./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-100.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0.3.0-?-c00e63d-m [2025-02-06 04:46:55,822 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:46:55,890 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:46:55,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:46:55,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:46:55,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:46:55,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:46:55,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:46:55,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:46:55,929 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:46:55,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:46:55,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:46:55,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:46:55,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:46:55,930 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:46:55,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:46:55,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:46:55,931 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:46:55,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:46:55,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:46:55,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:46:55,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:46:55,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:46:55,933 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 [2025-02-06 04:46:56,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:46:56,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:46:56,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:46:56,206 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:46:56,206 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:46:56,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-02-06 04:46:57,494 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53fe85a6e/944bec32e2ac4d45a5ad782a8e8aa454/FLAGf483cae44 [2025-02-06 04:46:57,875 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:46:57,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i [2025-02-06 04:46:57,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53fe85a6e/944bec32e2ac4d45a5ad782a8e8aa454/FLAGf483cae44 [2025-02-06 04:46:57,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/53fe85a6e/944bec32e2ac4d45a5ad782a8e8aa454 [2025-02-06 04:46:57,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:46:57,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:46:57,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:46:57,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:46:57,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:46:57,910 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:46:57" (1/1) ... [2025-02-06 04:46:57,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124ff43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:57, skipping insertion in model container [2025-02-06 04:46:57,911 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:46:57" (1/1) ... [2025-02-06 04:46:57,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:46:58,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2025-02-06 04:46:58,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:46:58,193 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:46:58,241 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-100.i[33026,33039] [2025-02-06 04:46:58,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:46:58,280 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:46:58,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58 WrapperNode [2025-02-06 04:46:58,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:46:58,282 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:46:58,282 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:46:58,282 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:46:58,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,313 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2025-02-06 04:46:58,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:46:58,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:46:58,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:46:58,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:46:58,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,323 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,333 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]. [2025-02-06 04:46:58,334 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,343 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,344 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,346 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:46:58,357 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:46:58,357 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:46:58,357 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:46:58,358 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (1/1) ... [2025-02-06 04:46:58,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:46:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:58,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:46:58,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:46:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:46:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-06 04:46:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-06 04:46:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 04:46:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 04:46:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:46:58,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:46:58,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:46:58,417 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:46:58,532 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:46:58,533 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:46:58,689 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:46:58,690 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:46:58,775 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:46:58,776 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:46:58,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:46:58 BoogieIcfgContainer [2025-02-06 04:46:58,776 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:46:58,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:46:58,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:46:58,783 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:46:58,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:46:57" (1/3) ... [2025-02-06 04:46:58,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe7ad19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:46:58, skipping insertion in model container [2025-02-06 04:46:58,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:46:58" (2/3) ... [2025-02-06 04:46:58,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe7ad19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:46:58, skipping insertion in model container [2025-02-06 04:46:58,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:46:58" (3/3) ... [2025-02-06 04:46:58,786 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-100.i [2025-02-06 04:46:58,803 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:46:58,805 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-100.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 04:46:58,805 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:46:58,856 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:46:58,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow [2025-02-06 04:46:58,920 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2025-02-06 04:46:58,922 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:46:58,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 35 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-06 04:46:58,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow [2025-02-06 04:46:58,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow [2025-02-06 04:46:58,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:46:58,949 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;@5c80e9f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:46:58,949 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 04:46:58,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:46:58,958 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2025-02-06 04:46:58,958 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:46:58,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:58,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:58,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:46:58,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1583119239, now seen corresponding path program 1 times [2025-02-06 04:46:58,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:58,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394071226] [2025-02-06 04:46:58,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:46:58,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:59,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 04:46:59,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 04:46:59,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:46:59,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:46:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394071226] [2025-02-06 04:46:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394071226] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:46:59,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:46:59,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:46:59,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636704547] [2025-02-06 04:46:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:46:59,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:46:59,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:46:59,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:46:59,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:46:59,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:46:59,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:59,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:46:59,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:46:59,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:46:59,625 INFO L124 PetriNetUnfolderBase]: 211/450 cut-off events. [2025-02-06 04:46:59,626 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-06 04:46:59,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 450 events. 211/450 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2214 event pairs, 26 based on Foata normal form. 48/420 useless extension candidates. Maximal degree in co-relation 780. Up to 153 conditions per place. [2025-02-06 04:46:59,635 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 49 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2025-02-06 04:46:59,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 63 transitions, 261 flow [2025-02-06 04:46:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:46:59,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:46:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2025-02-06 04:46:59,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2025-02-06 04:46:59,649 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 7 states and 122 transitions. [2025-02-06 04:46:59,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 63 transitions, 261 flow [2025-02-06 04:46:59,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 63 transitions, 251 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:46:59,658 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 101 flow [2025-02-06 04:46:59,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-02-06 04:46:59,665 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2025-02-06 04:46:59,665 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 101 flow [2025-02-06 04:46:59,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:46:59,666 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:46:59,666 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:46:59,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:46:59,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:46:59,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:46:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1832025527, now seen corresponding path program 1 times [2025-02-06 04:46:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:46:59,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853127721] [2025-02-06 04:46:59,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:46:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:46:59,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:46:59,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:46:59,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:46:59,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:46:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:46:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853127721] [2025-02-06 04:46:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853127721] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:46:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035492585] [2025-02-06 04:46:59,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:46:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:46:59,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:46:59,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:46:59,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:46:59,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 04:46:59,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 04:46:59,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:46:59,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:46:59,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:46:59,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:46:59,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:46:59,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:00,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035492585] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:00,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:47:00,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008351107] [2025-02-06 04:47:00,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:00,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:47:00,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:00,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:47:00,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:47:00,031 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:00,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 101 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:00,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:00,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:00,481 INFO L124 PetriNetUnfolderBase]: 307/630 cut-off events. [2025-02-06 04:47:00,482 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-02-06 04:47:00,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 630 events. 307/630 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3143 event pairs, 26 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 1400. Up to 153 conditions per place. [2025-02-06 04:47:00,489 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 88 selfloop transitions, 17 changer transitions 0/111 dead transitions. [2025-02-06 04:47:00,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 111 transitions, 533 flow [2025-02-06 04:47:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:47:00,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:47:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2025-02-06 04:47:00,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-02-06 04:47:00,494 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 101 flow. Second operand 13 states and 215 transitions. [2025-02-06 04:47:00,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 111 transitions, 533 flow [2025-02-06 04:47:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 111 transitions, 519 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:47:00,503 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 212 flow [2025-02-06 04:47:00,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2025-02-06 04:47:00,505 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 21 predicate places. [2025-02-06 04:47:00,505 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 212 flow [2025-02-06 04:47:00,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:00,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:00,506 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:00,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:47:00,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:00,708 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:00,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash 583391849, now seen corresponding path program 1 times [2025-02-06 04:47:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:00,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199591572] [2025-02-06 04:47:00,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:00,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:00,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 04:47:00,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 04:47:00,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:00,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199591572] [2025-02-06 04:47:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199591572] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:47:00,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:47:00,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:47:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921866789] [2025-02-06 04:47:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:47:00,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:47:00,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:00,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:47:00,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:47:00,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:00,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:00,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:00,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:00,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:01,007 INFO L124 PetriNetUnfolderBase]: 363/760 cut-off events. [2025-02-06 04:47:01,008 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2025-02-06 04:47:01,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 760 events. 363/760 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3991 event pairs, 86 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1926. Up to 245 conditions per place. [2025-02-06 04:47:01,013 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2025-02-06 04:47:01,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 85 transitions, 662 flow [2025-02-06 04:47:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:47:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:47:01,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2025-02-06 04:47:01,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 04:47:01,015 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 212 flow. Second operand 7 states and 112 transitions. [2025-02-06 04:47:01,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 85 transitions, 662 flow [2025-02-06 04:47:01,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 85 transitions, 542 flow, removed 45 selfloop flow, removed 5 redundant places. [2025-02-06 04:47:01,026 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 231 flow [2025-02-06 04:47:01,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=231, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2025-02-06 04:47:01,027 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2025-02-06 04:47:01,027 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 231 flow [2025-02-06 04:47:01,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:01,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:01,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:01,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:47:01,028 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:01,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash 905247519, now seen corresponding path program 1 times [2025-02-06 04:47:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797208751] [2025-02-06 04:47:01,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:01,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 04:47:01,046 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 04:47:01,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:01,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:01,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797208751] [2025-02-06 04:47:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797208751] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387401599] [2025-02-06 04:47:01,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:01,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:01,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:01,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:47:01,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 04:47:01,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 04:47:01,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:01,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:01,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:47:01,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:01,242 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:01,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387401599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:01,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:01,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:47:01,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059984230] [2025-02-06 04:47:01,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:01,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:47:01,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:01,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:47:01,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:47:01,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:01,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 231 flow. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:01,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:01,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:01,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:01,686 INFO L124 PetriNetUnfolderBase]: 531/1054 cut-off events. [2025-02-06 04:47:01,686 INFO L125 PetriNetUnfolderBase]: For 1914/1914 co-relation queries the response was YES. [2025-02-06 04:47:01,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 1054 events. 531/1054 cut-off events. For 1914/1914 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5608 event pairs, 93 based on Foata normal form. 0/962 useless extension candidates. Maximal degree in co-relation 2981. Up to 245 conditions per place. [2025-02-06 04:47:01,694 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 129 selfloop transitions, 22 changer transitions 0/157 dead transitions. [2025-02-06 04:47:01,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 1142 flow [2025-02-06 04:47:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:47:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:47:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2025-02-06 04:47:01,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5435897435897435 [2025-02-06 04:47:01,696 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 231 flow. Second operand 13 states and 212 transitions. [2025-02-06 04:47:01,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 1142 flow [2025-02-06 04:47:01,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 157 transitions, 1123 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 04:47:01,708 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 356 flow [2025-02-06 04:47:01,708 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2025-02-06 04:47:01,709 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2025-02-06 04:47:01,709 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 356 flow [2025-02-06 04:47:01,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:01,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:01,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:01,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:47:01,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:01,910 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:01,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:01,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1053791232, now seen corresponding path program 1 times [2025-02-06 04:47:01,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:01,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9005878] [2025-02-06 04:47:01,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:01,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:01,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:47:01,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:47:01,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:01,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:01,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9005878] [2025-02-06 04:47:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9005878] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:47:01,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:47:01,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:47:01,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357094265] [2025-02-06 04:47:01,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:47:01,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:47:01,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:01,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:47:01,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:47:01,994 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:01,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:01,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:01,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:01,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:02,197 INFO L124 PetriNetUnfolderBase]: 555/1112 cut-off events. [2025-02-06 04:47:02,198 INFO L125 PetriNetUnfolderBase]: For 3869/3869 co-relation queries the response was YES. [2025-02-06 04:47:02,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1112 events. 555/1112 cut-off events. For 3869/3869 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6017 event pairs, 121 based on Foata normal form. 16/1066 useless extension candidates. Maximal degree in co-relation 3680. Up to 421 conditions per place. [2025-02-06 04:47:02,222 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 62 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2025-02-06 04:47:02,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 83 transitions, 707 flow [2025-02-06 04:47:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:47:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:47:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-02-06 04:47:02,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2025-02-06 04:47:02,225 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 356 flow. Second operand 6 states and 93 transitions. [2025-02-06 04:47:02,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 83 transitions, 707 flow [2025-02-06 04:47:02,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 629 flow, removed 27 selfloop flow, removed 5 redundant places. [2025-02-06 04:47:02,240 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 344 flow [2025-02-06 04:47:02,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2025-02-06 04:47:02,241 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2025-02-06 04:47:02,242 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 344 flow [2025-02-06 04:47:02,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:02,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:02,242 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:02,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:47:02,242 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:02,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1636490914, now seen corresponding path program 1 times [2025-02-06 04:47:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97954066] [2025-02-06 04:47:02,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:02,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 04:47:02,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:47:02,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:02,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:02,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:02,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97954066] [2025-02-06 04:47:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97954066] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:47:02,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:47:02,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:47:02,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744369707] [2025-02-06 04:47:02,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:47:02,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:47:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:02,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:47:02,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:47:02,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:02,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:02,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:02,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:02,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:02,495 INFO L124 PetriNetUnfolderBase]: 580/1166 cut-off events. [2025-02-06 04:47:02,495 INFO L125 PetriNetUnfolderBase]: For 4158/4158 co-relation queries the response was YES. [2025-02-06 04:47:02,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3962 conditions, 1166 events. 580/1166 cut-off events. For 4158/4158 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6421 event pairs, 117 based on Foata normal form. 17/1117 useless extension candidates. Maximal degree in co-relation 3784. Up to 457 conditions per place. [2025-02-06 04:47:02,505 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 67 selfloop transitions, 15 changer transitions 0/88 dead transitions. [2025-02-06 04:47:02,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 705 flow [2025-02-06 04:47:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:47:02,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:47:02,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2025-02-06 04:47:02,506 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2025-02-06 04:47:02,506 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 344 flow. Second operand 6 states and 97 transitions. [2025-02-06 04:47:02,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 705 flow [2025-02-06 04:47:02,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 675 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 04:47:02,518 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 363 flow [2025-02-06 04:47:02,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2025-02-06 04:47:02,519 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2025-02-06 04:47:02,519 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 363 flow [2025-02-06 04:47:02,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:02,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:02,519 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:02,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:47:02,519 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:02,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:02,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1692632967, now seen corresponding path program 2 times [2025-02-06 04:47:02,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:02,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405168370] [2025-02-06 04:47:02,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:02,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:02,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-06 04:47:02,531 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:47:02,531 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:02,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:02,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405168370] [2025-02-06 04:47:02,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405168370] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:02,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975138548] [2025-02-06 04:47:02,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:02,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:02,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:02,648 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:02,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:47:02,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-06 04:47:02,697 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 04:47:02,697 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:02,697 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:02,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:02,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:02,785 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:02,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975138548] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:02,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:02,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:47:02,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070621798] [2025-02-06 04:47:02,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:02,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:47:02,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:02,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:47:02,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:47:02,902 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:02,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 363 flow. Second operand has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:02,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:02,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:02,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:03,752 INFO L124 PetriNetUnfolderBase]: 934/1778 cut-off events. [2025-02-06 04:47:03,752 INFO L125 PetriNetUnfolderBase]: For 14079/14079 co-relation queries the response was YES. [2025-02-06 04:47:03,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1778 events. 934/1778 cut-off events. For 14079/14079 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9544 event pairs, 93 based on Foata normal form. 240/1948 useless extension candidates. Maximal degree in co-relation 6346. Up to 351 conditions per place. [2025-02-06 04:47:03,767 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 270 selfloop transitions, 40 changer transitions 0/316 dead transitions. [2025-02-06 04:47:03,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 316 transitions, 2588 flow [2025-02-06 04:47:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 04:47:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 04:47:03,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 413 transitions. [2025-02-06 04:47:03,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5506666666666666 [2025-02-06 04:47:03,770 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 363 flow. Second operand 25 states and 413 transitions. [2025-02-06 04:47:03,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 316 transitions, 2588 flow [2025-02-06 04:47:03,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 316 transitions, 2457 flow, removed 55 selfloop flow, removed 3 redundant places. [2025-02-06 04:47:03,796 INFO L231 Difference]: Finished difference. Result has 106 places, 74 transitions, 650 flow [2025-02-06 04:47:03,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=650, PETRI_PLACES=106, PETRI_TRANSITIONS=74} [2025-02-06 04:47:03,797 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2025-02-06 04:47:03,797 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 74 transitions, 650 flow [2025-02-06 04:47:03,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.130434782608695) internal successors, (210), 23 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:03,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:03,798 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:03,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:47:04,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:04,002 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:04,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:04,002 INFO L85 PathProgramCache]: Analyzing trace with hash -872883018, now seen corresponding path program 1 times [2025-02-06 04:47:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:04,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886794911] [2025-02-06 04:47:04,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:04,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:04,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:47:04,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:47:04,012 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:04,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886794911] [2025-02-06 04:47:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886794911] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335669332] [2025-02-06 04:47:04,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:04,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:47:04,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:47:04,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:47:04,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:04,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:04,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:47:04,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:04,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335669332] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:04,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:47:04,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417106566] [2025-02-06 04:47:04,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:47:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:04,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:47:04,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:47:04,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:04,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 74 transitions, 650 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:04,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:04,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:04,614 INFO L124 PetriNetUnfolderBase]: 1006/1922 cut-off events. [2025-02-06 04:47:04,615 INFO L125 PetriNetUnfolderBase]: For 22234/22234 co-relation queries the response was YES. [2025-02-06 04:47:04,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8322 conditions, 1922 events. 1006/1922 cut-off events. For 22234/22234 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10726 event pairs, 202 based on Foata normal form. 48/1892 useless extension candidates. Maximal degree in co-relation 7777. Up to 746 conditions per place. [2025-02-06 04:47:04,635 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 108 selfloop transitions, 24 changer transitions 0/138 dead transitions. [2025-02-06 04:47:04,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 138 transitions, 1426 flow [2025-02-06 04:47:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:47:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:47:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2025-02-06 04:47:04,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5074074074074074 [2025-02-06 04:47:04,637 INFO L175 Difference]: Start difference. First operand has 106 places, 74 transitions, 650 flow. Second operand 9 states and 137 transitions. [2025-02-06 04:47:04,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 138 transitions, 1426 flow [2025-02-06 04:47:04,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1186 flow, removed 84 selfloop flow, removed 12 redundant places. [2025-02-06 04:47:04,691 INFO L231 Difference]: Finished difference. Result has 105 places, 77 transitions, 574 flow [2025-02-06 04:47:04,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=574, PETRI_PLACES=105, PETRI_TRANSITIONS=77} [2025-02-06 04:47:04,692 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2025-02-06 04:47:04,692 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 77 transitions, 574 flow [2025-02-06 04:47:04,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:04,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:04,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:04,700 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 04:47:04,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-06 04:47:04,897 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:04,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 808358602, now seen corresponding path program 1 times [2025-02-06 04:47:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016960490] [2025-02-06 04:47:04,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:04,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:47:04,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:47:04,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:04,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:04,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016960490] [2025-02-06 04:47:04,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016960490] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905478302] [2025-02-06 04:47:04,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:47:04,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:04,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:04,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:47:05,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 04:47:05,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 04:47:05,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:47:05,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:05,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 04:47:05,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:05,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905478302] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:05,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:05,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2025-02-06 04:47:05,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561131302] [2025-02-06 04:47:05,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:05,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 04:47:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:05,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 04:47:05,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-06 04:47:05,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:05,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 77 transitions, 574 flow. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:05,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:05,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:05,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:05,508 INFO L124 PetriNetUnfolderBase]: 1135/2126 cut-off events. [2025-02-06 04:47:05,508 INFO L125 PetriNetUnfolderBase]: For 19339/19339 co-relation queries the response was YES. [2025-02-06 04:47:05,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 2126 events. 1135/2126 cut-off events. For 19339/19339 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11834 event pairs, 114 based on Foata normal form. 87/2141 useless extension candidates. Maximal degree in co-relation 7974. Up to 819 conditions per place. [2025-02-06 04:47:05,533 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 136 selfloop transitions, 24 changer transitions 0/166 dead transitions. [2025-02-06 04:47:05,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1535 flow [2025-02-06 04:47:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:47:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:47:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-06 04:47:05,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 04:47:05,535 INFO L175 Difference]: Start difference. First operand has 105 places, 77 transitions, 574 flow. Second operand 9 states and 144 transitions. [2025-02-06 04:47:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1535 flow [2025-02-06 04:47:05,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 166 transitions, 1457 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-02-06 04:47:05,610 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 594 flow [2025-02-06 04:47:05,610 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2025-02-06 04:47:05,611 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2025-02-06 04:47:05,611 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 594 flow [2025-02-06 04:47:05,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:05,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:05,611 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:05,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:47:05,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:05,812 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:05,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash 98785257, now seen corresponding path program 2 times [2025-02-06 04:47:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101962157] [2025-02-06 04:47:05,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:05,817 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-06 04:47:05,821 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:47:05,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:05,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:05,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101962157] [2025-02-06 04:47:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101962157] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239593009] [2025-02-06 04:47:05,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:05,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:05,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:05,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:47:05,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-06 04:47:05,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:47:05,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:05,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:05,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:05,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:06,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239593009] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:06,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:47:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650040990] [2025-02-06 04:47:06,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:47:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:06,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:47:06,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:47:06,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:06,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 594 flow. Second operand has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:06,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:06,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:06,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:07,120 INFO L124 PetriNetUnfolderBase]: 1759/3257 cut-off events. [2025-02-06 04:47:07,120 INFO L125 PetriNetUnfolderBase]: For 55614/55614 co-relation queries the response was YES. [2025-02-06 04:47:07,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13328 conditions, 3257 events. 1759/3257 cut-off events. For 55614/55614 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18874 event pairs, 279 based on Foata normal form. 420/3574 useless extension candidates. Maximal degree in co-relation 12705. Up to 697 conditions per place. [2025-02-06 04:47:07,150 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 441 selfloop transitions, 46 changer transitions 0/493 dead transitions. [2025-02-06 04:47:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 493 transitions, 4418 flow [2025-02-06 04:47:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 04:47:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 04:47:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 410 transitions. [2025-02-06 04:47:07,153 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2025-02-06 04:47:07,153 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 594 flow. Second operand 25 states and 410 transitions. [2025-02-06 04:47:07,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 493 transitions, 4418 flow [2025-02-06 04:47:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 493 transitions, 4308 flow, removed 15 selfloop flow, removed 5 redundant places. [2025-02-06 04:47:07,243 INFO L231 Difference]: Finished difference. Result has 142 places, 98 transitions, 858 flow [2025-02-06 04:47:07,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=858, PETRI_PLACES=142, PETRI_TRANSITIONS=98} [2025-02-06 04:47:07,244 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2025-02-06 04:47:07,245 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 98 transitions, 858 flow [2025-02-06 04:47:07,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.304347826086957) internal successors, (214), 23 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:07,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:07,245 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:07,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 04:47:07,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-06 04:47:07,449 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:07,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:07,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1659409280, now seen corresponding path program 2 times [2025-02-06 04:47:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976985700] [2025-02-06 04:47:07,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:07,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:07,456 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:47:07,460 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:47:07,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:07,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976985700] [2025-02-06 04:47:07,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976985700] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:07,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859070476] [2025-02-06 04:47:07,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:07,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:07,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:07,567 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:07,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:47:07,605 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:47:07,615 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:47:07,615 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:07,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:07,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:07,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:07,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:07,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859070476] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:07,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:07,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:47:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695250831] [2025-02-06 04:47:07,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:07,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:47:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:07,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:47:07,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:47:07,837 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:07,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 98 transitions, 858 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:07,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:07,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:07,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:08,627 INFO L124 PetriNetUnfolderBase]: 2011/3641 cut-off events. [2025-02-06 04:47:08,627 INFO L125 PetriNetUnfolderBase]: For 88256/88256 co-relation queries the response was YES. [2025-02-06 04:47:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17399 conditions, 3641 events. 2011/3641 cut-off events. For 88256/88256 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21105 event pairs, 234 based on Foata normal form. 168/3718 useless extension candidates. Maximal degree in co-relation 16736. Up to 1406 conditions per place. [2025-02-06 04:47:08,661 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 237 selfloop transitions, 36 changer transitions 0/279 dead transitions. [2025-02-06 04:47:08,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 279 transitions, 3392 flow [2025-02-06 04:47:08,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:47:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:47:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 224 transitions. [2025-02-06 04:47:08,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2025-02-06 04:47:08,663 INFO L175 Difference]: Start difference. First operand has 142 places, 98 transitions, 858 flow. Second operand 15 states and 224 transitions. [2025-02-06 04:47:08,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 279 transitions, 3392 flow [2025-02-06 04:47:08,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 2600 flow, removed 312 selfloop flow, removed 12 redundant places. [2025-02-06 04:47:08,915 INFO L231 Difference]: Finished difference. Result has 150 places, 104 transitions, 836 flow [2025-02-06 04:47:08,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=836, PETRI_PLACES=150, PETRI_TRANSITIONS=104} [2025-02-06 04:47:08,916 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2025-02-06 04:47:08,916 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 104 transitions, 836 flow [2025-02-06 04:47:08,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:08,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:08,917 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:08,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:47:09,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:09,118 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:09,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:09,118 INFO L85 PathProgramCache]: Analyzing trace with hash -100918178, now seen corresponding path program 2 times [2025-02-06 04:47:09,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:09,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886015427] [2025-02-06 04:47:09,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:09,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:09,122 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:47:09,126 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:47:09,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:09,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886015427] [2025-02-06 04:47:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886015427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247867680] [2025-02-06 04:47:09,225 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:47:09,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:09,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:09,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:09,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:47:09,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 04:47:09,277 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 04:47:09,277 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:47:09,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:09,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:09,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:09,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247867680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:09,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:09,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2025-02-06 04:47:09,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604162388] [2025-02-06 04:47:09,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:09,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:47:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:09,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:47:09,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:47:09,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:09,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 104 transitions, 836 flow. Second operand has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:09,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:09,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:09,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:10,220 INFO L124 PetriNetUnfolderBase]: 2269/4061 cut-off events. [2025-02-06 04:47:10,220 INFO L125 PetriNetUnfolderBase]: For 104835/104835 co-relation queries the response was YES. [2025-02-06 04:47:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17812 conditions, 4061 events. 2269/4061 cut-off events. For 104835/104835 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23593 event pairs, 275 based on Foata normal form. 174/4150 useless extension candidates. Maximal degree in co-relation 17481. Up to 1821 conditions per place. [2025-02-06 04:47:10,248 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 256 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2025-02-06 04:47:10,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 298 transitions, 2985 flow [2025-02-06 04:47:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:47:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:47:10,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2025-02-06 04:47:10,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2025-02-06 04:47:10,250 INFO L175 Difference]: Start difference. First operand has 150 places, 104 transitions, 836 flow. Second operand 15 states and 237 transitions. [2025-02-06 04:47:10,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 298 transitions, 2985 flow [2025-02-06 04:47:10,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 298 transitions, 2845 flow, removed 37 selfloop flow, removed 8 redundant places. [2025-02-06 04:47:10,489 INFO L231 Difference]: Finished difference. Result has 162 places, 110 transitions, 872 flow [2025-02-06 04:47:10,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=872, PETRI_PLACES=162, PETRI_TRANSITIONS=110} [2025-02-06 04:47:10,490 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2025-02-06 04:47:10,490 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 110 transitions, 872 flow [2025-02-06 04:47:10,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.478260869565217) internal successors, (218), 23 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:10,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:10,490 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:10,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:47:10,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:10,692 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:10,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:10,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1243535751, now seen corresponding path program 3 times [2025-02-06 04:47:10,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:10,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171512263] [2025-02-06 04:47:10,693 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:10,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 6 equivalence classes. [2025-02-06 04:47:10,708 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 10 of 18 statements. [2025-02-06 04:47:10,709 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:47:10,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:47:10,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171512263] [2025-02-06 04:47:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171512263] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778578573] [2025-02-06 04:47:10,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:10,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:10,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 04:47:10,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 6 equivalence classes. [2025-02-06 04:47:10,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 10 of 18 statements. [2025-02-06 04:47:10,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:47:10,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:10,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:10,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:47:10,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:47:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778578573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:47:10,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:47:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-02-06 04:47:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047473877] [2025-02-06 04:47:10,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:47:10,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:47:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:10,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:47:10,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:47:10,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-06 04:47:10,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 110 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:10,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:10,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-06 04:47:10,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:11,577 INFO L124 PetriNetUnfolderBase]: 2451/4403 cut-off events. [2025-02-06 04:47:11,577 INFO L125 PetriNetUnfolderBase]: For 98090/98090 co-relation queries the response was YES. [2025-02-06 04:47:11,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19694 conditions, 4403 events. 2451/4403 cut-off events. For 98090/98090 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25870 event pairs, 650 based on Foata normal form. 82/4432 useless extension candidates. Maximal degree in co-relation 19027. Up to 1557 conditions per place. [2025-02-06 04:47:11,693 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 210 selfloop transitions, 32 changer transitions 7/254 dead transitions. [2025-02-06 04:47:11,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 254 transitions, 2737 flow [2025-02-06 04:47:11,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:47:11,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:47:11,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2025-02-06 04:47:11,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2025-02-06 04:47:11,695 INFO L175 Difference]: Start difference. First operand has 162 places, 110 transitions, 872 flow. Second operand 9 states and 146 transitions. [2025-02-06 04:47:11,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 254 transitions, 2737 flow [2025-02-06 04:47:11,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 254 transitions, 2347 flow, removed 148 selfloop flow, removed 8 redundant places. [2025-02-06 04:47:11,916 INFO L231 Difference]: Finished difference. Result has 164 places, 116 transitions, 964 flow [2025-02-06 04:47:11,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=964, PETRI_PLACES=164, PETRI_TRANSITIONS=116} [2025-02-06 04:47:11,917 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2025-02-06 04:47:11,917 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 116 transitions, 964 flow [2025-02-06 04:47:11,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:11,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:11,917 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:11,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 04:47:12,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:12,118 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:12,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:12,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1372023849, now seen corresponding path program 3 times [2025-02-06 04:47:12,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:12,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630220424] [2025-02-06 04:47:12,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:12,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:12,124 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 6 equivalence classes. [2025-02-06 04:47:12,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 20 statements. [2025-02-06 04:47:12,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:47:12,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:12,194 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:47:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630220424] [2025-02-06 04:47:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630220424] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946078937] [2025-02-06 04:47:12,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:12,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:12,197 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:12,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 04:47:12,243 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 6 equivalence classes. [2025-02-06 04:47:12,252 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 12 of 20 statements. [2025-02-06 04:47:12,252 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:47:12,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:12,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 04:47:12,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-06 04:47:12,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:47:12,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946078937] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:47:12,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:47:12,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-02-06 04:47:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334989676] [2025-02-06 04:47:12,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:47:12,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:47:12,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:12,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:47:12,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:47:12,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2025-02-06 04:47:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 116 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:12,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2025-02-06 04:47:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:12,852 INFO L124 PetriNetUnfolderBase]: 2581/4529 cut-off events. [2025-02-06 04:47:12,852 INFO L125 PetriNetUnfolderBase]: For 116688/116688 co-relation queries the response was YES. [2025-02-06 04:47:12,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20556 conditions, 4529 events. 2581/4529 cut-off events. For 116688/116688 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25982 event pairs, 680 based on Foata normal form. 89/4616 useless extension candidates. Maximal degree in co-relation 19916. Up to 1677 conditions per place. [2025-02-06 04:47:12,882 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 104 selfloop transitions, 7 changer transitions 145/261 dead transitions. [2025-02-06 04:47:12,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 261 transitions, 2776 flow [2025-02-06 04:47:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:47:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:47:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2025-02-06 04:47:12,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2025-02-06 04:47:12,883 INFO L175 Difference]: Start difference. First operand has 164 places, 116 transitions, 964 flow. Second operand 9 states and 143 transitions. [2025-02-06 04:47:12,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 261 transitions, 2776 flow [2025-02-06 04:47:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 261 transitions, 2322 flow, removed 220 selfloop flow, removed 2 redundant places. [2025-02-06 04:47:13,109 INFO L231 Difference]: Finished difference. Result has 174 places, 72 transitions, 519 flow [2025-02-06 04:47:13,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=174, PETRI_TRANSITIONS=72} [2025-02-06 04:47:13,109 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2025-02-06 04:47:13,109 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 72 transitions, 519 flow [2025-02-06 04:47:13,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:13,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:13,110 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:13,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 04:47:13,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 04:47:13,310 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:13,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1222592192, now seen corresponding path program 3 times [2025-02-06 04:47:13,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:13,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582771365] [2025-02-06 04:47:13,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:13,318 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-06 04:47:13,327 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:47:13,328 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 04:47:13,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:13,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582771365] [2025-02-06 04:47:13,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582771365] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258524645] [2025-02-06 04:47:13,527 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:13,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:13,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:13,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 04:47:13,565 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-06 04:47:13,579 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:47:13,579 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 04:47:13,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:13,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 04:47:13,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:13,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:14,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258524645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:14,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:14,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-06 04:47:14,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734727883] [2025-02-06 04:47:14,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:14,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 04:47:14,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:14,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 04:47:14,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 04:47:14,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:14,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 72 transitions, 519 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:14,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:14,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:14,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:14,985 INFO L124 PetriNetUnfolderBase]: 1771/3205 cut-off events. [2025-02-06 04:47:14,985 INFO L125 PetriNetUnfolderBase]: For 67122/67122 co-relation queries the response was YES. [2025-02-06 04:47:14,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14164 conditions, 3205 events. 1771/3205 cut-off events. For 67122/67122 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16220 event pairs, 421 based on Foata normal form. 336/3541 useless extension candidates. Maximal degree in co-relation 14092. Up to 1020 conditions per place. [2025-02-06 04:47:15,003 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 385 selfloop transitions, 28 changer transitions 15/434 dead transitions. [2025-02-06 04:47:15,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 434 transitions, 4558 flow [2025-02-06 04:47:15,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 04:47:15,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 04:47:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 395 transitions. [2025-02-06 04:47:15,005 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2025-02-06 04:47:15,006 INFO L175 Difference]: Start difference. First operand has 174 places, 72 transitions, 519 flow. Second operand 27 states and 395 transitions. [2025-02-06 04:47:15,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 434 transitions, 4558 flow [2025-02-06 04:47:15,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 434 transitions, 3461 flow, removed 524 selfloop flow, removed 16 redundant places. [2025-02-06 04:47:15,058 INFO L231 Difference]: Finished difference. Result has 171 places, 84 transitions, 644 flow [2025-02-06 04:47:15,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=644, PETRI_PLACES=171, PETRI_TRANSITIONS=84} [2025-02-06 04:47:15,059 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2025-02-06 04:47:15,059 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 84 transitions, 644 flow [2025-02-06 04:47:15,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:15,059 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:15,059 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:15,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 04:47:15,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 04:47:15,260 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:15,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1182155998, now seen corresponding path program 3 times [2025-02-06 04:47:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145695912] [2025-02-06 04:47:15,261 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:15,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:15,265 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-06 04:47:15,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:47:15,270 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 04:47:15,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145695912] [2025-02-06 04:47:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145695912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403302329] [2025-02-06 04:47:15,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:47:15,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:15,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:15,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:15,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 04:47:15,495 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-06 04:47:15,510 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 04:47:15,511 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 04:47:15,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:15,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 04:47:15,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:15,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:15,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403302329] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:15,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:15,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2025-02-06 04:47:15,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090495162] [2025-02-06 04:47:15,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:15,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-06 04:47:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:15,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-06 04:47:15,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1075, Unknown=0, NotChecked=0, Total=1640 [2025-02-06 04:47:15,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:15,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 84 transitions, 644 flow. Second operand has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:15,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:15,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:15,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:16,959 INFO L124 PetriNetUnfolderBase]: 2287/4074 cut-off events. [2025-02-06 04:47:16,960 INFO L125 PetriNetUnfolderBase]: For 36013/36013 co-relation queries the response was YES. [2025-02-06 04:47:16,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17035 conditions, 4074 events. 2287/4074 cut-off events. For 36013/36013 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 20966 event pairs, 693 based on Foata normal form. 348/4422 useless extension candidates. Maximal degree in co-relation 16965. Up to 1836 conditions per place. [2025-02-06 04:47:16,992 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 423 selfloop transitions, 28 changer transitions 14/471 dead transitions. [2025-02-06 04:47:16,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 471 transitions, 3778 flow [2025-02-06 04:47:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 04:47:16,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 04:47:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 420 transitions. [2025-02-06 04:47:16,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-02-06 04:47:16,994 INFO L175 Difference]: Start difference. First operand has 171 places, 84 transitions, 644 flow. Second operand 27 states and 420 transitions. [2025-02-06 04:47:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 471 transitions, 3778 flow [2025-02-06 04:47:17,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 471 transitions, 3618 flow, removed 61 selfloop flow, removed 14 redundant places. [2025-02-06 04:47:17,089 INFO L231 Difference]: Finished difference. Result has 195 places, 96 transitions, 716 flow [2025-02-06 04:47:17,090 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=716, PETRI_PLACES=195, PETRI_TRANSITIONS=96} [2025-02-06 04:47:17,090 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2025-02-06 04:47:17,090 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 96 transitions, 716 flow [2025-02-06 04:47:17,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 9.268292682926829) internal successors, (380), 41 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:17,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:17,091 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:17,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 04:47:17,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:17,292 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:17,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2053487640, now seen corresponding path program 4 times [2025-02-06 04:47:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542168269] [2025-02-06 04:47:17,293 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:47:17,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:17,299 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-06 04:47:17,309 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 04:47:17,309 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:47:17,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542168269] [2025-02-06 04:47:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542168269] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021376885] [2025-02-06 04:47:17,849 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:47:17,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:17,851 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:17,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 04:47:17,891 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-06 04:47:17,910 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 04:47:17,910 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:47:17,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:17,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 04:47:17,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:18,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021376885] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:19,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:19,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 76 [2025-02-06 04:47:19,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286521288] [2025-02-06 04:47:19,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:19,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-02-06 04:47:19,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:19,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-02-06 04:47:19,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=3605, Unknown=0, NotChecked=0, Total=5852 [2025-02-06 04:47:19,104 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:19,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 96 transitions, 716 flow. Second operand has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:19,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:19,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:19,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:21,316 INFO L124 PetriNetUnfolderBase]: 3295/5752 cut-off events. [2025-02-06 04:47:21,316 INFO L125 PetriNetUnfolderBase]: For 187620/187620 co-relation queries the response was YES. [2025-02-06 04:47:21,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23864 conditions, 5752 events. 3295/5752 cut-off events. For 187620/187620 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 28342 event pairs, 745 based on Foata normal form. 672/6424 useless extension candidates. Maximal degree in co-relation 23782. Up to 1884 conditions per place. [2025-02-06 04:47:21,364 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 757 selfloop transitions, 52 changer transitions 15/830 dead transitions. [2025-02-06 04:47:21,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 830 transitions, 6813 flow [2025-02-06 04:47:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-06 04:47:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-02-06 04:47:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 743 transitions. [2025-02-06 04:47:21,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48562091503267973 [2025-02-06 04:47:21,366 INFO L175 Difference]: Start difference. First operand has 195 places, 96 transitions, 716 flow. Second operand 51 states and 743 transitions. [2025-02-06 04:47:21,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 830 transitions, 6813 flow [2025-02-06 04:47:21,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 830 transitions, 6653 flow, removed 61 selfloop flow, removed 14 redundant places. [2025-02-06 04:47:21,459 INFO L231 Difference]: Finished difference. Result has 255 places, 120 transitions, 1004 flow [2025-02-06 04:47:21,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1004, PETRI_PLACES=255, PETRI_TRANSITIONS=120} [2025-02-06 04:47:21,459 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2025-02-06 04:47:21,460 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 120 transitions, 1004 flow [2025-02-06 04:47:21,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 9.142857142857142) internal successors, (704), 77 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:21,460 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:21,460 INFO L206 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:21,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 04:47:21,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 04:47:21,661 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:21,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:21,661 INFO L85 PathProgramCache]: Analyzing trace with hash 913475812, now seen corresponding path program 4 times [2025-02-06 04:47:21,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:21,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507974783] [2025-02-06 04:47:21,661 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:47:21,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:21,666 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-06 04:47:21,677 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 04:47:21,678 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:47:21,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:22,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507974783] [2025-02-06 04:47:22,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507974783] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486756629] [2025-02-06 04:47:22,351 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:47:22,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:22,355 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:22,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 04:47:22,403 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-02-06 04:47:22,421 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 04:47:22,421 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:47:22,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:22,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 04:47:22,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:22,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486756629] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:23,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 77 [2025-02-06 04:47:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990777348] [2025-02-06 04:47:23,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:23,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-06 04:47:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:23,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-06 04:47:23,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2253, Invalid=3753, Unknown=0, NotChecked=0, Total=6006 [2025-02-06 04:47:23,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:23,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 120 transitions, 1004 flow. Second operand has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:23,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:23,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:23,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:26,563 INFO L124 PetriNetUnfolderBase]: 4327/7482 cut-off events. [2025-02-06 04:47:26,563 INFO L125 PetriNetUnfolderBase]: For 219479/219479 co-relation queries the response was YES. [2025-02-06 04:47:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32071 conditions, 7482 events. 4327/7482 cut-off events. For 219479/219479 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 38101 event pairs, 1317 based on Foata normal form. 696/8178 useless extension candidates. Maximal degree in co-relation 31965. Up to 3516 conditions per place. [2025-02-06 04:47:26,620 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 831 selfloop transitions, 52 changer transitions 14/903 dead transitions. [2025-02-06 04:47:26,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 903 transitions, 7258 flow [2025-02-06 04:47:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-06 04:47:26,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2025-02-06 04:47:26,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 792 transitions. [2025-02-06 04:47:26,622 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2025-02-06 04:47:26,622 INFO L175 Difference]: Start difference. First operand has 255 places, 120 transitions, 1004 flow. Second operand 51 states and 792 transitions. [2025-02-06 04:47:26,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 903 transitions, 7258 flow [2025-02-06 04:47:26,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 903 transitions, 6954 flow, removed 121 selfloop flow, removed 26 redundant places. [2025-02-06 04:47:26,802 INFO L231 Difference]: Finished difference. Result has 303 places, 144 transitions, 1148 flow [2025-02-06 04:47:26,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=1148, PETRI_PLACES=303, PETRI_TRANSITIONS=144} [2025-02-06 04:47:26,803 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 274 predicate places. [2025-02-06 04:47:26,803 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 144 transitions, 1148 flow [2025-02-06 04:47:26,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 9.179487179487179) internal successors, (716), 78 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:26,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:26,804 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:26,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 04:47:27,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 04:47:27,004 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:27,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -532694808, now seen corresponding path program 5 times [2025-02-06 04:47:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123923490] [2025-02-06 04:47:27,005 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:47:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:27,012 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-02-06 04:47:27,031 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 04:47:27,032 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 04:47:27,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:28,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:28,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123923490] [2025-02-06 04:47:28,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123923490] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:28,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141748576] [2025-02-06 04:47:28,321 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:47:28,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:28,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:28,324 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:28,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 04:47:28,362 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-02-06 04:47:28,394 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 04:47:28,394 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 04:47:28,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:28,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 04:47:28,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:29,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:29,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:32,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141748576] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:32,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:32,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-02-06 04:47:32,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537204100] [2025-02-06 04:47:32,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:32,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-02-06 04:47:32,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:32,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-02-06 04:47:32,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-02-06 04:47:32,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:32,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 144 transitions, 1148 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:32,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:32,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:32,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:40,883 INFO L124 PetriNetUnfolderBase]: 6343/10840 cut-off events. [2025-02-06 04:47:40,884 INFO L125 PetriNetUnfolderBase]: For 1486162/1486162 co-relation queries the response was YES. [2025-02-06 04:47:40,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45728 conditions, 10840 events. 6343/10840 cut-off events. For 1486162/1486162 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 52581 event pairs, 1393 based on Foata normal form. 1344/12184 useless extension candidates. Maximal degree in co-relation 45598. Up to 3612 conditions per place. [2025-02-06 04:47:40,982 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1501 selfloop transitions, 100 changer transitions 15/1622 dead transitions. [2025-02-06 04:47:40,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 1622 transitions, 13341 flow [2025-02-06 04:47:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-02-06 04:47:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-02-06 04:47:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1439 transitions. [2025-02-06 04:47:40,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4845117845117845 [2025-02-06 04:47:40,985 INFO L175 Difference]: Start difference. First operand has 303 places, 144 transitions, 1148 flow. Second operand 99 states and 1439 transitions. [2025-02-06 04:47:40,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 1622 transitions, 13341 flow [2025-02-06 04:47:41,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1622 transitions, 13037 flow, removed 121 selfloop flow, removed 26 redundant places. [2025-02-06 04:47:41,338 INFO L231 Difference]: Finished difference. Result has 423 places, 192 transitions, 1724 flow [2025-02-06 04:47:41,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=1724, PETRI_PLACES=423, PETRI_TRANSITIONS=192} [2025-02-06 04:47:41,339 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2025-02-06 04:47:41,339 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 192 transitions, 1724 flow [2025-02-06 04:47:41,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:41,339 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:41,340 INFO L206 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:41,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 04:47:41,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:41,540 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:41,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash 134436830, now seen corresponding path program 5 times [2025-02-06 04:47:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17233439] [2025-02-06 04:47:41,541 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:47:41,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:41,547 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-02-06 04:47:41,563 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 04:47:41,563 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 04:47:41,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:42,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:47:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17233439] [2025-02-06 04:47:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17233439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:47:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267069274] [2025-02-06 04:47:42,906 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:47:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:42,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:47:42,908 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:47:42,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 04:47:42,947 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 58 statements into 24 equivalence classes. [2025-02-06 04:47:42,971 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 04:47:42,971 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-06 04:47:42,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:47:42,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-06 04:47:42,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:47:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:44,025 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:47:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:47:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267069274] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:47:46,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:47:46,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 148 [2025-02-06 04:47:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225860096] [2025-02-06 04:47:46,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:47:46,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-02-06 04:47:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:47:46,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-02-06 04:47:46,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9087, Invalid=12965, Unknown=0, NotChecked=0, Total=22052 [2025-02-06 04:47:46,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:47:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 192 transitions, 1724 flow. Second operand has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:47:46,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:47:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:47:56,879 INFO L124 PetriNetUnfolderBase]: 8407/14298 cut-off events. [2025-02-06 04:47:56,879 INFO L125 PetriNetUnfolderBase]: For 1637099/1637099 co-relation queries the response was YES. [2025-02-06 04:47:57,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62143 conditions, 14298 events. 8407/14298 cut-off events. For 1637099/1637099 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 72402 event pairs, 2565 based on Foata normal form. 1392/15690 useless extension candidates. Maximal degree in co-relation 61965. Up to 6876 conditions per place. [2025-02-06 04:47:57,045 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 1647 selfloop transitions, 100 changer transitions 14/1767 dead transitions. [2025-02-06 04:47:57,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1767 transitions, 14218 flow [2025-02-06 04:47:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2025-02-06 04:47:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2025-02-06 04:47:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 1536 transitions. [2025-02-06 04:47:57,048 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5171717171717172 [2025-02-06 04:47:57,048 INFO L175 Difference]: Start difference. First operand has 423 places, 192 transitions, 1724 flow. Second operand 99 states and 1536 transitions. [2025-02-06 04:47:57,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1767 transitions, 14218 flow [2025-02-06 04:47:58,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1767 transitions, 13626 flow, removed 241 selfloop flow, removed 50 redundant places. [2025-02-06 04:47:58,017 INFO L231 Difference]: Finished difference. Result has 519 places, 240 transitions, 2012 flow [2025-02-06 04:47:58,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=2012, PETRI_PLACES=519, PETRI_TRANSITIONS=240} [2025-02-06 04:47:58,018 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 490 predicate places. [2025-02-06 04:47:58,018 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 240 transitions, 2012 flow [2025-02-06 04:47:58,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 9.073825503355705) internal successors, (1352), 149 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:47:58,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:47:58,019 INFO L206 CegarLoopForPetriNet]: trace histogram [94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:47:58,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 04:47:58,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:47:58,220 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-02-06 04:47:58,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:47:58,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1864213224, now seen corresponding path program 6 times [2025-02-06 04:47:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:47:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260589479] [2025-02-06 04:47:58,222 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:47:58,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:47:58,231 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-02-06 04:47:58,272 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 04:47:58,272 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 04:47:58,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:48:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:48:03,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:48:03,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260589479] [2025-02-06 04:48:03,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260589479] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:48:03,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840110409] [2025-02-06 04:48:03,132 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:48:03,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:48:03,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:48:03,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:48:03,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 04:48:03,181 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 106 statements into 48 equivalence classes. [2025-02-06 04:48:03,233 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 106 of 106 statements. [2025-02-06 04:48:03,233 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-06 04:48:03,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:48:03,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-02-06 04:48:03,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:48:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:48:07,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:48:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:48:11,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840110409] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:48:11,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:48:11,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 203 [2025-02-06 04:48:11,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294439900] [2025-02-06 04:48:11,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:48:11,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 204 states [2025-02-06 04:48:11,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:48:11,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2025-02-06 04:48:11,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15147, Invalid=26265, Unknown=0, NotChecked=0, Total=41412 [2025-02-06 04:48:11,212 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2025-02-06 04:48:11,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 240 transitions, 2012 flow. Second operand has 204 states, 204 states have (on average 9.058823529411764) internal successors, (1848), 204 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:48:11,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:48:11,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2025-02-06 04:48:11,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand