./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-100.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-100.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:57:07,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:57:07,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:57:07,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:57:07,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:57:07,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:57:07,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:57:07,752 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:57:07,753 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:57:07,754 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:57:07,754 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:57:07,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:57:07,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:57:07,755 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:57:07,755 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:57:07,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:57:07,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:57:07,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:57:07,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:57:07,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:57:07,757 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:57:07,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:57:07,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:57:07,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:57:07,758 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:57:07,759 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:57:07,759 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:57:07,759 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:57:07,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:57:07,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:57:07,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:57:07,760 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:57:07,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:57:07,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:57:07,761 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:57:07,761 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:57:07,761 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:57:07,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:57:07,761 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:57:07,762 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:57:07,762 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:57:07,762 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:57:07,762 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2024-11-22 13:57:07,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:57:08,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:57:08,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:57:08,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:57:08,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:57:08,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-22 13:57:09,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:57:09,422 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:57:09,425 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-22 13:57:09,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6b6e972/d139558437224c2297cf0f636eec0fa9/FLAG704cf7912 [2024-11-22 13:57:09,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f6b6e972/d139558437224c2297cf0f636eec0fa9 [2024-11-22 13:57:09,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:57:09,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:57:09,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:57:09,462 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:57:09,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:57:09,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e768b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09, skipping insertion in model container [2024-11-22 13:57:09,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,496 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:57:09,775 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2024-11-22 13:57:09,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:57:09,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:57:09,839 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2024-11-22 13:57:09,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:57:09,878 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:57:09,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09 WrapperNode [2024-11-22 13:57:09,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:57:09,880 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:57:09,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:57:09,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:57:09,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,913 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2024-11-22 13:57:09,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:57:09,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:57:09,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:57:09,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:57:09,924 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,935 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 13:57:09,935 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,944 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:57:09,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:57:09,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:57:09,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:57:09,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (1/1) ... [2024-11-22 13:57:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:57:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:09,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:57:09,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:57:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:57:10,025 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-22 13:57:10,026 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-22 13:57:10,026 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-22 13:57:10,027 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-22 13:57:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:57:10,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:57:10,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:57:10,029 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:57:10,147 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:57:10,149 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:57:10,241 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:57:10,241 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:57:10,310 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:57:10,311 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-22 13:57:10,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:57:10 BoogieIcfgContainer [2024-11-22 13:57:10,311 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:57:10,313 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:57:10,313 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:57:10,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:57:10,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:57:09" (1/3) ... [2024-11-22 13:57:10,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b6b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:57:10, skipping insertion in model container [2024-11-22 13:57:10,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:09" (2/3) ... [2024-11-22 13:57:10,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b6b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:57:10, skipping insertion in model container [2024-11-22 13:57:10,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:57:10" (3/3) ... [2024-11-22 13:57:10,319 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2024-11-22 13:57:10,332 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:57:10,332 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 13:57:10,333 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:57:10,378 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:57:10,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2024-11-22 13:57:10,427 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-22 13:57:10,427 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:57:10,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-22 13:57:10,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2024-11-22 13:57:10,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow [2024-11-22 13:57:10,438 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:57:10,444 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;@2853fe3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:57:10,444 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 13:57:10,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:57:10,449 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-11-22 13:57:10,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:57:10,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:10,450 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:10,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:10,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:10,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1841696643, now seen corresponding path program 1 times [2024-11-22 13:57:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:10,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569351616] [2024-11-22 13:57:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:10,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:10,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569351616] [2024-11-22 13:57:10,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569351616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:10,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:57:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:57:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553732434] [2024-11-22 13:57:10,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:10,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:57:10,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:10,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:10,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:10,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:10,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:11,064 INFO L124 PetriNetUnfolderBase]: 211/450 cut-off events. [2024-11-22 13:57:11,064 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 13:57:11,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 450 events. 211/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2194 event pairs, 26 based on Foata normal form. 48/420 useless extension candidates. Maximal degree in co-relation 780. Up to 153 conditions per place. [2024-11-22 13:57:11,069 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-11-22 13:57:11,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 63 transitions, 261 flow [2024-11-22 13:57:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:57:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:57:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-11-22 13:57:11,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2024-11-22 13:57:11,085 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 7 states and 122 transitions. [2024-11-22 13:57:11,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 63 transitions, 261 flow [2024-11-22 13:57:11,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 63 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 13:57:11,090 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 101 flow [2024-11-22 13:57:11,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2024-11-22 13:57:11,095 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-11-22 13:57:11,095 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 101 flow [2024-11-22 13:57:11,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:11,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:11,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:11,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:57:11,096 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:11,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1257990492, now seen corresponding path program 1 times [2024-11-22 13:57:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250404074] [2024-11-22 13:57:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:11,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250404074] [2024-11-22 13:57:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250404074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298922481] [2024-11-22 13:57:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:11,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:11,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:11,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:57:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:11,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:57:11,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:11,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298922481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:11,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 13:57:11,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953224547] [2024-11-22 13:57:11,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:11,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:57:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:57:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:57:11,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:11,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 101 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:11,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:11,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:11,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:11,752 INFO L124 PetriNetUnfolderBase]: 307/630 cut-off events. [2024-11-22 13:57:11,753 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-11-22 13:57:11,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 630 events. 307/630 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3138 event pairs, 26 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 1400. Up to 153 conditions per place. [2024-11-22 13:57:11,757 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 88 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2024-11-22 13:57:11,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 111 transitions, 533 flow [2024-11-22 13:57:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:57:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:57:11,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-11-22 13:57:11,760 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-22 13:57:11,760 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 101 flow. Second operand 13 states and 215 transitions. [2024-11-22 13:57:11,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 111 transitions, 533 flow [2024-11-22 13:57:11,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 519 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:57:11,766 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 212 flow [2024-11-22 13:57:11,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-22 13:57:11,767 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2024-11-22 13:57:11,767 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 212 flow [2024-11-22 13:57:11,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:11,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:11,768 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:11,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:57:11,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:11,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:11,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:11,970 INFO L85 PathProgramCache]: Analyzing trace with hash -592937479, now seen corresponding path program 1 times [2024-11-22 13:57:11,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:11,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323254394] [2024-11-22 13:57:11,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:11,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323254394] [2024-11-22 13:57:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323254394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:12,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:57:12,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:57:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358844540] [2024-11-22 13:57:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:12,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:12,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:57:12,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:12,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:12,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:12,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:12,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:12,232 INFO L124 PetriNetUnfolderBase]: 363/760 cut-off events. [2024-11-22 13:57:12,232 INFO L125 PetriNetUnfolderBase]: For 1257/1257 co-relation queries the response was YES. [2024-11-22 13:57:12,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 760 events. 363/760 cut-off events. For 1257/1257 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3936 event pairs, 86 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1460. Up to 245 conditions per place. [2024-11-22 13:57:12,237 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-22 13:57:12,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 662 flow [2024-11-22 13:57:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:57:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 13:57:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-11-22 13:57:12,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-22 13:57:12,241 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 212 flow. Second operand 7 states and 112 transitions. [2024-11-22 13:57:12,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 662 flow [2024-11-22 13:57:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 542 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-11-22 13:57:12,253 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 231 flow [2024-11-22 13:57:12,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-11-22 13:57:12,254 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-11-22 13:57:12,254 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 231 flow [2024-11-22 13:57:12,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:12,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:12,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:12,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:57:12,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:12,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1201223248, now seen corresponding path program 1 times [2024-11-22 13:57:12,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:12,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530552172] [2024-11-22 13:57:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:12,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530552172] [2024-11-22 13:57:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530552172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555688692] [2024-11-22 13:57:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:12,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:12,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:12,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:12,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:57:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:12,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:57:12,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:12,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:12,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555688692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:12,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:12,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 13:57:12,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186895945] [2024-11-22 13:57:12,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:12,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:57:12,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:12,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:57:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:57:12,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:12,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:12,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:12,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:12,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:12,773 INFO L124 PetriNetUnfolderBase]: 531/1054 cut-off events. [2024-11-22 13:57:12,773 INFO L125 PetriNetUnfolderBase]: For 1914/1914 co-relation queries the response was YES. [2024-11-22 13:57:12,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1054 events. 531/1054 cut-off events. For 1914/1914 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5598 event pairs, 93 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2981. Up to 245 conditions per place. [2024-11-22 13:57:12,780 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2024-11-22 13:57:12,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 1142 flow [2024-11-22 13:57:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:57:12,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:57:12,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2024-11-22 13:57:12,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5435897435897435 [2024-11-22 13:57:12,782 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 231 flow. Second operand 13 states and 212 transitions. [2024-11-22 13:57:12,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 1142 flow [2024-11-22 13:57:12,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 157 transitions, 1123 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-22 13:57:12,790 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 356 flow [2024-11-22 13:57:12,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-11-22 13:57:12,791 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-11-22 13:57:12,791 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 356 flow [2024-11-22 13:57:12,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:12,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:12,791 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:12,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 13:57:12,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-22 13:57:12,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:12,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1929875536, now seen corresponding path program 1 times [2024-11-22 13:57:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664918270] [2024-11-22 13:57:12,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:12,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:13,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:13,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664918270] [2024-11-22 13:57:13,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664918270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:13,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:57:13,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:57:13,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617460999] [2024-11-22 13:57:13,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:13,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:13,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:57:13,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:13,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:13,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:13,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:13,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:13,231 INFO L124 PetriNetUnfolderBase]: 555/1112 cut-off events. [2024-11-22 13:57:13,231 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2024-11-22 13:57:13,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1112 events. 555/1112 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6030 event pairs, 121 based on Foata normal form. 16/1066 useless extension candidates. Maximal degree in co-relation 3680. Up to 421 conditions per place. [2024-11-22 13:57:13,238 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 62 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-11-22 13:57:13,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 707 flow [2024-11-22 13:57:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:57:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:57:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-11-22 13:57:13,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-22 13:57:13,239 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 356 flow. Second operand 6 states and 93 transitions. [2024-11-22 13:57:13,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 707 flow [2024-11-22 13:57:13,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 629 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-22 13:57:13,252 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2024-11-22 13:57:13,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-22 13:57:13,253 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-11-22 13:57:13,254 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2024-11-22 13:57:13,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:13,255 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:13,255 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:13,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:57:13,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:13,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:13,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1782392078, now seen corresponding path program 1 times [2024-11-22 13:57:13,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:13,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238512673] [2024-11-22 13:57:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:13,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:13,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:13,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:13,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238512673] [2024-11-22 13:57:13,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238512673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:13,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:57:13,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:57:13,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958657114] [2024-11-22 13:57:13,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:13,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:13,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:13,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:57:13,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:13,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:13,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:13,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:13,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:13,472 INFO L124 PetriNetUnfolderBase]: 580/1166 cut-off events. [2024-11-22 13:57:13,473 INFO L125 PetriNetUnfolderBase]: For 4146/4146 co-relation queries the response was YES. [2024-11-22 13:57:13,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 1166 events. 580/1166 cut-off events. For 4146/4146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6432 event pairs, 117 based on Foata normal form. 17/1117 useless extension candidates. Maximal degree in co-relation 3784. Up to 457 conditions per place. [2024-11-22 13:57:13,480 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 67 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2024-11-22 13:57:13,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 705 flow [2024-11-22 13:57:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:57:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-22 13:57:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-11-22 13:57:13,481 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-11-22 13:57:13,481 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 6 states and 97 transitions. [2024-11-22 13:57:13,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 705 flow [2024-11-22 13:57:13,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 675 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-22 13:57:13,490 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 363 flow [2024-11-22 13:57:13,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-11-22 13:57:13,491 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-11-22 13:57:13,491 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 363 flow [2024-11-22 13:57:13,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:13,492 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:13,492 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:13,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:57:13,493 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:13,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1120256573, now seen corresponding path program 2 times [2024-11-22 13:57:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105252768] [2024-11-22 13:57:13,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:13,505 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:13,506 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:13,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:13,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105252768] [2024-11-22 13:57:13,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105252768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:13,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126175520] [2024-11-22 13:57:13,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:13,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:13,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 13:57:13,660 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:13,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:13,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:13,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:13,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:13,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126175520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:13,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:13,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-22 13:57:13,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895151159] [2024-11-22 13:57:13,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:13,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:57:13,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:13,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:57:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:57:13,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:13,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 363 flow. Second operand has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:13,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:13,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:13,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:14,441 INFO L124 PetriNetUnfolderBase]: 934/1778 cut-off events. [2024-11-22 13:57:14,441 INFO L125 PetriNetUnfolderBase]: For 14072/14072 co-relation queries the response was YES. [2024-11-22 13:57:14,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1778 events. 934/1778 cut-off events. For 14072/14072 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9531 event pairs, 93 based on Foata normal form. 240/1948 useless extension candidates. Maximal degree in co-relation 6346. Up to 351 conditions per place. [2024-11-22 13:57:14,451 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 270 selfloop transitions, 40 changer transitions 0/316 dead transitions. [2024-11-22 13:57:14,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 316 transitions, 2588 flow [2024-11-22 13:57:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:57:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 13:57:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 413 transitions. [2024-11-22 13:57:14,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506666666666666 [2024-11-22 13:57:14,452 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 363 flow. Second operand 25 states and 413 transitions. [2024-11-22 13:57:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 316 transitions, 2588 flow [2024-11-22 13:57:14,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 316 transitions, 2457 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-11-22 13:57:14,474 INFO L231 Difference]: Finished difference. Result has 106 places, 74 transitions, 650 flow [2024-11-22 13:57:14,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=650, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2024-11-22 13:57:14,475 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-11-22 13:57:14,475 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 650 flow [2024-11-22 13:57:14,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:14,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:14,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:14,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:14,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:14,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:14,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2033274663, now seen corresponding path program 1 times [2024-11-22 13:57:14,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:14,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017473610] [2024-11-22 13:57:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:14,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:14,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:14,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017473610] [2024-11-22 13:57:14,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017473610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:14,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639963390] [2024-11-22 13:57:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:14,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:14,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:14,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:14,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 13:57:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:14,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:57:14,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:14,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639963390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:14,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 13:57:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570046368] [2024-11-22 13:57:14,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:14,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:57:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:57:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:57:14,874 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:14,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:14,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:14,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:14,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:15,207 INFO L124 PetriNetUnfolderBase]: 1006/1922 cut-off events. [2024-11-22 13:57:15,208 INFO L125 PetriNetUnfolderBase]: For 22258/22258 co-relation queries the response was YES. [2024-11-22 13:57:15,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8322 conditions, 1922 events. 1006/1922 cut-off events. For 22258/22258 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10666 event pairs, 202 based on Foata normal form. 48/1892 useless extension candidates. Maximal degree in co-relation 6408. Up to 746 conditions per place. [2024-11-22 13:57:15,224 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 108 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2024-11-22 13:57:15,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 138 transitions, 1426 flow [2024-11-22 13:57:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:57:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:57:15,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-11-22 13:57:15,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2024-11-22 13:57:15,226 INFO L175 Difference]: Start difference. First operand has 106 places, 74 transitions, 650 flow. Second operand 9 states and 137 transitions. [2024-11-22 13:57:15,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 138 transitions, 1426 flow [2024-11-22 13:57:15,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1186 flow, removed 84 selfloop flow, removed 12 redundant places. [2024-11-22 13:57:15,265 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 574 flow [2024-11-22 13:57:15,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2024-11-22 13:57:15,265 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2024-11-22 13:57:15,265 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 574 flow [2024-11-22 13:57:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:15,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:15,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:15,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 13:57:15,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:15,467 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:15,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2114078429, now seen corresponding path program 1 times [2024-11-22 13:57:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:15,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129660761] [2024-11-22 13:57:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:15,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:15,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:15,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129660761] [2024-11-22 13:57:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129660761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668499674] [2024-11-22 13:57:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:57:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:15,535 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:15,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 13:57:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:57:15,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:57:15,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:15,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668499674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:15,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-22 13:57:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441483666] [2024-11-22 13:57:15,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:15,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:57:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:15,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:57:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:57:15,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:15,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:15,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:15,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:15,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:15,994 INFO L124 PetriNetUnfolderBase]: 1135/2126 cut-off events. [2024-11-22 13:57:15,995 INFO L125 PetriNetUnfolderBase]: For 19327/19327 co-relation queries the response was YES. [2024-11-22 13:57:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 2126 events. 1135/2126 cut-off events. For 19327/19327 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11826 event pairs, 114 based on Foata normal form. 87/2141 useless extension candidates. Maximal degree in co-relation 7974. Up to 819 conditions per place. [2024-11-22 13:57:16,009 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 136 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2024-11-22 13:57:16,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1535 flow [2024-11-22 13:57:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:57:16,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:57:16,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-11-22 13:57:16,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-22 13:57:16,011 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 574 flow. Second operand 9 states and 144 transitions. [2024-11-22 13:57:16,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1535 flow [2024-11-22 13:57:16,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1457 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-22 13:57:16,049 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 594 flow [2024-11-22 13:57:16,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2024-11-22 13:57:16,050 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-11-22 13:57:16,050 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 594 flow [2024-11-22 13:57:16,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:16,050 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:16,050 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:16,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:16,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:16,251 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:16,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash -4639815, now seen corresponding path program 2 times [2024-11-22 13:57:16,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:16,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142639636] [2024-11-22 13:57:16,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:16,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:16,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:16,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142639636] [2024-11-22 13:57:16,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142639636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:16,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419770520] [2024-11-22 13:57:16,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:16,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:16,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:16,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 13:57:16,368 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:16,369 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:16,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:16,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:16,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:16,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419770520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:16,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:16,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-22 13:57:16,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456978735] [2024-11-22 13:57:16,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:16,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:57:16,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:16,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:57:16,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:57:16,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:16,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 594 flow. Second operand has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:16,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:16,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:16,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:17,212 INFO L124 PetriNetUnfolderBase]: 1759/3257 cut-off events. [2024-11-22 13:57:17,212 INFO L125 PetriNetUnfolderBase]: For 55632/55632 co-relation queries the response was YES. [2024-11-22 13:57:17,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 3257 events. 1759/3257 cut-off events. For 55632/55632 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18823 event pairs, 279 based on Foata normal form. 420/3574 useless extension candidates. Maximal degree in co-relation 10848. Up to 697 conditions per place. [2024-11-22 13:57:17,285 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 441 selfloop transitions, 46 changer transitions 0/493 dead transitions. [2024-11-22 13:57:17,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 493 transitions, 4418 flow [2024-11-22 13:57:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:57:17,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 13:57:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 410 transitions. [2024-11-22 13:57:17,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-22 13:57:17,289 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 594 flow. Second operand 25 states and 410 transitions. [2024-11-22 13:57:17,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 493 transitions, 4418 flow [2024-11-22 13:57:17,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 493 transitions, 4308 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-22 13:57:17,362 INFO L231 Difference]: Finished difference. Result has 142 places, 98 transitions, 858 flow [2024-11-22 13:57:17,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=858, PETRI_PLACES=142, PETRI_TRANSITIONS=98} [2024-11-22 13:57:17,363 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-11-22 13:57:17,363 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 98 transitions, 858 flow [2024-11-22 13:57:17,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:17,364 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:17,364 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:17,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 13:57:17,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:17,565 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:17,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash 974032438, now seen corresponding path program 2 times [2024-11-22 13:57:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:17,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808486039] [2024-11-22 13:57:17,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:17,571 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:17,572 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:17,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:17,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808486039] [2024-11-22 13:57:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808486039] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583328530] [2024-11-22 13:57:17,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:17,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:17,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:17,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 13:57:17,749 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:17,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:17,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:17,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:17,818 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583328530] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:17,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-22 13:57:17,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539015610] [2024-11-22 13:57:17,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:17,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:57:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:57:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:57:17,922 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:17,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 98 transitions, 858 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:17,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:17,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:17,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:18,509 INFO L124 PetriNetUnfolderBase]: 2011/3641 cut-off events. [2024-11-22 13:57:18,509 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2024-11-22 13:57:18,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17399 conditions, 3641 events. 2011/3641 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21117 event pairs, 234 based on Foata normal form. 168/3718 useless extension candidates. Maximal degree in co-relation 16736. Up to 1406 conditions per place. [2024-11-22 13:57:18,536 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 36 changer transitions 0/279 dead transitions. [2024-11-22 13:57:18,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 279 transitions, 3392 flow [2024-11-22 13:57:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:57:18,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:57:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 224 transitions. [2024-11-22 13:57:18,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-11-22 13:57:18,539 INFO L175 Difference]: Start difference. First operand has 142 places, 98 transitions, 858 flow. Second operand 15 states and 224 transitions. [2024-11-22 13:57:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 279 transitions, 3392 flow [2024-11-22 13:57:18,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 2600 flow, removed 312 selfloop flow, removed 12 redundant places. [2024-11-22 13:57:18,730 INFO L231 Difference]: Finished difference. Result has 150 places, 104 transitions, 836 flow [2024-11-22 13:57:18,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=836, PETRI_PLACES=150, PETRI_TRANSITIONS=104} [2024-11-22 13:57:18,731 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-11-22 13:57:18,731 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 104 transitions, 836 flow [2024-11-22 13:57:18,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:18,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:18,731 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:18,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:18,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:18,936 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:18,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:18,936 INFO L85 PathProgramCache]: Analyzing trace with hash -708163506, now seen corresponding path program 2 times [2024-11-22 13:57:18,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296579638] [2024-11-22 13:57:18,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:18,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:18,944 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:18,946 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296579638] [2024-11-22 13:57:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296579638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:19,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665055172] [2024-11-22 13:57:19,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:57:19,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:19,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:19,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:19,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 13:57:19,078 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 13:57:19,078 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:19,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:19,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:19,137 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:19,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:19,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:19,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665055172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:19,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:19,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-22 13:57:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339598503] [2024-11-22 13:57:19,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:19,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 13:57:19,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:19,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 13:57:19,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-22 13:57:19,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:19,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 104 transitions, 836 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:19,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:19,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:19,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:20,000 INFO L124 PetriNetUnfolderBase]: 2269/4061 cut-off events. [2024-11-22 13:57:20,000 INFO L125 PetriNetUnfolderBase]: For 104823/104823 co-relation queries the response was YES. [2024-11-22 13:57:20,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 4061 events. 2269/4061 cut-off events. For 104823/104823 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23575 event pairs, 275 based on Foata normal form. 174/4150 useless extension candidates. Maximal degree in co-relation 17481. Up to 1821 conditions per place. [2024-11-22 13:57:20,032 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 256 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-11-22 13:57:20,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 298 transitions, 2985 flow [2024-11-22 13:57:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:57:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:57:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2024-11-22 13:57:20,034 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2024-11-22 13:57:20,034 INFO L175 Difference]: Start difference. First operand has 150 places, 104 transitions, 836 flow. Second operand 15 states and 237 transitions. [2024-11-22 13:57:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 298 transitions, 2985 flow [2024-11-22 13:57:20,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 298 transitions, 2845 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-11-22 13:57:20,197 INFO L231 Difference]: Finished difference. Result has 162 places, 110 transitions, 872 flow [2024-11-22 13:57:20,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=162, PETRI_TRANSITIONS=110} [2024-11-22 13:57:20,197 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-11-22 13:57:20,197 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 110 transitions, 872 flow [2024-11-22 13:57:20,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:20,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:20,198 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:20,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:20,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 13:57:20,399 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:20,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:20,399 INFO L85 PathProgramCache]: Analyzing trace with hash -667195613, now seen corresponding path program 3 times [2024-11-22 13:57:20,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:20,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062871270] [2024-11-22 13:57:20,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:20,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:57:20,406 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:57:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062871270] [2024-11-22 13:57:20,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062871270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110031555] [2024-11-22 13:57:20,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:20,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:20,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 13:57:20,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:57:20,555 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:20,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:20,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:20,587 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:57:20,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:57:20,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110031555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:20,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:57:20,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-22 13:57:20,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913712523] [2024-11-22 13:57:20,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:20,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:20,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:57:20,597 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-22 13:57:20,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 110 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:20,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:20,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-22 13:57:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:21,162 INFO L124 PetriNetUnfolderBase]: 2451/4403 cut-off events. [2024-11-22 13:57:21,162 INFO L125 PetriNetUnfolderBase]: For 98071/98071 co-relation queries the response was YES. [2024-11-22 13:57:21,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19694 conditions, 4403 events. 2451/4403 cut-off events. For 98071/98071 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25882 event pairs, 650 based on Foata normal form. 82/4432 useless extension candidates. Maximal degree in co-relation 19027. Up to 1557 conditions per place. [2024-11-22 13:57:21,241 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 210 selfloop transitions, 32 changer transitions 7/254 dead transitions. [2024-11-22 13:57:21,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 254 transitions, 2737 flow [2024-11-22 13:57:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:57:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:57:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-11-22 13:57:21,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-11-22 13:57:21,246 INFO L175 Difference]: Start difference. First operand has 162 places, 110 transitions, 872 flow. Second operand 9 states and 146 transitions. [2024-11-22 13:57:21,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 254 transitions, 2737 flow [2024-11-22 13:57:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 254 transitions, 2347 flow, removed 148 selfloop flow, removed 8 redundant places. [2024-11-22 13:57:21,412 INFO L231 Difference]: Finished difference. Result has 164 places, 116 transitions, 964 flow [2024-11-22 13:57:21,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=164, PETRI_TRANSITIONS=116} [2024-11-22 13:57:21,412 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-11-22 13:57:21,413 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 116 transitions, 964 flow [2024-11-22 13:57:21,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:21,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:21,413 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:21,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 13:57:21,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 13:57:21,618 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:21,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash 30253145, now seen corresponding path program 3 times [2024-11-22 13:57:21,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:21,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688068211] [2024-11-22 13:57:21,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:21,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:21,623 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:57:21,623 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:57:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688068211] [2024-11-22 13:57:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688068211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909004213] [2024-11-22 13:57:21,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:21,697 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:21,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 13:57:21,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:57:21,734 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:21,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 13:57:21,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-22 13:57:21,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:57:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909004213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:57:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:57:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-22 13:57:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326622124] [2024-11-22 13:57:21,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:57:21,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:57:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:21,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:57:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:57:21,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-11-22 13:57:21,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 116 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:21,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:21,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-11-22 13:57:21,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:22,357 INFO L124 PetriNetUnfolderBase]: 2581/4529 cut-off events. [2024-11-22 13:57:22,358 INFO L125 PetriNetUnfolderBase]: For 116665/116665 co-relation queries the response was YES. [2024-11-22 13:57:22,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20556 conditions, 4529 events. 2581/4529 cut-off events. For 116665/116665 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25975 event pairs, 680 based on Foata normal form. 89/4616 useless extension candidates. Maximal degree in co-relation 19916. Up to 1677 conditions per place. [2024-11-22 13:57:22,391 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 104 selfloop transitions, 7 changer transitions 145/261 dead transitions. [2024-11-22 13:57:22,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 261 transitions, 2776 flow [2024-11-22 13:57:22,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:57:22,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:57:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-11-22 13:57:22,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-22 13:57:22,393 INFO L175 Difference]: Start difference. First operand has 164 places, 116 transitions, 964 flow. Second operand 9 states and 143 transitions. [2024-11-22 13:57:22,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 261 transitions, 2776 flow [2024-11-22 13:57:22,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 261 transitions, 2322 flow, removed 220 selfloop flow, removed 2 redundant places. [2024-11-22 13:57:22,687 INFO L231 Difference]: Finished difference. Result has 174 places, 72 transitions, 519 flow [2024-11-22 13:57:22,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=174, PETRI_TRANSITIONS=72} [2024-11-22 13:57:22,688 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-11-22 13:57:22,688 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 72 transitions, 519 flow [2024-11-22 13:57:22,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:22,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:22,688 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:22,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-22 13:57:22,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-22 13:57:22,889 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:22,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash 271135504, now seen corresponding path program 3 times [2024-11-22 13:57:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:22,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077972242] [2024-11-22 13:57:22,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:22,902 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:57:22,902 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:23,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:23,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077972242] [2024-11-22 13:57:23,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077972242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:23,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910004170] [2024-11-22 13:57:23,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:23,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:23,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:23,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:23,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 13:57:23,116 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:57:23,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:23,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:57:23,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:23,265 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910004170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:23,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:23,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-22 13:57:23,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352475386] [2024-11-22 13:57:23,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:23,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 13:57:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 13:57:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 13:57:23,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 72 transitions, 519 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:23,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:23,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:23,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:24,228 INFO L124 PetriNetUnfolderBase]: 1771/3205 cut-off events. [2024-11-22 13:57:24,228 INFO L125 PetriNetUnfolderBase]: For 67122/67122 co-relation queries the response was YES. [2024-11-22 13:57:24,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 3205 events. 1771/3205 cut-off events. For 67122/67122 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16210 event pairs, 421 based on Foata normal form. 336/3541 useless extension candidates. Maximal degree in co-relation 14092. Up to 1020 conditions per place. [2024-11-22 13:57:24,252 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 385 selfloop transitions, 28 changer transitions 15/434 dead transitions. [2024-11-22 13:57:24,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 434 transitions, 4558 flow [2024-11-22 13:57:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 13:57:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 13:57:24,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 395 transitions. [2024-11-22 13:57:24,254 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-11-22 13:57:24,254 INFO L175 Difference]: Start difference. First operand has 174 places, 72 transitions, 519 flow. Second operand 27 states and 395 transitions. [2024-11-22 13:57:24,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 434 transitions, 4558 flow [2024-11-22 13:57:24,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 434 transitions, 3461 flow, removed 524 selfloop flow, removed 16 redundant places. [2024-11-22 13:57:24,307 INFO L231 Difference]: Finished difference. Result has 171 places, 84 transitions, 644 flow [2024-11-22 13:57:24,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=644, PETRI_PLACES=171, PETRI_TRANSITIONS=84} [2024-11-22 13:57:24,308 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-11-22 13:57:24,308 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 84 transitions, 644 flow [2024-11-22 13:57:24,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:24,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:24,309 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:24,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:24,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-22 13:57:24,509 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:24,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:24,510 INFO L85 PathProgramCache]: Analyzing trace with hash 230699310, now seen corresponding path program 3 times [2024-11-22 13:57:24,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:24,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694196388] [2024-11-22 13:57:24,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:24,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:24,522 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:57:24,522 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:24,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694196388] [2024-11-22 13:57:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694196388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38862693] [2024-11-22 13:57:24,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:57:24,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:24,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:24,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:24,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 13:57:24,733 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-22 13:57:24,733 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:24,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 13:57:24,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:24,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:25,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38862693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:25,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:25,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-22 13:57:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681862768] [2024-11-22 13:57:25,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:25,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 13:57:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 13:57:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 13:57:25,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:25,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 84 transitions, 644 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:25,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:25,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:25,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:26,108 INFO L124 PetriNetUnfolderBase]: 2287/4074 cut-off events. [2024-11-22 13:57:26,109 INFO L125 PetriNetUnfolderBase]: For 36013/36013 co-relation queries the response was YES. [2024-11-22 13:57:26,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17035 conditions, 4074 events. 2287/4074 cut-off events. For 36013/36013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 20954 event pairs, 693 based on Foata normal form. 348/4422 useless extension candidates. Maximal degree in co-relation 16965. Up to 1836 conditions per place. [2024-11-22 13:57:26,133 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 423 selfloop transitions, 28 changer transitions 14/471 dead transitions. [2024-11-22 13:57:26,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 471 transitions, 3778 flow [2024-11-22 13:57:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-22 13:57:26,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-22 13:57:26,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 420 transitions. [2024-11-22 13:57:26,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-22 13:57:26,134 INFO L175 Difference]: Start difference. First operand has 171 places, 84 transitions, 644 flow. Second operand 27 states and 420 transitions. [2024-11-22 13:57:26,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 471 transitions, 3778 flow [2024-11-22 13:57:26,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 471 transitions, 3618 flow, removed 61 selfloop flow, removed 14 redundant places. [2024-11-22 13:57:26,203 INFO L231 Difference]: Finished difference. Result has 195 places, 96 transitions, 716 flow [2024-11-22 13:57:26,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=716, PETRI_PLACES=195, PETRI_TRANSITIONS=96} [2024-11-22 13:57:26,204 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-11-22 13:57:26,204 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 96 transitions, 716 flow [2024-11-22 13:57:26,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:26,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:26,204 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:26,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:26,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-22 13:57:26,405 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:26,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash 870603000, now seen corresponding path program 4 times [2024-11-22 13:57:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830760005] [2024-11-22 13:57:26,405 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:57:26,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:26,415 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:57:26,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:26,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830760005] [2024-11-22 13:57:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830760005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:26,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878978634] [2024-11-22 13:57:26,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:57:26,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:26,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:26,810 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:26,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 13:57:26,855 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:57:26,855 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:26,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 13:57:26,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:27,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:27,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878978634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:27,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:27,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 76 [2024-11-22 13:57:27,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521789530] [2024-11-22 13:57:27,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:27,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-22 13:57:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:27,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-22 13:57:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=3605, Unknown=0, NotChecked=0, Total=5852 [2024-11-22 13:57:27,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:27,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 96 transitions, 716 flow. Second operand has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:27,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:27,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:27,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:29,834 INFO L124 PetriNetUnfolderBase]: 3295/5752 cut-off events. [2024-11-22 13:57:29,834 INFO L125 PetriNetUnfolderBase]: For 187620/187620 co-relation queries the response was YES. [2024-11-22 13:57:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23864 conditions, 5752 events. 3295/5752 cut-off events. For 187620/187620 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28332 event pairs, 745 based on Foata normal form. 672/6424 useless extension candidates. Maximal degree in co-relation 23782. Up to 1884 conditions per place. [2024-11-22 13:57:29,878 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 757 selfloop transitions, 52 changer transitions 15/830 dead transitions. [2024-11-22 13:57:29,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 830 transitions, 6813 flow [2024-11-22 13:57:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-22 13:57:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-22 13:57:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 743 transitions. [2024-11-22 13:57:29,880 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48562091503267973 [2024-11-22 13:57:29,880 INFO L175 Difference]: Start difference. First operand has 195 places, 96 transitions, 716 flow. Second operand 51 states and 743 transitions. [2024-11-22 13:57:29,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 830 transitions, 6813 flow [2024-11-22 13:57:29,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 830 transitions, 6653 flow, removed 61 selfloop flow, removed 14 redundant places. [2024-11-22 13:57:29,990 INFO L231 Difference]: Finished difference. Result has 255 places, 120 transitions, 1004 flow [2024-11-22 13:57:29,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1004, PETRI_PLACES=255, PETRI_TRANSITIONS=120} [2024-11-22 13:57:29,990 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-11-22 13:57:29,990 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 120 transitions, 1004 flow [2024-11-22 13:57:29,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:29,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:29,991 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:29,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 13:57:30,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 13:57:30,191 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:30,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:30,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2103640716, now seen corresponding path program 4 times [2024-11-22 13:57:30,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:30,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131220108] [2024-11-22 13:57:30,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:57:30,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:30,199 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:57:30,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131220108] [2024-11-22 13:57:30,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131220108] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:30,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508308013] [2024-11-22 13:57:30,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:57:30,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:30,609 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:30,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 13:57:30,651 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:57:30,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:30,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 13:57:30,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:30,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508308013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:31,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:31,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2024-11-22 13:57:31,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482804447] [2024-11-22 13:57:31,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:31,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-22 13:57:31,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-22 13:57:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2024-11-22 13:57:31,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:31,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 120 transitions, 1004 flow. Second operand has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:31,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:31,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:31,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:33,951 INFO L124 PetriNetUnfolderBase]: 4327/7482 cut-off events. [2024-11-22 13:57:33,951 INFO L125 PetriNetUnfolderBase]: For 219479/219479 co-relation queries the response was YES. [2024-11-22 13:57:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32071 conditions, 7482 events. 4327/7482 cut-off events. For 219479/219479 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 38131 event pairs, 1317 based on Foata normal form. 696/8178 useless extension candidates. Maximal degree in co-relation 31965. Up to 3516 conditions per place. [2024-11-22 13:57:34,019 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 831 selfloop transitions, 52 changer transitions 14/903 dead transitions. [2024-11-22 13:57:34,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 903 transitions, 7258 flow [2024-11-22 13:57:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-22 13:57:34,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-22 13:57:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 792 transitions. [2024-11-22 13:57:34,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2024-11-22 13:57:34,020 INFO L175 Difference]: Start difference. First operand has 255 places, 120 transitions, 1004 flow. Second operand 51 states and 792 transitions. [2024-11-22 13:57:34,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 903 transitions, 7258 flow [2024-11-22 13:57:34,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 903 transitions, 6954 flow, removed 121 selfloop flow, removed 26 redundant places. [2024-11-22 13:57:34,253 INFO L231 Difference]: Finished difference. Result has 303 places, 144 transitions, 1148 flow [2024-11-22 13:57:34,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1148, PETRI_PLACES=303, PETRI_TRANSITIONS=144} [2024-11-22 13:57:34,253 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 274 predicate places. [2024-11-22 13:57:34,253 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 144 transitions, 1148 flow [2024-11-22 13:57:34,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:34,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:34,254 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:34,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 13:57:34,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:34,454 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:34,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:34,455 INFO L85 PathProgramCache]: Analyzing trace with hash -401293448, now seen corresponding path program 5 times [2024-11-22 13:57:34,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:34,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55690729] [2024-11-22 13:57:34,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:57:34,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:34,472 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-22 13:57:34,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:35,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:35,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55690729] [2024-11-22 13:57:35,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55690729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:35,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310349422] [2024-11-22 13:57:35,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:57:35,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:35,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:35,834 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:35,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 13:57:35,890 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-22 13:57:35,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:35,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 13:57:35,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:36,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310349422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:39,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-22 13:57:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859929466] [2024-11-22 13:57:39,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:39,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-22 13:57:39,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-22 13:57:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2024-11-22 13:57:39,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:39,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 144 transitions, 1148 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:39,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:39,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:39,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:57:46,740 INFO L124 PetriNetUnfolderBase]: 6343/10840 cut-off events. [2024-11-22 13:57:46,740 INFO L125 PetriNetUnfolderBase]: For 1486186/1486186 co-relation queries the response was YES. [2024-11-22 13:57:46,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45728 conditions, 10840 events. 6343/10840 cut-off events. For 1486186/1486186 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 52553 event pairs, 1393 based on Foata normal form. 1344/12184 useless extension candidates. Maximal degree in co-relation 45598. Up to 3612 conditions per place. [2024-11-22 13:57:46,843 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1501 selfloop transitions, 100 changer transitions 15/1622 dead transitions. [2024-11-22 13:57:46,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1622 transitions, 13341 flow [2024-11-22 13:57:46,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-22 13:57:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-22 13:57:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1439 transitions. [2024-11-22 13:57:46,846 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4845117845117845 [2024-11-22 13:57:46,846 INFO L175 Difference]: Start difference. First operand has 303 places, 144 transitions, 1148 flow. Second operand 99 states and 1439 transitions. [2024-11-22 13:57:46,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1622 transitions, 13341 flow [2024-11-22 13:57:47,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1622 transitions, 13037 flow, removed 121 selfloop flow, removed 26 redundant places. [2024-11-22 13:57:47,440 INFO L231 Difference]: Finished difference. Result has 423 places, 192 transitions, 1724 flow [2024-11-22 13:57:47,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1724, PETRI_PLACES=423, PETRI_TRANSITIONS=192} [2024-11-22 13:57:47,440 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2024-11-22 13:57:47,440 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 192 transitions, 1724 flow [2024-11-22 13:57:47,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:47,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:57:47,441 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:57:47,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 13:57:47,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:47,642 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:57:47,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:57:47,642 INFO L85 PathProgramCache]: Analyzing trace with hash -407217140, now seen corresponding path program 5 times [2024-11-22 13:57:47,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:57:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867596975] [2024-11-22 13:57:47,642 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:57:47,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:57:47,673 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-22 13:57:47,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:48,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:57:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867596975] [2024-11-22 13:57:48,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867596975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:57:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963853895] [2024-11-22 13:57:48,809 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:57:48,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:57:48,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:48,810 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:57:48,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 13:57:48,864 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2024-11-22 13:57:48,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:57:48,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 13:57:48,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:57:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:49,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:57:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:57:52,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963853895] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:57:52,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:57:52,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-22 13:57:52,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232573903] [2024-11-22 13:57:52,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:57:52,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-22 13:57:52,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:57:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-22 13:57:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2024-11-22 13:57:52,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:57:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 192 transitions, 1724 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:57:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:57:52,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:57:52,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:58:01,371 INFO L124 PetriNetUnfolderBase]: 8407/14298 cut-off events. [2024-11-22 13:58:01,372 INFO L125 PetriNetUnfolderBase]: For 1637099/1637099 co-relation queries the response was YES. [2024-11-22 13:58:01,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62143 conditions, 14298 events. 8407/14298 cut-off events. For 1637099/1637099 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 72425 event pairs, 2565 based on Foata normal form. 1392/15690 useless extension candidates. Maximal degree in co-relation 61965. Up to 6876 conditions per place. [2024-11-22 13:58:01,533 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1647 selfloop transitions, 100 changer transitions 14/1767 dead transitions. [2024-11-22 13:58:01,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1767 transitions, 14218 flow [2024-11-22 13:58:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-22 13:58:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-22 13:58:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1536 transitions. [2024-11-22 13:58:01,536 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2024-11-22 13:58:01,536 INFO L175 Difference]: Start difference. First operand has 423 places, 192 transitions, 1724 flow. Second operand 99 states and 1536 transitions. [2024-11-22 13:58:01,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1767 transitions, 14218 flow [2024-11-22 13:58:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1767 transitions, 13626 flow, removed 241 selfloop flow, removed 50 redundant places. [2024-11-22 13:58:02,602 INFO L231 Difference]: Finished difference. Result has 519 places, 240 transitions, 2012 flow [2024-11-22 13:58:02,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2012, PETRI_PLACES=519, PETRI_TRANSITIONS=240} [2024-11-22 13:58:02,603 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 490 predicate places. [2024-11-22 13:58:02,603 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 240 transitions, 2012 flow [2024-11-22 13:58:02,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:58:02,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:58:02,604 INFO L204 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:58:02,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 13:58:02,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:02,804 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:58:02,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1888285576, now seen corresponding path program 6 times [2024-11-22 13:58:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155604647] [2024-11-22 13:58:02,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:58:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:02,838 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-22 13:58:02,838 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:58:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:06,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155604647] [2024-11-22 13:58:06,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155604647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:58:06,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783207151] [2024-11-22 13:58:06,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:58:06,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:58:06,348 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:58:06,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 13:58:06,430 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-22 13:58:06,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:58:06,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-22 13:58:06,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:58:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:09,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:58:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:12,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783207151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:58:12,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:58:12,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2024-11-22 13:58:12,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886875716] [2024-11-22 13:58:12,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:58:12,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2024-11-22 13:58:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2024-11-22 13:58:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2024-11-22 13:58:12,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:58:12,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 240 transitions, 2012 flow. Second operand has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:58:12,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:58:12,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:58:12,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:58:25,478 INFO L124 PetriNetUnfolderBase]: 8701/14786 cut-off events. [2024-11-22 13:58:25,479 INFO L125 PetriNetUnfolderBase]: For 1157486/1157486 co-relation queries the response was YES. [2024-11-22 13:58:25,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61866 conditions, 14786 events. 8701/14786 cut-off events. For 1157486/1157486 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 74736 event pairs, 2689 based on Foata normal form. 196/14982 useless extension candidates. Maximal degree in co-relation 61640. Up to 7068 conditions per place. [2024-11-22 13:58:25,683 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1654 selfloop transitions, 107 changer transitions 15/1782 dead transitions. [2024-11-22 13:58:25,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 1782 transitions, 14738 flow [2024-11-22 13:58:25,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-22 13:58:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2024-11-22 13:58:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1496 transitions. [2024-11-22 13:58:25,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47044025157232705 [2024-11-22 13:58:25,685 INFO L175 Difference]: Start difference. First operand has 519 places, 240 transitions, 2012 flow. Second operand 106 states and 1496 transitions. [2024-11-22 13:58:25,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 1782 transitions, 14738 flow [2024-11-22 13:58:27,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1782 transitions, 14146 flow, removed 241 selfloop flow, removed 50 redundant places. [2024-11-22 13:58:27,356 INFO L231 Difference]: Finished difference. Result has 581 places, 247 transitions, 1740 flow [2024-11-22 13:58:27,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=1740, PETRI_PLACES=581, PETRI_TRANSITIONS=247} [2024-11-22 13:58:27,357 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2024-11-22 13:58:27,357 INFO L471 AbstractCegarLoop]: Abstraction has has 581 places, 247 transitions, 1740 flow [2024-11-22 13:58:27,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:58:27,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:58:27,358 INFO L204 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:58:27,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-22 13:58:27,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:27,558 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-22 13:58:27,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:27,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1146384628, now seen corresponding path program 6 times [2024-11-22 13:58:27,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550001280] [2024-11-22 13:58:27,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:58:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:27,591 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-22 13:58:27,591 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:58:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550001280] [2024-11-22 13:58:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550001280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:58:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630709777] [2024-11-22 13:58:31,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:58:31,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:31,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:58:31,036 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:58:31,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 13:58:31,118 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2024-11-22 13:58:31,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:58:31,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-22 13:58:31,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:58:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:34,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 13:58:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:58:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630709777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 13:58:37,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 13:58:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 202 [2024-11-22 13:58:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407521661] [2024-11-22 13:58:37,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 13:58:37,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 203 states [2024-11-22 13:58:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2024-11-22 13:58:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14950, Invalid=26056, Unknown=0, NotChecked=0, Total=41006 [2024-11-22 13:58:37,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-11-22 13:58:37,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 247 transitions, 1740 flow. Second operand has 203 states, 203 states have (on average 9.05911330049261) internal successors, (1839), 203 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:58:37,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:58:37,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-11-22 13:58:37,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand