./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:09:53,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:09:53,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:09:53,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:09:53,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:09:53,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:09:53,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:09:53,309 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:09:53,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:09:53,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:09:53,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:09:53,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:09:53,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:09:53,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:09:53,312 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:09:53,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:09:53,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:09:53,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:09:53,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:09:53,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:09:53,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:09:53,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:09:53,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:09:53,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:09:53,316 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:09:53,316 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:09:53,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:09:53,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:09:53,321 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:09:53,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:09:53,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:09:53,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:09:53,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:09:53,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:09:53,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:09:53,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:09:53,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:09:53,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:09:53,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:09:53,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:09:53,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:09:53,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:09:53,324 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b585114ab4aff9777d36c84f93f7abe0931f77338421f004296c8a8d328d3dfd [2024-10-11 14:09:53,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:09:53,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:09:53,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:09:53,605 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:09:53,606 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:09:53,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-10-11 14:09:55,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:09:55,256 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:09:55,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2024-10-11 14:09:55,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8b2f1729d/96f9ad9bf804409dba166b3c25d82e7c/FLAGc0782d2f0 [2024-10-11 14:09:55,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8b2f1729d/96f9ad9bf804409dba166b3c25d82e7c [2024-10-11 14:09:55,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:09:55,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:09:55,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:09:55,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:09:55,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:09:55,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616ed7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55, skipping insertion in model container [2024-10-11 14:09:55,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:09:55,757 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] [2024-10-11 14:09:55,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:09:55,793 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:09:55,844 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] [2024-10-11 14:09:55,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:09:55,884 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:09:55,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55 WrapperNode [2024-10-11 14:09:55,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:09:55,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:09:55,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:09:55,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:09:55,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,932 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-10-11 14:09:55,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:09:55,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:09:55,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:09:55,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:09:55,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,948 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,967 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:09:55,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,977 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,982 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,983 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:55,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:09:55,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:09:55,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:09:55,996 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:09:55,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (1/1) ... [2024-10-11 14:09:56,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:09:56,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:56,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:09:56,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:09:56,082 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-11 14:09:56,082 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-11 14:09:56,083 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-11 14:09:56,083 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-11 14:09:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:09:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:09:56,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:09:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:09:56,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:09:56,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:09:56,087 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:09:56,225 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:09:56,228 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:09:56,374 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:09:56,374 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:09:56,485 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:09:56,485 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 14:09:56,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:09:56 BoogieIcfgContainer [2024-10-11 14:09:56,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:09:56,488 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:09:56,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:09:56,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:09:56,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:09:55" (1/3) ... [2024-10-11 14:09:56,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2211bf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:09:56, skipping insertion in model container [2024-10-11 14:09:56,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:09:55" (2/3) ... [2024-10-11 14:09:56,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2211bf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:09:56, skipping insertion in model container [2024-10-11 14:09:56,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:09:56" (3/3) ... [2024-10-11 14:09:56,497 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2024-10-11 14:09:56,514 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:09:56,516 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 14:09:56,516 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:09:56,560 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:09:56,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-10-11 14:09:56,623 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-11 14:09:56,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:09:56,627 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. [2024-10-11 14:09:56,627 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-10-11 14:09:56,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-10-11 14:09:56,640 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:09:56,647 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;@27a3c200, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:09:56,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-11 14:09:56,663 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:09:56,663 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-11 14:09:56,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:09:56,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:56,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:56,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:56,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:56,673 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-10-11 14:09:56,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022375913] [2024-10-11 14:09:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:57,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:57,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022375913] [2024-10-11 14:09:57,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022375913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:09:57,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532629378] [2024-10-11 14:09:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:57,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:09:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:09:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:09:57,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:57,224 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) [2024-10-11 14:09:57,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:57,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:57,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:57,552 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-10-11 14:09:57,552 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 14:09:57,555 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. [2024-10-11 14:09:57,561 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-10-11 14:09:57,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-10-11 14:09:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:09:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:09:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-11 14:09:57,579 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-11 14:09:57,581 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-10-11 14:09:57,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-10-11 14:09:57,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:09:57,589 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-10-11 14:09:57,591 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} [2024-10-11 14:09:57,596 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-11 14:09:57,597 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-10-11 14:09:57,598 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) [2024-10-11 14:09:57,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:57,598 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:57,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:09:57,599 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:57,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:57,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-10-11 14:09:57,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:57,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480193731] [2024-10-11 14:09:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:57,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480193731] [2024-10-11 14:09:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480193731] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:57,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:09:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516351171] [2024-10-11 14:09:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:57,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:09:57,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:57,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:09:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:09:57,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:57,834 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) [2024-10-11 14:09:57,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:57,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:58,093 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-10-11 14:09:58,094 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-10-11 14:09:58,097 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. [2024-10-11 14:09:58,103 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-10-11 14:09:58,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-10-11 14:09:58,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:09:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:09:58,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-10-11 14:09:58,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-11 14:09:58,110 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-10-11 14:09:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-10-11 14:09:58,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-11 14:09:58,116 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-10-11 14:09:58,116 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} [2024-10-11 14:09:58,117 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-11 14:09:58,117 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-10-11 14:09:58,117 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) [2024-10-11 14:09:58,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:58,117 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:58,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:09:58,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:58,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:58,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-10-11 14:09:58,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:58,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138216782] [2024-10-11 14:09:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:58,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:58,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:58,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138216782] [2024-10-11 14:09:58,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138216782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:58,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:58,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:09:58,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962875624] [2024-10-11 14:09:58,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:58,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:09:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:09:58,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:09:58,278 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:58,279 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) [2024-10-11 14:09:58,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:58,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:58,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:58,493 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-10-11 14:09:58,494 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-10-11 14:09:58,496 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. [2024-10-11 14:09:58,499 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-10-11 14:09:58,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-10-11 14:09:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:09:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:09:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-10-11 14:09:58,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-10-11 14:09:58,501 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-10-11 14:09:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-10-11 14:09:58,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-11 14:09:58,507 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-10-11 14:09:58,508 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} [2024-10-11 14:09:58,508 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-10-11 14:09:58,508 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-10-11 14:09:58,509 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) [2024-10-11 14:09:58,509 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:58,509 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:58,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:09:58,509 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:58,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:58,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-10-11 14:09:58,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:58,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315576287] [2024-10-11 14:09:58,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:58,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:58,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:58,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:58,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315576287] [2024-10-11 14:09:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315576287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:58,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:58,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:09:58,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960126643] [2024-10-11 14:09:58,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:58,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:09:58,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:58,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:09:58,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:09:58,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:58,676 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) [2024-10-11 14:09:58,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:58,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:58,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:58,962 INFO L124 PetriNetUnfolderBase]: 337/617 cut-off events. [2024-10-11 14:09:58,962 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2024-10-11 14:09:58,964 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. [2024-10-11 14:09:58,966 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 16 changer transitions 24/89 dead transitions. [2024-10-11 14:09:58,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 607 flow [2024-10-11 14:09:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:09:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:09:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-10-11 14:09:58,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-10-11 14:09:58,969 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 11 states and 135 transitions. [2024-10-11 14:09:58,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 607 flow [2024-10-11 14:09:58,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 89 transitions, 540 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-11 14:09:58,977 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 279 flow [2024-10-11 14:09:58,977 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} [2024-10-11 14:09:58,978 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 28 predicate places. [2024-10-11 14:09:58,978 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 279 flow [2024-10-11 14:09:58,978 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) [2024-10-11 14:09:58,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:58,979 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:58,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:09:58,979 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:58,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-10-11 14:09:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579376135] [2024-10-11 14:09:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:59,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:59,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:59,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579376135] [2024-10-11 14:09:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579376135] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:09:59,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87729673] [2024-10-11 14:09:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:59,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:09:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:09:59,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:09:59,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:59,103 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) [2024-10-11 14:09:59,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:59,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:59,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:59,366 INFO L124 PetriNetUnfolderBase]: 508/929 cut-off events. [2024-10-11 14:09:59,366 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2024-10-11 14:09:59,368 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. [2024-10-11 14:09:59,372 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 20 changer transitions 23/103 dead transitions. [2024-10-11 14:09:59,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 103 transitions, 771 flow [2024-10-11 14:09:59,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:09:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:09:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-10-11 14:09:59,374 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-11 14:09:59,374 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 279 flow. Second operand 11 states and 141 transitions. [2024-10-11 14:09:59,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 103 transitions, 771 flow [2024-10-11 14:09:59,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 705 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-10-11 14:09:59,382 INFO L231 Difference]: Finished difference. Result has 65 places, 45 transitions, 376 flow [2024-10-11 14:09:59,382 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} [2024-10-11 14:09:59,383 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2024-10-11 14:09:59,383 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 45 transitions, 376 flow [2024-10-11 14:09:59,383 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) [2024-10-11 14:09:59,384 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:59,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:59,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:09:59,384 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:59,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-10-11 14:09:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:59,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372925611] [2024-10-11 14:09:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:59,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:59,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:59,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372925611] [2024-10-11 14:09:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372925611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:09:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:09:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:09:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737113898] [2024-10-11 14:09:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:09:59,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:09:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:09:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:09:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:09:59,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:09:59,518 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) [2024-10-11 14:09:59,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:09:59,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:09:59,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:09:59,766 INFO L124 PetriNetUnfolderBase]: 481/884 cut-off events. [2024-10-11 14:09:59,766 INFO L125 PetriNetUnfolderBase]: For 5184/5202 co-relation queries the response was YES. [2024-10-11 14:09:59,769 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. [2024-10-11 14:09:59,773 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 25 changer transitions 33/106 dead transitions. [2024-10-11 14:09:59,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 106 transitions, 964 flow [2024-10-11 14:09:59,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:09:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:09:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-10-11 14:09:59,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-10-11 14:09:59,775 INFO L175 Difference]: Start difference. First operand has 65 places, 45 transitions, 376 flow. Second operand 11 states and 138 transitions. [2024-10-11 14:09:59,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 106 transitions, 964 flow [2024-10-11 14:09:59,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 893 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-10-11 14:09:59,788 INFO L231 Difference]: Finished difference. Result has 73 places, 48 transitions, 475 flow [2024-10-11 14:09:59,788 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} [2024-10-11 14:09:59,790 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-10-11 14:09:59,791 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 48 transitions, 475 flow [2024-10-11 14:09:59,791 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) [2024-10-11 14:09:59,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:09:59,791 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:09:59,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:09:59,791 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:09:59,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:09:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-10-11 14:09:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:09:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621405421] [2024-10-11 14:09:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:09:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:09:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:09:59,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:09:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621405421] [2024-10-11 14:09:59,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621405421] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:09:59,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772569083] [2024-10-11 14:09:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:09:59,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:09:59,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:09:59,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:09:59,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:10:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:00,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:10:00,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:00,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:00,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772569083] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:00,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:00,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:10:00,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790860737] [2024-10-11 14:10:00,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:00,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:10:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:10:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:10:00,319 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:00,320 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) [2024-10-11 14:10:00,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:00,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:00,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:00,821 INFO L124 PetriNetUnfolderBase]: 589/1094 cut-off events. [2024-10-11 14:10:00,821 INFO L125 PetriNetUnfolderBase]: For 10490/10508 co-relation queries the response was YES. [2024-10-11 14:10:00,825 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. [2024-10-11 14:10:00,829 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 17 changer transitions 67/154 dead transitions. [2024-10-11 14:10:00,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1547 flow [2024-10-11 14:10:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:10:00,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:10:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-10-11 14:10:00,831 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-11 14:10:00,831 INFO L175 Difference]: Start difference. First operand has 73 places, 48 transitions, 475 flow. Second operand 19 states and 231 transitions. [2024-10-11 14:10:00,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1547 flow [2024-10-11 14:10:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 154 transitions, 1448 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 14:10:00,846 INFO L231 Difference]: Finished difference. Result has 93 places, 54 transitions, 604 flow [2024-10-11 14:10:00,846 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} [2024-10-11 14:10:00,847 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 67 predicate places. [2024-10-11 14:10:00,847 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 54 transitions, 604 flow [2024-10-11 14:10:00,847 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) [2024-10-11 14:10:00,847 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:00,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:00,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:01,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:01,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:01,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash 410859599, now seen corresponding path program 2 times [2024-10-11 14:10:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:01,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714982816] [2024-10-11 14:10:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:01,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:01,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:01,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714982816] [2024-10-11 14:10:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714982816] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650813565] [2024-10-11 14:10:01,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:10:01,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:01,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:01,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:01,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:10:01,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:10:01,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:01,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 14:10:01,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:01,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650813565] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:01,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:01,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-11 14:10:01,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661267522] [2024-10-11 14:10:01,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:01,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:10:01,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:10:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:10:01,438 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:01,439 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) [2024-10-11 14:10:01,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:01,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:01,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:02,139 INFO L124 PetriNetUnfolderBase]: 877/1613 cut-off events. [2024-10-11 14:10:02,139 INFO L125 PetriNetUnfolderBase]: For 36575/36593 co-relation queries the response was YES. [2024-10-11 14:10:02,146 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. [2024-10-11 14:10:02,155 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 47 changer transitions 80/218 dead transitions. [2024-10-11 14:10:02,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 2806 flow [2024-10-11 14:10:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:10:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:10:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-10-11 14:10:02,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-10-11 14:10:02,158 INFO L175 Difference]: Start difference. First operand has 93 places, 54 transitions, 604 flow. Second operand 27 states and 334 transitions. [2024-10-11 14:10:02,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 2806 flow [2024-10-11 14:10:02,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 218 transitions, 2262 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-10-11 14:10:02,188 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 1007 flow [2024-10-11 14:10:02,189 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} [2024-10-11 14:10:02,189 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 93 predicate places. [2024-10-11 14:10:02,189 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 1007 flow [2024-10-11 14:10:02,190 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) [2024-10-11 14:10:02,190 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:02,190 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:02,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:10:02,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:02,395 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:02,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:02,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2010162528, now seen corresponding path program 1 times [2024-10-11 14:10:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634889628] [2024-10-11 14:10:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:02,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634889628] [2024-10-11 14:10:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634889628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:02,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920650450] [2024-10-11 14:10:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:02,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:02,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:02,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:02,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:10:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:02,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:10:02,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:02,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920650450] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:02,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-11 14:10:02,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879431312] [2024-10-11 14:10:02,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:02,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:02,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:02,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:02,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:02,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:02,802 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) [2024-10-11 14:10:02,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:02,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:02,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:03,607 INFO L124 PetriNetUnfolderBase]: 1111/2082 cut-off events. [2024-10-11 14:10:03,607 INFO L125 PetriNetUnfolderBase]: For 86453/86459 co-relation queries the response was YES. [2024-10-11 14:10:03,619 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. [2024-10-11 14:10:03,633 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 51 changer transitions 67/220 dead transitions. [2024-10-11 14:10:03,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 3619 flow [2024-10-11 14:10:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:10:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:10:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-10-11 14:10:03,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-11 14:10:03,635 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 1007 flow. Second operand 25 states and 309 transitions. [2024-10-11 14:10:03,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 3619 flow [2024-10-11 14:10:03,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 220 transitions, 3039 flow, removed 274 selfloop flow, removed 15 redundant places. [2024-10-11 14:10:03,767 INFO L231 Difference]: Finished difference. Result has 135 places, 81 transitions, 1293 flow [2024-10-11 14:10:03,767 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} [2024-10-11 14:10:03,768 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 109 predicate places. [2024-10-11 14:10:03,768 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 81 transitions, 1293 flow [2024-10-11 14:10:03,768 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) [2024-10-11 14:10:03,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:03,769 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:03,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:10:03,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:03,970 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:03,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:03,971 INFO L85 PathProgramCache]: Analyzing trace with hash 427004722, now seen corresponding path program 2 times [2024-10-11 14:10:03,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:03,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018863140] [2024-10-11 14:10:03,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:03,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:04,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018863140] [2024-10-11 14:10:04,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018863140] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:04,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135656019] [2024-10-11 14:10:04,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:10:04,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:04,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:04,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:04,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:10:04,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:10:04,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:04,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 14:10:04,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:04,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135656019] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:04,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:04,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-11 14:10:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018726393] [2024-10-11 14:10:04,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:04,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:04,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:04,363 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) [2024-10-11 14:10:04,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:04,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:04,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:05,310 INFO L124 PetriNetUnfolderBase]: 1192/2266 cut-off events. [2024-10-11 14:10:05,311 INFO L125 PetriNetUnfolderBase]: For 130343/130349 co-relation queries the response was YES. [2024-10-11 14:10:05,324 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. [2024-10-11 14:10:05,337 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 89 selfloop transitions, 76 changer transitions 93/261 dead transitions. [2024-10-11 14:10:05,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 261 transitions, 4879 flow [2024-10-11 14:10:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:10:05,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:10:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 345 transitions. [2024-10-11 14:10:05,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5133928571428571 [2024-10-11 14:10:05,340 INFO L175 Difference]: Start difference. First operand has 135 places, 81 transitions, 1293 flow. Second operand 28 states and 345 transitions. [2024-10-11 14:10:05,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 261 transitions, 4879 flow [2024-10-11 14:10:05,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 261 transitions, 4140 flow, removed 336 selfloop flow, removed 18 redundant places. [2024-10-11 14:10:05,544 INFO L231 Difference]: Finished difference. Result has 154 places, 100 transitions, 1854 flow [2024-10-11 14:10:05,545 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} [2024-10-11 14:10:05,545 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 128 predicate places. [2024-10-11 14:10:05,545 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 100 transitions, 1854 flow [2024-10-11 14:10:05,546 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) [2024-10-11 14:10:05,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:05,546 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:05,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:05,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-11 14:10:05,747 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:05,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:05,748 INFO L85 PathProgramCache]: Analyzing trace with hash 899107870, now seen corresponding path program 3 times [2024-10-11 14:10:05,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:05,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100706398] [2024-10-11 14:10:05,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:05,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:05,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100706398] [2024-10-11 14:10:05,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100706398] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:05,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697009370] [2024-10-11 14:10:05,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:10:05,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:05,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:05,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:05,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 14:10:06,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-11 14:10:06,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:06,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 14:10:06,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:06,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697009370] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:06,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2024-10-11 14:10:06,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711488937] [2024-10-11 14:10:06,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:06,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 14:10:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 14:10:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-10-11 14:10:06,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:06,294 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) [2024-10-11 14:10:06,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:06,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:06,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:07,608 INFO L124 PetriNetUnfolderBase]: 1426/2650 cut-off events. [2024-10-11 14:10:07,608 INFO L125 PetriNetUnfolderBase]: For 187471/187477 co-relation queries the response was YES. [2024-10-11 14:10:07,622 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. [2024-10-11 14:10:07,636 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 98 changer transitions 91/306 dead transitions. [2024-10-11 14:10:07,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 306 transitions, 6134 flow [2024-10-11 14:10:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-11 14:10:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-11 14:10:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 417 transitions. [2024-10-11 14:10:07,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2024-10-11 14:10:07,638 INFO L175 Difference]: Start difference. First operand has 154 places, 100 transitions, 1854 flow. Second operand 34 states and 417 transitions. [2024-10-11 14:10:07,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 306 transitions, 6134 flow [2024-10-11 14:10:07,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 306 transitions, 5138 flow, removed 468 selfloop flow, removed 19 redundant places. [2024-10-11 14:10:07,811 INFO L231 Difference]: Finished difference. Result has 177 places, 122 transitions, 2420 flow [2024-10-11 14:10:07,811 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} [2024-10-11 14:10:07,811 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 151 predicate places. [2024-10-11 14:10:07,811 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 122 transitions, 2420 flow [2024-10-11 14:10:07,812 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) [2024-10-11 14:10:07,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:07,812 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:07,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 14:10:08,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 14:10:08,017 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:08,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash -133490771, now seen corresponding path program 4 times [2024-10-11 14:10:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:08,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889052593] [2024-10-11 14:10:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:08,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:08,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:08,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889052593] [2024-10-11 14:10:08,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889052593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:08,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990311896] [2024-10-11 14:10:08,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:10:08,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:08,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:08,326 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:08,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 14:10:08,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:10:08,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:08,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:08,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:08,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:08,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990311896] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:08,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:08,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-11 14:10:08,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848877313] [2024-10-11 14:10:08,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:08,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:08,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:08,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:08,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:08,697 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) [2024-10-11 14:10:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:09,452 INFO L124 PetriNetUnfolderBase]: 1408/2676 cut-off events. [2024-10-11 14:10:09,453 INFO L125 PetriNetUnfolderBase]: For 207785/207791 co-relation queries the response was YES. [2024-10-11 14:10:09,466 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. [2024-10-11 14:10:09,481 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 134 selfloop transitions, 36 changer transitions 47/220 dead transitions. [2024-10-11 14:10:09,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 220 transitions, 4638 flow [2024-10-11 14:10:09,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-11 14:10:09,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-11 14:10:09,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 225 transitions. [2024-10-11 14:10:09,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-10-11 14:10:09,483 INFO L175 Difference]: Start difference. First operand has 177 places, 122 transitions, 2420 flow. Second operand 19 states and 225 transitions. [2024-10-11 14:10:09,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 220 transitions, 4638 flow [2024-10-11 14:10:09,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 220 transitions, 3635 flow, removed 462 selfloop flow, removed 25 redundant places. [2024-10-11 14:10:09,782 INFO L231 Difference]: Finished difference. Result has 169 places, 126 transitions, 2061 flow [2024-10-11 14:10:09,783 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} [2024-10-11 14:10:09,783 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 143 predicate places. [2024-10-11 14:10:09,783 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 126 transitions, 2061 flow [2024-10-11 14:10:09,784 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) [2024-10-11 14:10:09,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:09,784 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:09,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:09,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-11 14:10:09,985 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:09,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash -450928797, now seen corresponding path program 5 times [2024-10-11 14:10:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149982199] [2024-10-11 14:10:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:10,273 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:10,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:10,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149982199] [2024-10-11 14:10:10,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149982199] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:10,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297493572] [2024-10-11 14:10:10,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:10:10,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:10,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:10,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:10,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 14:10:10,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 14:10:10,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:10,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:10,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:10,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:10,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297493572] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:10,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:10,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-11 14:10:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431457219] [2024-10-11 14:10:10,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:10,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:10,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:10,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:10,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:10,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:10,633 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) [2024-10-11 14:10:10,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:10,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:10,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:11,287 INFO L124 PetriNetUnfolderBase]: 1570/3051 cut-off events. [2024-10-11 14:10:11,288 INFO L125 PetriNetUnfolderBase]: For 162098/162104 co-relation queries the response was YES. [2024-10-11 14:10:11,300 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. [2024-10-11 14:10:11,315 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 135 selfloop transitions, 62 changer transitions 53/253 dead transitions. [2024-10-11 14:10:11,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 253 transitions, 4428 flow [2024-10-11 14:10:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 14:10:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 14:10:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 261 transitions. [2024-10-11 14:10:11,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4943181818181818 [2024-10-11 14:10:11,317 INFO L175 Difference]: Start difference. First operand has 169 places, 126 transitions, 2061 flow. Second operand 22 states and 261 transitions. [2024-10-11 14:10:11,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 253 transitions, 4428 flow [2024-10-11 14:10:11,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 4236 flow, removed 72 selfloop flow, removed 12 redundant places. [2024-10-11 14:10:11,591 INFO L231 Difference]: Finished difference. Result has 187 places, 145 transitions, 2612 flow [2024-10-11 14:10:11,591 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} [2024-10-11 14:10:11,592 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 161 predicate places. [2024-10-11 14:10:11,592 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 145 transitions, 2612 flow [2024-10-11 14:10:11,592 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) [2024-10-11 14:10:11,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:11,592 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:11,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:11,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:11,793 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:11,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -584449067, now seen corresponding path program 6 times [2024-10-11 14:10:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325574507] [2024-10-11 14:10:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325574507] [2024-10-11 14:10:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325574507] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447181231] [2024-10-11 14:10:12,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:10:12,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:12,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:12,009 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:12,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 14:10:12,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 14:10:12,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:12,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:12,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:12,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:12,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447181231] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:12,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:12,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-11 14:10:12,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972537891] [2024-10-11 14:10:12,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:12,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:12,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:12,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:12,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:12,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:12,322 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) [2024-10-11 14:10:12,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:12,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:13,038 INFO L124 PetriNetUnfolderBase]: 1624/3177 cut-off events. [2024-10-11 14:10:13,039 INFO L125 PetriNetUnfolderBase]: For 188940/188946 co-relation queries the response was YES. [2024-10-11 14:10:13,053 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. [2024-10-11 14:10:13,071 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 83 changer transitions 51/256 dead transitions. [2024-10-11 14:10:13,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 256 transitions, 4862 flow [2024-10-11 14:10:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 14:10:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 14:10:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 250 transitions. [2024-10-11 14:10:13,073 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-10-11 14:10:13,073 INFO L175 Difference]: Start difference. First operand has 187 places, 145 transitions, 2612 flow. Second operand 21 states and 250 transitions. [2024-10-11 14:10:13,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 256 transitions, 4862 flow [2024-10-11 14:10:13,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 256 transitions, 4584 flow, removed 117 selfloop flow, removed 11 redundant places. [2024-10-11 14:10:13,491 INFO L231 Difference]: Finished difference. Result has 200 places, 151 transitions, 2856 flow [2024-10-11 14:10:13,491 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} [2024-10-11 14:10:13,492 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 174 predicate places. [2024-10-11 14:10:13,492 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 151 transitions, 2856 flow [2024-10-11 14:10:13,492 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) [2024-10-11 14:10:13,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:13,493 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:13,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:13,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 14:10:13,693 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:13,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash -176872313, now seen corresponding path program 7 times [2024-10-11 14:10:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:13,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116667258] [2024-10-11 14:10:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:13,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:13,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116667258] [2024-10-11 14:10:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116667258] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483448081] [2024-10-11 14:10:13,943 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:10:13,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:13,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:13,945 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:13,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 14:10:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:14,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:14,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:14,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:14,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483448081] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:14,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:14,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-11 14:10:14,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414751735] [2024-10-11 14:10:14,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:14,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:14,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:14,244 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) [2024-10-11 14:10:14,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:14,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:14,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:15,013 INFO L124 PetriNetUnfolderBase]: 1750/3465 cut-off events. [2024-10-11 14:10:15,013 INFO L125 PetriNetUnfolderBase]: For 215015/215021 co-relation queries the response was YES. [2024-10-11 14:10:15,030 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. [2024-10-11 14:10:15,043 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 122 selfloop transitions, 104 changer transitions 57/286 dead transitions. [2024-10-11 14:10:15,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 286 transitions, 5504 flow [2024-10-11 14:10:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-11 14:10:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-11 14:10:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 287 transitions. [2024-10-11 14:10:15,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4982638888888889 [2024-10-11 14:10:15,044 INFO L175 Difference]: Start difference. First operand has 200 places, 151 transitions, 2856 flow. Second operand 24 states and 287 transitions. [2024-10-11 14:10:15,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 286 transitions, 5504 flow [2024-10-11 14:10:15,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 286 transitions, 5144 flow, removed 138 selfloop flow, removed 13 redundant places. [2024-10-11 14:10:15,441 INFO L231 Difference]: Finished difference. Result has 217 places, 166 transitions, 3409 flow [2024-10-11 14:10:15,442 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} [2024-10-11 14:10:15,442 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 191 predicate places. [2024-10-11 14:10:15,442 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 166 transitions, 3409 flow [2024-10-11 14:10:15,443 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) [2024-10-11 14:10:15,443 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:15,443 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:15,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:15,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:15,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:15,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash 552481663, now seen corresponding path program 8 times [2024-10-11 14:10:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607135395] [2024-10-11 14:10:15,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:15,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:15,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607135395] [2024-10-11 14:10:15,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607135395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:15,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846050716] [2024-10-11 14:10:15,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:10:15,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:15,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:15,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 14:10:15,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:10:15,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:15,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:15,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:15,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846050716] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:16,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-11 14:10:16,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540135740] [2024-10-11 14:10:16,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:16,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:16,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:16,133 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) [2024-10-11 14:10:16,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:16,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:16,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:17,031 INFO L124 PetriNetUnfolderBase]: 1840/3672 cut-off events. [2024-10-11 14:10:17,032 INFO L125 PetriNetUnfolderBase]: For 231043/231049 co-relation queries the response was YES. [2024-10-11 14:10:17,046 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. [2024-10-11 14:10:17,057 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 115 selfloop transitions, 121 changer transitions 55/294 dead transitions. [2024-10-11 14:10:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 294 transitions, 6067 flow [2024-10-11 14:10:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-11 14:10:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-11 14:10:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 276 transitions. [2024-10-11 14:10:17,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 14:10:17,059 INFO L175 Difference]: Start difference. First operand has 217 places, 166 transitions, 3409 flow. Second operand 23 states and 276 transitions. [2024-10-11 14:10:17,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 294 transitions, 6067 flow [2024-10-11 14:10:17,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 294 transitions, 5693 flow, removed 132 selfloop flow, removed 16 redundant places. [2024-10-11 14:10:17,365 INFO L231 Difference]: Finished difference. Result has 229 places, 177 transitions, 3875 flow [2024-10-11 14:10:17,365 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} [2024-10-11 14:10:17,365 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 203 predicate places. [2024-10-11 14:10:17,365 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 177 transitions, 3875 flow [2024-10-11 14:10:17,366 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) [2024-10-11 14:10:17,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:17,366 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:17,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:17,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 14:10:17,567 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:17,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:17,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1272202843, now seen corresponding path program 9 times [2024-10-11 14:10:17,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:17,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213482879] [2024-10-11 14:10:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213482879] [2024-10-11 14:10:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213482879] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:17,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834002550] [2024-10-11 14:10:17,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 14:10:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:17,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:17,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:17,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-11 14:10:17,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-11 14:10:17,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:17,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:17,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:17,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834002550] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:18,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:18,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-11 14:10:18,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726111974] [2024-10-11 14:10:18,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:18,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:18,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:18,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:18,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:18,074 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) [2024-10-11 14:10:18,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:18,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:18,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:18,965 INFO L124 PetriNetUnfolderBase]: 1930/3876 cut-off events. [2024-10-11 14:10:18,966 INFO L125 PetriNetUnfolderBase]: For 261665/261671 co-relation queries the response was YES. [2024-10-11 14:10:18,986 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. [2024-10-11 14:10:18,999 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 118 selfloop transitions, 138 changer transitions 61/320 dead transitions. [2024-10-11 14:10:18,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 320 transitions, 6735 flow [2024-10-11 14:10:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-11 14:10:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-11 14:10:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 313 transitions. [2024-10-11 14:10:19,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5016025641025641 [2024-10-11 14:10:19,002 INFO L175 Difference]: Start difference. First operand has 229 places, 177 transitions, 3875 flow. Second operand 26 states and 313 transitions. [2024-10-11 14:10:19,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 320 transitions, 6735 flow [2024-10-11 14:10:19,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 320 transitions, 6261 flow, removed 168 selfloop flow, removed 16 redundant places. [2024-10-11 14:10:19,377 INFO L231 Difference]: Finished difference. Result has 243 places, 188 transitions, 4314 flow [2024-10-11 14:10:19,377 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} [2024-10-11 14:10:19,378 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 217 predicate places. [2024-10-11 14:10:19,378 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 188 transitions, 4314 flow [2024-10-11 14:10:19,378 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) [2024-10-11 14:10:19,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:19,378 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:19,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:19,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-11 14:10:19,579 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:19,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:19,580 INFO L85 PathProgramCache]: Analyzing trace with hash -531512277, now seen corresponding path program 10 times [2024-10-11 14:10:19,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:19,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778667246] [2024-10-11 14:10:19,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:19,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:19,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778667246] [2024-10-11 14:10:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778667246] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213931664] [2024-10-11 14:10:19,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-11 14:10:19,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:19,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:19,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-11 14:10:19,851 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-11 14:10:19,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:19,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:19,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:19,925 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:19,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:20,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213931664] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:20,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:20,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-11 14:10:20,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258971148] [2024-10-11 14:10:20,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:20,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:20,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:20,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:20,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:20,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:20,077 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) [2024-10-11 14:10:20,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:20,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:20,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:21,158 INFO L124 PetriNetUnfolderBase]: 2002/4038 cut-off events. [2024-10-11 14:10:21,158 INFO L125 PetriNetUnfolderBase]: For 283050/283056 co-relation queries the response was YES. [2024-10-11 14:10:21,180 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. [2024-10-11 14:10:21,191 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 150 changer transitions 59/326 dead transitions. [2024-10-11 14:10:21,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 326 transitions, 7218 flow [2024-10-11 14:10:21,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 14:10:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-11 14:10:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 302 transitions. [2024-10-11 14:10:21,193 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-10-11 14:10:21,193 INFO L175 Difference]: Start difference. First operand has 243 places, 188 transitions, 4314 flow. Second operand 25 states and 302 transitions. [2024-10-11 14:10:21,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 326 transitions, 7218 flow [2024-10-11 14:10:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 326 transitions, 6694 flow, removed 173 selfloop flow, removed 20 redundant places. [2024-10-11 14:10:21,608 INFO L231 Difference]: Finished difference. Result has 251 places, 197 transitions, 4663 flow [2024-10-11 14:10:21,609 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} [2024-10-11 14:10:21,609 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 225 predicate places. [2024-10-11 14:10:21,609 INFO L471 AbstractCegarLoop]: Abstraction has has 251 places, 197 transitions, 4663 flow [2024-10-11 14:10:21,609 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) [2024-10-11 14:10:21,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:21,610 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:21,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:21,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 14:10:21,810 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:21,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:21,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1865814495, now seen corresponding path program 11 times [2024-10-11 14:10:21,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821290892] [2024-10-11 14:10:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:22,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821290892] [2024-10-11 14:10:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821290892] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183959838] [2024-10-11 14:10:22,054 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-11 14:10:22,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:22,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:22,056 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:22,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-11 14:10:22,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-11 14:10:22,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:22,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:22,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:22,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183959838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:22,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:22,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-11 14:10:22,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942271743] [2024-10-11 14:10:22,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:22,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:22,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:22,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:22,326 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) [2024-10-11 14:10:22,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:22,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:22,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:23,467 INFO L124 PetriNetUnfolderBase]: 2101/4245 cut-off events. [2024-10-11 14:10:23,467 INFO L125 PetriNetUnfolderBase]: For 305493/305499 co-relation queries the response was YES. [2024-10-11 14:10:23,503 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. [2024-10-11 14:10:23,520 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 166 changer transitions 63/351 dead transitions. [2024-10-11 14:10:23,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 351 transitions, 7718 flow [2024-10-11 14:10:23,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:10:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:10:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 339 transitions. [2024-10-11 14:10:23,523 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-10-11 14:10:23,523 INFO L175 Difference]: Start difference. First operand has 251 places, 197 transitions, 4663 flow. Second operand 28 states and 339 transitions. [2024-10-11 14:10:23,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 351 transitions, 7718 flow [2024-10-11 14:10:24,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 351 transitions, 7156 flow, removed 174 selfloop flow, removed 20 redundant places. [2024-10-11 14:10:24,064 INFO L231 Difference]: Finished difference. Result has 262 places, 207 transitions, 4989 flow [2024-10-11 14:10:24,064 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} [2024-10-11 14:10:24,064 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 236 predicate places. [2024-10-11 14:10:24,065 INFO L471 AbstractCegarLoop]: Abstraction has has 262 places, 207 transitions, 4989 flow [2024-10-11 14:10:24,065 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) [2024-10-11 14:10:24,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:24,065 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:24,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:24,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:24,270 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:24,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash 334855933, now seen corresponding path program 12 times [2024-10-11 14:10:24,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:24,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124651847] [2024-10-11 14:10:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:24,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124651847] [2024-10-11 14:10:24,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124651847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275449593] [2024-10-11 14:10:24,449 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-11 14:10:24,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:24,451 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:24,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-11 14:10:24,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-11 14:10:24,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:24,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:24,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:24,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:24,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275449593] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:24,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 14 [2024-10-11 14:10:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525643445] [2024-10-11 14:10:24,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:24,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 14:10:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 14:10:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-11 14:10:24,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:24,696 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) [2024-10-11 14:10:24,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:24,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:24,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:25,714 INFO L124 PetriNetUnfolderBase]: 2272/4566 cut-off events. [2024-10-11 14:10:25,714 INFO L125 PetriNetUnfolderBase]: For 350106/350112 co-relation queries the response was YES. [2024-10-11 14:10:25,739 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. [2024-10-11 14:10:25,755 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 128 selfloop transitions, 174 changer transitions 55/360 dead transitions. [2024-10-11 14:10:25,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 360 transitions, 8295 flow [2024-10-11 14:10:25,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-11 14:10:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-11 14:10:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 332 transitions. [2024-10-11 14:10:25,757 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-10-11 14:10:25,757 INFO L175 Difference]: Start difference. First operand has 262 places, 207 transitions, 4989 flow. Second operand 27 states and 332 transitions. [2024-10-11 14:10:25,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 360 transitions, 8295 flow [2024-10-11 14:10:26,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 360 transitions, 7718 flow, removed 189 selfloop flow, removed 21 redundant places. [2024-10-11 14:10:26,290 INFO L231 Difference]: Finished difference. Result has 271 places, 215 transitions, 5398 flow [2024-10-11 14:10:26,290 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} [2024-10-11 14:10:26,291 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-10-11 14:10:26,291 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 215 transitions, 5398 flow [2024-10-11 14:10:26,291 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) [2024-10-11 14:10:26,291 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:26,291 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:26,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-11 14:10:26,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:26,492 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:26,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 400366853, now seen corresponding path program 13 times [2024-10-11 14:10:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861474692] [2024-10-11 14:10:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861474692] [2024-10-11 14:10:26,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861474692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:26,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148161794] [2024-10-11 14:10:26,673 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-11 14:10:26,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:26,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:26,675 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:26,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-11 14:10:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:26,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 14:10:26,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:26,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:10:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:10:26,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148161794] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:10:26,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:10:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 15 [2024-10-11 14:10:26,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429627215] [2024-10-11 14:10:26,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:10:26,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-11 14:10:26,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-11 14:10:26,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-10-11 14:10:26,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-11 14:10:26,892 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) [2024-10-11 14:10:26,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:26,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-11 14:10:26,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:27,993 INFO L124 PetriNetUnfolderBase]: 2218/4482 cut-off events. [2024-10-11 14:10:27,993 INFO L125 PetriNetUnfolderBase]: For 364456/364462 co-relation queries the response was YES. [2024-10-11 14:10:28,017 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. [2024-10-11 14:10:28,032 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 119 selfloop transitions, 177 changer transitions 67/366 dead transitions. [2024-10-11 14:10:28,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 366 transitions, 8612 flow [2024-10-11 14:10:28,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-11 14:10:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-10-11 14:10:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 341 transitions. [2024-10-11 14:10:28,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5074404761904762 [2024-10-11 14:10:28,034 INFO L175 Difference]: Start difference. First operand has 271 places, 215 transitions, 5398 flow. Second operand 28 states and 341 transitions. [2024-10-11 14:10:28,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 366 transitions, 8612 flow [2024-10-11 14:10:28,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 366 transitions, 7860 flow, removed 244 selfloop flow, removed 22 redundant places. [2024-10-11 14:10:28,621 INFO L231 Difference]: Finished difference. Result has 278 places, 217 transitions, 5432 flow [2024-10-11 14:10:28,621 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} [2024-10-11 14:10:28,621 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 252 predicate places. [2024-10-11 14:10:28,621 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions, 5432 flow [2024-10-11 14:10:28,622 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) [2024-10-11 14:10:28,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:10:28,622 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:10:28,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-11 14:10:28,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:28,822 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-11 14:10:28,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:10:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash -107109742, now seen corresponding path program 14 times [2024-10-11 14:10:28,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:10:28,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373882856] [2024-10-11 14:10:28,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:10:28,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:10:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:10:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:10:28,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:10:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373882856] [2024-10-11 14:10:28,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373882856] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:10:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158196311] [2024-10-11 14:10:28,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:10:28,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:10:28,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:10:28,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:10:28,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-11 14:10:28,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:10:28,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:10:28,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 14:10:28,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:10:29,003 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 14:10:29,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 14:10:29,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158196311] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:10:29,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 14:10:29,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2024-10-11 14:10:29,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448403352] [2024-10-11 14:10:29,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:10:29,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:10:29,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:10:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:10:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-10-11 14:10:29,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 24 [2024-10-11 14:10:29,009 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) [2024-10-11 14:10:29,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:10:29,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 24 [2024-10-11 14:10:29,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:10:30,028 INFO L124 PetriNetUnfolderBase]: 3094/6666 cut-off events. [2024-10-11 14:10:30,029 INFO L125 PetriNetUnfolderBase]: For 365611/366677 co-relation queries the response was YES. [2024-10-11 14:10:30,073 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. [2024-10-11 14:10:30,080 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 0 selfloop transitions, 0 changer transitions 235/235 dead transitions. [2024-10-11 14:10:30,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 235 transitions, 4711 flow [2024-10-11 14:10:30,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 14:10:30,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 14:10:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-10-11 14:10:30,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-10-11 14:10:30,081 INFO L175 Difference]: Start difference. First operand has 278 places, 217 transitions, 5432 flow. Second operand 8 states and 142 transitions. [2024-10-11 14:10:30,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 235 transitions, 4711 flow [2024-10-11 14:10:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 235 transitions, 3973 flow, removed 181 selfloop flow, removed 32 redundant places. [2024-10-11 14:10:30,520 INFO L231 Difference]: Finished difference. Result has 247 places, 0 transitions, 0 flow [2024-10-11 14:10:30,521 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} [2024-10-11 14:10:30,521 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 221 predicate places. [2024-10-11 14:10:30,521 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 0 transitions, 0 flow [2024-10-11 14:10:30,521 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) [2024-10-11 14:10:30,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-11 14:10:30,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-11 14:10:30,524 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-11 14:10:30,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-11 14:10:30,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-11 14:10:30,725 INFO L407 BasicCegarLoop]: Path program histogram: [14, 3, 2, 2, 1] [2024-10-11 14:10:30,728 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:10:30,728 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:10:30,733 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:10:30 BasicIcfg [2024-10-11 14:10:30,734 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:10:30,734 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:10:30,734 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:10:30,734 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:10:30,735 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:09:56" (3/4) ... [2024-10-11 14:10:30,737 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:10:30,740 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2024-10-11 14:10:30,741 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2024-10-11 14:10:30,744 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2024-10-11 14:10:30,745 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-10-11 14:10:30,745 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-10-11 14:10:30,745 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-11 14:10:30,828 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:10:30,828 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:10:30,829 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:10:30,829 INFO L158 Benchmark]: Toolchain (without parser) took 35526.26ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 108.4MB in the beginning and 487.7MB in the end (delta: -379.3MB). Peak memory consumption was 639.1MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,829 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:10:30,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 580.90ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 128.8MB in the end (delta: -20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.33ms. Allocated memory is still 167.8MB. Free memory was 128.0MB in the beginning and 126.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,830 INFO L158 Benchmark]: Boogie Preprocessor took 57.21ms. Allocated memory is still 167.8MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,831 INFO L158 Benchmark]: RCFGBuilder took 493.44ms. Allocated memory is still 167.8MB. Free memory was 124.5MB in the beginning and 106.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,831 INFO L158 Benchmark]: TraceAbstraction took 34245.87ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 105.7MB in the beginning and 491.9MB in the end (delta: -386.2MB). Peak memory consumption was 886.5MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,831 INFO L158 Benchmark]: Witness Printer took 94.59ms. Allocated memory is still 1.2GB. Free memory was 491.9MB in the beginning and 487.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:10:30,833 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 96.5MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 580.90ms. Allocated memory is still 167.8MB. Free memory was 107.9MB in the beginning and 128.8MB in the end (delta: -20.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.33ms. Allocated memory is still 167.8MB. Free memory was 128.0MB in the beginning and 126.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.21ms. Allocated memory is still 167.8MB. Free memory was 126.6MB in the beginning and 124.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.44ms. Allocated memory is still 167.8MB. Free memory was 124.5MB in the beginning and 106.4MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 34245.87ms. Allocated memory was 167.8MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 105.7MB in the beginning and 491.9MB in the end (delta: -386.2MB). Peak memory consumption was 886.5MB. Max. memory is 16.1GB. * Witness Printer took 94.59ms. Allocated memory is still 1.2GB. Free memory was 491.9MB in the beginning and 487.7MB in the end (delta: 4.2MB). 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: 34.1s, OverallIterations: 22, TraceHistogramMax: 6, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 22.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4919 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4888 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 3.9s 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, 4.9s 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, 0.4s SatisfiabilityAnalysisTime, 6.9s 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! [2024-10-11 14:10:30,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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