./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:46:56,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:46:56,658 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:46:56,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:46:56,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:46:56,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:46:56,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:46:56,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:46:56,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:46:56,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:46:56,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:46:56,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:46:56,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:46:56,703 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:46:56,703 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:46:56,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:46:56,704 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:46:56,704 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:46:56,704 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:46:56,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:46:56,705 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:46:56,708 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:46:56,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:46:56,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:46:56,709 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:46:56,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:46:56,709 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:46:56,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:46:56,710 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:46:56,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:46:56,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:46:56,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:46:56,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:46:56,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:46:56,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:46:56,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:46:56,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:46:56,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:46:56,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:46:56,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:46:56,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:46:56,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:46:56,715 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-11-19 01:46:56,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:46:57,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:46:57,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:46:57,018 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:46:57,019 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:46:57,020 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-19 01:46:58,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:46:58,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:46:58,691 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-11-19 01:46:58,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59ea76bb/05cc8b380d6841c69bad16966f546c37/FLAG798a3e969 [2024-11-19 01:46:58,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a59ea76bb/05cc8b380d6841c69bad16966f546c37 [2024-11-19 01:46:58,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:46:58,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:46:58,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:46:58,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:46:58,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:46:58,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:46:58" (1/1) ... [2024-11-19 01:46:58,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44771f93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:58, skipping insertion in model container [2024-11-19 01:46:58,738 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:46:58" (1/1) ... [2024-11-19 01:46:58,764 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:46:58,985 WARN L250 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/mult-flipped-dist.wvr.c[2174,2187] [2024-11-19 01:46:58,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:46:58,999 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:46:59,022 WARN L250 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/mult-flipped-dist.wvr.c[2174,2187] [2024-11-19 01:46:59,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:46:59,040 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:46:59,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59 WrapperNode [2024-11-19 01:46:59,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:46:59,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:46:59,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:46:59,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:46:59,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,078 INFO L138 Inliner]: procedures = 21, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-19 01:46:59,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:46:59,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:46:59,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:46:59,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:46:59,089 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,092 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,109 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]. [2024-11-19 01:46:59,110 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:46:59,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:46:59,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:46:59,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:46:59,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (1/1) ... [2024-11-19 01:46:59,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:46:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:46:59,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:46:59,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:46:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:46:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:46:59,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:46:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:46:59,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:46:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:46:59,229 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:46:59,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:46:59,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:46:59,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:46:59,233 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:46:59,343 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:46:59,345 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:46:59,520 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:46:59,520 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:46:59,668 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:46:59,669 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:46:59,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:46:59 BoogieIcfgContainer [2024-11-19 01:46:59,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:46:59,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:46:59,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:46:59,677 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:46:59,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:46:58" (1/3) ... [2024-11-19 01:46:59,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:46:59, skipping insertion in model container [2024-11-19 01:46:59,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:46:59" (2/3) ... [2024-11-19 01:46:59,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cb853b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:46:59, skipping insertion in model container [2024-11-19 01:46:59,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:46:59" (3/3) ... [2024-11-19 01:46:59,680 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-11-19 01:46:59,693 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:46:59,693 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:46:59,694 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:46:59,751 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-19 01:46:59,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 25 transitions, 71 flow [2024-11-19 01:46:59,814 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-19 01:46:59,814 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:46:59,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 3/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-19 01:46:59,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 25 transitions, 71 flow [2024-11-19 01:46:59,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 60 flow [2024-11-19 01:46:59,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:46:59,841 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;@77ccb86c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:46:59,841 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-19 01:46:59,852 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:46:59,853 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-19 01:46:59,853 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:46:59,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:46:59,854 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:46:59,854 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:46:59,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:46:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1904699272, now seen corresponding path program 1 times [2024-11-19 01:46:59,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:46:59,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876681628] [2024-11-19 01:46:59,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:46:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876681628] [2024-11-19 01:47:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876681628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:00,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:47:00,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430459951] [2024-11-19 01:47:00,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:00,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:47:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:47:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:47:00,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:00,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:00,809 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-11-19 01:47:00,809 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-19 01:47:00,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1793 event pairs, 124 based on Foata normal form. 1/416 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-19 01:47:00,821 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-11-19 01:47:00,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-11-19 01:47:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:47:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:47:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-19 01:47:00,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-19 01:47:00,833 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 60 flow. Second operand 3 states and 50 transitions. [2024-11-19 01:47:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-11-19 01:47:00,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-19 01:47:00,840 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-11-19 01:47:00,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-11-19 01:47:00,848 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2024-11-19 01:47:00,849 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-11-19 01:47:00,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:00,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:00,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:00,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:47:00,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:00,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -503843282, now seen corresponding path program 1 times [2024-11-19 01:47:00,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:00,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598683125] [2024-11-19 01:47:00,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:01,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598683125] [2024-11-19 01:47:01,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598683125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:01,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962336581] [2024-11-19 01:47:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:01,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:01,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:01,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:01,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:01,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:01,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:01,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:01,224 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-11-19 01:47:01,224 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-11-19 01:47:01,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2449 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-11-19 01:47:01,241 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-11-19 01:47:01,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-11-19 01:47:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:01,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-19 01:47:01,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.568 [2024-11-19 01:47:01,248 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 71 transitions. [2024-11-19 01:47:01,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-11-19 01:47:01,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:01,250 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-11-19 01:47:01,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-11-19 01:47:01,255 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2024-11-19 01:47:01,255 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-11-19 01:47:01,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:01,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:01,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:01,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:47:01,256 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:01,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -759649045, now seen corresponding path program 1 times [2024-11-19 01:47:01,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897235717] [2024-11-19 01:47:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:01,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:01,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897235717] [2024-11-19 01:47:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897235717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:01,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:01,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595636682] [2024-11-19 01:47:01,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:01,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:01,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:01,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:01,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:01,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:01,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:01,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:01,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:01,640 INFO L124 PetriNetUnfolderBase]: 546/820 cut-off events. [2024-11-19 01:47:01,642 INFO L125 PetriNetUnfolderBase]: For 742/742 co-relation queries the response was YES. [2024-11-19 01:47:01,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 820 events. 546/820 cut-off events. For 742/742 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3117 event pairs, 144 based on Foata normal form. 65/885 useless extension candidates. Maximal degree in co-relation 2002. Up to 373 conditions per place. [2024-11-19 01:47:01,651 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 50 selfloop transitions, 10 changer transitions 5/66 dead transitions. [2024-11-19 01:47:01,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 385 flow [2024-11-19 01:47:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:47:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:47:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2024-11-19 01:47:01,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616 [2024-11-19 01:47:01,654 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 5 states and 77 transitions. [2024-11-19 01:47:01,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 385 flow [2024-11-19 01:47:01,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 66 transitions, 373 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:01,662 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 199 flow [2024-11-19 01:47:01,662 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2024-11-19 01:47:01,663 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-11-19 01:47:01,665 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 199 flow [2024-11-19 01:47:01,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:01,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:01,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:01,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:47:01,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:01,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1245302808, now seen corresponding path program 2 times [2024-11-19 01:47:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:01,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053044303] [2024-11-19 01:47:01,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:01,692 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:01,692 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:01,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053044303] [2024-11-19 01:47:01,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053044303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:01,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398484050] [2024-11-19 01:47:01,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:01,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:01,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:01,865 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:01,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:47:01,939 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:01,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:01,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:47:01,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:02,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:02,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:02,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398484050] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2024-11-19 01:47:02,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635451976] [2024-11-19 01:47:02,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:02,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:02,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:02,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:47:02,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:02,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:02,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:02,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:02,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:02,268 INFO L124 PetriNetUnfolderBase]: 608/913 cut-off events. [2024-11-19 01:47:02,269 INFO L125 PetriNetUnfolderBase]: For 2132/2132 co-relation queries the response was YES. [2024-11-19 01:47:02,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 913 events. 608/913 cut-off events. For 2132/2132 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3434 event pairs, 158 based on Foata normal form. 31/944 useless extension candidates. Maximal degree in co-relation 2590. Up to 528 conditions per place. [2024-11-19 01:47:02,276 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 50 selfloop transitions, 7 changer transitions 10/68 dead transitions. [2024-11-19 01:47:02,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 501 flow [2024-11-19 01:47:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:02,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-19 01:47:02,277 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-19 01:47:02,277 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 199 flow. Second operand 4 states and 64 transitions. [2024-11-19 01:47:02,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 501 flow [2024-11-19 01:47:02,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 68 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:02,285 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 223 flow [2024-11-19 01:47:02,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=223, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2024-11-19 01:47:02,287 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2024-11-19 01:47:02,287 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 223 flow [2024-11-19 01:47:02,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:02,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:02,288 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:02,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:02,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:02,489 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:02,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:02,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1991329388, now seen corresponding path program 3 times [2024-11-19 01:47:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55142153] [2024-11-19 01:47:02,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:02,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:02,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55142153] [2024-11-19 01:47:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55142153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:02,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:02,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001410637] [2024-11-19 01:47:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:02,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:02,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:02,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:02,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:02,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:02,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:02,724 INFO L124 PetriNetUnfolderBase]: 739/1132 cut-off events. [2024-11-19 01:47:02,724 INFO L125 PetriNetUnfolderBase]: For 3163/3163 co-relation queries the response was YES. [2024-11-19 01:47:02,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4375 conditions, 1132 events. 739/1132 cut-off events. For 3163/3163 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4721 event pairs, 225 based on Foata normal form. 42/1174 useless extension candidates. Maximal degree in co-relation 3132. Up to 610 conditions per place. [2024-11-19 01:47:02,733 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 54 selfloop transitions, 10 changer transitions 4/69 dead transitions. [2024-11-19 01:47:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 523 flow [2024-11-19 01:47:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 61 transitions. [2024-11-19 01:47:02,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61 [2024-11-19 01:47:02,735 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 223 flow. Second operand 4 states and 61 transitions. [2024-11-19 01:47:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 523 flow [2024-11-19 01:47:02,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 69 transitions, 508 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:02,743 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 279 flow [2024-11-19 01:47:02,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-19 01:47:02,744 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-11-19 01:47:02,744 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 279 flow [2024-11-19 01:47:02,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:02,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:02,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:02,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:47:02,745 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:02,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash -107681725, now seen corresponding path program 2 times [2024-11-19 01:47:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:02,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831448296] [2024-11-19 01:47:02,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:02,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:02,757 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:02,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831448296] [2024-11-19 01:47:02,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831448296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:02,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590107896] [2024-11-19 01:47:02,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:02,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:02,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:02,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:02,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:47:02,936 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:02,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:02,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:47:02,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:02,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:03,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590107896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:03,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:03,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-19 01:47:03,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306990101] [2024-11-19 01:47:03,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:03,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:47:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:47:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:47:03,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:03,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 279 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2024-11-19 01:47:03,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:03,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:03,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:03,360 INFO L124 PetriNetUnfolderBase]: 1031/1552 cut-off events. [2024-11-19 01:47:03,360 INFO L125 PetriNetUnfolderBase]: For 5742/5742 co-relation queries the response was YES. [2024-11-19 01:47:03,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7141 conditions, 1552 events. 1031/1552 cut-off events. For 5742/5742 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6530 event pairs, 365 based on Foata normal form. 69/1621 useless extension candidates. Maximal degree in co-relation 5565. Up to 1007 conditions per place. [2024-11-19 01:47:03,371 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 66 selfloop transitions, 33 changer transitions 15/115 dead transitions. [2024-11-19 01:47:03,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 115 transitions, 1102 flow [2024-11-19 01:47:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:47:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:47:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-11-19 01:47:03,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-11-19 01:47:03,373 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 279 flow. Second operand 7 states and 96 transitions. [2024-11-19 01:47:03,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 115 transitions, 1102 flow [2024-11-19 01:47:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 115 transitions, 1034 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:03,383 INFO L231 Difference]: Finished difference. Result has 52 places, 70 transitions, 687 flow [2024-11-19 01:47:03,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=687, PETRI_PLACES=52, PETRI_TRANSITIONS=70} [2024-11-19 01:47:03,384 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-11-19 01:47:03,385 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 70 transitions, 687 flow [2024-11-19 01:47:03,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 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) [2024-11-19 01:47:03,385 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:03,385 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:03,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:47:03,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 01:47:03,590 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash 847235322, now seen corresponding path program 4 times [2024-11-19 01:47:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198495494] [2024-11-19 01:47:03,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:03,601 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:03,604 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:03,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:03,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198495494] [2024-11-19 01:47:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198495494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:03,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:03,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813543103] [2024-11-19 01:47:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:03,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:03,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:03,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:03,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:03,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 70 transitions, 687 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:03,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:03,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:03,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:03,977 INFO L124 PetriNetUnfolderBase]: 1164/1732 cut-off events. [2024-11-19 01:47:03,977 INFO L125 PetriNetUnfolderBase]: For 8925/8925 co-relation queries the response was YES. [2024-11-19 01:47:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9012 conditions, 1732 events. 1164/1732 cut-off events. For 8925/8925 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7667 event pairs, 270 based on Foata normal form. 10/1742 useless extension candidates. Maximal degree in co-relation 7398. Up to 937 conditions per place. [2024-11-19 01:47:03,990 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 104 selfloop transitions, 30 changer transitions 24/159 dead transitions. [2024-11-19 01:47:03,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 159 transitions, 1845 flow [2024-11-19 01:47:03,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:47:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:47:03,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-11-19 01:47:03,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-19 01:47:03,992 INFO L175 Difference]: Start difference. First operand has 52 places, 70 transitions, 687 flow. Second operand 7 states and 95 transitions. [2024-11-19 01:47:03,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 159 transitions, 1845 flow [2024-11-19 01:47:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 159 transitions, 1751 flow, removed 47 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:04,006 INFO L231 Difference]: Finished difference. Result has 62 places, 87 transitions, 964 flow [2024-11-19 01:47:04,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=62, PETRI_TRANSITIONS=87} [2024-11-19 01:47:04,007 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 34 predicate places. [2024-11-19 01:47:04,007 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 87 transitions, 964 flow [2024-11-19 01:47:04,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:04,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:04,007 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:04,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:47:04,008 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:04,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1096341284, now seen corresponding path program 5 times [2024-11-19 01:47:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106734480] [2024-11-19 01:47:04,009 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:04,020 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:04,020 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:04,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106734480] [2024-11-19 01:47:04,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106734480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:04,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:04,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:47:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597739519] [2024-11-19 01:47:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:04,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:04,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:04,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:47:04,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 87 transitions, 964 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:04,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:04,316 INFO L124 PetriNetUnfolderBase]: 1103/1661 cut-off events. [2024-11-19 01:47:04,316 INFO L125 PetriNetUnfolderBase]: For 10304/10304 co-relation queries the response was YES. [2024-11-19 01:47:04,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9267 conditions, 1661 events. 1103/1661 cut-off events. For 10304/10304 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7046 event pairs, 356 based on Foata normal form. 12/1673 useless extension candidates. Maximal degree in co-relation 7740. Up to 937 conditions per place. [2024-11-19 01:47:04,335 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 69 selfloop transitions, 24 changer transitions 21/115 dead transitions. [2024-11-19 01:47:04,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 1426 flow [2024-11-19 01:47:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2024-11-19 01:47:04,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-11-19 01:47:04,338 INFO L175 Difference]: Start difference. First operand has 62 places, 87 transitions, 964 flow. Second operand 4 states and 57 transitions. [2024-11-19 01:47:04,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 1426 flow [2024-11-19 01:47:04,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 1405 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:04,359 INFO L231 Difference]: Finished difference. Result has 63 places, 85 transitions, 984 flow [2024-11-19 01:47:04,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=984, PETRI_PLACES=63, PETRI_TRANSITIONS=85} [2024-11-19 01:47:04,362 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2024-11-19 01:47:04,362 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 85 transitions, 984 flow [2024-11-19 01:47:04,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:04,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:04,363 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:04,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:47:04,363 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:04,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1037943898, now seen corresponding path program 1 times [2024-11-19 01:47:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915342701] [2024-11-19 01:47:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:04,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915342701] [2024-11-19 01:47:04,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915342701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:04,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:04,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581137522] [2024-11-19 01:47:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:04,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:04,453 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:04,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 85 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:04,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:04,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:04,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:04,745 INFO L124 PetriNetUnfolderBase]: 1150/1721 cut-off events. [2024-11-19 01:47:04,746 INFO L125 PetriNetUnfolderBase]: For 11329/11329 co-relation queries the response was YES. [2024-11-19 01:47:04,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9859 conditions, 1721 events. 1150/1721 cut-off events. For 11329/11329 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7333 event pairs, 190 based on Foata normal form. 50/1771 useless extension candidates. Maximal degree in co-relation 8412. Up to 808 conditions per place. [2024-11-19 01:47:04,761 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 78 selfloop transitions, 53 changer transitions 20/152 dead transitions. [2024-11-19 01:47:04,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 152 transitions, 1905 flow [2024-11-19 01:47:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:47:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:47:04,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-11-19 01:47:04,763 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5657142857142857 [2024-11-19 01:47:04,763 INFO L175 Difference]: Start difference. First operand has 63 places, 85 transitions, 984 flow. Second operand 7 states and 99 transitions. [2024-11-19 01:47:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 152 transitions, 1905 flow [2024-11-19 01:47:04,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 152 transitions, 1833 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-19 01:47:04,784 INFO L231 Difference]: Finished difference. Result has 69 places, 99 transitions, 1326 flow [2024-11-19 01:47:04,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1326, PETRI_PLACES=69, PETRI_TRANSITIONS=99} [2024-11-19 01:47:04,785 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2024-11-19 01:47:04,786 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 99 transitions, 1326 flow [2024-11-19 01:47:04,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:04,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:04,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:04,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:47:04,786 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:04,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 344085762, now seen corresponding path program 2 times [2024-11-19 01:47:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:04,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009178406] [2024-11-19 01:47:04,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:04,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:04,797 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:04,798 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009178406] [2024-11-19 01:47:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009178406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270387606] [2024-11-19 01:47:04,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:04,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:04,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:04,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:04,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:47:05,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:05,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:05,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:47:05,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:05,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:47:05,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270387606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:05,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:47:05,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-19 01:47:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857069179] [2024-11-19 01:47:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:05,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:47:05,040 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:05,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 99 transitions, 1326 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:05,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:05,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:05,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:05,304 INFO L124 PetriNetUnfolderBase]: 1261/1872 cut-off events. [2024-11-19 01:47:05,304 INFO L125 PetriNetUnfolderBase]: For 16219/16219 co-relation queries the response was YES. [2024-11-19 01:47:05,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11384 conditions, 1872 events. 1261/1872 cut-off events. For 16219/16219 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8114 event pairs, 392 based on Foata normal form. 62/1934 useless extension candidates. Maximal degree in co-relation 9869. Up to 1355 conditions per place. [2024-11-19 01:47:05,328 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 99 selfloop transitions, 57 changer transitions 7/164 dead transitions. [2024-11-19 01:47:05,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 164 transitions, 2344 flow [2024-11-19 01:47:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:47:05,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:47:05,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 83 transitions. [2024-11-19 01:47:05,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-11-19 01:47:05,331 INFO L175 Difference]: Start difference. First operand has 69 places, 99 transitions, 1326 flow. Second operand 6 states and 83 transitions. [2024-11-19 01:47:05,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 164 transitions, 2344 flow [2024-11-19 01:47:05,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 164 transitions, 2220 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:05,369 INFO L231 Difference]: Finished difference. Result has 75 places, 126 transitions, 1821 flow [2024-11-19 01:47:05,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1821, PETRI_PLACES=75, PETRI_TRANSITIONS=126} [2024-11-19 01:47:05,372 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 47 predicate places. [2024-11-19 01:47:05,372 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 126 transitions, 1821 flow [2024-11-19 01:47:05,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:05,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:05,372 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:05,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:47:05,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:05,574 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1473434050, now seen corresponding path program 3 times [2024-11-19 01:47:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084025639] [2024-11-19 01:47:05,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:05,591 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:05,592 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:05,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084025639] [2024-11-19 01:47:05,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084025639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852284077] [2024-11-19 01:47:05,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:05,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:05,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:05,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:05,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:47:05,791 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:05,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:05,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:47:05,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:05,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:05,824 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:47:05,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852284077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:05,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:47:05,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-19 01:47:05,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134255795] [2024-11-19 01:47:05,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:05,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:05,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:05,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:05,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:47:05,826 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:05,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 126 transitions, 1821 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:05,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:05,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:05,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:06,109 INFO L124 PetriNetUnfolderBase]: 1344/1991 cut-off events. [2024-11-19 01:47:06,110 INFO L125 PetriNetUnfolderBase]: For 17891/17891 co-relation queries the response was YES. [2024-11-19 01:47:06,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12869 conditions, 1991 events. 1344/1991 cut-off events. For 17891/17891 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8631 event pairs, 379 based on Foata normal form. 34/2025 useless extension candidates. Maximal degree in co-relation 11468. Up to 1193 conditions per place. [2024-11-19 01:47:06,125 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 99 selfloop transitions, 72 changer transitions 3/175 dead transitions. [2024-11-19 01:47:06,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 175 transitions, 2758 flow [2024-11-19 01:47:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:47:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:47:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-11-19 01:47:06,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-19 01:47:06,127 INFO L175 Difference]: Start difference. First operand has 75 places, 126 transitions, 1821 flow. Second operand 6 states and 75 transitions. [2024-11-19 01:47:06,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 175 transitions, 2758 flow [2024-11-19 01:47:06,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 175 transitions, 2650 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:06,174 INFO L231 Difference]: Finished difference. Result has 83 places, 146 transitions, 2320 flow [2024-11-19 01:47:06,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2320, PETRI_PLACES=83, PETRI_TRANSITIONS=146} [2024-11-19 01:47:06,175 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 55 predicate places. [2024-11-19 01:47:06,175 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 146 transitions, 2320 flow [2024-11-19 01:47:06,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:06,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:06,175 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:06,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:47:06,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:06,376 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:06,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:06,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692860, now seen corresponding path program 4 times [2024-11-19 01:47:06,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:06,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902679568] [2024-11-19 01:47:06,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:06,386 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:06,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:06,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:06,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902679568] [2024-11-19 01:47:06,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902679568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:47:06,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:47:06,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:47:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364777461] [2024-11-19 01:47:06,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:06,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:47:06,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:47:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:47:06,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:06,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 146 transitions, 2320 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:06,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:06,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:06,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:06,786 INFO L124 PetriNetUnfolderBase]: 1351/1965 cut-off events. [2024-11-19 01:47:06,786 INFO L125 PetriNetUnfolderBase]: For 20559/20559 co-relation queries the response was YES. [2024-11-19 01:47:06,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13609 conditions, 1965 events. 1351/1965 cut-off events. For 20559/20559 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8310 event pairs, 341 based on Foata normal form. 36/2001 useless extension candidates. Maximal degree in co-relation 12470. Up to 1290 conditions per place. [2024-11-19 01:47:06,804 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 116 selfloop transitions, 75 changer transitions 9/201 dead transitions. [2024-11-19 01:47:06,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 201 transitions, 3318 flow [2024-11-19 01:47:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:47:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:47:06,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-11-19 01:47:06,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-19 01:47:06,805 INFO L175 Difference]: Start difference. First operand has 83 places, 146 transitions, 2320 flow. Second operand 6 states and 82 transitions. [2024-11-19 01:47:06,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 201 transitions, 3318 flow [2024-11-19 01:47:06,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 201 transitions, 3244 flow, removed 37 selfloop flow, removed 0 redundant places. [2024-11-19 01:47:06,865 INFO L231 Difference]: Finished difference. Result has 91 places, 159 transitions, 2692 flow [2024-11-19 01:47:06,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2692, PETRI_PLACES=91, PETRI_TRANSITIONS=159} [2024-11-19 01:47:06,866 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-11-19 01:47:06,868 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 159 transitions, 2692 flow [2024-11-19 01:47:06,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:06,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:06,868 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:06,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:47:06,869 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:06,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2124859188, now seen corresponding path program 1 times [2024-11-19 01:47:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277638623] [2024-11-19 01:47:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:06,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277638623] [2024-11-19 01:47:06,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277638623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:06,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307212181] [2024-11-19 01:47:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:06,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:06,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:06,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:47:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:07,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 01:47:07,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:07,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:07,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307212181] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:07,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:47:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2024-11-19 01:47:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142330474] [2024-11-19 01:47:07,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:47:07,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:47:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:07,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:47:07,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:47:07,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:07,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 159 transitions, 2692 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:07,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:07,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:07,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:07,351 INFO L124 PetriNetUnfolderBase]: 1381/1954 cut-off events. [2024-11-19 01:47:07,351 INFO L125 PetriNetUnfolderBase]: For 21489/21489 co-relation queries the response was YES. [2024-11-19 01:47:07,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14581 conditions, 1954 events. 1381/1954 cut-off events. For 21489/21489 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7810 event pairs, 188 based on Foata normal form. 27/1981 useless extension candidates. Maximal degree in co-relation 13754. Up to 1480 conditions per place. [2024-11-19 01:47:07,369 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 146 selfloop transitions, 48 changer transitions 1/196 dead transitions. [2024-11-19 01:47:07,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 196 transitions, 3493 flow [2024-11-19 01:47:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:47:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:47:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-11-19 01:47:07,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-19 01:47:07,371 INFO L175 Difference]: Start difference. First operand has 91 places, 159 transitions, 2692 flow. Second operand 4 states and 60 transitions. [2024-11-19 01:47:07,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 196 transitions, 3493 flow [2024-11-19 01:47:07,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 196 transitions, 3238 flow, removed 98 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:07,440 INFO L231 Difference]: Finished difference. Result has 90 places, 167 transitions, 2738 flow [2024-11-19 01:47:07,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2738, PETRI_PLACES=90, PETRI_TRANSITIONS=167} [2024-11-19 01:47:07,441 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-11-19 01:47:07,441 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 167 transitions, 2738 flow [2024-11-19 01:47:07,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:07,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:07,441 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:07,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:07,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-19 01:47:07,642 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:07,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:07,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1221950109, now seen corresponding path program 1 times [2024-11-19 01:47:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:07,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451699681] [2024-11-19 01:47:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451699681] [2024-11-19 01:47:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451699681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527273679] [2024-11-19 01:47:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:47:07,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:07,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:07,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:47:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:07,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:07,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:08,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527273679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:08,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:08,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-19 01:47:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167398806] [2024-11-19 01:47:08,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:08,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:08,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:08,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:08,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 167 transitions, 2738 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:08,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:08,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:08,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:09,094 INFO L124 PetriNetUnfolderBase]: 1929/2731 cut-off events. [2024-11-19 01:47:09,095 INFO L125 PetriNetUnfolderBase]: For 27446/27446 co-relation queries the response was YES. [2024-11-19 01:47:09,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18954 conditions, 2731 events. 1929/2731 cut-off events. For 27446/27446 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 11282 event pairs, 192 based on Foata normal form. 2/2733 useless extension candidates. Maximal degree in co-relation 17304. Up to 2058 conditions per place. [2024-11-19 01:47:09,118 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 191 selfloop transitions, 80 changer transitions 2/274 dead transitions. [2024-11-19 01:47:09,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 274 transitions, 4371 flow [2024-11-19 01:47:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:47:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:47:09,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-11-19 01:47:09,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-11-19 01:47:09,120 INFO L175 Difference]: Start difference. First operand has 90 places, 167 transitions, 2738 flow. Second operand 9 states and 134 transitions. [2024-11-19 01:47:09,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 274 transitions, 4371 flow [2024-11-19 01:47:09,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 274 transitions, 4306 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 01:47:09,241 INFO L231 Difference]: Finished difference. Result has 98 places, 215 transitions, 3725 flow [2024-11-19 01:47:09,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3725, PETRI_PLACES=98, PETRI_TRANSITIONS=215} [2024-11-19 01:47:09,242 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-11-19 01:47:09,243 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 215 transitions, 3725 flow [2024-11-19 01:47:09,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:09,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:09,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:09,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 01:47:09,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:09,448 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:09,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1077805155, now seen corresponding path program 2 times [2024-11-19 01:47:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239725299] [2024-11-19 01:47:09,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:09,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:09,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:09,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239725299] [2024-11-19 01:47:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239725299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:09,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13805214] [2024-11-19 01:47:09,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:09,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:09,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:47:09,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:09,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:09,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:09,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:09,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13805214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:10,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:10,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-19 01:47:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250804878] [2024-11-19 01:47:10,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:10,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:10,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:10,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:10,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:10,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:10,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 215 transitions, 3725 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:10,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:10,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:11,044 INFO L124 PetriNetUnfolderBase]: 2225/3163 cut-off events. [2024-11-19 01:47:11,045 INFO L125 PetriNetUnfolderBase]: For 34340/34340 co-relation queries the response was YES. [2024-11-19 01:47:11,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22709 conditions, 3163 events. 2225/3163 cut-off events. For 34340/34340 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13404 event pairs, 297 based on Foata normal form. 2/3165 useless extension candidates. Maximal degree in co-relation 22105. Up to 2567 conditions per place. [2024-11-19 01:47:11,072 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 209 selfloop transitions, 76 changer transitions 2/288 dead transitions. [2024-11-19 01:47:11,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 288 transitions, 4904 flow [2024-11-19 01:47:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:47:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:47:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-11-19 01:47:11,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-11-19 01:47:11,076 INFO L175 Difference]: Start difference. First operand has 98 places, 215 transitions, 3725 flow. Second operand 9 states and 131 transitions. [2024-11-19 01:47:11,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 288 transitions, 4904 flow [2024-11-19 01:47:11,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 288 transitions, 4638 flow, removed 117 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:11,151 INFO L231 Difference]: Finished difference. Result has 108 places, 234 transitions, 3952 flow [2024-11-19 01:47:11,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3952, PETRI_PLACES=108, PETRI_TRANSITIONS=234} [2024-11-19 01:47:11,151 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 80 predicate places. [2024-11-19 01:47:11,152 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 234 transitions, 3952 flow [2024-11-19 01:47:11,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:11,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:11,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:11,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:11,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:11,353 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:11,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1850213991, now seen corresponding path program 3 times [2024-11-19 01:47:11,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:11,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304160570] [2024-11-19 01:47:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:11,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:11,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:11,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:11,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:11,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304160570] [2024-11-19 01:47:11,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304160570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:11,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816999827] [2024-11-19 01:47:11,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:11,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:11,542 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:11,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:47:11,605 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:11,605 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:11,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:11,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:11,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:11,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:12,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816999827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:12,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:12,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-19 01:47:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384954296] [2024-11-19 01:47:12,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:12,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:12,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:12,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 234 transitions, 3952 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:12,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:12,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:13,002 INFO L124 PetriNetUnfolderBase]: 2757/3922 cut-off events. [2024-11-19 01:47:13,002 INFO L125 PetriNetUnfolderBase]: For 43082/43082 co-relation queries the response was YES. [2024-11-19 01:47:13,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27976 conditions, 3922 events. 2757/3922 cut-off events. For 43082/43082 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 17321 event pairs, 437 based on Foata normal form. 2/3924 useless extension candidates. Maximal degree in co-relation 27506. Up to 3279 conditions per place. [2024-11-19 01:47:13,095 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 254 selfloop transitions, 81 changer transitions 2/338 dead transitions. [2024-11-19 01:47:13,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 338 transitions, 5875 flow [2024-11-19 01:47:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:47:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:47:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-11-19 01:47:13,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2024-11-19 01:47:13,100 INFO L175 Difference]: Start difference. First operand has 108 places, 234 transitions, 3952 flow. Second operand 9 states and 131 transitions. [2024-11-19 01:47:13,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 338 transitions, 5875 flow [2024-11-19 01:47:13,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 338 transitions, 5637 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:13,255 INFO L231 Difference]: Finished difference. Result has 118 places, 283 transitions, 4934 flow [2024-11-19 01:47:13,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=3714, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4934, PETRI_PLACES=118, PETRI_TRANSITIONS=283} [2024-11-19 01:47:13,256 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 90 predicate places. [2024-11-19 01:47:13,256 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 283 transitions, 4934 flow [2024-11-19 01:47:13,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:13,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:13,257 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:13,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:13,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 01:47:13,461 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:13,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:13,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1590867579, now seen corresponding path program 4 times [2024-11-19 01:47:13,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:13,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581539579] [2024-11-19 01:47:13,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:13,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:13,473 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:13,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581539579] [2024-11-19 01:47:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581539579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473892368] [2024-11-19 01:47:13,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:13,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:13,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:13,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:47:13,708 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:13,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:13,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:13,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:13,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:14,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473892368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:14,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:14,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-19 01:47:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205194194] [2024-11-19 01:47:14,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:14,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:14,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:14,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 283 transitions, 4934 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:14,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:15,168 INFO L124 PetriNetUnfolderBase]: 3077/4386 cut-off events. [2024-11-19 01:47:15,168 INFO L125 PetriNetUnfolderBase]: For 49922/49922 co-relation queries the response was YES. [2024-11-19 01:47:15,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31512 conditions, 4386 events. 3077/4386 cut-off events. For 49922/49922 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 19792 event pairs, 566 based on Foata normal form. 2/4388 useless extension candidates. Maximal degree in co-relation 31010. Up to 3797 conditions per place. [2024-11-19 01:47:15,212 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 272 selfloop transitions, 81 changer transitions 2/356 dead transitions. [2024-11-19 01:47:15,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 356 transitions, 6382 flow [2024-11-19 01:47:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:47:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:47:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-11-19 01:47:15,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-11-19 01:47:15,214 INFO L175 Difference]: Start difference. First operand has 118 places, 283 transitions, 4934 flow. Second operand 9 states and 127 transitions. [2024-11-19 01:47:15,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 356 transitions, 6382 flow [2024-11-19 01:47:15,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 356 transitions, 6034 flow, removed 158 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:15,329 INFO L231 Difference]: Finished difference. Result has 128 places, 306 transitions, 5236 flow [2024-11-19 01:47:15,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5236, PETRI_PLACES=128, PETRI_TRANSITIONS=306} [2024-11-19 01:47:15,330 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 100 predicate places. [2024-11-19 01:47:15,330 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 306 transitions, 5236 flow [2024-11-19 01:47:15,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:15,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:15,330 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:15,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:15,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:47:15,531 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:15,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash -918668923, now seen corresponding path program 5 times [2024-11-19 01:47:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393165181] [2024-11-19 01:47:15,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:15,541 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:47:15,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393165181] [2024-11-19 01:47:15,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393165181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:15,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608547104] [2024-11-19 01:47:15,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:15,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:15,753 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:15,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:47:15,819 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:47:15,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:15,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:15,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:15,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:17,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608547104] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:17,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:17,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-11-19 01:47:17,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040890357] [2024-11-19 01:47:17,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:17,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:47:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:17,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:47:17,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:47:17,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:17,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 306 transitions, 5236 flow. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:17,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:17,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:17,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:18,105 INFO L124 PetriNetUnfolderBase]: 3477/4959 cut-off events. [2024-11-19 01:47:18,105 INFO L125 PetriNetUnfolderBase]: For 56054/56054 co-relation queries the response was YES. [2024-11-19 01:47:18,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35294 conditions, 4959 events. 3477/4959 cut-off events. For 56054/56054 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 22825 event pairs, 743 based on Foata normal form. 1/4960 useless extension candidates. Maximal degree in co-relation 34748. Up to 4460 conditions per place. [2024-11-19 01:47:18,150 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 311 selfloop transitions, 73 changer transitions 1/386 dead transitions. [2024-11-19 01:47:18,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 386 transitions, 6980 flow [2024-11-19 01:47:18,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:47:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:47:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-11-19 01:47:18,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-11-19 01:47:18,152 INFO L175 Difference]: Start difference. First operand has 128 places, 306 transitions, 5236 flow. Second operand 8 states and 110 transitions. [2024-11-19 01:47:18,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 386 transitions, 6980 flow [2024-11-19 01:47:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 386 transitions, 6665 flow, removed 123 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:18,309 INFO L231 Difference]: Finished difference. Result has 136 places, 347 transitions, 5917 flow [2024-11-19 01:47:18,309 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=4921, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5917, PETRI_PLACES=136, PETRI_TRANSITIONS=347} [2024-11-19 01:47:18,310 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-11-19 01:47:18,310 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 347 transitions, 5917 flow [2024-11-19 01:47:18,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:18,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:18,310 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:18,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:47:18,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:47:18,511 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:18,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1843783271, now seen corresponding path program 6 times [2024-11-19 01:47:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188039995] [2024-11-19 01:47:18,511 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:47:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:18,524 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:47:18,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188039995] [2024-11-19 01:47:18,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188039995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:18,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227105405] [2024-11-19 01:47:18,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:47:18,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:18,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:18,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:18,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:47:18,725 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:47:18,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:18,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 01:47:18,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:18,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227105405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:20,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 12 [2024-11-19 01:47:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199876317] [2024-11-19 01:47:20,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:20,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:20,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:20,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:20,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:20,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:20,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 347 transitions, 5917 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:20,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:20,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:20,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:21,052 INFO L124 PetriNetUnfolderBase]: 3723/5318 cut-off events. [2024-11-19 01:47:21,052 INFO L125 PetriNetUnfolderBase]: For 60906/60906 co-relation queries the response was YES. [2024-11-19 01:47:21,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37834 conditions, 5318 events. 3723/5318 cut-off events. For 60906/60906 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24896 event pairs, 840 based on Foata normal form. 1/5319 useless extension candidates. Maximal degree in co-relation 37267. Up to 4813 conditions per place. [2024-11-19 01:47:21,114 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 329 selfloop transitions, 71 changer transitions 1/402 dead transitions. [2024-11-19 01:47:21,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 402 transitions, 7307 flow [2024-11-19 01:47:21,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:47:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:47:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-11-19 01:47:21,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-11-19 01:47:21,117 INFO L175 Difference]: Start difference. First operand has 136 places, 347 transitions, 5917 flow. Second operand 8 states and 111 transitions. [2024-11-19 01:47:21,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 402 transitions, 7307 flow [2024-11-19 01:47:21,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 402 transitions, 6961 flow, removed 157 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:21,323 INFO L231 Difference]: Finished difference. Result has 144 places, 363 transitions, 6107 flow [2024-11-19 01:47:21,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6107, PETRI_PLACES=144, PETRI_TRANSITIONS=363} [2024-11-19 01:47:21,323 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 116 predicate places. [2024-11-19 01:47:21,323 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 363 transitions, 6107 flow [2024-11-19 01:47:21,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:21,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:21,324 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:21,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 01:47:21,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:21,524 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:21,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:21,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1165648223, now seen corresponding path program 7 times [2024-11-19 01:47:21,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:21,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500672618] [2024-11-19 01:47:21,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:47:21,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:21,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500672618] [2024-11-19 01:47:21,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500672618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:21,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937902650] [2024-11-19 01:47:21,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:47:21,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:21,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:21,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:21,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 01:47:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:47:21,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:47:21,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:21,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:21,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:21,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937902650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:21,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:21,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-19 01:47:21,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975902558] [2024-11-19 01:47:21,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:21,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:47:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:21,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:47:21,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:47:21,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:21,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 363 transitions, 6107 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:21,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:21,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:23,019 INFO L124 PetriNetUnfolderBase]: 5637/7929 cut-off events. [2024-11-19 01:47:23,019 INFO L125 PetriNetUnfolderBase]: For 98714/98714 co-relation queries the response was YES. [2024-11-19 01:47:23,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55136 conditions, 7929 events. 5637/7929 cut-off events. For 98714/98714 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 38358 event pairs, 456 based on Foata normal form. 59/7988 useless extension candidates. Maximal degree in co-relation 53984. Up to 2668 conditions per place. [2024-11-19 01:47:23,090 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 640 selfloop transitions, 177 changer transitions 0/818 dead transitions. [2024-11-19 01:47:23,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 818 transitions, 14272 flow [2024-11-19 01:47:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:47:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:47:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 191 transitions. [2024-11-19 01:47:23,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5876923076923077 [2024-11-19 01:47:23,092 INFO L175 Difference]: Start difference. First operand has 144 places, 363 transitions, 6107 flow. Second operand 13 states and 191 transitions. [2024-11-19 01:47:23,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 818 transitions, 14272 flow [2024-11-19 01:47:23,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 818 transitions, 13441 flow, removed 382 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:23,492 INFO L231 Difference]: Finished difference. Result has 162 places, 451 transitions, 7656 flow [2024-11-19 01:47:23,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=5799, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7656, PETRI_PLACES=162, PETRI_TRANSITIONS=451} [2024-11-19 01:47:23,493 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-11-19 01:47:23,493 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 451 transitions, 7656 flow [2024-11-19 01:47:23,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:23,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:23,493 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:23,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:23,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:23,694 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:23,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:23,695 INFO L85 PathProgramCache]: Analyzing trace with hash -565803442, now seen corresponding path program 8 times [2024-11-19 01:47:23,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:23,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538217232] [2024-11-19 01:47:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:23,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:23,807 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:23,808 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538217232] [2024-11-19 01:47:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538217232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341539762] [2024-11-19 01:47:23,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:47:23,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:23,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:23,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:23,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 01:47:23,957 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:23,958 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:23,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:47:23,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:24,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:24,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341539762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:24,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-19 01:47:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818502986] [2024-11-19 01:47:24,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:24,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:47:24,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:47:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:47:24,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:24,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 451 transitions, 7656 flow. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 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) [2024-11-19 01:47:24,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:24,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:24,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:26,360 INFO L124 PetriNetUnfolderBase]: 7763/10793 cut-off events. [2024-11-19 01:47:26,361 INFO L125 PetriNetUnfolderBase]: For 165227/165227 co-relation queries the response was YES. [2024-11-19 01:47:26,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86543 conditions, 10793 events. 7763/10793 cut-off events. For 165227/165227 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53175 event pairs, 552 based on Foata normal form. 72/10865 useless extension candidates. Maximal degree in co-relation 84563. Up to 4200 conditions per place. [2024-11-19 01:47:26,459 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 793 selfloop transitions, 209 changer transitions 0/1003 dead transitions. [2024-11-19 01:47:26,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1003 transitions, 18230 flow [2024-11-19 01:47:26,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:47:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:47:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 179 transitions. [2024-11-19 01:47:26,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5507692307692308 [2024-11-19 01:47:26,461 INFO L175 Difference]: Start difference. First operand has 162 places, 451 transitions, 7656 flow. Second operand 13 states and 179 transitions. [2024-11-19 01:47:26,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1003 transitions, 18230 flow [2024-11-19 01:47:27,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1003 transitions, 17363 flow, removed 340 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:27,155 INFO L231 Difference]: Finished difference. Result has 180 places, 546 transitions, 9678 flow [2024-11-19 01:47:27,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=7257, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9678, PETRI_PLACES=180, PETRI_TRANSITIONS=546} [2024-11-19 01:47:27,155 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 152 predicate places. [2024-11-19 01:47:27,155 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 546 transitions, 9678 flow [2024-11-19 01:47:27,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 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) [2024-11-19 01:47:27,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:27,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:27,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 01:47:27,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 01:47:27,356 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:27,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1524349135, now seen corresponding path program 9 times [2024-11-19 01:47:27,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:27,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222904544] [2024-11-19 01:47:27,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:27,369 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:27,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:27,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222904544] [2024-11-19 01:47:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222904544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691489015] [2024-11-19 01:47:27,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:47:27,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:27,460 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:27,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 01:47:27,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:47:27,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:27,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:47:27,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:27,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:27,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691489015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:27,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:27,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-19 01:47:27,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571411107] [2024-11-19 01:47:27,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:27,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:47:27,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:47:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:47:27,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:27,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 546 transitions, 9678 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:27,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:27,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:27,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:30,055 INFO L124 PetriNetUnfolderBase]: 8148/11414 cut-off events. [2024-11-19 01:47:30,055 INFO L125 PetriNetUnfolderBase]: For 226792/226792 co-relation queries the response was YES. [2024-11-19 01:47:30,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97314 conditions, 11414 events. 8148/11414 cut-off events. For 226792/226792 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 57907 event pairs, 1702 based on Foata normal form. 167/11581 useless extension candidates. Maximal degree in co-relation 95146. Up to 6132 conditions per place. [2024-11-19 01:47:30,172 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 656 selfloop transitions, 161 changer transitions 37/855 dead transitions. [2024-11-19 01:47:30,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 855 transitions, 17340 flow [2024-11-19 01:47:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:47:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:47:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-11-19 01:47:30,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-11-19 01:47:30,174 INFO L175 Difference]: Start difference. First operand has 180 places, 546 transitions, 9678 flow. Second operand 8 states and 115 transitions. [2024-11-19 01:47:30,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 855 transitions, 17340 flow [2024-11-19 01:47:31,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 855 transitions, 15646 flow, removed 783 selfloop flow, removed 1 redundant places. [2024-11-19 01:47:31,425 INFO L231 Difference]: Finished difference. Result has 190 places, 604 transitions, 10710 flow [2024-11-19 01:47:31,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=9080, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10710, PETRI_PLACES=190, PETRI_TRANSITIONS=604} [2024-11-19 01:47:31,426 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 162 predicate places. [2024-11-19 01:47:31,426 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 604 transitions, 10710 flow [2024-11-19 01:47:31,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:31,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:31,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:31,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-19 01:47:31,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:31,627 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:31,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1984596775, now seen corresponding path program 10 times [2024-11-19 01:47:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:31,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89395899] [2024-11-19 01:47:31,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:31,638 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:31,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:31,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:31,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89395899] [2024-11-19 01:47:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89395899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751071950] [2024-11-19 01:47:31,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:47:31,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:31,781 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:31,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 01:47:31,837 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:47:31,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:31,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:47:31,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:31,904 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:31,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751071950] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:31,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:31,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-11-19 01:47:31,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872844086] [2024-11-19 01:47:31,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:31,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:47:31,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:47:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:47:31,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:31,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 604 transitions, 10710 flow. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:31,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:31,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:31,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:39,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-19 01:47:41,873 INFO L124 PetriNetUnfolderBase]: 10720/14998 cut-off events. [2024-11-19 01:47:41,873 INFO L125 PetriNetUnfolderBase]: For 310395/310395 co-relation queries the response was YES. [2024-11-19 01:47:41,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125632 conditions, 14998 events. 10720/14998 cut-off events. For 310395/310395 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 79702 event pairs, 853 based on Foata normal form. 630/15628 useless extension candidates. Maximal degree in co-relation 123192. Up to 5663 conditions per place. [2024-11-19 01:47:42,010 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 777 selfloop transitions, 732 changer transitions 93/1603 dead transitions. [2024-11-19 01:47:42,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 1603 transitions, 29736 flow [2024-11-19 01:47:42,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-19 01:47:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2024-11-19 01:47:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 804 transitions. [2024-11-19 01:47:42,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44054794520547946 [2024-11-19 01:47:42,013 INFO L175 Difference]: Start difference. First operand has 190 places, 604 transitions, 10710 flow. Second operand 73 states and 804 transitions. [2024-11-19 01:47:42,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 1603 transitions, 29736 flow [2024-11-19 01:47:43,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1603 transitions, 29303 flow, removed 115 selfloop flow, removed 2 redundant places. [2024-11-19 01:47:43,910 INFO L231 Difference]: Finished difference. Result has 295 places, 1104 transitions, 22584 flow [2024-11-19 01:47:43,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=10339, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=22584, PETRI_PLACES=295, PETRI_TRANSITIONS=1104} [2024-11-19 01:47:43,911 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 267 predicate places. [2024-11-19 01:47:43,911 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 1104 transitions, 22584 flow [2024-11-19 01:47:43,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:47:43,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:47:43,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:47:43,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 01:47:44,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:44,112 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:47:44,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:47:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash -707329995, now seen corresponding path program 11 times [2024-11-19 01:47:44,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:47:44,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592214741] [2024-11-19 01:47:44,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:44,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:47:44,122 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:44,122 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:47:44,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:47:44,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592214741] [2024-11-19 01:47:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592214741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:47:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972190590] [2024-11-19 01:47:44,225 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:47:44,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:47:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:47:44,226 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:47:44,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 01:47:44,283 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:47:44,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:47:44,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:47:44,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:47:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:44,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:47:44,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:47:44,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972190590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:47:44,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:47:44,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-19 01:47:44,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636926130] [2024-11-19 01:47:44,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:47:44,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:47:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:47:44,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:47:44,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:47:44,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:47:44,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1104 transitions, 22584 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 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) [2024-11-19 01:47:44,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:47:44,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:47:44,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:47:52,335 INFO L124 PetriNetUnfolderBase]: 14662/20277 cut-off events. [2024-11-19 01:47:52,335 INFO L125 PetriNetUnfolderBase]: For 791804/791804 co-relation queries the response was YES. [2024-11-19 01:47:52,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209570 conditions, 20277 events. 14662/20277 cut-off events. For 791804/791804 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 111123 event pairs, 646 based on Foata normal form. 731/21008 useless extension candidates. Maximal degree in co-relation 207375. Up to 7625 conditions per place. [2024-11-19 01:47:52,603 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1387 selfloop transitions, 1181 changer transitions 38/2607 dead transitions. [2024-11-19 01:47:52,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 2607 transitions, 59206 flow [2024-11-19 01:47:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-19 01:47:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2024-11-19 01:47:52,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 672 transitions. [2024-11-19 01:47:52,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47157894736842104 [2024-11-19 01:47:52,606 INFO L175 Difference]: Start difference. First operand has 295 places, 1104 transitions, 22584 flow. Second operand 57 states and 672 transitions. [2024-11-19 01:47:52,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 2607 transitions, 59206 flow [2024-11-19 01:48:01,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 2607 transitions, 49434 flow, removed 3969 selfloop flow, removed 8 redundant places. [2024-11-19 01:48:01,821 INFO L231 Difference]: Finished difference. Result has 379 places, 1823 transitions, 37260 flow [2024-11-19 01:48:01,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=17161, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1089, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=521, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=37260, PETRI_PLACES=379, PETRI_TRANSITIONS=1823} [2024-11-19 01:48:01,824 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 351 predicate places. [2024-11-19 01:48:01,824 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 1823 transitions, 37260 flow [2024-11-19 01:48:01,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 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) [2024-11-19 01:48:01,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:48:01,824 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:48:01,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-19 01:48:02,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-19 01:48:02,025 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-19 01:48:02,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:48:02,025 INFO L85 PathProgramCache]: Analyzing trace with hash -130838223, now seen corresponding path program 12 times [2024-11-19 01:48:02,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:48:02,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500286481] [2024-11-19 01:48:02,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:02,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:48:02,036 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:02,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:02,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:02,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:48:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500286481] [2024-11-19 01:48:02,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500286481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:48:02,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049193758] [2024-11-19 01:48:02,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:48:02,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:48:02,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:48:02,225 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:48:02,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 01:48:02,289 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-19 01:48:02,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:48:02,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:48:02,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:48:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:02,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:48:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:48:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049193758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:48:02,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:48:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2024-11-19 01:48:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661395546] [2024-11-19 01:48:02,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:48:02,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:48:02,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:48:02,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:48:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:48:02,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-11-19 01:48:02,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1823 transitions, 37260 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:48:02,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:48:02,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-11-19 01:48:02,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:48:13,689 INFO L124 PetriNetUnfolderBase]: 15983/22053 cut-off events. [2024-11-19 01:48:13,690 INFO L125 PetriNetUnfolderBase]: For 1236412/1236412 co-relation queries the response was YES. [2024-11-19 01:48:13,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262975 conditions, 22053 events. 15983/22053 cut-off events. For 1236412/1236412 co-relation queries the response was YES. Maximal size of possible extension queue 1103. Compared 121313 event pairs, 1461 based on Foata normal form. 236/22289 useless extension candidates. Maximal degree in co-relation 261253. Up to 8227 conditions per place. [2024-11-19 01:48:14,027 INFO L140 encePairwiseOnDemand]: 16/25 looper letters, 1775 selfloop transitions, 1013 changer transitions 0/2789 dead transitions. [2024-11-19 01:48:14,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 2789 transitions, 66321 flow [2024-11-19 01:48:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-19 01:48:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-19 01:48:14,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 594 transitions. [2024-11-19 01:48:14,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46588235294117647 [2024-11-19 01:48:14,030 INFO L175 Difference]: Start difference. First operand has 379 places, 1823 transitions, 37260 flow. Second operand 51 states and 594 transitions. [2024-11-19 01:48:14,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 2789 transitions, 66321 flow