2024-10-11 14:28:27,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 971 flow [2024-10-11 14:28:27,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 891 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:27,168 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 729 flow [2024-10-11 14:28:27,169 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} [2024-10-11 14:28:27,169 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2024-10-11 14:28:27,169 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 729 flow [2024-10-11 14:28:27,169 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) [2024-10-11 14:28:27,170 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:27,170 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:27,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 14:28:27,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:27,374 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:27,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:27,374 INFO L85 PathProgramCache]: Analyzing trace with hash -458812811, now seen corresponding path program 7 times [2024-10-11 14:28:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:27,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919827918] [2024-10-11 14:28:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919827918] [2024-10-11 14:28:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919827918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256849821] [2024-10-11 14:28:27,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:27,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:27,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:27,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:27,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:28:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:27,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:27,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:27,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:27,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:27,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256849821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:27,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:27,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 14:28:27,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343018456] [2024-10-11 14:28:27,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:27,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:27,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:27,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:27,578 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:27,578 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) [2024-10-11 14:28:27,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:27,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:27,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:27,725 INFO L124 PetriNetUnfolderBase]: 190/340 cut-off events. [2024-10-11 14:28:27,725 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-10-11 14:28:27,727 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. [2024-10-11 14:28:27,729 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 64 selfloop transitions, 32 changer transitions 8/105 dead transitions. [2024-10-11 14:28:27,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 1160 flow [2024-10-11 14:28:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-10-11 14:28:27,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-10-11 14:28:27,730 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 729 flow. Second operand 7 states and 65 transitions. [2024-10-11 14:28:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 1160 flow [2024-10-11 14:28:27,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 1095 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:27,738 INFO L231 Difference]: Finished difference. Result has 90 places, 78 transitions, 807 flow [2024-10-11 14:28:27,738 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} [2024-10-11 14:28:27,739 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 70 predicate places. [2024-10-11 14:28:27,739 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 78 transitions, 807 flow [2024-10-11 14:28:27,739 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) [2024-10-11 14:28:27,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:27,739 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:27,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:27,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 14:28:27,941 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:27,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2081245415, now seen corresponding path program 8 times [2024-10-11 14:28:27,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:27,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811453865] [2024-10-11 14:28:27,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:27,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811453865] [2024-10-11 14:28:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811453865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:28,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994005101] [2024-10-11 14:28:28,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:28,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:28,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:28,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:28,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:28:28,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:28,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:28,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:28,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994005101] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:28,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:28,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:28:28,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925600951] [2024-10-11 14:28:28,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:28,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:28,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:28,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:28,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:28,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:28,172 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) [2024-10-11 14:28:28,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:28,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:28,344 INFO L124 PetriNetUnfolderBase]: 217/382 cut-off events. [2024-10-11 14:28:28,344 INFO L125 PetriNetUnfolderBase]: For 2621/2621 co-relation queries the response was YES. [2024-10-11 14:28:28,346 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. [2024-10-11 14:28:28,349 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 62 selfloop transitions, 54 changer transitions 6/123 dead transitions. [2024-10-11 14:28:28,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 1443 flow [2024-10-11 14:28:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 89 transitions. [2024-10-11 14:28:28,350 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-10-11 14:28:28,350 INFO L175 Difference]: Start difference. First operand has 90 places, 78 transitions, 807 flow. Second operand 11 states and 89 transitions. [2024-10-11 14:28:28,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 1443 flow [2024-10-11 14:28:28,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 1383 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:28,361 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 1142 flow [2024-10-11 14:28:28,361 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} [2024-10-11 14:28:28,361 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 79 predicate places. [2024-10-11 14:28:28,361 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 1142 flow [2024-10-11 14:28:28,362 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) [2024-10-11 14:28:28,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:28,362 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:28,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-11 14:28:28,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 14:28:28,563 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:28,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash -448813044, now seen corresponding path program 9 times [2024-10-11 14:28:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:28,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361494563] [2024-10-11 14:28:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361494563] [2024-10-11 14:28:28,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361494563] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:28,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12599709] [2024-10-11 14:28:28,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:28,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:28,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:28,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:28:28,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:28:28,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:28,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:28,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:28,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12599709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:28,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:28,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 14:28:28,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445594409] [2024-10-11 14:28:28,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:28,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:28,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:28,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:28,786 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) [2024-10-11 14:28:28,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:28,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:28,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:28,986 INFO L124 PetriNetUnfolderBase]: 221/382 cut-off events. [2024-10-11 14:28:28,986 INFO L125 PetriNetUnfolderBase]: For 3150/3150 co-relation queries the response was YES. [2024-10-11 14:28:28,990 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. [2024-10-11 14:28:28,994 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 84 selfloop transitions, 49 changer transitions 0/134 dead transitions. [2024-10-11 14:28:28,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 134 transitions, 1718 flow [2024-10-11 14:28:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:28:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:28:28,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2024-10-11 14:28:28,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:28:28,996 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 1142 flow. Second operand 10 states and 90 transitions. [2024-10-11 14:28:28,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 134 transitions, 1718 flow [2024-10-11 14:28:29,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 1595 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:29,012 INFO L231 Difference]: Finished difference. Result has 108 places, 102 transitions, 1239 flow [2024-10-11 14:28:29,012 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} [2024-10-11 14:28:29,013 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 88 predicate places. [2024-10-11 14:28:29,013 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 102 transitions, 1239 flow [2024-10-11 14:28:29,013 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) [2024-10-11 14:28:29,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:29,013 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:29,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-11 14:28:29,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:29,214 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:29,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:29,215 INFO L85 PathProgramCache]: Analyzing trace with hash -524428952, now seen corresponding path program 10 times [2024-10-11 14:28:29,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:29,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481915434] [2024-10-11 14:28:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:29,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481915434] [2024-10-11 14:28:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481915434] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304432572] [2024-10-11 14:28:29,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:29,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:29,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:29,285 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:29,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:28:29,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:29,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:29,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:29,353 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:29,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304432572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:29,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315743558] [2024-10-11 14:28:29,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:29,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:29,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:29,426 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) [2024-10-11 14:28:29,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:29,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:29,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:29,636 INFO L124 PetriNetUnfolderBase]: 255/432 cut-off events. [2024-10-11 14:28:29,636 INFO L125 PetriNetUnfolderBase]: For 4543/4543 co-relation queries the response was YES. [2024-10-11 14:28:29,638 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. [2024-10-11 14:28:29,641 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 83 selfloop transitions, 64 changer transitions 1/149 dead transitions. [2024-10-11 14:28:29,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 149 transitions, 2104 flow [2024-10-11 14:28:29,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:28:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:28:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 103 transitions. [2024-10-11 14:28:29,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44017094017094016 [2024-10-11 14:28:29,643 INFO L175 Difference]: Start difference. First operand has 108 places, 102 transitions, 1239 flow. Second operand 13 states and 103 transitions. [2024-10-11 14:28:29,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 149 transitions, 2104 flow [2024-10-11 14:28:29,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 149 transitions, 1900 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-10-11 14:28:29,664 INFO L231 Difference]: Finished difference. Result has 121 places, 127 transitions, 1687 flow [2024-10-11 14:28:29,664 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} [2024-10-11 14:28:29,664 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 101 predicate places. [2024-10-11 14:28:29,664 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 127 transitions, 1687 flow [2024-10-11 14:28:29,665 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) [2024-10-11 14:28:29,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:29,665 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:29,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-11 14:28:29,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:29,870 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:29,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:29,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1852949592, now seen corresponding path program 11 times [2024-10-11 14:28:29,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141582629] [2024-10-11 14:28:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:29,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:29,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141582629] [2024-10-11 14:28:29,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141582629] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:29,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056750959] [2024-10-11 14:28:29,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:29,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:29,949 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:29,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 14:28:30,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:30,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:30,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:30,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:30,070 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:30,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056750959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:30,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:30,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:28:30,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724452178] [2024-10-11 14:28:30,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:30,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:30,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:30,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:30,111 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) [2024-10-11 14:28:30,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:30,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:30,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:30,417 INFO L124 PetriNetUnfolderBase]: 311/522 cut-off events. [2024-10-11 14:28:30,417 INFO L125 PetriNetUnfolderBase]: For 6792/6792 co-relation queries the response was YES. [2024-10-11 14:28:30,421 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. [2024-10-11 14:28:30,424 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 104 selfloop transitions, 75 changer transitions 0/180 dead transitions. [2024-10-11 14:28:30,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 180 transitions, 2646 flow [2024-10-11 14:28:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:28:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:28:30,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 112 transitions. [2024-10-11 14:28:30,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-10-11 14:28:30,426 INFO L175 Difference]: Start difference. First operand has 121 places, 127 transitions, 1687 flow. Second operand 14 states and 112 transitions. [2024-10-11 14:28:30,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 180 transitions, 2646 flow [2024-10-11 14:28:30,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 180 transitions, 2223 flow, removed 210 selfloop flow, removed 1 redundant places. [2024-10-11 14:28:30,452 INFO L231 Difference]: Finished difference. Result has 142 places, 155 transitions, 1992 flow [2024-10-11 14:28:30,453 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} [2024-10-11 14:28:30,453 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 122 predicate places. [2024-10-11 14:28:30,453 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 155 transitions, 1992 flow [2024-10-11 14:28:30,453 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) [2024-10-11 14:28:30,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:30,454 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:30,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 14:28:30,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-11 14:28:30,654 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:30,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2086199888, now seen corresponding path program 12 times [2024-10-11 14:28:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:30,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30281628] [2024-10-11 14:28:30,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:30,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:30,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30281628] [2024-10-11 14:28:30,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30281628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:30,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136010942] [2024-10-11 14:28:30,727 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:30,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:30,729 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:30,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 14:28:30,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:28:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:30,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:30,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:30,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:30,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:30,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136010942] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:30,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404863556] [2024-10-11 14:28:30,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:30,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:30,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:30,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:30,891 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) [2024-10-11 14:28:30,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:30,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:30,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:31,226 INFO L124 PetriNetUnfolderBase]: 316/543 cut-off events. [2024-10-11 14:28:31,227 INFO L125 PetriNetUnfolderBase]: For 6757/6757 co-relation queries the response was YES. [2024-10-11 14:28:31,230 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. [2024-10-11 14:28:31,233 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 88 selfloop transitions, 94 changer transitions 0/183 dead transitions. [2024-10-11 14:28:31,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 183 transitions, 2583 flow [2024-10-11 14:28:31,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:28:31,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:28:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 125 transitions. [2024-10-11 14:28:31,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-10-11 14:28:31,235 INFO L175 Difference]: Start difference. First operand has 142 places, 155 transitions, 1992 flow. Second operand 16 states and 125 transitions. [2024-10-11 14:28:31,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 183 transitions, 2583 flow [2024-10-11 14:28:31,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 183 transitions, 2329 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:31,264 INFO L231 Difference]: Finished difference. Result has 152 places, 158 transitions, 2052 flow [2024-10-11 14:28:31,264 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} [2024-10-11 14:28:31,265 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 132 predicate places. [2024-10-11 14:28:31,265 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 158 transitions, 2052 flow [2024-10-11 14:28:31,265 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) [2024-10-11 14:28:31,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:31,265 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:31,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-11 14:28:31,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-11 14:28:31,466 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:31,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:31,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1784060601, now seen corresponding path program 13 times [2024-10-11 14:28:31,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:31,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239401873] [2024-10-11 14:28:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:31,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239401873] [2024-10-11 14:28:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239401873] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318747697] [2024-10-11 14:28:31,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:31,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:31,536 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:31,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 14:28:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:31,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:31,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:31,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:31,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318747697] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:31,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:31,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824745417] [2024-10-11 14:28:31,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:31,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:31,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:31,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:31,700 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) [2024-10-11 14:28:31,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:31,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:31,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:31,954 INFO L124 PetriNetUnfolderBase]: 347/587 cut-off events. [2024-10-11 14:28:31,954 INFO L125 PetriNetUnfolderBase]: For 7034/7034 co-relation queries the response was YES. [2024-10-11 14:28:31,956 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. [2024-10-11 14:28:31,960 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 129 selfloop transitions, 71 changer transitions 0/201 dead transitions. [2024-10-11 14:28:31,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 201 transitions, 2863 flow [2024-10-11 14:28:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:28:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:28:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 129 transitions. [2024-10-11 14:28:31,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4215686274509804 [2024-10-11 14:28:31,962 INFO L175 Difference]: Start difference. First operand has 152 places, 158 transitions, 2052 flow. Second operand 17 states and 129 transitions. [2024-10-11 14:28:31,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 201 transitions, 2863 flow [2024-10-11 14:28:31,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 201 transitions, 2630 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-10-11 14:28:31,992 INFO L231 Difference]: Finished difference. Result has 159 places, 177 transitions, 2327 flow [2024-10-11 14:28:31,992 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} [2024-10-11 14:28:31,993 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 139 predicate places. [2024-10-11 14:28:31,993 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 177 transitions, 2327 flow [2024-10-11 14:28:31,993 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) [2024-10-11 14:28:31,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:31,993 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:32,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:32,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-11 14:28:32,194 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:32,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 725553499, now seen corresponding path program 14 times [2024-10-11 14:28:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:32,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506456767] [2024-10-11 14:28:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:32,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506456767] [2024-10-11 14:28:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506456767] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129585927] [2024-10-11 14:28:32,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:32,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:32,276 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:32,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-11 14:28:32,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:32,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:32,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:32,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:32,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129585927] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:32,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:32,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:32,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47196799] [2024-10-11 14:28:32,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:32,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:32,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:32,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:32,416 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:32,417 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) [2024-10-11 14:28:32,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:32,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:32,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:32,631 INFO L124 PetriNetUnfolderBase]: 341/581 cut-off events. [2024-10-11 14:28:32,631 INFO L125 PetriNetUnfolderBase]: For 7020/7020 co-relation queries the response was YES. [2024-10-11 14:28:32,634 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. [2024-10-11 14:28:32,637 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 127 selfloop transitions, 64 changer transitions 4/196 dead transitions. [2024-10-11 14:28:32,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 196 transitions, 2846 flow [2024-10-11 14:28:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:28:32,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:28:32,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 97 transitions. [2024-10-11 14:28:32,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-10-11 14:28:32,639 INFO L175 Difference]: Start difference. First operand has 159 places, 177 transitions, 2327 flow. Second operand 12 states and 97 transitions. [2024-10-11 14:28:32,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 196 transitions, 2846 flow [2024-10-11 14:28:32,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 196 transitions, 2544 flow, removed 111 selfloop flow, removed 9 redundant places. [2024-10-11 14:28:32,676 INFO L231 Difference]: Finished difference. Result has 161 places, 173 transitions, 2127 flow [2024-10-11 14:28:32,676 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} [2024-10-11 14:28:32,678 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 141 predicate places. [2024-10-11 14:28:32,678 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 173 transitions, 2127 flow [2024-10-11 14:28:32,682 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) [2024-10-11 14:28:32,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:32,682 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:32,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:32,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-11 14:28:32,883 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:32,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash -489041684, now seen corresponding path program 15 times [2024-10-11 14:28:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677117944] [2024-10-11 14:28:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:32,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:32,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:32,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677117944] [2024-10-11 14:28:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677117944] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:32,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290781814] [2024-10-11 14:28:32,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:32,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:32,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:32,954 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:32,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-11 14:28:33,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:28:33,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:33,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:33,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:33,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290781814] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:33,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:33,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 14:28:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126747859] [2024-10-11 14:28:33,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:33,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:33,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:33,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:33,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:33,082 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) [2024-10-11 14:28:33,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:33,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:33,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:33,323 INFO L124 PetriNetUnfolderBase]: 450/748 cut-off events. [2024-10-11 14:28:33,324 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-10-11 14:28:33,327 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. [2024-10-11 14:28:33,332 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 100 selfloop transitions, 154 changer transitions 0/255 dead transitions. [2024-10-11 14:28:33,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 255 transitions, 3583 flow [2024-10-11 14:28:33,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:28:33,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:28:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 134 transitions. [2024-10-11 14:28:33,333 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-10-11 14:28:33,333 INFO L175 Difference]: Start difference. First operand has 161 places, 173 transitions, 2127 flow. Second operand 17 states and 134 transitions. [2024-10-11 14:28:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 255 transitions, 3583 flow [2024-10-11 14:28:33,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 255 transitions, 3395 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-10-11 14:28:33,367 INFO L231 Difference]: Finished difference. Result has 173 places, 229 transitions, 3281 flow [2024-10-11 14:28:33,367 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} [2024-10-11 14:28:33,368 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 153 predicate places. [2024-10-11 14:28:33,368 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 229 transitions, 3281 flow [2024-10-11 14:28:33,368 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) [2024-10-11 14:28:33,368 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:33,368 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:33,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-11 14:28:33,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-11 14:28:33,569 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:33,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:33,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1498627924, now seen corresponding path program 16 times [2024-10-11 14:28:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:33,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175747487] [2024-10-11 14:28:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:33,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175747487] [2024-10-11 14:28:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175747487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551623412] [2024-10-11 14:28:33,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:33,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:33,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:33,649 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:33,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-11 14:28:33,704 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:33,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:33,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:33,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:33,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:33,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:28:33,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551623412] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:33,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:33,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 14:28:33,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552523632] [2024-10-11 14:28:33,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:33,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:33,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:33,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:33,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:33,769 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) [2024-10-11 14:28:33,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:33,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:33,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:34,016 INFO L124 PetriNetUnfolderBase]: 450/752 cut-off events. [2024-10-11 14:28:34,016 INFO L125 PetriNetUnfolderBase]: For 9907/9907 co-relation queries the response was YES. [2024-10-11 14:28:34,020 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. [2024-10-11 14:28:34,025 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 118 selfloop transitions, 130 changer transitions 2/251 dead transitions. [2024-10-11 14:28:34,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 251 transitions, 3950 flow [2024-10-11 14:28:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:28:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:28:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 108 transitions. [2024-10-11 14:28:34,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-10-11 14:28:34,027 INFO L175 Difference]: Start difference. First operand has 173 places, 229 transitions, 3281 flow. Second operand 14 states and 108 transitions. [2024-10-11 14:28:34,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 251 transitions, 3950 flow [2024-10-11 14:28:34,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 251 transitions, 3615 flow, removed 138 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:34,067 INFO L231 Difference]: Finished difference. Result has 182 places, 229 transitions, 3220 flow [2024-10-11 14:28:34,067 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} [2024-10-11 14:28:34,067 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 162 predicate places. [2024-10-11 14:28:34,067 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 229 transitions, 3220 flow [2024-10-11 14:28:34,068 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) [2024-10-11 14:28:34,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:34,068 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:34,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-11 14:28:34,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:34,269 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:34,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1306934376, now seen corresponding path program 17 times [2024-10-11 14:28:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807416254] [2024-10-11 14:28:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:34,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807416254] [2024-10-11 14:28:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807416254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:34,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887796389] [2024-10-11 14:28:34,345 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:34,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:34,347 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:34,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-11 14:28:34,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:34,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:34,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:34,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:34,466 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:34,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887796389] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:34,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:34,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 14:28:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888684689] [2024-10-11 14:28:34,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:34,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:34,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:34,501 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) [2024-10-11 14:28:34,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:34,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:34,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:34,770 INFO L124 PetriNetUnfolderBase]: 492/814 cut-off events. [2024-10-11 14:28:34,771 INFO L125 PetriNetUnfolderBase]: For 10454/10454 co-relation queries the response was YES. [2024-10-11 14:28:34,774 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. [2024-10-11 14:28:34,778 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 131 selfloop transitions, 140 changer transitions 4/276 dead transitions. [2024-10-11 14:28:34,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 276 transitions, 4297 flow [2024-10-11 14:28:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:28:34,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:28:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 111 transitions. [2024-10-11 14:28:34,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-10-11 14:28:34,779 INFO L175 Difference]: Start difference. First operand has 182 places, 229 transitions, 3220 flow. Second operand 15 states and 111 transitions. [2024-10-11 14:28:34,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 276 transitions, 4297 flow [2024-10-11 14:28:34,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 276 transitions, 4008 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-10-11 14:28:34,813 INFO L231 Difference]: Finished difference. Result has 189 places, 250 transitions, 3659 flow [2024-10-11 14:28:34,814 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} [2024-10-11 14:28:34,814 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 169 predicate places. [2024-10-11 14:28:34,814 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 250 transitions, 3659 flow [2024-10-11 14:28:34,814 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) [2024-10-11 14:28:34,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:34,814 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:34,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-11 14:28:35,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:35,015 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:35,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:35,015 INFO L85 PathProgramCache]: Analyzing trace with hash 252511738, now seen corresponding path program 18 times [2024-10-11 14:28:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:35,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878678014] [2024-10-11 14:28:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:35,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878678014] [2024-10-11 14:28:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878678014] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062684270] [2024-10-11 14:28:35,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:35,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:35,091 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:35,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-11 14:28:35,153 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-11 14:28:35,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:35,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:35,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:35,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:35,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062684270] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:35,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 14:28:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114974364] [2024-10-11 14:28:35,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:35,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:35,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:35,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:35,257 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) [2024-10-11 14:28:35,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:35,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:35,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:35,695 INFO L124 PetriNetUnfolderBase]: 587/973 cut-off events. [2024-10-11 14:28:35,695 INFO L125 PetriNetUnfolderBase]: For 14617/14617 co-relation queries the response was YES. [2024-10-11 14:28:35,700 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. [2024-10-11 14:28:35,704 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 164 selfloop transitions, 171 changer transitions 0/336 dead transitions. [2024-10-11 14:28:35,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 336 transitions, 5346 flow [2024-10-11 14:28:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:28:35,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:28:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 168 transitions. [2024-10-11 14:28:35,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057971014492754 [2024-10-11 14:28:35,706 INFO L175 Difference]: Start difference. First operand has 189 places, 250 transitions, 3659 flow. Second operand 23 states and 168 transitions. [2024-10-11 14:28:35,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 336 transitions, 5346 flow [2024-10-11 14:28:35,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 336 transitions, 5140 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-10-11 14:28:35,757 INFO L231 Difference]: Finished difference. Result has 209 places, 300 transitions, 4780 flow [2024-10-11 14:28:35,758 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} [2024-10-11 14:28:35,758 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 189 predicate places. [2024-10-11 14:28:35,758 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 300 transitions, 4780 flow [2024-10-11 14:28:35,758 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) [2024-10-11 14:28:35,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:35,758 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:35,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-11 14:28:35,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-11 14:28:35,959 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:35,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash 2145919580, now seen corresponding path program 19 times [2024-10-11 14:28:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:35,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692879308] [2024-10-11 14:28:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:35,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:35,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692879308] [2024-10-11 14:28:36,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692879308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114900592] [2024-10-11 14:28:36,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:36,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:36,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:36,034 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:36,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-11 14:28:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:36,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:36,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:36,147 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114900592] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:36,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:36,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 14:28:36,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537272830] [2024-10-11 14:28:36,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:36,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:36,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:36,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:36,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:36,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:36,177 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) [2024-10-11 14:28:36,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:36,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:36,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:36,540 INFO L124 PetriNetUnfolderBase]: 632/1044 cut-off events. [2024-10-11 14:28:36,540 INFO L125 PetriNetUnfolderBase]: For 20399/20399 co-relation queries the response was YES. [2024-10-11 14:28:36,545 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. [2024-10-11 14:28:36,550 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 293 selfloop transitions, 59 changer transitions 0/353 dead transitions. [2024-10-11 14:28:36,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 353 transitions, 6356 flow [2024-10-11 14:28:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:28:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:28:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 145 transitions. [2024-10-11 14:28:36,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4239766081871345 [2024-10-11 14:28:36,551 INFO L175 Difference]: Start difference. First operand has 209 places, 300 transitions, 4780 flow. Second operand 19 states and 145 transitions. [2024-10-11 14:28:36,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 353 transitions, 6356 flow [2024-10-11 14:28:36,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 353 transitions, 6148 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-10-11 14:28:36,643 INFO L231 Difference]: Finished difference. Result has 230 places, 325 transitions, 5456 flow [2024-10-11 14:28:36,643 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} [2024-10-11 14:28:36,643 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 210 predicate places. [2024-10-11 14:28:36,643 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 325 transitions, 5456 flow [2024-10-11 14:28:36,643 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) [2024-10-11 14:28:36,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:36,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:36,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:36,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:36,844 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:36,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -915188880, now seen corresponding path program 20 times [2024-10-11 14:28:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088731082] [2024-10-11 14:28:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:36,915 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:36,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:36,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088731082] [2024-10-11 14:28:36,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088731082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:36,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305827333] [2024-10-11 14:28:36,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:36,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:36,918 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:36,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-11 14:28:36,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:36,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:36,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:36,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305827333] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:37,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 14:28:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948040847] [2024-10-11 14:28:37,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:37,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:37,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:37,044 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) [2024-10-11 14:28:37,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:37,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:37,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:37,337 INFO L124 PetriNetUnfolderBase]: 660/1099 cut-off events. [2024-10-11 14:28:37,337 INFO L125 PetriNetUnfolderBase]: For 26923/26923 co-relation queries the response was YES. [2024-10-11 14:28:37,342 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. [2024-10-11 14:28:37,347 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 246 selfloop transitions, 103 changer transitions 5/355 dead transitions. [2024-10-11 14:28:37,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 355 transitions, 6805 flow [2024-10-11 14:28:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:28:37,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:28:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2024-10-11 14:28:37,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-10-11 14:28:37,348 INFO L175 Difference]: Start difference. First operand has 230 places, 325 transitions, 5456 flow. Second operand 7 states and 59 transitions. [2024-10-11 14:28:37,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 355 transitions, 6805 flow [2024-10-11 14:28:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 355 transitions, 6077 flow, removed 343 selfloop flow, removed 8 redundant places. [2024-10-11 14:28:37,461 INFO L231 Difference]: Finished difference. Result has 232 places, 332 transitions, 5355 flow [2024-10-11 14:28:37,461 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} [2024-10-11 14:28:37,461 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 212 predicate places. [2024-10-11 14:28:37,461 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 332 transitions, 5355 flow [2024-10-11 14:28:37,462 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) [2024-10-11 14:28:37,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:37,462 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:37,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-11 14:28:37,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:37,662 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:37,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:37,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1670164999, now seen corresponding path program 21 times [2024-10-11 14:28:37,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:37,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494572682] [2024-10-11 14:28:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494572682] [2024-10-11 14:28:37,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494572682] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:37,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981251096] [2024-10-11 14:28:37,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:37,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:37,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:37,726 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:37,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-11 14:28:37,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:28:37,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:37,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:37,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981251096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:37,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-11 14:28:37,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453874165] [2024-10-11 14:28:37,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:37,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 14:28:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:37,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 14:28:37,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-11 14:28:37,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:37,830 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) [2024-10-11 14:28:37,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:37,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:37,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:38,203 INFO L124 PetriNetUnfolderBase]: 669/1110 cut-off events. [2024-10-11 14:28:38,204 INFO L125 PetriNetUnfolderBase]: For 25977/25977 co-relation queries the response was YES. [2024-10-11 14:28:38,213 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. [2024-10-11 14:28:38,219 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 227 selfloop transitions, 140 changer transitions 0/368 dead transitions. [2024-10-11 14:28:38,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 368 transitions, 6635 flow [2024-10-11 14:28:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:28:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:28:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 83 transitions. [2024-10-11 14:28:38,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-10-11 14:28:38,220 INFO L175 Difference]: Start difference. First operand has 232 places, 332 transitions, 5355 flow. Second operand 10 states and 83 transitions. [2024-10-11 14:28:38,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 368 transitions, 6635 flow [2024-10-11 14:28:38,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 368 transitions, 6481 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-10-11 14:28:38,330 INFO L231 Difference]: Finished difference. Result has 238 places, 339 transitions, 5712 flow [2024-10-11 14:28:38,330 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} [2024-10-11 14:28:38,330 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 218 predicate places. [2024-10-11 14:28:38,331 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 339 transitions, 5712 flow [2024-10-11 14:28:38,331 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) [2024-10-11 14:28:38,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:38,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:38,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:38,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-11 14:28:38,531 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:38,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -305310556, now seen corresponding path program 22 times [2024-10-11 14:28:38,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:38,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157608930] [2024-10-11 14:28:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:38,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157608930] [2024-10-11 14:28:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157608930] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199354710] [2024-10-11 14:28:38,605 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:38,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:38,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:38,607 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:38,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-11 14:28:38,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:38,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:38,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:38,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:38,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199354710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:38,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:28:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55156724] [2024-10-11 14:28:38,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:38,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:38,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:38,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:38,746 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) [2024-10-11 14:28:38,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:38,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:38,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:39,003 INFO L124 PetriNetUnfolderBase]: 668/1111 cut-off events. [2024-10-11 14:28:39,003 INFO L125 PetriNetUnfolderBase]: For 27162/27162 co-relation queries the response was YES. [2024-10-11 14:28:39,009 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. [2024-10-11 14:28:39,015 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 234 selfloop transitions, 122 changer transitions 5/362 dead transitions. [2024-10-11 14:28:39,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 362 transitions, 6838 flow [2024-10-11 14:28:39,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 84 transitions. [2024-10-11 14:28:39,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 14:28:39,017 INFO L175 Difference]: Start difference. First operand has 238 places, 339 transitions, 5712 flow. Second operand 11 states and 84 transitions. [2024-10-11 14:28:39,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 362 transitions, 6838 flow [2024-10-11 14:28:39,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 362 transitions, 6616 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:39,177 INFO L231 Difference]: Finished difference. Result has 247 places, 341 transitions, 5888 flow [2024-10-11 14:28:39,177 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} [2024-10-11 14:28:39,177 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 227 predicate places. [2024-10-11 14:28:39,178 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 341 transitions, 5888 flow [2024-10-11 14:28:39,178 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) [2024-10-11 14:28:39,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:39,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:39,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:39,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-11 14:28:39,379 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:39,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:39,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1154278771, now seen corresponding path program 23 times [2024-10-11 14:28:39,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:39,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296443585] [2024-10-11 14:28:39,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:39,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296443585] [2024-10-11 14:28:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296443585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473481973] [2024-10-11 14:28:39,463 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:39,465 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:39,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-11 14:28:39,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:28:39,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:39,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:39,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:39,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:39,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:39,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473481973] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:39,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:39,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:39,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630359683] [2024-10-11 14:28:39,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:39,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:39,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:39,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:39,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:39,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:39,587 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) [2024-10-11 14:28:39,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:39,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:39,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:39,955 INFO L124 PetriNetUnfolderBase]: 698/1153 cut-off events. [2024-10-11 14:28:39,955 INFO L125 PetriNetUnfolderBase]: For 31691/31691 co-relation queries the response was YES. [2024-10-11 14:28:39,962 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. [2024-10-11 14:28:39,968 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 286 selfloop transitions, 98 changer transitions 0/385 dead transitions. [2024-10-11 14:28:39,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 385 transitions, 7420 flow [2024-10-11 14:28:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:28:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:28:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 122 transitions. [2024-10-11 14:28:39,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-10-11 14:28:39,971 INFO L175 Difference]: Start difference. First operand has 247 places, 341 transitions, 5888 flow. Second operand 16 states and 122 transitions. [2024-10-11 14:28:39,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 385 transitions, 7420 flow [2024-10-11 14:28:40,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 385 transitions, 7024 flow, removed 63 selfloop flow, removed 12 redundant places. [2024-10-11 14:28:40,161 INFO L231 Difference]: Finished difference. Result has 254 places, 361 transitions, 6248 flow [2024-10-11 14:28:40,161 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} [2024-10-11 14:28:40,162 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 234 predicate places. [2024-10-11 14:28:40,162 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 361 transitions, 6248 flow [2024-10-11 14:28:40,162 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) [2024-10-11 14:28:40,162 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:40,162 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:40,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-11 14:28:40,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,27 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:40,363 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:40,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -909865905, now seen corresponding path program 24 times [2024-10-11 14:28:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:40,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401735750] [2024-10-11 14:28:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:40,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:40,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:40,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401735750] [2024-10-11 14:28:40,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401735750] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:40,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222638695] [2024-10-11 14:28:40,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:40,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:40,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:40,437 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:40,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-11 14:28:40,503 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:28:40,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:40,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:40,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:40,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:40,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222638695] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:40,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:40,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 14:28:40,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048904867] [2024-10-11 14:28:40,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:40,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:40,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:40,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:40,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:40,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:40,576 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) [2024-10-11 14:28:40,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:40,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:40,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:40,976 INFO L124 PetriNetUnfolderBase]: 783/1280 cut-off events. [2024-10-11 14:28:40,976 INFO L125 PetriNetUnfolderBase]: For 41666/41666 co-relation queries the response was YES. [2024-10-11 14:28:40,983 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. [2024-10-11 14:28:40,988 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 281 selfloop transitions, 150 changer transitions 0/432 dead transitions. [2024-10-11 14:28:40,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 432 transitions, 8604 flow [2024-10-11 14:28:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:28:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:28:40,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 131 transitions. [2024-10-11 14:28:40,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42810457516339867 [2024-10-11 14:28:40,990 INFO L175 Difference]: Start difference. First operand has 254 places, 361 transitions, 6248 flow. Second operand 17 states and 131 transitions. [2024-10-11 14:28:40,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 432 transitions, 8604 flow [2024-10-11 14:28:41,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 432 transitions, 7948 flow, removed 263 selfloop flow, removed 7 redundant places. [2024-10-11 14:28:41,137 INFO L231 Difference]: Finished difference. Result has 271 places, 411 transitions, 7409 flow [2024-10-11 14:28:41,137 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} [2024-10-11 14:28:41,137 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 251 predicate places. [2024-10-11 14:28:41,137 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 411 transitions, 7409 flow [2024-10-11 14:28:41,138 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) [2024-10-11 14:28:41,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:41,138 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:41,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:41,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,28 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:41,338 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:41,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:41,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1089475675, now seen corresponding path program 25 times [2024-10-11 14:28:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:41,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434306961] [2024-10-11 14:28:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:41,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:41,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:41,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434306961] [2024-10-11 14:28:41,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434306961] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:41,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210619679] [2024-10-11 14:28:41,405 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:41,407 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:41,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-11 14:28:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:41,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:41,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:41,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210619679] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:41,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:41,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025307458] [2024-10-11 14:28:41,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:41,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:41,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:41,538 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) [2024-10-11 14:28:41,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:41,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:41,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:41,875 INFO L124 PetriNetUnfolderBase]: 782/1282 cut-off events. [2024-10-11 14:28:41,875 INFO L125 PetriNetUnfolderBase]: For 40185/40185 co-relation queries the response was YES. [2024-10-11 14:28:41,883 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. [2024-10-11 14:28:41,887 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 315 selfloop transitions, 112 changer transitions 4/432 dead transitions. [2024-10-11 14:28:41,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 432 transitions, 8531 flow [2024-10-11 14:28:41,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:28:41,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:28:41,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 100 transitions. [2024-10-11 14:28:41,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2024-10-11 14:28:41,888 INFO L175 Difference]: Start difference. First operand has 271 places, 411 transitions, 7409 flow. Second operand 13 states and 100 transitions. [2024-10-11 14:28:41,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 432 transitions, 8531 flow [2024-10-11 14:28:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 432 transitions, 7911 flow, removed 303 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:42,058 INFO L231 Difference]: Finished difference. Result has 281 places, 409 transitions, 7017 flow [2024-10-11 14:28:42,058 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} [2024-10-11 14:28:42,058 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 261 predicate places. [2024-10-11 14:28:42,058 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 409 transitions, 7017 flow [2024-10-11 14:28:42,059 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) [2024-10-11 14:28:42,059 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:42,059 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:42,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:42,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-11 14:28:42,259 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:42,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1860200650, now seen corresponding path program 26 times [2024-10-11 14:28:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938127828] [2024-10-11 14:28:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938127828] [2024-10-11 14:28:42,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938127828] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:42,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923600637] [2024-10-11 14:28:42,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:42,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:42,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:42,326 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:42,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-11 14:28:42,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:42,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:42,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:42,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:42,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923600637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:42,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:42,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448379179] [2024-10-11 14:28:42,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:42,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:42,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:42,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:42,439 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) [2024-10-11 14:28:42,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:42,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:42,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:42,762 INFO L124 PetriNetUnfolderBase]: 823/1336 cut-off events. [2024-10-11 14:28:42,762 INFO L125 PetriNetUnfolderBase]: For 29931/29931 co-relation queries the response was YES. [2024-10-11 14:28:42,771 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. [2024-10-11 14:28:42,775 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 285 selfloop transitions, 162 changer transitions 3/451 dead transitions. [2024-10-11 14:28:42,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 451 transitions, 8663 flow [2024-10-11 14:28:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:28:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:28:42,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 94 transitions. [2024-10-11 14:28:42,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-10-11 14:28:42,777 INFO L175 Difference]: Start difference. First operand has 281 places, 409 transitions, 7017 flow. Second operand 12 states and 94 transitions. [2024-10-11 14:28:42,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 451 transitions, 8663 flow [2024-10-11 14:28:42,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 451 transitions, 8393 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-10-11 14:28:42,923 INFO L231 Difference]: Finished difference. Result has 280 places, 427 transitions, 7668 flow [2024-10-11 14:28:42,923 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} [2024-10-11 14:28:42,924 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 260 predicate places. [2024-10-11 14:28:42,924 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 427 transitions, 7668 flow [2024-10-11 14:28:42,924 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) [2024-10-11 14:28:42,924 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:42,924 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:42,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-11 14:28:43,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,30 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:43,125 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:43,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 919858889, now seen corresponding path program 27 times [2024-10-11 14:28:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139588831] [2024-10-11 14:28:43,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:43,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139588831] [2024-10-11 14:28:43,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139588831] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:43,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568502760] [2024-10-11 14:28:43,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:43,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:43,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:43,198 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:43,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-11 14:28:43,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:28:43,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:43,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:43,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:43,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:43,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568502760] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:43,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:43,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 14:28:43,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083027221] [2024-10-11 14:28:43,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:43,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:43,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:43,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:43,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:43,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:43,321 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) [2024-10-11 14:28:43,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:43,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:43,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:43,724 INFO L124 PetriNetUnfolderBase]: 850/1375 cut-off events. [2024-10-11 14:28:43,724 INFO L125 PetriNetUnfolderBase]: For 32487/32487 co-relation queries the response was YES. [2024-10-11 14:28:43,733 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. [2024-10-11 14:28:43,738 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 311 selfloop transitions, 151 changer transitions 9/472 dead transitions. [2024-10-11 14:28:43,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 472 transitions, 9214 flow [2024-10-11 14:28:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:28:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:28:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 120 transitions. [2024-10-11 14:28:43,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-10-11 14:28:43,739 INFO L175 Difference]: Start difference. First operand has 280 places, 427 transitions, 7668 flow. Second operand 16 states and 120 transitions. [2024-10-11 14:28:43,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 472 transitions, 9214 flow [2024-10-11 14:28:43,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 472 transitions, 8725 flow, removed 146 selfloop flow, removed 10 redundant places. [2024-10-11 14:28:43,925 INFO L231 Difference]: Finished difference. Result has 287 places, 441 transitions, 7898 flow [2024-10-11 14:28:43,925 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} [2024-10-11 14:28:43,925 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 267 predicate places. [2024-10-11 14:28:43,925 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 441 transitions, 7898 flow [2024-10-11 14:28:43,926 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) [2024-10-11 14:28:43,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:43,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:43,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:44,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,31 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:44,126 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:44,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1082460155, now seen corresponding path program 28 times [2024-10-11 14:28:44,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:44,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90524297] [2024-10-11 14:28:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:44,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:44,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:44,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90524297] [2024-10-11 14:28:44,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90524297] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:44,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563479273] [2024-10-11 14:28:44,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:44,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:44,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:44,204 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:44,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-11 14:28:44,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:44,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:44,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:44,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:44,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:44,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563479273] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:44,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:44,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-11 14:28:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305916316] [2024-10-11 14:28:44,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:44,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:44,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:44,353 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) [2024-10-11 14:28:44,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:44,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:44,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:44,860 INFO L124 PetriNetUnfolderBase]: 897/1451 cut-off events. [2024-10-11 14:28:44,861 INFO L125 PetriNetUnfolderBase]: For 32635/32635 co-relation queries the response was YES. [2024-10-11 14:28:44,870 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. [2024-10-11 14:28:44,877 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 352 selfloop transitions, 137 changer transitions 0/490 dead transitions. [2024-10-11 14:28:44,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 490 transitions, 9570 flow [2024-10-11 14:28:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:28:44,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:28:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 102 transitions. [2024-10-11 14:28:44,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-10-11 14:28:44,878 INFO L175 Difference]: Start difference. First operand has 287 places, 441 transitions, 7898 flow. Second operand 14 states and 102 transitions. [2024-10-11 14:28:44,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 490 transitions, 9570 flow [2024-10-11 14:28:45,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 490 transitions, 9218 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-10-11 14:28:45,041 INFO L231 Difference]: Finished difference. Result has 292 places, 470 transitions, 8416 flow [2024-10-11 14:28:45,041 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} [2024-10-11 14:28:45,041 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 272 predicate places. [2024-10-11 14:28:45,042 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 470 transitions, 8416 flow [2024-10-11 14:28:45,042 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) [2024-10-11 14:28:45,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:45,042 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:45,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:45,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:45,243 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 719625231, now seen corresponding path program 29 times [2024-10-11 14:28:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:45,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625208338] [2024-10-11 14:28:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:45,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625208338] [2024-10-11 14:28:45,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625208338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:45,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701366426] [2024-10-11 14:28:45,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:45,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:45,321 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:45,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-11 14:28:45,383 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:45,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:45,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:45,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701366426] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:45,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:45,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-10-11 14:28:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537290051] [2024-10-11 14:28:45,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:45,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:45,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:45,485 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) [2024-10-11 14:28:45,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:45,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:45,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:46,003 INFO L124 PetriNetUnfolderBase]: 978/1578 cut-off events. [2024-10-11 14:28:46,003 INFO L125 PetriNetUnfolderBase]: For 33615/33615 co-relation queries the response was YES. [2024-10-11 14:28:46,014 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. [2024-10-11 14:28:46,019 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 350 selfloop transitions, 194 changer transitions 0/545 dead transitions. [2024-10-11 14:28:46,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 545 transitions, 10594 flow [2024-10-11 14:28:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:28:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:28:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 160 transitions. [2024-10-11 14:28:46,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3864734299516908 [2024-10-11 14:28:46,020 INFO L175 Difference]: Start difference. First operand has 292 places, 470 transitions, 8416 flow. Second operand 23 states and 160 transitions. [2024-10-11 14:28:46,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 545 transitions, 10594 flow [2024-10-11 14:28:46,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 545 transitions, 10259 flow, removed 85 selfloop flow, removed 10 redundant places. [2024-10-11 14:28:46,179 INFO L231 Difference]: Finished difference. Result has 311 places, 517 transitions, 9528 flow [2024-10-11 14:28:46,179 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} [2024-10-11 14:28:46,180 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 291 predicate places. [2024-10-11 14:28:46,180 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 517 transitions, 9528 flow [2024-10-11 14:28:46,180 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) [2024-10-11 14:28:46,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:46,180 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:46,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:46,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-10-11 14:28:46,382 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:46,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1305474036, now seen corresponding path program 30 times [2024-10-11 14:28:46,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:46,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746904203] [2024-10-11 14:28:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746904203] [2024-10-11 14:28:46,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746904203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:46,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158616439] [2024-10-11 14:28:46,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:46,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:46,452 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:46,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-11 14:28:46,509 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:28:46,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:46,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:46,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:46,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:46,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158616439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:46,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:46,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-10-11 14:28:46,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909275593] [2024-10-11 14:28:46,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:46,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:28:46,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:46,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:28:46,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:28:46,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:46,580 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) [2024-10-11 14:28:46,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:46,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:46,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:47,025 INFO L124 PetriNetUnfolderBase]: 1004/1618 cut-off events. [2024-10-11 14:28:47,026 INFO L125 PetriNetUnfolderBase]: For 39548/39548 co-relation queries the response was YES. [2024-10-11 14:28:47,037 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. [2024-10-11 14:28:47,044 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 443 selfloop transitions, 112 changer transitions 0/556 dead transitions. [2024-10-11 14:28:47,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 556 transitions, 11169 flow [2024-10-11 14:28:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:28:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:28:47,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 112 transitions. [2024-10-11 14:28:47,045 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-10-11 14:28:47,045 INFO L175 Difference]: Start difference. First operand has 311 places, 517 transitions, 9528 flow. Second operand 15 states and 112 transitions. [2024-10-11 14:28:47,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 556 transitions, 11169 flow [2024-10-11 14:28:47,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 556 transitions, 10973 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-10-11 14:28:47,233 INFO L231 Difference]: Finished difference. Result has 321 places, 535 transitions, 10102 flow [2024-10-11 14:28:47,234 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} [2024-10-11 14:28:47,234 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places. [2024-10-11 14:28:47,234 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 535 transitions, 10102 flow [2024-10-11 14:28:47,234 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) [2024-10-11 14:28:47,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:47,234 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:47,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-10-11 14:28:47,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,34 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:47,435 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:47,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1267573352, now seen corresponding path program 31 times [2024-10-11 14:28:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:47,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862470548] [2024-10-11 14:28:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:47,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:47,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862470548] [2024-10-11 14:28:47,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862470548] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:47,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043418028] [2024-10-11 14:28:47,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:47,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:47,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:47,502 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:47,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-11 14:28:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:47,563 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:28:47,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:47,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:47,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043418028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:47,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:47,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:28:47,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876436702] [2024-10-11 14:28:47,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:47,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:28:47,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:28:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:28:47,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:47,639 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) [2024-10-11 14:28:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:48,285 INFO L124 PetriNetUnfolderBase]: 1006/1617 cut-off events. [2024-10-11 14:28:48,285 INFO L125 PetriNetUnfolderBase]: For 41471/41471 co-relation queries the response was YES. [2024-10-11 14:28:48,297 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. [2024-10-11 14:28:48,303 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 366 selfloop transitions, 195 changer transitions 0/562 dead transitions. [2024-10-11 14:28:48,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 562 transitions, 11482 flow [2024-10-11 14:28:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:28:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:28:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 121 transitions. [2024-10-11 14:28:48,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-10-11 14:28:48,304 INFO L175 Difference]: Start difference. First operand has 321 places, 535 transitions, 10102 flow. Second operand 16 states and 121 transitions. [2024-10-11 14:28:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 562 transitions, 11482 flow [2024-10-11 14:28:48,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 562 transitions, 11291 flow, removed 62 selfloop flow, removed 11 redundant places. [2024-10-11 14:28:48,505 INFO L231 Difference]: Finished difference. Result has 325 places, 537 transitions, 10402 flow [2024-10-11 14:28:48,506 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} [2024-10-11 14:28:48,506 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 305 predicate places. [2024-10-11 14:28:48,506 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 537 transitions, 10402 flow [2024-10-11 14:28:48,506 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) [2024-10-11 14:28:48,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:48,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:48,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:48,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-11 14:28:48,707 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:48,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2061910219, now seen corresponding path program 32 times [2024-10-11 14:28:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:48,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107462158] [2024-10-11 14:28:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:49,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107462158] [2024-10-11 14:28:49,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107462158] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:49,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227051882] [2024-10-11 14:28:49,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:28:49,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:49,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:49,034 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:49,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-11 14:28:49,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:28:49,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:49,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:49,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:49,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:49,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227051882] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:49,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:49,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-11 14:28:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782870271] [2024-10-11 14:28:49,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:49,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:28:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:28:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:28:49,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:49,429 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) [2024-10-11 14:28:49,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:49,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:49,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:50,153 INFO L124 PetriNetUnfolderBase]: 1180/1970 cut-off events. [2024-10-11 14:28:50,153 INFO L125 PetriNetUnfolderBase]: For 51418/51418 co-relation queries the response was YES. [2024-10-11 14:28:50,168 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. [2024-10-11 14:28:50,175 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 549 selfloop transitions, 109 changer transitions 12/671 dead transitions. [2024-10-11 14:28:50,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 671 transitions, 13987 flow [2024-10-11 14:28:50,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:50,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-10-11 14:28:50,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-11 14:28:50,176 INFO L175 Difference]: Start difference. First operand has 325 places, 537 transitions, 10402 flow. Second operand 11 states and 114 transitions. [2024-10-11 14:28:50,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 671 transitions, 13987 flow [2024-10-11 14:28:50,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 671 transitions, 13466 flow, removed 71 selfloop flow, removed 12 redundant places. [2024-10-11 14:28:50,427 INFO L231 Difference]: Finished difference. Result has 332 places, 597 transitions, 11624 flow [2024-10-11 14:28:50,427 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} [2024-10-11 14:28:50,428 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 312 predicate places. [2024-10-11 14:28:50,428 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 597 transitions, 11624 flow [2024-10-11 14:28:50,428 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) [2024-10-11 14:28:50,428 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:50,428 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:50,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-11 14:28:50,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-11 14:28:50,629 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:50,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:50,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1386347853, now seen corresponding path program 33 times [2024-10-11 14:28:50,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:50,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074176246] [2024-10-11 14:28:50,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:50,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:50,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:50,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:50,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074176246] [2024-10-11 14:28:50,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074176246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452036207] [2024-10-11 14:28:50,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:28:50,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:50,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:50,862 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:50,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-11 14:28:50,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:28:50,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:50,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:50,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:51,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:51,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452036207] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:51,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:51,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 14:28:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324527798] [2024-10-11 14:28:51,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:51,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:28:51,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:51,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:28:51,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:28:51,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:51,228 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) [2024-10-11 14:28:51,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:51,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:51,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:52,124 INFO L124 PetriNetUnfolderBase]: 1185/1987 cut-off events. [2024-10-11 14:28:52,124 INFO L125 PetriNetUnfolderBase]: For 53555/53555 co-relation queries the response was YES. [2024-10-11 14:28:52,148 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. [2024-10-11 14:28:52,158 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 545 selfloop transitions, 96 changer transitions 13/655 dead transitions. [2024-10-11 14:28:52,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 655 transitions, 13694 flow [2024-10-11 14:28:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:28:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:28:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-10-11 14:28:52,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-10-11 14:28:52,159 INFO L175 Difference]: Start difference. First operand has 332 places, 597 transitions, 11624 flow. Second operand 12 states and 110 transitions. [2024-10-11 14:28:52,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 655 transitions, 13694 flow [2024-10-11 14:28:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 655 transitions, 13354 flow, removed 169 selfloop flow, removed 3 redundant places. [2024-10-11 14:28:52,489 INFO L231 Difference]: Finished difference. Result has 344 places, 610 transitions, 11966 flow [2024-10-11 14:28:52,490 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} [2024-10-11 14:28:52,490 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 324 predicate places. [2024-10-11 14:28:52,490 INFO L471 AbstractCegarLoop]: Abstraction has has 344 places, 610 transitions, 11966 flow [2024-10-11 14:28:52,490 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) [2024-10-11 14:28:52,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:52,490 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:52,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:52,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:52,691 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:52,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:52,691 INFO L85 PathProgramCache]: Analyzing trace with hash -770088891, now seen corresponding path program 34 times [2024-10-11 14:28:52,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:52,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607371271] [2024-10-11 14:28:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607371271] [2024-10-11 14:28:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607371271] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683454001] [2024-10-11 14:28:52,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:28:52,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:52,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:52,900 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:52,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-11 14:28:52,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:28:52,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:52,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:52,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:53,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683454001] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:53,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:53,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 14:28:53,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099130670] [2024-10-11 14:28:53,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:53,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:28:53,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:53,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:28:53,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:28:53,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:53,255 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) [2024-10-11 14:28:53,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:53,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:53,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:54,059 INFO L124 PetriNetUnfolderBase]: 1171/1954 cut-off events. [2024-10-11 14:28:54,060 INFO L125 PetriNetUnfolderBase]: For 49051/49051 co-relation queries the response was YES. [2024-10-11 14:28:54,075 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. [2024-10-11 14:28:54,083 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 537 selfloop transitions, 114 changer transitions 4/656 dead transitions. [2024-10-11 14:28:54,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 656 transitions, 13749 flow [2024-10-11 14:28:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-10-11 14:28:54,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5303030303030303 [2024-10-11 14:28:54,084 INFO L175 Difference]: Start difference. First operand has 344 places, 610 transitions, 11966 flow. Second operand 11 states and 105 transitions. [2024-10-11 14:28:54,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 656 transitions, 13749 flow [2024-10-11 14:28:54,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 656 transitions, 13403 flow, removed 138 selfloop flow, removed 4 redundant places. [2024-10-11 14:28:54,397 INFO L231 Difference]: Finished difference. Result has 351 places, 617 transitions, 12084 flow [2024-10-11 14:28:54,397 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} [2024-10-11 14:28:54,398 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 331 predicate places. [2024-10-11 14:28:54,398 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 617 transitions, 12084 flow [2024-10-11 14:28:54,398 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) [2024-10-11 14:28:54,398 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:54,398 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:54,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:54,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-10-11 14:28:54,604 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:54,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:54,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1690331707, now seen corresponding path program 35 times [2024-10-11 14:28:54,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:54,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296985745] [2024-10-11 14:28:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:54,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296985745] [2024-10-11 14:28:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296985745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020513034] [2024-10-11 14:28:54,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:28:54,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:54,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:54,806 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:54,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-11 14:28:54,864 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:28:54,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:54,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:54,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:54,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:54,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:55,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020513034] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:55,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:55,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 14:28:55,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817561488] [2024-10-11 14:28:55,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:55,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:28:55,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:55,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:28:55,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:28:55,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:55,159 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) [2024-10-11 14:28:55,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:55,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:55,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:55,855 INFO L124 PetriNetUnfolderBase]: 1169/1944 cut-off events. [2024-10-11 14:28:55,856 INFO L125 PetriNetUnfolderBase]: For 49023/49023 co-relation queries the response was YES. [2024-10-11 14:28:55,883 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. [2024-10-11 14:28:55,895 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 531 selfloop transitions, 112 changer transitions 11/655 dead transitions. [2024-10-11 14:28:55,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 655 transitions, 13724 flow [2024-10-11 14:28:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:28:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:28:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-10-11 14:28:55,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-11 14:28:55,896 INFO L175 Difference]: Start difference. First operand has 351 places, 617 transitions, 12084 flow. Second operand 11 states and 104 transitions. [2024-10-11 14:28:55,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 655 transitions, 13724 flow [2024-10-11 14:28:56,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 655 transitions, 13451 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-10-11 14:28:56,217 INFO L231 Difference]: Finished difference. Result has 355 places, 616 transitions, 12061 flow [2024-10-11 14:28:56,218 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} [2024-10-11 14:28:56,218 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 335 predicate places. [2024-10-11 14:28:56,218 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 616 transitions, 12061 flow [2024-10-11 14:28:56,219 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) [2024-10-11 14:28:56,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:56,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:56,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-10-11 14:28:56,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-11 14:28:56,419 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:56,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:56,420 INFO L85 PathProgramCache]: Analyzing trace with hash 907908717, now seen corresponding path program 36 times [2024-10-11 14:28:56,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:56,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39458661] [2024-10-11 14:28:56,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:56,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:56,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:56,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39458661] [2024-10-11 14:28:56,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39458661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:56,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866421226] [2024-10-11 14:28:56,646 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:28:56,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:56,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:56,648 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:56,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-11 14:28:56,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:28:56,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:28:56,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:56,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:56,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866421226] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:57,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:57,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-11 14:28:57,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952358139] [2024-10-11 14:28:57,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:57,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:28:57,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:28:57,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:28:57,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:57,019 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) [2024-10-11 14:28:57,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:57,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:57,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:57,749 INFO L124 PetriNetUnfolderBase]: 1187/1981 cut-off events. [2024-10-11 14:28:57,749 INFO L125 PetriNetUnfolderBase]: For 51561/51561 co-relation queries the response was YES. [2024-10-11 14:28:57,765 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. [2024-10-11 14:28:57,772 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 576 selfloop transitions, 73 changer transitions 4/654 dead transitions. [2024-10-11 14:28:57,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 654 transitions, 13804 flow [2024-10-11 14:28:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:28:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:28:57,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-10-11 14:28:57,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-10-11 14:28:57,773 INFO L175 Difference]: Start difference. First operand has 355 places, 616 transitions, 12061 flow. Second operand 9 states and 80 transitions. [2024-10-11 14:28:57,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 654 transitions, 13804 flow [2024-10-11 14:28:58,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 654 transitions, 13525 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-10-11 14:28:58,064 INFO L231 Difference]: Finished difference. Result has 357 places, 632 transitions, 12343 flow [2024-10-11 14:28:58,065 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} [2024-10-11 14:28:58,065 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 337 predicate places. [2024-10-11 14:28:58,065 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 632 transitions, 12343 flow [2024-10-11 14:28:58,065 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) [2024-10-11 14:28:58,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:28:58,065 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:28:58,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-11 14:28:58,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-11 14:28:58,266 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:28:58,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:28:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash -809840343, now seen corresponding path program 37 times [2024-10-11 14:28:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:28:58,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869461241] [2024-10-11 14:28:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:28:58,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:28:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:58,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:28:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869461241] [2024-10-11 14:28:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869461241] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:28:58,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899975653] [2024-10-11 14:28:58,499 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:28:58,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:28:58,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:28:58,501 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:28:58,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-11 14:28:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:28:58,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:28:58,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:28:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:58,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:28:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:28:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899975653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:28:58,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:28:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-11 14:28:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933500728] [2024-10-11 14:28:58,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:28:58,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:28:58,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:28:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:28:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:28:58,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:28:58,879 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) [2024-10-11 14:28:58,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:28:58,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:28:58,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:28:59,693 INFO L124 PetriNetUnfolderBase]: 1227/2047 cut-off events. [2024-10-11 14:28:59,693 INFO L125 PetriNetUnfolderBase]: For 55564/55564 co-relation queries the response was YES. [2024-10-11 14:28:59,712 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. [2024-10-11 14:28:59,720 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 583 selfloop transitions, 88 changer transitions 8/680 dead transitions. [2024-10-11 14:28:59,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 680 transitions, 14310 flow [2024-10-11 14:28:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:28:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:28:59,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2024-10-11 14:28:59,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-10-11 14:28:59,721 INFO L175 Difference]: Start difference. First operand has 357 places, 632 transitions, 12343 flow. Second operand 9 states and 86 transitions. [2024-10-11 14:28:59,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 680 transitions, 14310 flow [2024-10-11 14:29:00,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 680 transitions, 14037 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:00,181 INFO L231 Difference]: Finished difference. Result has 362 places, 647 transitions, 12635 flow [2024-10-11 14:29:00,181 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} [2024-10-11 14:29:00,181 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 342 predicate places. [2024-10-11 14:29:00,181 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 647 transitions, 12635 flow [2024-10-11 14:29:00,182 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) [2024-10-11 14:29:00,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:00,182 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:00,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:00,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2024-10-11 14:29:00,382 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:00,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash -887594853, now seen corresponding path program 38 times [2024-10-11 14:29:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:00,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290686905] [2024-10-11 14:29:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:00,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:00,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290686905] [2024-10-11 14:29:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290686905] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:00,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548963593] [2024-10-11 14:29:00,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:00,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:00,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:00,578 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:00,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-11 14:29:00,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:00,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:00,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:00,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:00,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548963593] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:00,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-11 14:29:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504718957] [2024-10-11 14:29:00,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:00,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:29:00,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:29:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:00,948 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:00,948 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) [2024-10-11 14:29:00,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:00,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:00,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:01,640 INFO L124 PetriNetUnfolderBase]: 1220/2030 cut-off events. [2024-10-11 14:29:01,640 INFO L125 PetriNetUnfolderBase]: For 53489/53489 co-relation queries the response was YES. [2024-10-11 14:29:01,660 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. [2024-10-11 14:29:01,668 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 578 selfloop transitions, 87 changer transitions 5/671 dead transitions. [2024-10-11 14:29:01,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 671 transitions, 14128 flow [2024-10-11 14:29:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:29:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:29:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-10-11 14:29:01,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-11 14:29:01,669 INFO L175 Difference]: Start difference. First operand has 362 places, 647 transitions, 12635 flow. Second operand 8 states and 78 transitions. [2024-10-11 14:29:01,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 671 transitions, 14128 flow [2024-10-11 14:29:02,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 671 transitions, 13842 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:02,069 INFO L231 Difference]: Finished difference. Result has 363 places, 649 transitions, 12625 flow [2024-10-11 14:29:02,069 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} [2024-10-11 14:29:02,069 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 343 predicate places. [2024-10-11 14:29:02,070 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 649 transitions, 12625 flow [2024-10-11 14:29:02,070 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) [2024-10-11 14:29:02,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:02,070 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:02,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:02,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:02,271 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:02,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -980023607, now seen corresponding path program 39 times [2024-10-11 14:29:02,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:02,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848428907] [2024-10-11 14:29:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:02,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:02,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848428907] [2024-10-11 14:29:02,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848428907] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15249917] [2024-10-11 14:29:02,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:29:02,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:02,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:02,451 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:02,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-11 14:29:02,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-11 14:29:02,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:02,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:02,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:02,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:02,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15249917] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:02,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:02,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 14:29:02,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304593727] [2024-10-11 14:29:02,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:02,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:29:02,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:02,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:29:02,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:29:02,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:02,798 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) [2024-10-11 14:29:02,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:02,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:02,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:03,684 INFO L124 PetriNetUnfolderBase]: 1370/2327 cut-off events. [2024-10-11 14:29:03,685 INFO L125 PetriNetUnfolderBase]: For 63702/63702 co-relation queries the response was YES. [2024-10-11 14:29:03,704 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. [2024-10-11 14:29:03,713 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 645 selfloop transitions, 116 changer transitions 17/779 dead transitions. [2024-10-11 14:29:03,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 779 transitions, 16429 flow [2024-10-11 14:29:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:29:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:29:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-10-11 14:29:03,714 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-11 14:29:03,714 INFO L175 Difference]: Start difference. First operand has 363 places, 649 transitions, 12625 flow. Second operand 12 states and 112 transitions. [2024-10-11 14:29:03,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 779 transitions, 16429 flow [2024-10-11 14:29:04,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 779 transitions, 16241 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:04,091 INFO L231 Difference]: Finished difference. Result has 378 places, 717 transitions, 14393 flow [2024-10-11 14:29:04,091 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} [2024-10-11 14:29:04,091 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 358 predicate places. [2024-10-11 14:29:04,091 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 717 transitions, 14393 flow [2024-10-11 14:29:04,092 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) [2024-10-11 14:29:04,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:04,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:04,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:04,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-10-11 14:29:04,292 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:04,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:04,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1597194629, now seen corresponding path program 40 times [2024-10-11 14:29:04,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:04,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227692341] [2024-10-11 14:29:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:04,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227692341] [2024-10-11 14:29:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227692341] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499220151] [2024-10-11 14:29:04,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:29:04,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:04,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:04,492 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:04,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-11 14:29:04,546 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:29:04,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:04,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:04,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:04,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:04,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499220151] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:04,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:04,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-11 14:29:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793565766] [2024-10-11 14:29:04,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:04,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 14:29:04,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:04,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 14:29:04,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-10-11 14:29:04,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:04,814 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) [2024-10-11 14:29:04,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:04,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:04,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:05,657 INFO L124 PetriNetUnfolderBase]: 1383/2353 cut-off events. [2024-10-11 14:29:05,657 INFO L125 PetriNetUnfolderBase]: For 70494/70494 co-relation queries the response was YES. [2024-10-11 14:29:05,681 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. [2024-10-11 14:29:05,691 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 664 selfloop transitions, 113 changer transitions 4/782 dead transitions. [2024-10-11 14:29:05,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 782 transitions, 17078 flow [2024-10-11 14:29:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:29:05,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:29:05,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-10-11 14:29:05,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-10-11 14:29:05,692 INFO L175 Difference]: Start difference. First operand has 378 places, 717 transitions, 14393 flow. Second operand 10 states and 101 transitions. [2024-10-11 14:29:05,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 782 transitions, 17078 flow [2024-10-11 14:29:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 782 transitions, 16576 flow, removed 251 selfloop flow, removed 2 redundant places. [2024-10-11 14:29:06,153 INFO L231 Difference]: Finished difference. Result has 386 places, 730 transitions, 14628 flow [2024-10-11 14:29:06,154 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} [2024-10-11 14:29:06,154 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 366 predicate places. [2024-10-11 14:29:06,155 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 730 transitions, 14628 flow [2024-10-11 14:29:06,155 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) [2024-10-11 14:29:06,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:06,155 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:06,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-10-11 14:29:06,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,44 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:06,355 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:06,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash 730589701, now seen corresponding path program 41 times [2024-10-11 14:29:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:06,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015121777] [2024-10-11 14:29:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:06,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015121777] [2024-10-11 14:29:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015121777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830146546] [2024-10-11 14:29:06,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:06,551 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:06,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-11 14:29:06,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:06,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:06,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:06,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:06,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830146546] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:06,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:06,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 14:29:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699374979] [2024-10-11 14:29:06,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:06,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:06,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:06,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:06,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:06,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:06,808 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) [2024-10-11 14:29:06,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:06,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:06,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:07,710 INFO L124 PetriNetUnfolderBase]: 1382/2346 cut-off events. [2024-10-11 14:29:07,710 INFO L125 PetriNetUnfolderBase]: For 66356/66356 co-relation queries the response was YES. [2024-10-11 14:29:07,729 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. [2024-10-11 14:29:07,737 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 672 selfloop transitions, 97 changer transitions 4/774 dead transitions. [2024-10-11 14:29:07,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 774 transitions, 16693 flow [2024-10-11 14:29:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:07,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:07,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 100 transitions. [2024-10-11 14:29:07,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5050505050505051 [2024-10-11 14:29:07,738 INFO L175 Difference]: Start difference. First operand has 386 places, 730 transitions, 14628 flow. Second operand 11 states and 100 transitions. [2024-10-11 14:29:07,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 774 transitions, 16693 flow [2024-10-11 14:29:08,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 774 transitions, 16344 flow, removed 116 selfloop flow, removed 4 redundant places. [2024-10-11 14:29:08,148 INFO L231 Difference]: Finished difference. Result has 394 places, 739 transitions, 14771 flow [2024-10-11 14:29:08,149 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} [2024-10-11 14:29:08,149 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 374 predicate places. [2024-10-11 14:29:08,149 INFO L471 AbstractCegarLoop]: Abstraction has has 394 places, 739 transitions, 14771 flow [2024-10-11 14:29:08,150 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) [2024-10-11 14:29:08,150 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:08,150 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:08,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:08,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:08,350 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:08,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:08,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1519440119, now seen corresponding path program 42 times [2024-10-11 14:29:08,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:08,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739204389] [2024-10-11 14:29:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:08,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:08,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739204389] [2024-10-11 14:29:08,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739204389] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:08,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231727770] [2024-10-11 14:29:08,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:29:08,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:08,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:08,524 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:08,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-11 14:29:08,579 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:29:08,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:08,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:08,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:08,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:08,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231727770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:08,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:08,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-11 14:29:08,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363393758] [2024-10-11 14:29:08,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:08,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 14:29:08,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 14:29:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-10-11 14:29:08,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:08,805 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) [2024-10-11 14:29:08,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:08,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:08,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:09,800 INFO L124 PetriNetUnfolderBase]: 1381/2337 cut-off events. [2024-10-11 14:29:09,800 INFO L125 PetriNetUnfolderBase]: For 63082/63082 co-relation queries the response was YES. [2024-10-11 14:29:09,825 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. [2024-10-11 14:29:09,839 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 653 selfloop transitions, 111 changer transitions 11/776 dead transitions. [2024-10-11 14:29:09,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 776 transitions, 16716 flow [2024-10-11 14:29:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:29:09,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:29:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 101 transitions. [2024-10-11 14:29:09,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-10-11 14:29:09,840 INFO L175 Difference]: Start difference. First operand has 394 places, 739 transitions, 14771 flow. Second operand 11 states and 101 transitions. [2024-10-11 14:29:09,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 776 transitions, 16716 flow [2024-10-11 14:29:10,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 776 transitions, 16425 flow, removed 71 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:10,325 INFO L231 Difference]: Finished difference. Result has 400 places, 738 transitions, 14768 flow [2024-10-11 14:29:10,326 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} [2024-10-11 14:29:10,326 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 380 predicate places. [2024-10-11 14:29:10,327 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 738 transitions, 14768 flow [2024-10-11 14:29:10,327 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) [2024-10-11 14:29:10,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:10,327 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:10,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:10,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-10-11 14:29:10,527 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:10,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2012377285, now seen corresponding path program 43 times [2024-10-11 14:29:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:10,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054152933] [2024-10-11 14:29:10,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:10,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:10,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054152933] [2024-10-11 14:29:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054152933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135354312] [2024-10-11 14:29:10,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:29:10,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:10,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:10,710 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:10,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-11 14:29:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:10,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:10,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:10,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:10,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:10,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135354312] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:10,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 16 [2024-10-11 14:29:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903491441] [2024-10-11 14:29:10,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:10,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-11 14:29:10,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:10,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-11 14:29:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-10-11 14:29:10,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:10,998 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) [2024-10-11 14:29:10,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:10,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:10,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:11,867 INFO L124 PetriNetUnfolderBase]: 1409/2395 cut-off events. [2024-10-11 14:29:11,867 INFO L125 PetriNetUnfolderBase]: For 68188/68188 co-relation queries the response was YES. [2024-10-11 14:29:11,892 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. [2024-10-11 14:29:11,901 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 700 selfloop transitions, 77 changer transitions 4/782 dead transitions. [2024-10-11 14:29:11,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 782 transitions, 16949 flow [2024-10-11 14:29:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:29:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:29:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-11 14:29:11,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:29:11,902 INFO L175 Difference]: Start difference. First operand has 400 places, 738 transitions, 14768 flow. Second operand 9 states and 81 transitions. [2024-10-11 14:29:11,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 782 transitions, 16949 flow [2024-10-11 14:29:12,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 782 transitions, 16612 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:12,356 INFO L231 Difference]: Finished difference. Result has 402 places, 758 transitions, 15154 flow [2024-10-11 14:29:12,357 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} [2024-10-11 14:29:12,357 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 382 predicate places. [2024-10-11 14:29:12,357 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 758 transitions, 15154 flow [2024-10-11 14:29:12,357 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) [2024-10-11 14:29:12,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:12,357 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:12,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:12,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:12,558 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:12,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:12,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1092134469, now seen corresponding path program 44 times [2024-10-11 14:29:12,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025161450] [2024-10-11 14:29:12,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025161450] [2024-10-11 14:29:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025161450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565945405] [2024-10-11 14:29:12,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:12,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:12,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:12,705 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:12,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-11 14:29:12,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:12,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:12,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:12,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:12,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:13,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:13,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565945405] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:13,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-11 14:29:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825522839] [2024-10-11 14:29:13,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:13,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:29:13,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:13,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:29:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:13,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:13,021 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) [2024-10-11 14:29:13,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:13,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:13,874 INFO L124 PetriNetUnfolderBase]: 1453/2465 cut-off events. [2024-10-11 14:29:13,874 INFO L125 PetriNetUnfolderBase]: For 71496/71496 co-relation queries the response was YES. [2024-10-11 14:29:13,900 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. [2024-10-11 14:29:13,909 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 709 selfloop transitions, 95 changer transitions 5/810 dead transitions. [2024-10-11 14:29:13,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 810 transitions, 17573 flow [2024-10-11 14:29:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:29:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:29:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-10-11 14:29:13,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-11 14:29:13,911 INFO L175 Difference]: Start difference. First operand has 402 places, 758 transitions, 15154 flow. Second operand 8 states and 82 transitions. [2024-10-11 14:29:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 810 transitions, 17573 flow [2024-10-11 14:29:14,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 810 transitions, 17253 flow, removed 110 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:14,415 INFO L231 Difference]: Finished difference. Result has 406 places, 778 transitions, 15611 flow [2024-10-11 14:29:14,415 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} [2024-10-11 14:29:14,416 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 386 predicate places. [2024-10-11 14:29:14,416 INFO L471 AbstractCegarLoop]: Abstraction has has 406 places, 778 transitions, 15611 flow [2024-10-11 14:29:14,416 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) [2024-10-11 14:29:14,416 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:14,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:14,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-10-11 14:29:14,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:14,617 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:14,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:14,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1014379959, now seen corresponding path program 45 times [2024-10-11 14:29:14,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:14,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448298135] [2024-10-11 14:29:14,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:14,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448298135] [2024-10-11 14:29:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448298135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:14,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577995494] [2024-10-11 14:29:14,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:29:14,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:14,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:14,803 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:14,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-11 14:29:14,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:29:14,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:14,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-11 14:29:14,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:14,986 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577995494] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:15,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2024-10-11 14:29:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647305081] [2024-10-11 14:29:15,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-11 14:29:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-11 14:29:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-10-11 14:29:15,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:15,149 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) [2024-10-11 14:29:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:16,004 INFO L124 PetriNetUnfolderBase]: 1450/2456 cut-off events. [2024-10-11 14:29:16,004 INFO L125 PetriNetUnfolderBase]: For 69450/69450 co-relation queries the response was YES. [2024-10-11 14:29:16,031 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. [2024-10-11 14:29:16,042 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 707 selfloop transitions, 93 changer transitions 6/807 dead transitions. [2024-10-11 14:29:16,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 807 transitions, 17458 flow [2024-10-11 14:29:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:29:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:29:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-10-11 14:29:16,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-10-11 14:29:16,043 INFO L175 Difference]: Start difference. First operand has 406 places, 778 transitions, 15611 flow. Second operand 9 states and 85 transitions. [2024-10-11 14:29:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 807 transitions, 17458 flow [2024-10-11 14:29:16,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 807 transitions, 17167 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:16,539 INFO L231 Difference]: Finished difference. Result has 410 places, 780 transitions, 15628 flow [2024-10-11 14:29:16,540 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} [2024-10-11 14:29:16,540 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2024-10-11 14:29:16,540 INFO L471 AbstractCegarLoop]: Abstraction has has 410 places, 780 transitions, 15628 flow [2024-10-11 14:29:16,540 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) [2024-10-11 14:29:16,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:16,540 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:16,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-10-11 14:29:16,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-11 14:29:16,741 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:16,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash -26371860, now seen corresponding path program 46 times [2024-10-11 14:29:16,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:16,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076777500] [2024-10-11 14:29:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076777500] [2024-10-11 14:29:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076777500] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834783106] [2024-10-11 14:29:16,842 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:29:16,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:16,843 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:16,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-11 14:29:16,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:29:16,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:16,899 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:16,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:16,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:16,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834783106] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:16,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:16,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-11 14:29:16,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538663916] [2024-10-11 14:29:16,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:16,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:29:16,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:29:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:29:16,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:16,974 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) [2024-10-11 14:29:16,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:16,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:16,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:18,055 INFO L124 PetriNetUnfolderBase]: 1765/3012 cut-off events. [2024-10-11 14:29:18,055 INFO L125 PetriNetUnfolderBase]: For 85581/85581 co-relation queries the response was YES. [2024-10-11 14:29:18,087 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. [2024-10-11 14:29:18,100 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 730 selfloop transitions, 247 changer transitions 12/990 dead transitions. [2024-10-11 14:29:18,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 990 transitions, 21490 flow [2024-10-11 14:29:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:29:18,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:29:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-10-11 14:29:18,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:29:18,100 INFO L175 Difference]: Start difference. First operand has 410 places, 780 transitions, 15628 flow. Second operand 9 states and 81 transitions. [2024-10-11 14:29:18,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 990 transitions, 21490 flow [2024-10-11 14:29:18,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 990 transitions, 21260 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-10-11 14:29:18,701 INFO L231 Difference]: Finished difference. Result has 416 places, 869 transitions, 18034 flow [2024-10-11 14:29:18,702 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} [2024-10-11 14:29:18,702 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 396 predicate places. [2024-10-11 14:29:18,702 INFO L471 AbstractCegarLoop]: Abstraction has has 416 places, 869 transitions, 18034 flow [2024-10-11 14:29:18,702 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) [2024-10-11 14:29:18,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:18,703 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:18,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:18,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-11 14:29:18,903 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:18,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:18,904 INFO L85 PathProgramCache]: Analyzing trace with hash 604922573, now seen corresponding path program 47 times [2024-10-11 14:29:18,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:18,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972541711] [2024-10-11 14:29:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:18,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972541711] [2024-10-11 14:29:18,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972541711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247994369] [2024-10-11 14:29:18,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:18,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:18,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:18,990 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:18,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-11 14:29:19,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:29:19,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:19,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:19,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:19,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:19,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247994369] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:19,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:19,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-10-11 14:29:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196281738] [2024-10-11 14:29:19,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:19,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 14:29:19,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 14:29:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-10-11 14:29:19,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:19,166 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) [2024-10-11 14:29:19,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:19,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:19,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:20,329 INFO L124 PetriNetUnfolderBase]: 1911/3250 cut-off events. [2024-10-11 14:29:20,329 INFO L125 PetriNetUnfolderBase]: For 98754/98754 co-relation queries the response was YES. [2024-10-11 14:29:20,364 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. [2024-10-11 14:29:20,378 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 646 selfloop transitions, 426 changer transitions 0/1073 dead transitions. [2024-10-11 14:29:20,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1073 transitions, 23903 flow [2024-10-11 14:29:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:29:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:29:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 113 transitions. [2024-10-11 14:29:20,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4829059829059829 [2024-10-11 14:29:20,379 INFO L175 Difference]: Start difference. First operand has 416 places, 869 transitions, 18034 flow. Second operand 13 states and 113 transitions. [2024-10-11 14:29:20,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1073 transitions, 23903 flow [2024-10-11 14:29:21,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1073 transitions, 23513 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-10-11 14:29:21,047 INFO L231 Difference]: Finished difference. Result has 425 places, 936 transitions, 20325 flow [2024-10-11 14:29:21,048 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} [2024-10-11 14:29:21,048 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 405 predicate places. [2024-10-11 14:29:21,048 INFO L471 AbstractCegarLoop]: Abstraction has has 425 places, 936 transitions, 20325 flow [2024-10-11 14:29:21,049 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) [2024-10-11 14:29:21,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:21,049 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:21,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:21,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2024-10-11 14:29:21,249 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:21,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash 558158597, now seen corresponding path program 48 times [2024-10-11 14:29:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:21,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168684489] [2024-10-11 14:29:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:21,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:21,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:21,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168684489] [2024-10-11 14:29:21,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168684489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:21,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639431744] [2024-10-11 14:29:21,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:29:21,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:21,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:21,316 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:21,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-11 14:29:21,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-11 14:29:21,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:21,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:21,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:21,420 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:21,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639431744] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:21,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:21,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:21,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357411474] [2024-10-11 14:29:21,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:21,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:21,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:21,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:21,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:21,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:21,455 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) [2024-10-11 14:29:21,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:21,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:21,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:22,775 INFO L124 PetriNetUnfolderBase]: 2081/3517 cut-off events. [2024-10-11 14:29:22,775 INFO L125 PetriNetUnfolderBase]: For 124819/124819 co-relation queries the response was YES. [2024-10-11 14:29:22,813 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. [2024-10-11 14:29:22,829 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 539 selfloop transitions, 530 changer transitions 0/1070 dead transitions. [2024-10-11 14:29:22,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1070 transitions, 25482 flow [2024-10-11 14:29:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:29:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:29:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 186 transitions. [2024-10-11 14:29:22,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-10-11 14:29:22,830 INFO L175 Difference]: Start difference. First operand has 425 places, 936 transitions, 20325 flow. Second operand 24 states and 186 transitions. [2024-10-11 14:29:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1070 transitions, 25482 flow [2024-10-11 14:29:23,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 1070 transitions, 24981 flow, removed 160 selfloop flow, removed 3 redundant places. [2024-10-11 14:29:23,621 INFO L231 Difference]: Finished difference. Result has 451 places, 1029 transitions, 24098 flow [2024-10-11 14:29:23,622 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} [2024-10-11 14:29:23,622 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 431 predicate places. [2024-10-11 14:29:23,622 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 1029 transitions, 24098 flow [2024-10-11 14:29:23,622 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) [2024-10-11 14:29:23,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:23,622 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:23,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-10-11 14:29:23,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:23,823 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:23,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -16651817, now seen corresponding path program 49 times [2024-10-11 14:29:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700974735] [2024-10-11 14:29:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:23,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:23,895 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:23,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700974735] [2024-10-11 14:29:23,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700974735] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:23,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656289238] [2024-10-11 14:29:23,895 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:29:23,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:23,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:23,896 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:23,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-11 14:29:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:23,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:23,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:24,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:24,038 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656289238] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:24,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:24,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:24,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822342663] [2024-10-11 14:29:24,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:24,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:24,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:24,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:24,040 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) [2024-10-11 14:29:24,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:24,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:24,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:25,388 INFO L124 PetriNetUnfolderBase]: 2079/3523 cut-off events. [2024-10-11 14:29:25,388 INFO L125 PetriNetUnfolderBase]: For 127792/127792 co-relation queries the response was YES. [2024-10-11 14:29:25,429 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. [2024-10-11 14:29:25,445 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 597 selfloop transitions, 462 changer transitions 4/1064 dead transitions. [2024-10-11 14:29:25,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1064 transitions, 26477 flow [2024-10-11 14:29:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:29:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:29:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2024-10-11 14:29:25,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-10-11 14:29:25,446 INFO L175 Difference]: Start difference. First operand has 451 places, 1029 transitions, 24098 flow. Second operand 19 states and 144 transitions. [2024-10-11 14:29:25,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1064 transitions, 26477 flow [2024-10-11 14:29:26,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1064 transitions, 24540 flow, removed 737 selfloop flow, removed 11 redundant places. [2024-10-11 14:29:26,452 INFO L231 Difference]: Finished difference. Result has 460 places, 1027 transitions, 23091 flow [2024-10-11 14:29:26,453 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} [2024-10-11 14:29:26,453 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 440 predicate places. [2024-10-11 14:29:26,453 INFO L471 AbstractCegarLoop]: Abstraction has has 460 places, 1027 transitions, 23091 flow [2024-10-11 14:29:26,453 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) [2024-10-11 14:29:26,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:26,453 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:26,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-10-11 14:29:26,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,53 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:26,654 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:26,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1262768003, now seen corresponding path program 50 times [2024-10-11 14:29:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:26,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481843452] [2024-10-11 14:29:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:26,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:26,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481843452] [2024-10-11 14:29:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481843452] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813047144] [2024-10-11 14:29:26,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:26,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:26,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:26,749 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:26,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-11 14:29:26,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:26,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:26,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:26,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:26,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:26,856 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:26,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813047144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:26,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-11 14:29:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036508683] [2024-10-11 14:29:26,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:26,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:29:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:29:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:29:26,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:26,900 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) [2024-10-11 14:29:26,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:26,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:28,366 INFO L124 PetriNetUnfolderBase]: 2131/3613 cut-off events. [2024-10-11 14:29:28,366 INFO L125 PetriNetUnfolderBase]: For 100990/100990 co-relation queries the response was YES. [2024-10-11 14:29:28,410 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. [2024-10-11 14:29:28,428 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 689 selfloop transitions, 406 changer transitions 0/1096 dead transitions. [2024-10-11 14:29:28,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1096 transitions, 26133 flow [2024-10-11 14:29:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:29:28,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:29:28,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 144 transitions. [2024-10-11 14:29:28,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-10-11 14:29:28,429 INFO L175 Difference]: Start difference. First operand has 460 places, 1027 transitions, 23091 flow. Second operand 19 states and 144 transitions. [2024-10-11 14:29:28,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1096 transitions, 26133 flow [2024-10-11 14:29:29,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1096 transitions, 25345 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-10-11 14:29:29,290 INFO L231 Difference]: Finished difference. Result has 467 places, 1053 transitions, 23860 flow [2024-10-11 14:29:29,291 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} [2024-10-11 14:29:29,292 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 447 predicate places. [2024-10-11 14:29:29,292 INFO L471 AbstractCegarLoop]: Abstraction has has 467 places, 1053 transitions, 23860 flow [2024-10-11 14:29:29,292 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) [2024-10-11 14:29:29,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:29,292 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:29,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:29,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2024-10-11 14:29:29,496 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:29,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:29,497 INFO L85 PathProgramCache]: Analyzing trace with hash 684133252, now seen corresponding path program 51 times [2024-10-11 14:29:29,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:29,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221150671] [2024-10-11 14:29:29,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:29,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221150671] [2024-10-11 14:29:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221150671] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835854674] [2024-10-11 14:29:29,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:29:29,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:29,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:29,563 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:29,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-11 14:29:29,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-11 14:29:29,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:29,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:29,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:29,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:29,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835854674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:29,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:29,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-11 14:29:29,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487870061] [2024-10-11 14:29:29,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:29,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:29:29,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:29,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:29:29,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:29:29,702 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:29,702 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) [2024-10-11 14:29:29,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:29,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:29,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:31,020 INFO L124 PetriNetUnfolderBase]: 2151/3659 cut-off events. [2024-10-11 14:29:31,020 INFO L125 PetriNetUnfolderBase]: For 114850/114850 co-relation queries the response was YES. [2024-10-11 14:29:31,069 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. [2024-10-11 14:29:31,086 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 859 selfloop transitions, 301 changer transitions 11/1172 dead transitions. [2024-10-11 14:29:31,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1172 transitions, 28606 flow [2024-10-11 14:29:31,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:29:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:29:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 119 transitions. [2024-10-11 14:29:31,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-10-11 14:29:31,088 INFO L175 Difference]: Start difference. First operand has 467 places, 1053 transitions, 23860 flow. Second operand 15 states and 119 transitions. [2024-10-11 14:29:31,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1172 transitions, 28606 flow [2024-10-11 14:29:32,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1172 transitions, 28240 flow, removed 98 selfloop flow, removed 5 redundant places. [2024-10-11 14:29:32,087 INFO L231 Difference]: Finished difference. Result has 480 places, 1077 transitions, 25010 flow [2024-10-11 14:29:32,087 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} [2024-10-11 14:29:32,088 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 460 predicate places. [2024-10-11 14:29:32,088 INFO L471 AbstractCegarLoop]: Abstraction has has 480 places, 1077 transitions, 25010 flow [2024-10-11 14:29:32,088 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) [2024-10-11 14:29:32,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:32,088 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:32,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:32,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:32,289 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:32,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -688044373, now seen corresponding path program 52 times [2024-10-11 14:29:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508576260] [2024-10-11 14:29:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508576260] [2024-10-11 14:29:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508576260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820694971] [2024-10-11 14:29:32,361 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:29:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:32,363 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:32,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-11 14:29:32,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:29:32,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:32,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:32,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:32,468 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:32,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820694971] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:32,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:32,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277997325] [2024-10-11 14:29:32,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:32,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:32,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:32,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:32,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:32,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:32,505 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) [2024-10-11 14:29:32,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:32,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:32,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:33,975 INFO L124 PetriNetUnfolderBase]: 2214/3766 cut-off events. [2024-10-11 14:29:33,975 INFO L125 PetriNetUnfolderBase]: For 120983/120983 co-relation queries the response was YES. [2024-10-11 14:29:34,022 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. [2024-10-11 14:29:34,040 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 668 selfloop transitions, 487 changer transitions 0/1156 dead transitions. [2024-10-11 14:29:34,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 1156 transitions, 28353 flow [2024-10-11 14:29:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:29:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:29:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 158 transitions. [2024-10-11 14:29:34,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-10-11 14:29:34,041 INFO L175 Difference]: Start difference. First operand has 480 places, 1077 transitions, 25010 flow. Second operand 21 states and 158 transitions. [2024-10-11 14:29:34,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 1156 transitions, 28353 flow [2024-10-11 14:29:35,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 1156 transitions, 27092 flow, removed 192 selfloop flow, removed 11 redundant places. [2024-10-11 14:29:35,055 INFO L231 Difference]: Finished difference. Result has 493 places, 1116 transitions, 25831 flow [2024-10-11 14:29:35,055 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} [2024-10-11 14:29:35,056 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 473 predicate places. [2024-10-11 14:29:35,056 INFO L471 AbstractCegarLoop]: Abstraction has has 493 places, 1116 transitions, 25831 flow [2024-10-11 14:29:35,056 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) [2024-10-11 14:29:35,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:35,056 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:35,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-10-11 14:29:35,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2024-10-11 14:29:35,257 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:35,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash 569731480, now seen corresponding path program 53 times [2024-10-11 14:29:35,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351127342] [2024-10-11 14:29:35,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:35,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351127342] [2024-10-11 14:29:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351127342] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:35,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659819633] [2024-10-11 14:29:35,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:29:35,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:35,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:35,323 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:35,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-11 14:29:35,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-11 14:29:35,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:35,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:35,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:35,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:35,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659819633] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:35,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:35,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:35,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168221044] [2024-10-11 14:29:35,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:35,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:35,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:35,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:35,474 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) [2024-10-11 14:29:35,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:35,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:35,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:37,064 INFO L124 PetriNetUnfolderBase]: 2435/4065 cut-off events. [2024-10-11 14:29:37,065 INFO L125 PetriNetUnfolderBase]: For 133147/133147 co-relation queries the response was YES. [2024-10-11 14:29:37,118 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. [2024-10-11 14:29:37,139 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 823 selfloop transitions, 515 changer transitions 1/1340 dead transitions. [2024-10-11 14:29:37,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 1340 transitions, 33196 flow [2024-10-11 14:29:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:29:37,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:29:37,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 203 transitions. [2024-10-11 14:29:37,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-10-11 14:29:37,140 INFO L175 Difference]: Start difference. First operand has 493 places, 1116 transitions, 25831 flow. Second operand 28 states and 203 transitions. [2024-10-11 14:29:37,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 1340 transitions, 33196 flow [2024-10-11 14:29:38,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1340 transitions, 32779 flow, removed 95 selfloop flow, removed 9 redundant places. [2024-10-11 14:29:38,364 INFO L231 Difference]: Finished difference. Result has 517 places, 1253 transitions, 30357 flow [2024-10-11 14:29:38,364 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} [2024-10-11 14:29:38,365 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 497 predicate places. [2024-10-11 14:29:38,365 INFO L471 AbstractCegarLoop]: Abstraction has has 517 places, 1253 transitions, 30357 flow [2024-10-11 14:29:38,365 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) [2024-10-11 14:29:38,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:38,365 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:38,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-10-11 14:29:38,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2024-10-11 14:29:38,566 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:38,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:38,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1852308518, now seen corresponding path program 54 times [2024-10-11 14:29:38,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:38,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122402806] [2024-10-11 14:29:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122402806] [2024-10-11 14:29:38,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122402806] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:38,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125956592] [2024-10-11 14:29:38,631 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:29:38,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:38,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:38,632 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:38,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-11 14:29:38,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-11 14:29:38,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:38,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:38,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:38,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:38,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125956592] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:38,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:38,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:38,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526747617] [2024-10-11 14:29:38,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:38,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:38,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:38,769 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:38,769 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) [2024-10-11 14:29:38,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:38,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:38,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:40,608 INFO L124 PetriNetUnfolderBase]: 2412/4028 cut-off events. [2024-10-11 14:29:40,608 INFO L125 PetriNetUnfolderBase]: For 133352/133352 co-relation queries the response was YES. [2024-10-11 14:29:40,652 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. [2024-10-11 14:29:40,670 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 834 selfloop transitions, 479 changer transitions 10/1324 dead transitions. [2024-10-11 14:29:40,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 1324 transitions, 34287 flow [2024-10-11 14:29:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:29:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:29:40,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 147 transitions. [2024-10-11 14:29:40,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-10-11 14:29:40,671 INFO L175 Difference]: Start difference. First operand has 517 places, 1253 transitions, 30357 flow. Second operand 19 states and 147 transitions. [2024-10-11 14:29:40,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 1324 transitions, 34287 flow [2024-10-11 14:29:41,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1324 transitions, 32829 flow, removed 548 selfloop flow, removed 10 redundant places. [2024-10-11 14:29:41,840 INFO L231 Difference]: Finished difference. Result has 526 places, 1237 transitions, 29571 flow [2024-10-11 14:29:41,841 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} [2024-10-11 14:29:41,841 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 506 predicate places. [2024-10-11 14:29:41,841 INFO L471 AbstractCegarLoop]: Abstraction has has 526 places, 1237 transitions, 29571 flow [2024-10-11 14:29:41,841 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) [2024-10-11 14:29:41,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:41,841 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:41,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-10-11 14:29:42,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,58 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:42,042 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:42,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash 373862872, now seen corresponding path program 55 times [2024-10-11 14:29:42,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:42,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108031787] [2024-10-11 14:29:42,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:42,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108031787] [2024-10-11 14:29:42,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108031787] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:42,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139067154] [2024-10-11 14:29:42,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:29:42,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:42,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:42,119 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:42,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-11 14:29:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:42,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:42,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:42,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139067154] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:42,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:42,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 14:29:42,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271234991] [2024-10-11 14:29:42,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:42,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:29:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:29:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:29:42,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:42,262 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) [2024-10-11 14:29:42,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:42,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:42,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:29:44,028 INFO L124 PetriNetUnfolderBase]: 2493/4131 cut-off events. [2024-10-11 14:29:44,028 INFO L125 PetriNetUnfolderBase]: For 138087/138087 co-relation queries the response was YES. [2024-10-11 14:29:44,080 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. [2024-10-11 14:29:44,099 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 935 selfloop transitions, 412 changer transitions 19/1367 dead transitions. [2024-10-11 14:29:44,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 1367 transitions, 35169 flow [2024-10-11 14:29:44,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 14:29:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-11 14:29:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 133 transitions. [2024-10-11 14:29:44,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.434640522875817 [2024-10-11 14:29:44,100 INFO L175 Difference]: Start difference. First operand has 526 places, 1237 transitions, 29571 flow. Second operand 17 states and 133 transitions. [2024-10-11 14:29:44,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 1367 transitions, 35169 flow [2024-10-11 14:29:45,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 1367 transitions, 33985 flow, removed 80 selfloop flow, removed 17 redundant places. [2024-10-11 14:29:45,232 INFO L231 Difference]: Finished difference. Result has 527 places, 1265 transitions, 30520 flow [2024-10-11 14:29:45,233 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} [2024-10-11 14:29:45,233 INFO L277 CegarLoopForPetriNet]: 20 programPoint places, 507 predicate places. [2024-10-11 14:29:45,233 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 1265 transitions, 30520 flow [2024-10-11 14:29:45,234 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) [2024-10-11 14:29:45,234 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:29:45,234 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:29:45,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-10-11 14:29:45,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-11 14:29:45,434 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:29:45,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:29:45,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1141727027, now seen corresponding path program 56 times [2024-10-11 14:29:45,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:29:45,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806923748] [2024-10-11 14:29:45,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:29:45,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:29:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:29:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:29:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806923748] [2024-10-11 14:29:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806923748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:29:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485261948] [2024-10-11 14:29:45,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:29:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:29:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:29:45,521 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:29:45,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-11 14:29:45,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:29:45,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:29:45,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 14:29:45,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:29:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:45,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:29:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:29:45,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485261948] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:29:45,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:29:45,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-10-11 14:29:45,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483702606] [2024-10-11 14:29:45,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:29:45,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:29:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:29:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:29:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:29:45,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18 [2024-10-11 14:29:45,703 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) [2024-10-11 14:29:45,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:29:45,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18 [2024-10-11 14:29:45,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand