./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 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:39:55,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:39:55,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:39:55,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:39:55,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:39:55,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:39:55,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:39:55,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:39:55,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:39:55,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:39:55,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:39:55,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:39:55,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:39:55,883 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:39:55,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:39:55,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:39:55,886 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:39:55,886 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:39:55,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:39:55,887 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:39:55,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:39:55,888 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:39:55,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:39:55,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:39:55,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:39:55,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:39:55,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:39:55,890 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:39:55,890 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:39:55,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:39:55,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:39:55,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:39:55,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:39:55,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:39:55,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:39:55,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:39:55,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:39:55,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:39:55,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:39:55,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:39:55,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:39:55,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:39:55,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7857262d4d8d027aa598d94064d6edf426fece06c8ec09601338aa41711d7f37 [2024-11-10 10:39:56,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:39:56,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:39:56,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:39:56,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:39:56,163 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:39:56,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-10 10:39:57,604 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:39:57,865 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:39:57,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2024-11-10 10:39:57,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bc2a449/673e7ab9c8284a78821ec598f12c1c3d/FLAGd5487a2e5 [2024-11-10 10:39:57,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4bc2a449/673e7ab9c8284a78821ec598f12c1c3d [2024-11-10 10:39:57,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:39:57,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:39:57,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:39:57,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:39:57,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:39:57,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:39:57" (1/1) ... [2024-11-10 10:39:57,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12580b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:57, skipping insertion in model container [2024-11-10 10:39:57,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:39:57" (1/1) ... [2024-11-10 10:39:57,966 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:39:58,328 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] [2024-11-10 10:39:58,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:39:58,358 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:39:58,397 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] [2024-11-10 10:39:58,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:39:58,435 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:39:58,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58 WrapperNode [2024-11-10 10:39:58,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:39:58,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:39:58,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:39:58,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:39:58,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,475 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2024-11-10 10:39:58,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:39:58,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:39:58,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:39:58,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:39:58,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,509 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]. [2024-11-10 10:39:58,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,515 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:39:58,524 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:39:58,524 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:39:58,524 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:39:58,525 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (1/1) ... [2024-11-10 10:39:58,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:39:58,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:39:58,556 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) [2024-11-10 10:39:58,559 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 [2024-11-10 10:39:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:39:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-10 10:39:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-10 10:39:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-10 10:39:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-10 10:39:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:39:58,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:39:58,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:39:58,600 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:39:58,721 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:39:58,722 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:39:58,872 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:39:58,872 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:39:58,964 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:39:58,964 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:39:58,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:39:58 BoogieIcfgContainer [2024-11-10 10:39:58,965 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:39:58,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:39:58,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:39:58,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:39:58,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:39:57" (1/3) ... [2024-11-10 10:39:58,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:39:58, skipping insertion in model container [2024-11-10 10:39:58,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:39:58" (2/3) ... [2024-11-10 10:39:58,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:39:58, skipping insertion in model container [2024-11-10 10:39:58,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:39:58" (3/3) ... [2024-11-10 10:39:58,974 INFO L112 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2024-11-10 10:39:58,991 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:39:58,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 10:39:58,991 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:39:59,036 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:39:59,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 36 transitions, 86 flow [2024-11-10 10:39:59,115 INFO L124 PetriNetUnfolderBase]: 6/34 cut-off events. [2024-11-10 10:39:59,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:39:59,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 6/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-11-10 10:39:59,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 36 transitions, 86 flow [2024-11-10 10:39:59,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 32 transitions, 73 flow [2024-11-10 10:39:59,141 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:39:59,150 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;@2fe04864, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:39:59,151 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:39:59,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:39:59,166 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2024-11-10 10:39:59,166 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:39:59,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:39:59,167 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:39:59,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:39:59,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:39:59,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1444112866, now seen corresponding path program 1 times [2024-11-10 10:39:59,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:39:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785877878] [2024-11-10 10:39:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:39:59,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:39:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:39:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:39:59,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:39:59,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785877878] [2024-11-10 10:39:59,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785877878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:39:59,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:39:59,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:39:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795266892] [2024-11-10 10:39:59,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:39:59,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:39:59,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:39:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:39:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:39:59,541 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-11-10 10:39:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 73 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:39:59,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:39:59,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-11-10 10:39:59,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:39:59,665 INFO L124 PetriNetUnfolderBase]: 169/362 cut-off events. [2024-11-10 10:39:59,665 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-10 10:39:59,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 362 events. 169/362 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1535 event pairs, 138 based on Foata normal form. 62/411 useless extension candidates. Maximal degree in co-relation 633. Up to 290 conditions per place. [2024-11-10 10:39:59,673 INFO L140 encePairwiseOnDemand]: 32/36 looper letters, 20 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-10 10:39:59,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 105 flow [2024-11-10 10:39:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:39:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:39:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2024-11-10 10:39:59,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-10 10:39:59,688 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 73 flow. Second operand 2 states and 44 transitions. [2024-11-10 10:39:59,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 105 flow [2024-11-10 10:39:59,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:39:59,694 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 60 flow [2024-11-10 10:39:59,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2024-11-10 10:39:59,701 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2024-11-10 10:39:59,702 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 60 flow [2024-11-10 10:39:59,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:39:59,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:39:59,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:39:59,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:39:59,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:39:59,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:39:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1818810769, now seen corresponding path program 1 times [2024-11-10 10:39:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:39:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107720651] [2024-11-10 10:39:59,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:39:59,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:39:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:39:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:39:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:39:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107720651] [2024-11-10 10:39:59,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107720651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:39:59,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:39:59,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:39:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245345539] [2024-11-10 10:39:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:39:59,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:39:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:39:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:39:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:39:59,921 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:39:59,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 60 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:39:59,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:39:59,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:39:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:00,226 INFO L124 PetriNetUnfolderBase]: 325/682 cut-off events. [2024-11-10 10:40:00,227 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:40:00,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 682 events. 325/682 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3503 event pairs, 83 based on Foata normal form. 0/650 useless extension candidates. Maximal degree in co-relation 1253. Up to 251 conditions per place. [2024-11-10 10:40:00,236 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 58 selfloop transitions, 8 changer transitions 0/73 dead transitions. [2024-11-10 10:40:00,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 73 transitions, 289 flow [2024-11-10 10:40:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:40:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:40:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-11-10 10:40:00,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-11-10 10:40:00,239 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 60 flow. Second operand 7 states and 131 transitions. [2024-11-10 10:40:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 73 transitions, 289 flow [2024-11-10 10:40:00,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 73 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:40:00,242 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 109 flow [2024-11-10 10:40:00,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=109, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-11-10 10:40:00,243 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-11-10 10:40:00,243 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 109 flow [2024-11-10 10:40:00,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:00,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:00,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:00,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:40:00,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:00,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:00,245 INFO L85 PathProgramCache]: Analyzing trace with hash 199358988, now seen corresponding path program 1 times [2024-11-10 10:40:00,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:00,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356662300] [2024-11-10 10:40:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:00,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:00,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:00,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356662300] [2024-11-10 10:40:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356662300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:00,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320026521] [2024-11-10 10:40:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:00,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:00,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:00,478 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) [2024-11-10 10:40:00,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:40:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:00,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:40:00,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:00,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:00,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320026521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:00,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:00,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:40:00,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490301709] [2024-11-10 10:40:00,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:00,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:40:00,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:40:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:40:00,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:00,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 109 flow. Second operand has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:00,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:00,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:00,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:01,267 INFO L124 PetriNetUnfolderBase]: 439/942 cut-off events. [2024-11-10 10:40:01,267 INFO L125 PetriNetUnfolderBase]: For 437/437 co-relation queries the response was YES. [2024-11-10 10:40:01,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2155 conditions, 942 events. 439/942 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5185 event pairs, 50 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 2148. Up to 251 conditions per place. [2024-11-10 10:40:01,276 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 103 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-11-10 10:40:01,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 127 transitions, 595 flow [2024-11-10 10:40:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:40:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:40:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-11-10 10:40:01,279 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2024-11-10 10:40:01,279 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 109 flow. Second operand 13 states and 243 transitions. [2024-11-10 10:40:01,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 127 transitions, 595 flow [2024-11-10 10:40:01,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 127 transitions, 585 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:40:01,287 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 224 flow [2024-11-10 10:40:01,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=224, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-10 10:40:01,289 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2024-11-10 10:40:01,289 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 224 flow [2024-11-10 10:40:01,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.357142857142858) internal successors, (145), 14 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:01,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:01,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:01,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:40:01,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:01,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:01,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1947096694, now seen corresponding path program 1 times [2024-11-10 10:40:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:01,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235539323] [2024-11-10 10:40:01,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:01,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235539323] [2024-11-10 10:40:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235539323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:40:01,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:40:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:40:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339002517] [2024-11-10 10:40:01,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:40:01,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:40:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:40:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:40:01,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:01,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 224 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:01,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:01,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:01,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:01,907 INFO L124 PetriNetUnfolderBase]: 525/1108 cut-off events. [2024-11-10 10:40:01,908 INFO L125 PetriNetUnfolderBase]: For 1988/2024 co-relation queries the response was YES. [2024-11-10 10:40:01,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1108 events. 525/1108 cut-off events. For 1988/2024 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6301 event pairs, 145 based on Foata normal form. 0/1058 useless extension candidates. Maximal degree in co-relation 2918. Up to 370 conditions per place. [2024-11-10 10:40:01,916 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 75 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2024-11-10 10:40:01,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 646 flow [2024-11-10 10:40:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:40:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:40:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-11-10 10:40:01,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-11-10 10:40:01,921 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 224 flow. Second operand 7 states and 128 transitions. [2024-11-10 10:40:01,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 646 flow [2024-11-10 10:40:01,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 95 transitions, 556 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-11-10 10:40:01,936 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 255 flow [2024-11-10 10:40:01,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-11-10 10:40:01,938 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 26 predicate places. [2024-11-10 10:40:01,939 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 255 flow [2024-11-10 10:40:01,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:01,939 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:01,939 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:01,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:40:01,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:01,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1953134753, now seen corresponding path program 1 times [2024-11-10 10:40:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:01,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509105478] [2024-11-10 10:40:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:01,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:02,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:02,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:02,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509105478] [2024-11-10 10:40:02,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509105478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:40:02,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:40:02,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:40:02,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671293899] [2024-11-10 10:40:02,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:40:02,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:40:02,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:02,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:40:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:40:02,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:02,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:02,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:02,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:02,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:02,271 INFO L124 PetriNetUnfolderBase]: 525/1131 cut-off events. [2024-11-10 10:40:02,271 INFO L125 PetriNetUnfolderBase]: For 2677/2725 co-relation queries the response was YES. [2024-11-10 10:40:02,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3216 conditions, 1131 events. 525/1131 cut-off events. For 2677/2725 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6530 event pairs, 164 based on Foata normal form. 12/1135 useless extension candidates. Maximal degree in co-relation 3200. Up to 386 conditions per place. [2024-11-10 10:40:02,280 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 62 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-11-10 10:40:02,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 560 flow [2024-11-10 10:40:02,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:40:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:40:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-10 10:40:02,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:40:02,282 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 255 flow. Second operand 6 states and 108 transitions. [2024-11-10 10:40:02,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 560 flow [2024-11-10 10:40:02,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:40:02,312 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 281 flow [2024-11-10 10:40:02,314 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-11-10 10:40:02,314 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 29 predicate places. [2024-11-10 10:40:02,315 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 281 flow [2024-11-10 10:40:02,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:02,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:02,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:02,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:40:02,317 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:02,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1739095161, now seen corresponding path program 1 times [2024-11-10 10:40:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:02,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394610252] [2024-11-10 10:40:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:02,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394610252] [2024-11-10 10:40:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394610252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:40:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:40:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:40:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326001671] [2024-11-10 10:40:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:40:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:40:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:40:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:40:02,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:02,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:02,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:02,635 INFO L124 PetriNetUnfolderBase]: 574/1259 cut-off events. [2024-11-10 10:40:02,636 INFO L125 PetriNetUnfolderBase]: For 2469/2485 co-relation queries the response was YES. [2024-11-10 10:40:02,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 1259 events. 574/1259 cut-off events. For 2469/2485 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7536 event pairs, 74 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 3612. Up to 460 conditions per place. [2024-11-10 10:40:02,647 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 67 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-11-10 10:40:02,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 585 flow [2024-11-10 10:40:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:40:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:40:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-11-10 10:40:02,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-10 10:40:02,649 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 281 flow. Second operand 6 states and 112 transitions. [2024-11-10 10:40:02,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 585 flow [2024-11-10 10:40:02,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 560 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-10 10:40:02,660 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 297 flow [2024-11-10 10:40:02,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-11-10 10:40:02,661 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2024-11-10 10:40:02,661 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 297 flow [2024-11-10 10:40:02,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:02,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:02,662 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:02,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:40:02,662 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:02,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:02,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1420999181, now seen corresponding path program 1 times [2024-11-10 10:40:02,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:02,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729752728] [2024-11-10 10:40:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:02,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729752728] [2024-11-10 10:40:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729752728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807669453] [2024-11-10 10:40:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:02,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:02,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:02,751 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) [2024-11-10 10:40:02,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:40:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:02,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:40:02,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:02,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807669453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:02,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:40:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082553910] [2024-11-10 10:40:02,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:02,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:40:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:40:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:40:02,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:02,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 297 flow. Second operand has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:02,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:02,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:02,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:03,387 INFO L124 PetriNetUnfolderBase]: 769/1681 cut-off events. [2024-11-10 10:40:03,387 INFO L125 PetriNetUnfolderBase]: For 3512/3600 co-relation queries the response was YES. [2024-11-10 10:40:03,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4949 conditions, 1681 events. 769/1681 cut-off events. For 3512/3600 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10779 event pairs, 187 based on Foata normal form. 0/1623 useless extension candidates. Maximal degree in co-relation 4931. Up to 417 conditions per place. [2024-11-10 10:40:03,400 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 150 selfloop transitions, 22 changer transitions 0/179 dead transitions. [2024-11-10 10:40:03,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 179 transitions, 1254 flow [2024-11-10 10:40:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-10 10:40:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-10 10:40:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 240 transitions. [2024-11-10 10:40:03,402 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2024-11-10 10:40:03,402 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 297 flow. Second operand 13 states and 240 transitions. [2024-11-10 10:40:03,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 179 transitions, 1254 flow [2024-11-10 10:40:03,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 179 transitions, 1220 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-10 10:40:03,412 INFO L231 Difference]: Finished difference. Result has 80 places, 60 transitions, 440 flow [2024-11-10 10:40:03,413 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=440, PETRI_PLACES=80, PETRI_TRANSITIONS=60} [2024-11-10 10:40:03,413 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-11-10 10:40:03,413 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 60 transitions, 440 flow [2024-11-10 10:40:03,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.642857142857142) internal successors, (149), 14 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:03,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:03,414 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:03,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:40:03,614 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,SelfDestructingSolverStorable6 [2024-11-10 10:40:03,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:03,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:03,615 INFO L85 PathProgramCache]: Analyzing trace with hash -996538086, now seen corresponding path program 1 times [2024-11-10 10:40:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925882779] [2024-11-10 10:40:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925882779] [2024-11-10 10:40:03,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925882779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:03,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030618335] [2024-11-10 10:40:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:03,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:03,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:03,708 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) [2024-11-10 10:40:03,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:40:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:03,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:40:03,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:03,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:03,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030618335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:03,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:03,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:40:03,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169721996] [2024-11-10 10:40:03,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:03,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:40:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:03,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:40:03,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:40:03,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:03,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 60 transitions, 440 flow. Second operand has 14 states, 14 states have (on average 10.928571428571429) internal successors, (153), 14 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:03,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:03,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:03,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:04,322 INFO L124 PetriNetUnfolderBase]: 850/1899 cut-off events. [2024-11-10 10:40:04,323 INFO L125 PetriNetUnfolderBase]: For 11050/11105 co-relation queries the response was YES. [2024-11-10 10:40:04,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6565 conditions, 1899 events. 850/1899 cut-off events. For 11050/11105 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 12438 event pairs, 185 based on Foata normal form. 54/1945 useless extension candidates. Maximal degree in co-relation 6541. Up to 600 conditions per place. [2024-11-10 10:40:04,339 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 18 changer transitions 0/127 dead transitions. [2024-11-10 10:40:04,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1112 flow [2024-11-10 10:40:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:40:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:40:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-11-10 10:40:04,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-11-10 10:40:04,341 INFO L175 Difference]: Start difference. First operand has 80 places, 60 transitions, 440 flow. Second operand 9 states and 158 transitions. [2024-11-10 10:40:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1112 flow [2024-11-10 10:40:04,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 968 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-11-10 10:40:04,362 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 464 flow [2024-11-10 10:40:04,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=464, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2024-11-10 10:40:04,363 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-11-10 10:40:04,363 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 464 flow [2024-11-10 10:40:04,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.928571428571429) internal successors, (153), 14 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:04,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:04,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:04,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:40:04,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:04,564 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:04,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash -503352636, now seen corresponding path program 1 times [2024-11-10 10:40:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074545421] [2024-11-10 10:40:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:04,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074545421] [2024-11-10 10:40:04,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074545421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:04,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572283959] [2024-11-10 10:40:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:04,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:04,638 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) [2024-11-10 10:40:04,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:40:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:04,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:40:04,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:04,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:04,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572283959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:04,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:04,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:40:04,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798991365] [2024-11-10 10:40:04,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:04,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:40:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:04,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:40:04,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:40:04,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:04,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 464 flow. Second operand has 14 states, 14 states have (on average 10.928571428571429) internal successors, (153), 14 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:04,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:04,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:04,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:05,266 INFO L124 PetriNetUnfolderBase]: 943/2097 cut-off events. [2024-11-10 10:40:05,267 INFO L125 PetriNetUnfolderBase]: For 11014/11126 co-relation queries the response was YES. [2024-11-10 10:40:05,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 2097 events. 943/2097 cut-off events. For 11014/11126 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 13993 event pairs, 134 based on Foata normal form. 61/2158 useless extension candidates. Maximal degree in co-relation 6831. Up to 753 conditions per place. [2024-11-10 10:40:05,284 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 112 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-10 10:40:05,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1089 flow [2024-11-10 10:40:05,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:40:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:40:05,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-11-10 10:40:05,286 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-11-10 10:40:05,286 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 464 flow. Second operand 9 states and 165 transitions. [2024-11-10 10:40:05,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1089 flow [2024-11-10 10:40:05,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 137 transitions, 1029 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-10 10:40:05,308 INFO L231 Difference]: Finished difference. Result has 92 places, 66 transitions, 490 flow [2024-11-10 10:40:05,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=490, PETRI_PLACES=92, PETRI_TRANSITIONS=66} [2024-11-10 10:40:05,309 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-11-10 10:40:05,309 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 66 transitions, 490 flow [2024-11-10 10:40:05,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.928571428571429) internal successors, (153), 14 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:05,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:05,310 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:05,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-10 10:40:05,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:05,514 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:05,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:05,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1390870883, now seen corresponding path program 2 times [2024-11-10 10:40:05,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:05,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776419103] [2024-11-10 10:40:05,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:05,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:05,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:05,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776419103] [2024-11-10 10:40:05,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776419103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:05,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646603393] [2024-11-10 10:40:05,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:40:05,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:05,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:05,615 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) [2024-11-10 10:40:05,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:40:05,664 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:40:05,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:05,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:05,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:05,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646603393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:05,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-10 10:40:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013568007] [2024-11-10 10:40:05,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:05,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:40:05,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:05,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:40:05,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:40:05,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:05,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 66 transitions, 490 flow. Second operand has 23 states, 23 states have (on average 10.217391304347826) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:05,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:05,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:06,973 INFO L124 PetriNetUnfolderBase]: 1387/3108 cut-off events. [2024-11-10 10:40:06,973 INFO L125 PetriNetUnfolderBase]: For 38280/38522 co-relation queries the response was YES. [2024-11-10 10:40:06,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10564 conditions, 3108 events. 1387/3108 cut-off events. For 38280/38522 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21697 event pairs, 211 based on Foata normal form. 310/3412 useless extension candidates. Maximal degree in co-relation 10534. Up to 672 conditions per place. [2024-11-10 10:40:06,999 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 333 selfloop transitions, 40 changer transitions 0/380 dead transitions. [2024-11-10 10:40:06,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 380 transitions, 3107 flow [2024-11-10 10:40:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:40:07,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:40:07,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 465 transitions. [2024-11-10 10:40:07,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-11-10 10:40:07,002 INFO L175 Difference]: Start difference. First operand has 92 places, 66 transitions, 490 flow. Second operand 25 states and 465 transitions. [2024-11-10 10:40:07,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 380 transitions, 3107 flow [2024-11-10 10:40:07,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 380 transitions, 2761 flow, removed 132 selfloop flow, removed 5 redundant places. [2024-11-10 10:40:07,042 INFO L231 Difference]: Finished difference. Result has 123 places, 84 transitions, 760 flow [2024-11-10 10:40:07,043 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=760, PETRI_PLACES=123, PETRI_TRANSITIONS=84} [2024-11-10 10:40:07,044 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 90 predicate places. [2024-11-10 10:40:07,044 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 84 transitions, 760 flow [2024-11-10 10:40:07,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.217391304347826) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:07,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:07,045 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:07,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 10:40:07,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:40:07,246 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:07,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1139158806, now seen corresponding path program 2 times [2024-11-10 10:40:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:07,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613337539] [2024-11-10 10:40:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:07,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:07,382 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:07,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:07,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613337539] [2024-11-10 10:40:07,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613337539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:07,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163125811] [2024-11-10 10:40:07,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:40:07,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:07,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:07,386 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) [2024-11-10 10:40:07,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:40:07,443 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:40:07,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:07,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:07,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:07,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:07,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163125811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:07,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:07,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-10 10:40:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397416757] [2024-11-10 10:40:07,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:07,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:40:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:07,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:40:07,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:40:07,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:07,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 84 transitions, 760 flow. Second operand has 23 states, 23 states have (on average 10.391304347826088) internal successors, (239), 23 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:07,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:07,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:07,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:08,948 INFO L124 PetriNetUnfolderBase]: 2083/4686 cut-off events. [2024-11-10 10:40:08,948 INFO L125 PetriNetUnfolderBase]: For 65518/65708 co-relation queries the response was YES. [2024-11-10 10:40:08,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17688 conditions, 4686 events. 2083/4686 cut-off events. For 65518/65708 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 35450 event pairs, 379 based on Foata normal form. 444/5124 useless extension candidates. Maximal degree in co-relation 17646. Up to 1064 conditions per place. [2024-11-10 10:40:08,992 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 468 selfloop transitions, 46 changer transitions 0/521 dead transitions. [2024-11-10 10:40:08,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 521 transitions, 5370 flow [2024-11-10 10:40:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-10 10:40:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-10 10:40:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 462 transitions. [2024-11-10 10:40:08,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5133333333333333 [2024-11-10 10:40:08,995 INFO L175 Difference]: Start difference. First operand has 123 places, 84 transitions, 760 flow. Second operand 25 states and 462 transitions. [2024-11-10 10:40:08,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 521 transitions, 5370 flow [2024-11-10 10:40:09,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 521 transitions, 3948 flow, removed 569 selfloop flow, removed 12 redundant places. [2024-11-10 10:40:09,141 INFO L231 Difference]: Finished difference. Result has 147 places, 102 transitions, 952 flow [2024-11-10 10:40:09,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=952, PETRI_PLACES=147, PETRI_TRANSITIONS=102} [2024-11-10 10:40:09,142 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 114 predicate places. [2024-11-10 10:40:09,142 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 102 transitions, 952 flow [2024-11-10 10:40:09,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.391304347826088) internal successors, (239), 23 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:09,144 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:09,144 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:09,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 10:40:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:09,345 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:09,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1851391595, now seen corresponding path program 2 times [2024-11-10 10:40:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125796566] [2024-11-10 10:40:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:09,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125796566] [2024-11-10 10:40:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125796566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71784116] [2024-11-10 10:40:09,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:40:09,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:09,482 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) [2024-11-10 10:40:09,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:40:09,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:40:09,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:09,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:09,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:09,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71784116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:09,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-10 10:40:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050373732] [2024-11-10 10:40:09,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:09,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:40:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:40:09,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:40:09,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 102 transitions, 952 flow. Second operand has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:09,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:10,803 INFO L124 PetriNetUnfolderBase]: 2353/5367 cut-off events. [2024-11-10 10:40:10,803 INFO L125 PetriNetUnfolderBase]: For 117107/117222 co-relation queries the response was YES. [2024-11-10 10:40:10,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21687 conditions, 5367 events. 2353/5367 cut-off events. For 117107/117222 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 41508 event pairs, 578 based on Foata normal form. 180/5533 useless extension candidates. Maximal degree in co-relation 21633. Up to 1680 conditions per place. [2024-11-10 10:40:10,856 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 255 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-11-10 10:40:10,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 298 transitions, 3264 flow [2024-11-10 10:40:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:40:10,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:40:10,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 257 transitions. [2024-11-10 10:40:10,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759259259259259 [2024-11-10 10:40:10,858 INFO L175 Difference]: Start difference. First operand has 147 places, 102 transitions, 952 flow. Second operand 15 states and 257 transitions. [2024-11-10 10:40:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 298 transitions, 3264 flow [2024-11-10 10:40:11,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 298 transitions, 2484 flow, removed 306 selfloop flow, removed 12 redundant places. [2024-11-10 10:40:11,106 INFO L231 Difference]: Finished difference. Result has 155 places, 108 transitions, 942 flow [2024-11-10 10:40:11,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=942, PETRI_PLACES=155, PETRI_TRANSITIONS=108} [2024-11-10 10:40:11,107 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 122 predicate places. [2024-11-10 10:40:11,107 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 108 transitions, 942 flow [2024-11-10 10:40:11,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:11,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:11,108 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:11,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:11,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:11,309 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:11,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1735482619, now seen corresponding path program 2 times [2024-11-10 10:40:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:11,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528376046] [2024-11-10 10:40:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528376046] [2024-11-10 10:40:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528376046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531779452] [2024-11-10 10:40:11,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:40:11,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:11,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:11,461 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) [2024-11-10 10:40:11,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:40:11,525 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:40:11,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:11,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:11,528 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:11,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:11,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531779452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:11,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:11,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2024-11-10 10:40:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305014443] [2024-11-10 10:40:11,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:11,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:40:11,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:11,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:40:11,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:40:11,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:11,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 108 transitions, 942 flow. Second operand has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:11,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:11,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:11,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:12,911 INFO L124 PetriNetUnfolderBase]: 2647/6027 cut-off events. [2024-11-10 10:40:12,911 INFO L125 PetriNetUnfolderBase]: For 107889/108121 co-relation queries the response was YES. [2024-11-10 10:40:12,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21216 conditions, 6027 events. 2647/6027 cut-off events. For 107889/108121 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 47548 event pairs, 578 based on Foata normal form. 190/6217 useless extension candidates. Maximal degree in co-relation 21156. Up to 2157 conditions per place. [2024-11-10 10:40:12,957 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 274 selfloop transitions, 36 changer transitions 0/317 dead transitions. [2024-11-10 10:40:12,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 317 transitions, 2719 flow [2024-11-10 10:40:12,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:40:12,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:40:12,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 270 transitions. [2024-11-10 10:40:12,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-10 10:40:12,958 INFO L175 Difference]: Start difference. First operand has 155 places, 108 transitions, 942 flow. Second operand 15 states and 270 transitions. [2024-11-10 10:40:12,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 317 transitions, 2719 flow [2024-11-10 10:40:13,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 317 transitions, 2591 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-11-10 10:40:13,151 INFO L231 Difference]: Finished difference. Result has 167 places, 114 transitions, 990 flow [2024-11-10 10:40:13,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=990, PETRI_PLACES=167, PETRI_TRANSITIONS=114} [2024-11-10 10:40:13,152 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 134 predicate places. [2024-11-10 10:40:13,153 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 114 transitions, 990 flow [2024-11-10 10:40:13,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:13,153 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:13,153 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:13,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:13,357 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,SelfDestructingSolverStorable12 [2024-11-10 10:40:13,358 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:13,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1396877393, now seen corresponding path program 3 times [2024-11-10 10:40:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178721678] [2024-11-10 10:40:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178721678] [2024-11-10 10:40:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178721678] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616974355] [2024-11-10 10:40:13,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:40:13,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:13,658 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) [2024-11-10 10:40:13,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:40:13,707 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:40:13,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:13,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:13,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-10 10:40:13,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:40:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616974355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:40:13,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:40:13,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-11-10 10:40:13,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993926411] [2024-11-10 10:40:13,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:40:13,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:40:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:40:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:40:13,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:13,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 114 transitions, 990 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:13,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:13,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:13,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:14,906 INFO L124 PetriNetUnfolderBase]: 2759/6151 cut-off events. [2024-11-10 10:40:14,907 INFO L125 PetriNetUnfolderBase]: For 82607/82924 co-relation queries the response was YES. [2024-11-10 10:40:14,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22884 conditions, 6151 events. 2759/6151 cut-off events. For 82607/82924 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 48143 event pairs, 741 based on Foata normal form. 96/6243 useless extension candidates. Maximal degree in co-relation 22818. Up to 1474 conditions per place. [2024-11-10 10:40:14,966 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 262 selfloop transitions, 35 changer transitions 9/313 dead transitions. [2024-11-10 10:40:14,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 313 transitions, 3037 flow [2024-11-10 10:40:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:40:14,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:40:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-11-10 10:40:14,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-10 10:40:14,968 INFO L175 Difference]: Start difference. First operand has 167 places, 114 transitions, 990 flow. Second operand 11 states and 209 transitions. [2024-11-10 10:40:14,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 313 transitions, 3037 flow [2024-11-10 10:40:15,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 313 transitions, 2621 flow, removed 155 selfloop flow, removed 8 redundant places. [2024-11-10 10:40:15,349 INFO L231 Difference]: Finished difference. Result has 171 places, 123 transitions, 1116 flow [2024-11-10 10:40:15,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1116, PETRI_PLACES=171, PETRI_TRANSITIONS=123} [2024-11-10 10:40:15,349 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 138 predicate places. [2024-11-10 10:40:15,350 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 123 transitions, 1116 flow [2024-11-10 10:40:15,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:15,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:15,350 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:15,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:15,551 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,SelfDestructingSolverStorable13 [2024-11-10 10:40:15,551 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:15,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:15,552 INFO L85 PathProgramCache]: Analyzing trace with hash 716363544, now seen corresponding path program 3 times [2024-11-10 10:40:15,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:15,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028153553] [2024-11-10 10:40:15,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028153553] [2024-11-10 10:40:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028153553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556949898] [2024-11-10 10:40:15,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:40:15,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:15,890 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) [2024-11-10 10:40:15,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:40:15,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:40:15,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:15,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-10 10:40:15,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-10 10:40:16,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:40:16,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556949898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:40:16,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:40:16,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 21 [2024-11-10 10:40:16,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196678207] [2024-11-10 10:40:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:40:16,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 10:40:16,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 10:40:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2024-11-10 10:40:16,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 123 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:16,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:16,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:16,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:16,990 INFO L124 PetriNetUnfolderBase]: 2820/6316 cut-off events. [2024-11-10 10:40:16,991 INFO L125 PetriNetUnfolderBase]: For 74489/74783 co-relation queries the response was YES. [2024-11-10 10:40:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22516 conditions, 6316 events. 2820/6316 cut-off events. For 74489/74783 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 49987 event pairs, 721 based on Foata normal form. 93/6377 useless extension candidates. Maximal degree in co-relation 22448. Up to 1614 conditions per place. [2024-11-10 10:40:17,035 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 124 selfloop transitions, 8 changer transitions 180/320 dead transitions. [2024-11-10 10:40:17,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 320 transitions, 2974 flow [2024-11-10 10:40:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:40:17,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:40:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-11-10 10:40:17,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-11-10 10:40:17,037 INFO L175 Difference]: Start difference. First operand has 171 places, 123 transitions, 1116 flow. Second operand 11 states and 201 transitions. [2024-11-10 10:40:17,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 320 transitions, 2974 flow [2024-11-10 10:40:17,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 320 transitions, 2847 flow, removed 55 selfloop flow, removed 2 redundant places. [2024-11-10 10:40:17,257 INFO L231 Difference]: Finished difference. Result has 185 places, 78 transitions, 625 flow [2024-11-10 10:40:17,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=185, PETRI_TRANSITIONS=78} [2024-11-10 10:40:17,258 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 152 predicate places. [2024-11-10 10:40:17,258 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 78 transitions, 625 flow [2024-11-10 10:40:17,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:17,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:17,258 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:17,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:17,462 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,SelfDestructingSolverStorable14 [2024-11-10 10:40:17,463 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:17,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1996075041, now seen corresponding path program 3 times [2024-11-10 10:40:17,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:17,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615148556] [2024-11-10 10:40:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:17,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615148556] [2024-11-10 10:40:17,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615148556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:17,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583755040] [2024-11-10 10:40:17,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:40:17,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:17,787 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) [2024-11-10 10:40:17,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-10 10:40:17,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 10:40:17,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:17,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 10:40:17,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:18,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:18,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583755040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:18,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:18,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-10 10:40:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892724874] [2024-11-10 10:40:18,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:18,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 10:40:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 10:40:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 10:40:18,339 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:18,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 78 transitions, 625 flow. Second operand has 41 states, 41 states have (on average 10.317073170731707) internal successors, (423), 41 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:18,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:18,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:19,690 INFO L124 PetriNetUnfolderBase]: 1946/4528 cut-off events. [2024-11-10 10:40:19,690 INFO L125 PetriNetUnfolderBase]: For 65210/65525 co-relation queries the response was YES. [2024-11-10 10:40:19,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16138 conditions, 4528 events. 1946/4528 cut-off events. For 65210/65525 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 31852 event pairs, 529 based on Foata normal form. 386/4900 useless extension candidates. Maximal degree in co-relation 16063. Up to 1167 conditions per place. [2024-11-10 10:40:19,737 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 389 selfloop transitions, 28 changer transitions 16/441 dead transitions. [2024-11-10 10:40:19,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 441 transitions, 3862 flow [2024-11-10 10:40:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 10:40:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-10 10:40:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 427 transitions. [2024-11-10 10:40:19,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43930041152263377 [2024-11-10 10:40:19,739 INFO L175 Difference]: Start difference. First operand has 185 places, 78 transitions, 625 flow. Second operand 27 states and 427 transitions. [2024-11-10 10:40:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 441 transitions, 3862 flow [2024-11-10 10:40:19,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 441 transitions, 3645 flow, removed 84 selfloop flow, removed 17 redundant places. [2024-11-10 10:40:19,828 INFO L231 Difference]: Finished difference. Result has 179 places, 90 transitions, 750 flow [2024-11-10 10:40:19,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=750, PETRI_PLACES=179, PETRI_TRANSITIONS=90} [2024-11-10 10:40:19,828 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 146 predicate places. [2024-11-10 10:40:19,829 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 90 transitions, 750 flow [2024-11-10 10:40:19,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.317073170731707) internal successors, (423), 41 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:19,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:19,829 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:19,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:20,029 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,SelfDestructingSolverStorable15 [2024-11-10 10:40:20,030 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:20,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash 164352425, now seen corresponding path program 3 times [2024-11-10 10:40:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140679366] [2024-11-10 10:40:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:20,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140679366] [2024-11-10 10:40:20,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140679366] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:20,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944565219] [2024-11-10 10:40:20,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:40:20,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:20,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:20,266 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) [2024-11-10 10:40:20,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-10 10:40:20,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-10 10:40:20,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:20,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 10:40:20,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:20,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:20,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944565219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:20,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:20,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2024-11-10 10:40:20,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986210061] [2024-11-10 10:40:20,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:20,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-10 10:40:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-10 10:40:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 10:40:20,812 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:20,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 90 transitions, 750 flow. Second operand has 41 states, 41 states have (on average 10.317073170731707) internal successors, (423), 41 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:20,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:20,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:20,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:22,446 INFO L124 PetriNetUnfolderBase]: 2497/5823 cut-off events. [2024-11-10 10:40:22,447 INFO L125 PetriNetUnfolderBase]: For 62272/62328 co-relation queries the response was YES. [2024-11-10 10:40:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 5823 events. 2497/5823 cut-off events. For 62272/62328 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 42908 event pairs, 824 based on Foata normal form. 348/6169 useless extension candidates. Maximal degree in co-relation 20911. Up to 2041 conditions per place. [2024-11-10 10:40:22,506 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 427 selfloop transitions, 28 changer transitions 15/478 dead transitions. [2024-11-10 10:40:22,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 478 transitions, 3924 flow [2024-11-10 10:40:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 10:40:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-10 10:40:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 452 transitions. [2024-11-10 10:40:22,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2024-11-10 10:40:22,508 INFO L175 Difference]: Start difference. First operand has 179 places, 90 transitions, 750 flow. Second operand 27 states and 452 transitions. [2024-11-10 10:40:22,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 478 transitions, 3924 flow [2024-11-10 10:40:22,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 478 transitions, 3788 flow, removed 49 selfloop flow, removed 14 redundant places. [2024-11-10 10:40:22,617 INFO L231 Difference]: Finished difference. Result has 203 places, 102 transitions, 846 flow [2024-11-10 10:40:22,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=846, PETRI_PLACES=203, PETRI_TRANSITIONS=102} [2024-11-10 10:40:22,618 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 170 predicate places. [2024-11-10 10:40:22,618 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 102 transitions, 846 flow [2024-11-10 10:40:22,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 10.317073170731707) internal successors, (423), 41 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:22,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:22,619 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:22,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:22,820 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,SelfDestructingSolverStorable16 [2024-11-10 10:40:22,820 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:22,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 174000531, now seen corresponding path program 4 times [2024-11-10 10:40:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687654129] [2024-11-10 10:40:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:23,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687654129] [2024-11-10 10:40:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687654129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921505720] [2024-11-10 10:40:23,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:40:23,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:23,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:23,432 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) [2024-11-10 10:40:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-10 10:40:23,558 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:40:23,558 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:23,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-10 10:40:23,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:24,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921505720] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:24,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 27] total 77 [2024-11-10 10:40:24,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911774159] [2024-11-10 10:40:24,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:24,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-11-10 10:40:24,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:24,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-11-10 10:40:24,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2275, Invalid=3731, Unknown=0, NotChecked=0, Total=6006 [2024-11-10 10:40:24,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:24,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 102 transitions, 846 flow. Second operand has 78 states, 78 states have (on average 10.179487179487179) internal successors, (794), 78 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:24,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:24,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:27,659 INFO L124 PetriNetUnfolderBase]: 3506/8141 cut-off events. [2024-11-10 10:40:27,659 INFO L125 PetriNetUnfolderBase]: For 249088/249489 co-relation queries the response was YES. [2024-11-10 10:40:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28720 conditions, 8141 events. 3506/8141 cut-off events. For 249088/249489 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 58779 event pairs, 877 based on Foata normal form. 770/8897 useless extension candidates. Maximal degree in co-relation 28636. Up to 2091 conditions per place. [2024-11-10 10:40:27,739 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 761 selfloop transitions, 52 changer transitions 16/837 dead transitions. [2024-11-10 10:40:27,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 837 transitions, 7069 flow [2024-11-10 10:40:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-10 10:40:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-10 10:40:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 799 transitions. [2024-11-10 10:40:27,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-10 10:40:27,742 INFO L175 Difference]: Start difference. First operand has 203 places, 102 transitions, 846 flow. Second operand 51 states and 799 transitions. [2024-11-10 10:40:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 837 transitions, 7069 flow [2024-11-10 10:40:27,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 837 transitions, 6933 flow, removed 49 selfloop flow, removed 14 redundant places. [2024-11-10 10:40:27,882 INFO L231 Difference]: Finished difference. Result has 263 places, 126 transitions, 1158 flow [2024-11-10 10:40:27,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1158, PETRI_PLACES=263, PETRI_TRANSITIONS=126} [2024-11-10 10:40:27,883 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 230 predicate places. [2024-11-10 10:40:27,883 INFO L471 AbstractCegarLoop]: Abstraction has has 263 places, 126 transitions, 1158 flow [2024-11-10 10:40:27,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 10.179487179487179) internal successors, (794), 78 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:27,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:27,884 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:27,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-10 10:40:28,084 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,SelfDestructingSolverStorable17 [2024-11-10 10:40:28,084 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:28,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash -516326395, now seen corresponding path program 4 times [2024-11-10 10:40:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:28,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401285494] [2024-11-10 10:40:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:28,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401285494] [2024-11-10 10:40:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401285494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518530916] [2024-11-10 10:40:28,615 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:40:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:28,618 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) [2024-11-10 10:40:28,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-10 10:40:28,684 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:40:28,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:28,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-10 10:40:28,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:29,194 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:29,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518530916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:29,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:29,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 76 [2024-11-10 10:40:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645147207] [2024-11-10 10:40:29,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:29,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-10 10:40:29,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:29,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-10 10:40:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2269, Invalid=3583, Unknown=0, NotChecked=0, Total=5852 [2024-11-10 10:40:29,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:29,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 126 transitions, 1158 flow. Second operand has 77 states, 77 states have (on average 10.168831168831169) internal successors, (783), 77 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:29,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:29,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:29,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:33,490 INFO L124 PetriNetUnfolderBase]: 4609/10741 cut-off events. [2024-11-10 10:40:33,491 INFO L125 PetriNetUnfolderBase]: For 295792/295896 co-relation queries the response was YES. [2024-11-10 10:40:33,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39173 conditions, 10741 events. 4609/10741 cut-off events. For 295792/295896 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 81530 event pairs, 1496 based on Foata normal form. 696/11435 useless extension candidates. Maximal degree in co-relation 39065. Up to 3841 conditions per place. [2024-11-10 10:40:33,618 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 835 selfloop transitions, 52 changer transitions 15/910 dead transitions. [2024-11-10 10:40:33,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 910 transitions, 7452 flow [2024-11-10 10:40:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-10 10:40:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2024-11-10 10:40:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 848 transitions. [2024-11-10 10:40:33,621 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46187363834422657 [2024-11-10 10:40:33,621 INFO L175 Difference]: Start difference. First operand has 263 places, 126 transitions, 1158 flow. Second operand 51 states and 848 transitions. [2024-11-10 10:40:33,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 910 transitions, 7452 flow [2024-11-10 10:40:33,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 910 transitions, 7196 flow, removed 97 selfloop flow, removed 26 redundant places. [2024-11-10 10:40:33,967 INFO L231 Difference]: Finished difference. Result has 311 places, 150 transitions, 1350 flow [2024-11-10 10:40:33,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1350, PETRI_PLACES=311, PETRI_TRANSITIONS=150} [2024-11-10 10:40:33,968 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 278 predicate places. [2024-11-10 10:40:33,968 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 150 transitions, 1350 flow [2024-11-10 10:40:33,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 10.168831168831169) internal successors, (783), 77 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:33,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:33,969 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:33,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-10 10:40:34,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:34,170 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:34,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:34,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1400031051, now seen corresponding path program 5 times [2024-11-10 10:40:34,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:34,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372758652] [2024-11-10 10:40:34,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:34,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:35,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:35,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372758652] [2024-11-10 10:40:35,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372758652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:35,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413776360] [2024-11-10 10:40:35,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:40:35,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:35,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:35,649 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) [2024-11-10 10:40:35,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-10 10:40:35,725 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-10 10:40:35,725 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:35,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 10:40:35,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:36,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413776360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:39,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-10 10:40:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333588345] [2024-11-10 10:40:39,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:39,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-10 10:40:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:39,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-10 10:40:39,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9133, Invalid=12919, Unknown=0, NotChecked=0, Total=22052 [2024-11-10 10:40:39,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:39,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 150 transitions, 1350 flow. Second operand has 149 states, 149 states have (on average 10.087248322147651) internal successors, (1503), 149 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:39,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:39,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:39,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:40:50,852 INFO L124 PetriNetUnfolderBase]: 6626/15365 cut-off events. [2024-11-10 10:40:50,853 INFO L125 PetriNetUnfolderBase]: For 1704160/1704945 co-relation queries the response was YES. [2024-11-10 10:40:50,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54628 conditions, 15365 events. 6626/15365 cut-off events. For 1704160/1704945 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 112778 event pairs, 1573 based on Foata normal form. 1538/16889 useless extension candidates. Maximal degree in co-relation 54496. Up to 3960 conditions per place. [2024-11-10 10:40:51,024 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 1505 selfloop transitions, 100 changer transitions 16/1629 dead transitions. [2024-11-10 10:40:51,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1629 transitions, 13765 flow [2024-11-10 10:40:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-10 10:40:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-10 10:40:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1543 transitions. [2024-11-10 10:40:51,029 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4329405162738496 [2024-11-10 10:40:51,029 INFO L175 Difference]: Start difference. First operand has 311 places, 150 transitions, 1350 flow. Second operand 99 states and 1543 transitions. [2024-11-10 10:40:51,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1629 transitions, 13765 flow [2024-11-10 10:40:51,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1629 transitions, 13509 flow, removed 97 selfloop flow, removed 26 redundant places. [2024-11-10 10:40:51,770 INFO L231 Difference]: Finished difference. Result has 431 places, 198 transitions, 1974 flow [2024-11-10 10:40:51,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1974, PETRI_PLACES=431, PETRI_TRANSITIONS=198} [2024-11-10 10:40:51,771 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 398 predicate places. [2024-11-10 10:40:51,771 INFO L471 AbstractCegarLoop]: Abstraction has has 431 places, 198 transitions, 1974 flow [2024-11-10 10:40:51,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 10.087248322147651) internal successors, (1503), 149 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:51,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:40:51,773 INFO L204 CegarLoopForPetriNet]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:40:51,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-10 10:40:51,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:51,973 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:40:51,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:40:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1253452611, now seen corresponding path program 5 times [2024-11-10 10:40:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:40:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687896683] [2024-11-10 10:40:51,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:40:51,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:40:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:40:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:40:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687896683] [2024-11-10 10:40:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687896683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:40:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225274552] [2024-11-10 10:40:53,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:40:53,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:40:53,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:40:53,353 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) [2024-11-10 10:40:53,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-10 10:40:53,431 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-10 10:40:53,432 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:40:53,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 10:40:53,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:40:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:54,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:40:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:40:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225274552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:40:57,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:40:57,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2024-11-10 10:40:57,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200337476] [2024-11-10 10:40:57,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:40:57,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-10 10:40:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:40:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-10 10:40:57,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9133, Invalid=12919, Unknown=0, NotChecked=0, Total=22052 [2024-11-10 10:40:57,431 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-11-10 10:40:57,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 198 transitions, 1974 flow. Second operand has 149 states, 149 states have (on average 10.087248322147651) internal successors, (1503), 149 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:40:57,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:40:57,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-11-10 10:40:57,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:41:12,372 INFO L124 PetriNetUnfolderBase]: 8833/20533 cut-off events. [2024-11-10 10:41:12,373 INFO L125 PetriNetUnfolderBase]: For 1885222/1885422 co-relation queries the response was YES. [2024-11-10 10:41:12,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75509 conditions, 20533 events. 8833/20533 cut-off events. For 1885222/1885422 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 158629 event pairs, 2840 based on Foata normal form. 1392/21923 useless extension candidates. Maximal degree in co-relation 75329. Up to 7441 conditions per place. [2024-11-10 10:41:12,670 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 1651 selfloop transitions, 100 changer transitions 15/1774 dead transitions. [2024-11-10 10:41:12,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1774 transitions, 14508 flow [2024-11-10 10:41:12,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-10 10:41:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-11-10 10:41:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1640 transitions. [2024-11-10 10:41:12,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4601571268237935 [2024-11-10 10:41:12,674 INFO L175 Difference]: Start difference. First operand has 431 places, 198 transitions, 1974 flow. Second operand 99 states and 1640 transitions. [2024-11-10 10:41:12,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1774 transitions, 14508 flow [2024-11-10 10:41:14,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1774 transitions, 14012 flow, removed 193 selfloop flow, removed 50 redundant places. [2024-11-10 10:41:14,574 INFO L231 Difference]: Finished difference. Result has 527 places, 246 transitions, 2358 flow [2024-11-10 10:41:14,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2358, PETRI_PLACES=527, PETRI_TRANSITIONS=246} [2024-11-10 10:41:14,575 INFO L277 CegarLoopForPetriNet]: 33 programPoint places, 494 predicate places. [2024-11-10 10:41:14,575 INFO L471 AbstractCegarLoop]: Abstraction has has 527 places, 246 transitions, 2358 flow [2024-11-10 10:41:14,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 10.087248322147651) internal successors, (1503), 149 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:41:14,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:41:14,577 INFO L204 CegarLoopForPetriNet]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:41:14,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-10 10:41:14,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:41:14,781 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-10 10:41:14,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:41:14,782 INFO L85 PathProgramCache]: Analyzing trace with hash -29076805, now seen corresponding path program 6 times [2024-11-10 10:41:14,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:41:14,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970528248] [2024-11-10 10:41:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:41:14,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:41:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat