./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i -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 b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 06:49:14,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 06:49:14,452 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 06:49:14,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 06:49:14,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 06:49:14,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 06:49:14,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 06:49:14,488 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 06:49:14,489 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 06:49:14,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 06:49:14,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 06:49:14,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 06:49:14,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 06:49:14,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 06:49:14,491 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 06:49:14,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 06:49:14,493 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 06:49:14,493 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 06:49:14,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 06:49:14,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 06:49:14,494 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 06:49:14,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 06:49:14,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 06:49:14,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 06:49:14,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 06:49:14,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 06:49:14,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 06:49:14,499 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 06:49:14,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:49:14,500 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 06:49:14,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 06:49:14,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 06:49:14,501 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 06:49:14,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 06:49:14,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 06:49:14,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 06:49:14,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-10-13 06:49:14,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 06:49:14,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 06:49:14,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 06:49:14,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 06:49:14,738 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 06:49:14,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-10-13 06:49:16,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 06:49:16,328 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 06:49:16,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-10-13 06:49:16,340 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8e24c84/d478db40ea9c4151b6c052d7b37e713f/FLAGa77ef383b [2024-10-13 06:49:16,355 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8e24c84/d478db40ea9c4151b6c052d7b37e713f [2024-10-13 06:49:16,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 06:49:16,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 06:49:16,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 06:49:16,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 06:49:16,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 06:49:16,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42bd66a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16, skipping insertion in model container [2024-10-13 06:49:16,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,414 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 06:49:16,738 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2024-10-13 06:49:16,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:49:16,751 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 06:49:16,788 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i[30950,30963] [2024-10-13 06:49:16,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 06:49:16,824 INFO L204 MainTranslator]: Completed translation [2024-10-13 06:49:16,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16 WrapperNode [2024-10-13 06:49:16,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 06:49:16,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 06:49:16,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 06:49:16,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 06:49:16,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,866 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-10-13 06:49:16,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 06:49:16,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 06:49:16,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 06:49:16,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 06:49:16,875 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,895 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-13 06:49:16,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 06:49:16,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 06:49:16,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 06:49:16,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 06:49:16,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (1/1) ... [2024-10-13 06:49:16,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 06:49:16,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:16,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 06:49:16,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 06:49:16,995 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-13 06:49:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-13 06:49:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-13 06:49:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-13 06:49:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 06:49:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 06:49:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 06:49:16,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 06:49:16,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 06:49:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 06:49:16,998 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 06:49:17,088 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 06:49:17,090 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 06:49:17,175 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 06:49:17,175 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 06:49:17,239 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 06:49:17,240 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 06:49:17,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:17 BoogieIcfgContainer [2024-10-13 06:49:17,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 06:49:17,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 06:49:17,242 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 06:49:17,244 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 06:49:17,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:49:16" (1/3) ... [2024-10-13 06:49:17,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f83c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:17, skipping insertion in model container [2024-10-13 06:49:17,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:49:16" (2/3) ... [2024-10-13 06:49:17,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f83c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:49:17, skipping insertion in model container [2024-10-13 06:49:17,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:17" (3/3) ... [2024-10-13 06:49:17,246 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-10-13 06:49:17,261 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 06:49:17,261 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 06:49:17,262 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 06:49:17,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 06:49:17,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-10-13 06:49:17,340 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-13 06:49:17,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:49:17,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-10-13 06:49:17,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-10-13 06:49:17,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-10-13 06:49:17,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 06:49:17,369 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;@5a06a03e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 06:49:17,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-13 06:49:17,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 06:49:17,381 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-13 06:49:17,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 06:49:17,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:17,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:17,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:17,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-10-13 06:49:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:17,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300071381] [2024-10-13 06:49:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:17,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:17,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300071381] [2024-10-13 06:49:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300071381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:17,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:17,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 06:49:17,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965626490] [2024-10-13 06:49:17,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:17,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 06:49:17,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:17,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 06:49:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 06:49:17,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:17,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:17,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:17,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:17,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:18,021 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-10-13 06:49:18,022 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 06:49:18,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-10-13 06:49:18,031 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-10-13 06:49:18,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-10-13 06:49:18,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 06:49:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 06:49:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-13 06:49:18,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-13 06:49:18,043 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-10-13 06:49:18,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-10-13 06:49:18,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 06:49:18,047 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-10-13 06:49:18,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-10-13 06:49:18,052 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-13 06:49:18,052 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-10-13 06:49:18,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:18,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:18,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 06:49:18,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:18,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:18,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-10-13 06:49:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208176640] [2024-10-13 06:49:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208176640] [2024-10-13 06:49:18,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208176640] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:18,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:49:18,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296363998] [2024-10-13 06:49:18,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:49:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:49:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:49:18,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:18,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:18,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:18,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:18,486 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-10-13 06:49:18,486 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-10-13 06:49:18,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-10-13 06:49:18,495 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-10-13 06:49:18,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-10-13 06:49:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 06:49:18,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 06:49:18,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-10-13 06:49:18,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 06:49:18,500 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-10-13 06:49:18,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-10-13 06:49:18,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-13 06:49:18,505 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-10-13 06:49:18,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-10-13 06:49:18,506 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-13 06:49:18,509 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-10-13 06:49:18,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:18,510 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:18,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 06:49:18,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:18,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-10-13 06:49:18,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317920825] [2024-10-13 06:49:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:18,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:18,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:18,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317920825] [2024-10-13 06:49:18,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317920825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:18,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:18,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 06:49:18,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001862062] [2024-10-13 06:49:18,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:18,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 06:49:18,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 06:49:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 06:49:18,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:18,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:18,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:18,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:18,848 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-10-13 06:49:18,849 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-10-13 06:49:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-10-13 06:49:18,852 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-10-13 06:49:18,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-10-13 06:49:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 06:49:18,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 06:49:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-10-13 06:49:18,854 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-10-13 06:49:18,854 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-10-13 06:49:18,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-10-13 06:49:18,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-13 06:49:18,859 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-10-13 06:49:18,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-10-13 06:49:18,860 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-10-13 06:49:18,860 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-10-13 06:49:18,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:18,860 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:18,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 06:49:18,861 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:18,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-10-13 06:49:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:18,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107883526] [2024-10-13 06:49:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:18,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:18,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107883526] [2024-10-13 06:49:18,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107883526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:18,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:18,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:49:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956429529] [2024-10-13 06:49:18,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:18,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:49:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:49:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:49:18,998 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:18,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:18,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:18,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:18,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:19,224 INFO L124 PetriNetUnfolderBase]: 337/617 cut-off events. [2024-10-13 06:49:19,224 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2024-10-13 06:49:19,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 617 events. 337/617 cut-off events. For 1712/1724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2588 event pairs, 68 based on Foata normal form. 30/646 useless extension candidates. Maximal degree in co-relation 1916. Up to 237 conditions per place. [2024-10-13 06:49:19,228 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2024-10-13 06:49:19,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2024-10-13 06:49:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 06:49:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 06:49:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-10-13 06:49:19,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-10-13 06:49:19,232 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2024-10-13 06:49:19,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2024-10-13 06:49:19,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-13 06:49:19,239 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2024-10-13 06:49:19,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2024-10-13 06:49:19,242 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-10-13 06:49:19,243 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2024-10-13 06:49:19,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:19,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:19,243 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:19,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 06:49:19,244 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:19,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:19,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-10-13 06:49:19,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:19,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354030453] [2024-10-13 06:49:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354030453] [2024-10-13 06:49:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354030453] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:19,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:49:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209292772] [2024-10-13 06:49:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:19,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:49:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:19,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:49:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:49:19,408 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:19,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:19,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:19,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:19,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:19,637 INFO L124 PetriNetUnfolderBase]: 508/929 cut-off events. [2024-10-13 06:49:19,638 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2024-10-13 06:49:19,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 929 events. 508/929 cut-off events. For 3237/3255 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4211 event pairs, 53 based on Foata normal form. 45/971 useless extension candidates. Maximal degree in co-relation 3046. Up to 253 conditions per place. [2024-10-13 06:49:19,643 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 20 changer transitions 23/103 dead transitions. [2024-10-13 06:49:19,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 771 flow [2024-10-13 06:49:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 06:49:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 06:49:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-10-13 06:49:19,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-13 06:49:19,646 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 141 transitions. [2024-10-13 06:49:19,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 771 flow [2024-10-13 06:49:19,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 705 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-13 06:49:19,654 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 376 flow [2024-10-13 06:49:19,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=376, PETRI_PLACES=65, PETRI_TRANSITIONS=45} [2024-10-13 06:49:19,655 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-13 06:49:19,655 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 376 flow [2024-10-13 06:49:19,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:19,656 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:19,656 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:19,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 06:49:19,656 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:19,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:19,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-10-13 06:49:19,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771411158] [2024-10-13 06:49:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:19,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:19,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771411158] [2024-10-13 06:49:19,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771411158] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:19,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 06:49:19,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 06:49:19,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186035242] [2024-10-13 06:49:19,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:19,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 06:49:19,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:19,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 06:49:19,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 06:49:19,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:19,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 45 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:19,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:19,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:19,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:20,020 INFO L124 PetriNetUnfolderBase]: 481/884 cut-off events. [2024-10-13 06:49:20,021 INFO L125 PetriNetUnfolderBase]: For 5184/5202 co-relation queries the response was YES. [2024-10-13 06:49:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3384 conditions, 884 events. 481/884 cut-off events. For 5184/5202 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4001 event pairs, 59 based on Foata normal form. 63/944 useless extension candidates. Maximal degree in co-relation 3352. Up to 154 conditions per place. [2024-10-13 06:49:20,025 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 25 changer transitions 33/106 dead transitions. [2024-10-13 06:49:20,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 964 flow [2024-10-13 06:49:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 06:49:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-13 06:49:20,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-10-13 06:49:20,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-10-13 06:49:20,028 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 376 flow. Second operand 11 states and 138 transitions. [2024-10-13 06:49:20,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 964 flow [2024-10-13 06:49:20,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 893 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-13 06:49:20,038 INFO L231 Difference]: Finished difference. Result has 73 places, 48 transitions, 475 flow [2024-10-13 06:49:20,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=475, PETRI_PLACES=73, PETRI_TRANSITIONS=48} [2024-10-13 06:49:20,039 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-13 06:49:20,040 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 48 transitions, 475 flow [2024-10-13 06:49:20,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:20,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:20,041 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:20,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 06:49:20,041 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:20,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-10-13 06:49:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:20,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364412957] [2024-10-13 06:49:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364412957] [2024-10-13 06:49:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364412957] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862341560] [2024-10-13 06:49:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:20,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:20,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:20,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:20,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 06:49:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:20,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 06:49:20,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:20,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862341560] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:20,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:20,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 06:49:20,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069967028] [2024-10-13 06:49:20,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:20,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 06:49:20,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:20,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 06:49:20,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-13 06:49:20,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:20,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 48 transitions, 475 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:20,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:20,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:20,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:20,896 INFO L124 PetriNetUnfolderBase]: 589/1094 cut-off events. [2024-10-13 06:49:20,896 INFO L125 PetriNetUnfolderBase]: For 10490/10508 co-relation queries the response was YES. [2024-10-13 06:49:20,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 1094 events. 589/1094 cut-off events. For 10490/10508 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4691 event pairs, 149 based on Foata normal form. 81/1174 useless extension candidates. Maximal degree in co-relation 4699. Up to 522 conditions per place. [2024-10-13 06:49:20,902 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 17 changer transitions 67/154 dead transitions. [2024-10-13 06:49:20,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1547 flow [2024-10-13 06:49:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 06:49:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 06:49:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-10-13 06:49:20,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-13 06:49:20,904 INFO L175 Difference]: Start difference. First operand has 73 places, 48 transitions, 475 flow. Second operand 19 states and 231 transitions. [2024-10-13 06:49:20,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1547 flow [2024-10-13 06:49:20,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 154 transitions, 1448 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-13 06:49:20,914 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 604 flow [2024-10-13 06:49:20,914 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=604, PETRI_PLACES=93, PETRI_TRANSITIONS=54} [2024-10-13 06:49:20,915 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2024-10-13 06:49:20,915 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 604 flow [2024-10-13 06:49:20,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:20,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:20,915 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:20,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:21,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:21,116 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:21,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:21,117 INFO L85 PathProgramCache]: Analyzing trace with hash 410859599, now seen corresponding path program 2 times [2024-10-13 06:49:21,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:21,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819039236] [2024-10-13 06:49:21,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:21,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:21,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:21,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819039236] [2024-10-13 06:49:21,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819039236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:21,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059143409] [2024-10-13 06:49:21,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 06:49:21,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:21,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:21,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:21,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 06:49:21,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 06:49:21,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:21,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 06:49:21,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:21,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:21,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059143409] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:21,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:21,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 06:49:21,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407871716] [2024-10-13 06:49:21,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:21,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 06:49:21,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 06:49:21,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-13 06:49:21,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:21,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 54 transitions, 604 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:21,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:21,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:21,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:22,003 INFO L124 PetriNetUnfolderBase]: 877/1613 cut-off events. [2024-10-13 06:49:22,004 INFO L125 PetriNetUnfolderBase]: For 36575/36593 co-relation queries the response was YES. [2024-10-13 06:49:22,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9220 conditions, 1613 events. 877/1613 cut-off events. For 36575/36593 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7687 event pairs, 68 based on Foata normal form. 90/1702 useless extension candidates. Maximal degree in co-relation 9174. Up to 312 conditions per place. [2024-10-13 06:49:22,016 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 47 changer transitions 80/218 dead transitions. [2024-10-13 06:49:22,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 2806 flow [2024-10-13 06:49:22,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 06:49:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 06:49:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-10-13 06:49:22,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-10-13 06:49:22,020 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 604 flow. Second operand 27 states and 334 transitions. [2024-10-13 06:49:22,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 2806 flow [2024-10-13 06:49:22,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 218 transitions, 2262 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-10-13 06:49:22,043 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 1007 flow [2024-10-13 06:49:22,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1007, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2024-10-13 06:49:22,044 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-10-13 06:49:22,044 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 1007 flow [2024-10-13 06:49:22,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:22,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:22,044 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:22,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 06:49:22,245 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,SelfDestructingSolverStorable7 [2024-10-13 06:49:22,246 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:22,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2010162528, now seen corresponding path program 1 times [2024-10-13 06:49:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991489807] [2024-10-13 06:49:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:22,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991489807] [2024-10-13 06:49:22,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991489807] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:22,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910239108] [2024-10-13 06:49:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:22,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:22,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:22,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:22,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 06:49:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:22,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 06:49:22,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:22,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:22,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910239108] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:22,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:22,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-13 06:49:22,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266678083] [2024-10-13 06:49:22,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:22,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:22,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:22,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:22,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:22,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:22,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 1007 flow. Second operand has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:22,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:22,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:22,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:23,306 INFO L124 PetriNetUnfolderBase]: 1111/2082 cut-off events. [2024-10-13 06:49:23,307 INFO L125 PetriNetUnfolderBase]: For 86453/86459 co-relation queries the response was YES. [2024-10-13 06:49:23,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14592 conditions, 2082 events. 1111/2082 cut-off events. For 86453/86459 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 10786 event pairs, 153 based on Foata normal form. 69/2148 useless extension candidates. Maximal degree in co-relation 14534. Up to 490 conditions per place. [2024-10-13 06:49:23,332 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 51 changer transitions 67/220 dead transitions. [2024-10-13 06:49:23,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 3619 flow [2024-10-13 06:49:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 06:49:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 06:49:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-10-13 06:49:23,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-13 06:49:23,335 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 1007 flow. Second operand 25 states and 309 transitions. [2024-10-13 06:49:23,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 3619 flow [2024-10-13 06:49:23,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 220 transitions, 3039 flow, removed 274 selfloop flow, removed 15 redundant places. [2024-10-13 06:49:23,410 INFO L231 Difference]: Finished difference. Result has 135 places, 81 transitions, 1293 flow [2024-10-13 06:49:23,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1293, PETRI_PLACES=135, PETRI_TRANSITIONS=81} [2024-10-13 06:49:23,411 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2024-10-13 06:49:23,412 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 81 transitions, 1293 flow [2024-10-13 06:49:23,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.066666666666666) internal successors, (106), 15 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:23,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:23,412 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:23,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 06:49:23,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:23,613 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:23,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash 427004722, now seen corresponding path program 2 times [2024-10-13 06:49:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046782745] [2024-10-13 06:49:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046782745] [2024-10-13 06:49:23,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046782745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:23,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048452905] [2024-10-13 06:49:23,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 06:49:23,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:23,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:23,723 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:23,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 06:49:23,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 06:49:23,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:23,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 06:49:23,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:23,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:23,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:23,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048452905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:23,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:23,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-13 06:49:23,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528050568] [2024-10-13 06:49:23,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:23,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:23,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:23,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:23,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:23,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:23,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 81 transitions, 1293 flow. Second operand has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:23,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:23,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:23,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:24,827 INFO L124 PetriNetUnfolderBase]: 1192/2266 cut-off events. [2024-10-13 06:49:24,827 INFO L125 PetriNetUnfolderBase]: For 130343/130349 co-relation queries the response was YES. [2024-10-13 06:49:24,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16874 conditions, 2266 events. 1192/2266 cut-off events. For 130343/130349 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11883 event pairs, 38 based on Foata normal form. 132/2397 useless extension candidates. Maximal degree in co-relation 16809. Up to 480 conditions per place. [2024-10-13 06:49:24,882 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 76 changer transitions 93/261 dead transitions. [2024-10-13 06:49:24,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 261 transitions, 4879 flow [2024-10-13 06:49:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 06:49:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 06:49:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 345 transitions. [2024-10-13 06:49:24,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-10-13 06:49:24,886 INFO L175 Difference]: Start difference. First operand has 135 places, 81 transitions, 1293 flow. Second operand 28 states and 345 transitions. [2024-10-13 06:49:24,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 261 transitions, 4879 flow [2024-10-13 06:49:24,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 4140 flow, removed 336 selfloop flow, removed 18 redundant places. [2024-10-13 06:49:24,993 INFO L231 Difference]: Finished difference. Result has 154 places, 100 transitions, 1854 flow [2024-10-13 06:49:24,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1854, PETRI_PLACES=154, PETRI_TRANSITIONS=100} [2024-10-13 06:49:24,994 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2024-10-13 06:49:24,995 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 100 transitions, 1854 flow [2024-10-13 06:49:24,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0625) internal successors, (113), 16 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:24,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:24,996 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:25,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 06:49:25,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:25,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:25,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 899107870, now seen corresponding path program 3 times [2024-10-13 06:49:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:25,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271863914] [2024-10-13 06:49:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:25,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:25,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:25,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271863914] [2024-10-13 06:49:25,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271863914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:25,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933776349] [2024-10-13 06:49:25,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 06:49:25,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:25,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:25,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:25,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 06:49:25,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-13 06:49:25,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:25,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 06:49:25,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:25,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:25,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:25,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933776349] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:25,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:25,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-10-13 06:49:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36433550] [2024-10-13 06:49:25,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:25,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-13 06:49:25,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:25,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-13 06:49:25,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-10-13 06:49:25,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:25,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 100 transitions, 1854 flow. Second operand has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:25,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:25,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:25,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:26,693 INFO L124 PetriNetUnfolderBase]: 1426/2650 cut-off events. [2024-10-13 06:49:26,693 INFO L125 PetriNetUnfolderBase]: For 187471/187477 co-relation queries the response was YES. [2024-10-13 06:49:26,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21519 conditions, 2650 events. 1426/2650 cut-off events. For 187471/187477 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13546 event pairs, 40 based on Foata normal form. 60/2709 useless extension candidates. Maximal degree in co-relation 21446. Up to 558 conditions per place. [2024-10-13 06:49:26,718 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 98 changer transitions 91/306 dead transitions. [2024-10-13 06:49:26,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 306 transitions, 6134 flow [2024-10-13 06:49:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 06:49:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-13 06:49:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 417 transitions. [2024-10-13 06:49:26,721 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2024-10-13 06:49:26,721 INFO L175 Difference]: Start difference. First operand has 154 places, 100 transitions, 1854 flow. Second operand 34 states and 417 transitions. [2024-10-13 06:49:26,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 306 transitions, 6134 flow [2024-10-13 06:49:26,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 306 transitions, 5138 flow, removed 468 selfloop flow, removed 19 redundant places. [2024-10-13 06:49:26,916 INFO L231 Difference]: Finished difference. Result has 177 places, 122 transitions, 2420 flow [2024-10-13 06:49:26,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2420, PETRI_PLACES=177, PETRI_TRANSITIONS=122} [2024-10-13 06:49:26,918 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2024-10-13 06:49:26,918 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 122 transitions, 2420 flow [2024-10-13 06:49:26,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.086956521739131) internal successors, (163), 23 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:26,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:26,919 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:26,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:27,119 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,SelfDestructingSolverStorable10 [2024-10-13 06:49:27,120 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:27,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -133490771, now seen corresponding path program 4 times [2024-10-13 06:49:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:27,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76362489] [2024-10-13 06:49:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:27,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:27,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76362489] [2024-10-13 06:49:27,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76362489] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268794886] [2024-10-13 06:49:27,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 06:49:27,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:27,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:27,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:27,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 06:49:27,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 06:49:27,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:27,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:27,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:27,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268794886] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:27,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:27,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-13 06:49:27,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274104887] [2024-10-13 06:49:27,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:27,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:27,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:27,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:27,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:27,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 122 transitions, 2420 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:27,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:27,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:27,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:28,278 INFO L124 PetriNetUnfolderBase]: 1408/2676 cut-off events. [2024-10-13 06:49:28,278 INFO L125 PetriNetUnfolderBase]: For 207785/207791 co-relation queries the response was YES. [2024-10-13 06:49:28,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21194 conditions, 2676 events. 1408/2676 cut-off events. For 207785/207791 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14202 event pairs, 477 based on Foata normal form. 33/2706 useless extension candidates. Maximal degree in co-relation 21115. Up to 1645 conditions per place. [2024-10-13 06:49:28,304 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 134 selfloop transitions, 36 changer transitions 47/220 dead transitions. [2024-10-13 06:49:28,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 4638 flow [2024-10-13 06:49:28,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 06:49:28,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-13 06:49:28,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 225 transitions. [2024-10-13 06:49:28,305 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-10-13 06:49:28,305 INFO L175 Difference]: Start difference. First operand has 177 places, 122 transitions, 2420 flow. Second operand 19 states and 225 transitions. [2024-10-13 06:49:28,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 4638 flow [2024-10-13 06:49:28,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 220 transitions, 3635 flow, removed 462 selfloop flow, removed 25 redundant places. [2024-10-13 06:49:28,526 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 2061 flow [2024-10-13 06:49:28,527 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2061, PETRI_PLACES=169, PETRI_TRANSITIONS=126} [2024-10-13 06:49:28,527 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-10-13 06:49:28,527 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 2061 flow [2024-10-13 06:49:28,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:28,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:28,528 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:28,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:28,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:28,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:28,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -450928797, now seen corresponding path program 5 times [2024-10-13 06:49:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:28,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181798673] [2024-10-13 06:49:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:28,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181798673] [2024-10-13 06:49:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181798673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568670645] [2024-10-13 06:49:28,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 06:49:28,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:28,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:28,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 06:49:29,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-13 06:49:29,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:29,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:29,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:29,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568670645] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:29,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-13 06:49:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067785925] [2024-10-13 06:49:29,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:29,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:29,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:29,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:29,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 126 transitions, 2061 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:29,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:29,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:29,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:29,858 INFO L124 PetriNetUnfolderBase]: 1570/3051 cut-off events. [2024-10-13 06:49:29,858 INFO L125 PetriNetUnfolderBase]: For 162098/162104 co-relation queries the response was YES. [2024-10-13 06:49:29,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 3051 events. 1570/3051 cut-off events. For 162098/162104 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17075 event pairs, 396 based on Foata normal form. 33/3083 useless extension candidates. Maximal degree in co-relation 20772. Up to 1489 conditions per place. [2024-10-13 06:49:29,880 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 135 selfloop transitions, 62 changer transitions 53/253 dead transitions. [2024-10-13 06:49:29,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 253 transitions, 4428 flow [2024-10-13 06:49:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-13 06:49:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-13 06:49:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 261 transitions. [2024-10-13 06:49:29,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2024-10-13 06:49:29,884 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 2061 flow. Second operand 22 states and 261 transitions. [2024-10-13 06:49:29,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 253 transitions, 4428 flow [2024-10-13 06:49:30,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 4236 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-10-13 06:49:30,097 INFO L231 Difference]: Finished difference. Result has 187 places, 145 transitions, 2612 flow [2024-10-13 06:49:30,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2612, PETRI_PLACES=187, PETRI_TRANSITIONS=145} [2024-10-13 06:49:30,098 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2024-10-13 06:49:30,098 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 145 transitions, 2612 flow [2024-10-13 06:49:30,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:30,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:30,099 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:30,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 06:49:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:30,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash -584449067, now seen corresponding path program 6 times [2024-10-13 06:49:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300615214] [2024-10-13 06:49:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:30,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:30,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300615214] [2024-10-13 06:49:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300615214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:30,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847391383] [2024-10-13 06:49:30,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 06:49:30,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:30,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:30,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 06:49:30,529 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-13 06:49:30,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:30,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:30,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:30,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847391383] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:30,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-13 06:49:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767992583] [2024-10-13 06:49:30,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:30,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:30,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:30,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 145 transitions, 2612 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:30,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:30,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:30,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:31,510 INFO L124 PetriNetUnfolderBase]: 1624/3177 cut-off events. [2024-10-13 06:49:31,510 INFO L125 PetriNetUnfolderBase]: For 188940/188946 co-relation queries the response was YES. [2024-10-13 06:49:31,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22672 conditions, 3177 events. 1624/3177 cut-off events. For 188940/188946 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17978 event pairs, 327 based on Foata normal form. 33/3207 useless extension candidates. Maximal degree in co-relation 22593. Up to 1171 conditions per place. [2024-10-13 06:49:31,542 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 83 changer transitions 51/256 dead transitions. [2024-10-13 06:49:31,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 256 transitions, 4862 flow [2024-10-13 06:49:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 06:49:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 06:49:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 250 transitions. [2024-10-13 06:49:31,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-10-13 06:49:31,546 INFO L175 Difference]: Start difference. First operand has 187 places, 145 transitions, 2612 flow. Second operand 21 states and 250 transitions. [2024-10-13 06:49:31,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 256 transitions, 4862 flow [2024-10-13 06:49:31,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 256 transitions, 4584 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-10-13 06:49:31,854 INFO L231 Difference]: Finished difference. Result has 200 places, 151 transitions, 2856 flow [2024-10-13 06:49:31,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2856, PETRI_PLACES=200, PETRI_TRANSITIONS=151} [2024-10-13 06:49:31,855 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-10-13 06:49:31,855 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 151 transitions, 2856 flow [2024-10-13 06:49:31,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:31,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:31,855 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:31,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 06:49:32,056 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,SelfDestructingSolverStorable13 [2024-10-13 06:49:32,056 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:32,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:32,057 INFO L85 PathProgramCache]: Analyzing trace with hash -176872313, now seen corresponding path program 7 times [2024-10-13 06:49:32,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:32,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461673135] [2024-10-13 06:49:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:32,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461673135] [2024-10-13 06:49:32,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461673135] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:32,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681819665] [2024-10-13 06:49:32,222 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 06:49:32,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:32,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:32,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:32,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 06:49:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:32,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:32,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:32,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681819665] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-13 06:49:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019154226] [2024-10-13 06:49:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:32,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:32,477 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:32,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 151 transitions, 2856 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:32,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:32,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:32,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:33,272 INFO L124 PetriNetUnfolderBase]: 1750/3465 cut-off events. [2024-10-13 06:49:33,272 INFO L125 PetriNetUnfolderBase]: For 215015/215021 co-relation queries the response was YES. [2024-10-13 06:49:33,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25184 conditions, 3465 events. 1750/3465 cut-off events. For 215015/215021 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 20383 event pairs, 258 based on Foata normal form. 33/3497 useless extension candidates. Maximal degree in co-relation 25101. Up to 1033 conditions per place. [2024-10-13 06:49:33,298 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 122 selfloop transitions, 104 changer transitions 57/286 dead transitions. [2024-10-13 06:49:33,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 5504 flow [2024-10-13 06:49:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 06:49:33,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 06:49:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 287 transitions. [2024-10-13 06:49:33,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4982638888888889 [2024-10-13 06:49:33,299 INFO L175 Difference]: Start difference. First operand has 200 places, 151 transitions, 2856 flow. Second operand 24 states and 287 transitions. [2024-10-13 06:49:33,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 5504 flow [2024-10-13 06:49:33,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 286 transitions, 5144 flow, removed 138 selfloop flow, removed 13 redundant places. [2024-10-13 06:49:33,548 INFO L231 Difference]: Finished difference. Result has 217 places, 166 transitions, 3409 flow [2024-10-13 06:49:33,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3409, PETRI_PLACES=217, PETRI_TRANSITIONS=166} [2024-10-13 06:49:33,549 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-10-13 06:49:33,549 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 166 transitions, 3409 flow [2024-10-13 06:49:33,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:33,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:33,549 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:33,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-13 06:49:33,750 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,SelfDestructingSolverStorable14 [2024-10-13 06:49:33,750 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:33,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash 552481663, now seen corresponding path program 8 times [2024-10-13 06:49:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533981338] [2024-10-13 06:49:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:33,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533981338] [2024-10-13 06:49:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533981338] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657745312] [2024-10-13 06:49:33,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 06:49:33,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:33,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:33,952 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:33,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 06:49:34,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 06:49:34,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:34,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:34,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:34,077 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657745312] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:34,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-13 06:49:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500410996] [2024-10-13 06:49:34,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:34,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:34,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:34,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 166 transitions, 3409 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:34,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:34,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:34,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:35,102 INFO L124 PetriNetUnfolderBase]: 1840/3672 cut-off events. [2024-10-13 06:49:35,102 INFO L125 PetriNetUnfolderBase]: For 231043/231049 co-relation queries the response was YES. [2024-10-13 06:49:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27065 conditions, 3672 events. 1840/3672 cut-off events. For 231043/231049 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 22147 event pairs, 237 based on Foata normal form. 33/3702 useless extension candidates. Maximal degree in co-relation 26975. Up to 859 conditions per place. [2024-10-13 06:49:35,136 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 115 selfloop transitions, 121 changer transitions 55/294 dead transitions. [2024-10-13 06:49:35,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 294 transitions, 6067 flow [2024-10-13 06:49:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 06:49:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 06:49:35,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-10-13 06:49:35,138 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-13 06:49:35,138 INFO L175 Difference]: Start difference. First operand has 217 places, 166 transitions, 3409 flow. Second operand 23 states and 276 transitions. [2024-10-13 06:49:35,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 294 transitions, 6067 flow [2024-10-13 06:49:35,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 294 transitions, 5693 flow, removed 132 selfloop flow, removed 16 redundant places. [2024-10-13 06:49:35,526 INFO L231 Difference]: Finished difference. Result has 229 places, 177 transitions, 3875 flow [2024-10-13 06:49:35,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3875, PETRI_PLACES=229, PETRI_TRANSITIONS=177} [2024-10-13 06:49:35,526 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 203 predicate places. [2024-10-13 06:49:35,526 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 177 transitions, 3875 flow [2024-10-13 06:49:35,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:35,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:35,527 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:35,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 06:49:35,727 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,SelfDestructingSolverStorable15 [2024-10-13 06:49:35,727 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:35,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:35,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1272202843, now seen corresponding path program 9 times [2024-10-13 06:49:35,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:35,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089731062] [2024-10-13 06:49:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:35,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089731062] [2024-10-13 06:49:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089731062] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794313128] [2024-10-13 06:49:35,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 06:49:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:35,889 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:35,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 06:49:35,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-13 06:49:35,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:35,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:35,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:35,998 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:35,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:36,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794313128] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:36,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:36,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-13 06:49:36,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587850114] [2024-10-13 06:49:36,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:36,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:36,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:36,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:36,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 177 transitions, 3875 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:36,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:36,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:36,941 INFO L124 PetriNetUnfolderBase]: 1930/3876 cut-off events. [2024-10-13 06:49:36,941 INFO L125 PetriNetUnfolderBase]: For 261665/261671 co-relation queries the response was YES. [2024-10-13 06:49:36,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29354 conditions, 3876 events. 1930/3876 cut-off events. For 261665/261671 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 23878 event pairs, 174 based on Foata normal form. 33/3908 useless extension candidates. Maximal degree in co-relation 29258. Up to 888 conditions per place. [2024-10-13 06:49:36,973 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 118 selfloop transitions, 138 changer transitions 61/320 dead transitions. [2024-10-13 06:49:36,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 320 transitions, 6735 flow [2024-10-13 06:49:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-13 06:49:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-13 06:49:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 313 transitions. [2024-10-13 06:49:36,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016025641025641 [2024-10-13 06:49:36,975 INFO L175 Difference]: Start difference. First operand has 229 places, 177 transitions, 3875 flow. Second operand 26 states and 313 transitions. [2024-10-13 06:49:36,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 320 transitions, 6735 flow [2024-10-13 06:49:37,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 320 transitions, 6261 flow, removed 168 selfloop flow, removed 16 redundant places. [2024-10-13 06:49:37,379 INFO L231 Difference]: Finished difference. Result has 243 places, 188 transitions, 4314 flow [2024-10-13 06:49:37,379 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4314, PETRI_PLACES=243, PETRI_TRANSITIONS=188} [2024-10-13 06:49:37,380 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 217 predicate places. [2024-10-13 06:49:37,380 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 188 transitions, 4314 flow [2024-10-13 06:49:37,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:37,380 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:37,380 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:37,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 06:49:37,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 06:49:37,581 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:37,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -531512277, now seen corresponding path program 10 times [2024-10-13 06:49:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54099296] [2024-10-13 06:49:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:37,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54099296] [2024-10-13 06:49:37,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54099296] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:37,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048145742] [2024-10-13 06:49:37,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 06:49:37,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:37,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:37,718 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:37,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 06:49:37,766 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 06:49:37,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:37,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:37,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:37,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:37,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048145742] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:37,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:37,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-13 06:49:37,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132596198] [2024-10-13 06:49:37,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:37,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:37,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:37,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:37,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 188 transitions, 4314 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:37,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:37,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:37,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:39,045 INFO L124 PetriNetUnfolderBase]: 2002/4038 cut-off events. [2024-10-13 06:49:39,045 INFO L125 PetriNetUnfolderBase]: For 283050/283056 co-relation queries the response was YES. [2024-10-13 06:49:39,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31107 conditions, 4038 events. 2002/4038 cut-off events. For 283050/283056 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25220 event pairs, 153 based on Foata normal form. 33/4068 useless extension candidates. Maximal degree in co-relation 31006. Up to 924 conditions per place. [2024-10-13 06:49:39,092 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 150 changer transitions 59/326 dead transitions. [2024-10-13 06:49:39,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 326 transitions, 7218 flow [2024-10-13 06:49:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-13 06:49:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-13 06:49:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 302 transitions. [2024-10-13 06:49:39,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-10-13 06:49:39,094 INFO L175 Difference]: Start difference. First operand has 243 places, 188 transitions, 4314 flow. Second operand 25 states and 302 transitions. [2024-10-13 06:49:39,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 326 transitions, 7218 flow [2024-10-13 06:49:39,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 326 transitions, 6694 flow, removed 173 selfloop flow, removed 20 redundant places. [2024-10-13 06:49:39,647 INFO L231 Difference]: Finished difference. Result has 251 places, 197 transitions, 4663 flow [2024-10-13 06:49:39,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3922, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4663, PETRI_PLACES=251, PETRI_TRANSITIONS=197} [2024-10-13 06:49:39,648 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 225 predicate places. [2024-10-13 06:49:39,648 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 197 transitions, 4663 flow [2024-10-13 06:49:39,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:39,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:39,648 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:39,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:39,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 06:49:39,849 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:39,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:39,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1865814495, now seen corresponding path program 11 times [2024-10-13 06:49:39,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:39,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228775362] [2024-10-13 06:49:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:40,002 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228775362] [2024-10-13 06:49:40,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228775362] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:40,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235149258] [2024-10-13 06:49:40,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 06:49:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:40,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:40,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:40,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 06:49:40,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-13 06:49:40,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:40,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:40,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:40,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:40,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235149258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:40,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:40,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-13 06:49:40,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774492833] [2024-10-13 06:49:40,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:40,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:40,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:40,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:40,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:40,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:40,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 197 transitions, 4663 flow. Second operand has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:40,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:40,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:40,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:41,373 INFO L124 PetriNetUnfolderBase]: 2101/4245 cut-off events. [2024-10-13 06:49:41,373 INFO L125 PetriNetUnfolderBase]: For 305493/305499 co-relation queries the response was YES. [2024-10-13 06:49:41,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32941 conditions, 4245 events. 2101/4245 cut-off events. For 305493/305499 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26719 event pairs, 84 based on Foata normal form. 33/4277 useless extension candidates. Maximal degree in co-relation 32836. Up to 966 conditions per place. [2024-10-13 06:49:41,405 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 166 changer transitions 63/351 dead transitions. [2024-10-13 06:49:41,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 351 transitions, 7718 flow [2024-10-13 06:49:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 06:49:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 06:49:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 339 transitions. [2024-10-13 06:49:41,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-10-13 06:49:41,407 INFO L175 Difference]: Start difference. First operand has 251 places, 197 transitions, 4663 flow. Second operand 28 states and 339 transitions. [2024-10-13 06:49:41,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 351 transitions, 7718 flow [2024-10-13 06:49:41,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 351 transitions, 7156 flow, removed 174 selfloop flow, removed 20 redundant places. [2024-10-13 06:49:41,985 INFO L231 Difference]: Finished difference. Result has 262 places, 207 transitions, 4989 flow [2024-10-13 06:49:41,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4989, PETRI_PLACES=262, PETRI_TRANSITIONS=207} [2024-10-13 06:49:41,985 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 236 predicate places. [2024-10-13 06:49:41,985 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 207 transitions, 4989 flow [2024-10-13 06:49:41,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.9375) internal successors, (111), 16 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:41,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:41,986 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:41,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-13 06:49:42,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:42,186 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:42,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:42,187 INFO L85 PathProgramCache]: Analyzing trace with hash 334855933, now seen corresponding path program 12 times [2024-10-13 06:49:42,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:42,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069252758] [2024-10-13 06:49:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:42,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:42,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069252758] [2024-10-13 06:49:42,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069252758] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:42,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692096605] [2024-10-13 06:49:42,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 06:49:42,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:42,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:42,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:42,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 06:49:42,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-13 06:49:42,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:42,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:42,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:42,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692096605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:42,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:42,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-13 06:49:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731535954] [2024-10-13 06:49:42,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:42,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 06:49:42,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 06:49:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-13 06:49:42,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:42,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 207 transitions, 4989 flow. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:42,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:42,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:42,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:43,713 INFO L124 PetriNetUnfolderBase]: 2272/4566 cut-off events. [2024-10-13 06:49:43,713 INFO L125 PetriNetUnfolderBase]: For 350106/350112 co-relation queries the response was YES. [2024-10-13 06:49:43,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36520 conditions, 4566 events. 2272/4566 cut-off events. For 350106/350112 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28964 event pairs, 81 based on Foata normal form. 33/4596 useless extension candidates. Maximal degree in co-relation 36411. Up to 1032 conditions per place. [2024-10-13 06:49:43,750 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 128 selfloop transitions, 174 changer transitions 55/360 dead transitions. [2024-10-13 06:49:43,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 360 transitions, 8295 flow [2024-10-13 06:49:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-13 06:49:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-13 06:49:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 332 transitions. [2024-10-13 06:49:43,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-10-13 06:49:43,752 INFO L175 Difference]: Start difference. First operand has 262 places, 207 transitions, 4989 flow. Second operand 27 states and 332 transitions. [2024-10-13 06:49:43,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 360 transitions, 8295 flow [2024-10-13 06:49:44,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 360 transitions, 7718 flow, removed 189 selfloop flow, removed 21 redundant places. [2024-10-13 06:49:44,313 INFO L231 Difference]: Finished difference. Result has 271 places, 215 transitions, 5398 flow [2024-10-13 06:49:44,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4570, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5398, PETRI_PLACES=271, PETRI_TRANSITIONS=215} [2024-10-13 06:49:44,313 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-10-13 06:49:44,313 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 215 transitions, 5398 flow [2024-10-13 06:49:44,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 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) [2024-10-13 06:49:44,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:44,314 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:44,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-13 06:49:44,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:44,514 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:44,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash 400366853, now seen corresponding path program 13 times [2024-10-13 06:49:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:44,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966684918] [2024-10-13 06:49:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:44,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966684918] [2024-10-13 06:49:44,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966684918] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:44,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963880419] [2024-10-13 06:49:44,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 06:49:44,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:44,678 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:44,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 06:49:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:44,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 06:49:44,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:44,767 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 06:49:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 06:49:44,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963880419] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 06:49:44,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 06:49:44,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-13 06:49:44,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30223527] [2024-10-13 06:49:44,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 06:49:44,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 06:49:44,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:44,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 06:49:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-13 06:49:44,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-13 06:49:44,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 215 transitions, 5398 flow. Second operand has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:44,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:44,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-13 06:49:44,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:45,887 INFO L124 PetriNetUnfolderBase]: 2218/4482 cut-off events. [2024-10-13 06:49:45,887 INFO L125 PetriNetUnfolderBase]: For 364456/364462 co-relation queries the response was YES. [2024-10-13 06:49:45,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36415 conditions, 4482 events. 2218/4482 cut-off events. For 364456/364462 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 28459 event pairs, 78 based on Foata normal form. 51/4532 useless extension candidates. Maximal degree in co-relation 36301. Up to 1008 conditions per place. [2024-10-13 06:49:45,937 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 177 changer transitions 67/366 dead transitions. [2024-10-13 06:49:45,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 366 transitions, 8612 flow [2024-10-13 06:49:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-13 06:49:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-13 06:49:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2024-10-13 06:49:45,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2024-10-13 06:49:45,939 INFO L175 Difference]: Start difference. First operand has 271 places, 215 transitions, 5398 flow. Second operand 28 states and 341 transitions. [2024-10-13 06:49:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 366 transitions, 8612 flow [2024-10-13 06:49:46,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 366 transitions, 7860 flow, removed 244 selfloop flow, removed 22 redundant places. [2024-10-13 06:49:46,715 INFO L231 Difference]: Finished difference. Result has 278 places, 217 transitions, 5432 flow [2024-10-13 06:49:46,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5432, PETRI_PLACES=278, PETRI_TRANSITIONS=217} [2024-10-13 06:49:46,717 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2024-10-13 06:49:46,717 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions, 5432 flow [2024-10-13 06:49:46,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.875) internal successors, (110), 16 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:46,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 06:49:46,718 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 06:49:46,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 06:49:46,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:46,922 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-13 06:49:46,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 06:49:46,923 INFO L85 PathProgramCache]: Analyzing trace with hash -107109742, now seen corresponding path program 14 times [2024-10-13 06:49:46,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 06:49:46,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585631201] [2024-10-13 06:49:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 06:49:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 06:49:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 06:49:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 06:49:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 06:49:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585631201] [2024-10-13 06:49:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585631201] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 06:49:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018770454] [2024-10-13 06:49:47,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 06:49:47,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 06:49:47,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 06:49:47,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 06:49:47,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 06:49:47,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 06:49:47,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 06:49:47,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 06:49:47,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 06:49:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 06:49:47,093 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 06:49:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018770454] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 06:49:47,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 06:49:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-10-13 06:49:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631306229] [2024-10-13 06:49:47,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 06:49:47,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 06:49:47,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 06:49:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 06:49:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-13 06:49:47,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-10-13 06:49:47,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 217 transitions, 5432 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:47,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 06:49:47,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-10-13 06:49:47,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 06:49:48,346 INFO L124 PetriNetUnfolderBase]: 3094/6666 cut-off events. [2024-10-13 06:49:48,347 INFO L125 PetriNetUnfolderBase]: For 365611/366677 co-relation queries the response was YES. [2024-10-13 06:49:48,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39935 conditions, 6666 events. 3094/6666 cut-off events. For 365611/366677 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 53441 event pairs, 171 based on Foata normal form. 266/6320 useless extension candidates. Maximal degree in co-relation 39827. Up to 1324 conditions per place. [2024-10-13 06:49:48,400 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2024-10-13 06:49:48,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 235 transitions, 4711 flow [2024-10-13 06:49:48,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 06:49:48,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 06:49:48,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-13 06:49:48,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-10-13 06:49:48,401 INFO L175 Difference]: Start difference. First operand has 278 places, 217 transitions, 5432 flow. Second operand 8 states and 142 transitions. [2024-10-13 06:49:48,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 235 transitions, 4711 flow [2024-10-13 06:49:48,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 235 transitions, 3973 flow, removed 181 selfloop flow, removed 32 redundant places. [2024-10-13 06:49:48,996 INFO L231 Difference]: Finished difference. Result has 247 places, 0 transitions, 0 flow [2024-10-13 06:49:48,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=247, PETRI_TRANSITIONS=0} [2024-10-13 06:49:48,997 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-10-13 06:49:48,997 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 0 transitions, 0 flow [2024-10-13 06:49:48,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 06:49:48,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-13 06:49:48,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-13 06:49:48,999 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-13 06:49:49,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-13 06:49:49,200 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,SelfDestructingSolverStorable21 [2024-10-13 06:49:49,200 INFO L407 BasicCegarLoop]: Path program histogram: [14, 3, 2, 2, 1] [2024-10-13 06:49:49,204 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-13 06:49:49,204 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-13 06:49:49,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:49:49 BasicIcfg [2024-10-13 06:49:49,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-13 06:49:49,209 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-13 06:49:49,210 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-13 06:49:49,210 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-13 06:49:49,210 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:49:17" (3/4) ... [2024-10-13 06:49:49,212 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-13 06:49:49,215 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-10-13 06:49:49,215 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-10-13 06:49:49,218 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-10-13 06:49:49,218 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-13 06:49:49,218 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-13 06:49:49,218 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-13 06:49:49,283 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-13 06:49:49,283 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-13 06:49:49,283 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-13 06:49:49,284 INFO L158 Benchmark]: Toolchain (without parser) took 32925.66ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 92.9MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 908.3MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,284 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 06:49:49,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.01ms. Allocated memory is still 163.6MB. Free memory was 92.7MB in the beginning and 116.4MB in the end (delta: -23.7MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 114.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,285 INFO L158 Benchmark]: Boogie Preprocessor took 50.65ms. Allocated memory is still 163.6MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,285 INFO L158 Benchmark]: RCFGBuilder took 322.11ms. Allocated memory is still 163.6MB. Free memory was 112.4MB in the beginning and 94.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,285 INFO L158 Benchmark]: TraceAbstraction took 31967.45ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 94.1MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-10-13 06:49:49,285 INFO L158 Benchmark]: Witness Printer took 73.85ms. Allocated memory is still 5.1GB. Free memory was 4.1GB in the beginning and 4.1GB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-13 06:49:49,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 466.01ms. Allocated memory is still 163.6MB. Free memory was 92.7MB in the beginning and 116.4MB in the end (delta: -23.7MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 163.6MB. Free memory was 116.4MB in the beginning and 114.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.65ms. Allocated memory is still 163.6MB. Free memory was 114.5MB in the beginning and 112.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 322.11ms. Allocated memory is still 163.6MB. Free memory was 112.4MB in the beginning and 94.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 31967.45ms. Allocated memory was 163.6MB in the beginning and 5.1GB in the end (delta: 4.9GB). Free memory was 94.1MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 73.85ms. Allocated memory is still 5.1GB. Free memory was 4.1GB in the beginning and 4.1GB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.9s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 21.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4919 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4888 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 323 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6764 IncrementalHoareTripleChecker+Invalid, 7087 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 323 mSolverCounterUnsat, 7 mSDtfsCounter, 6764 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1553 GetRequests, 944 SyntacticMatches, 53 SemanticMatches, 556 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4111 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5432occurred in iteration=21, InterpolantAutomatonStates: 440, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 1164 NumberOfCodeBlocks, 1162 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 1612 ConstructedInterpolants, 0 QuantifiedInterpolants, 6857 SizeOfPredicates, 137 NumberOfNonLiveVariables, 1846 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 53 InterpolantComputations, 7 PerfectInterpolantSequences, 119/1818 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-13 06:49:49,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE