./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy11.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:39:10,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:39:10,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:39:10,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:39:10,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:39:10,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:39:10,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:39:10,381 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:39:10,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:39:10,381 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:39:10,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:39:10,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:39:10,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:39:10,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:39:10,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:39:10,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:39:10,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:39:10,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:39:10,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:39:10,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:39:10,385 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/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 -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-03-08 17:39:10,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:39:10,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:39:10,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:39:10,618 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:39:10,618 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:39:10,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-08 17:39:11,808 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d1099ce/c12346c9dbe44722b58cf9b3aa6bc64d/FLAGbbad12abf [2025-03-08 17:39:12,026 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:39:12,028 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-03-08 17:39:12,034 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d1099ce/c12346c9dbe44722b58cf9b3aa6bc64d/FLAGbbad12abf [2025-03-08 17:39:12,385 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93d1099ce/c12346c9dbe44722b58cf9b3aa6bc64d [2025-03-08 17:39:12,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:39:12,388 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:39:12,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:39:12,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:39:12,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:39:12,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38fdd496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12, skipping insertion in model container [2025-03-08 17:39:12,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:39:12,514 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2025-03-08 17:39:12,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:39:12,523 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:39:12,532 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2025-03-08 17:39:12,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:39:12,542 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:39:12,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12 WrapperNode [2025-03-08 17:39:12,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:39:12,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:39:12,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:39:12,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:39:12,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,561 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-03-08 17:39:12,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:39:12,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:39:12,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:39:12,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:39:12,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,577 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]. [2025-03-08 17:39:12,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,583 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,588 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:39:12,589 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:39:12,589 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:39:12,589 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:39:12,590 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (1/1) ... [2025-03-08 17:39:12,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:39:12,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:12,615 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:39:12,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:39:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:39:12,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-08 17:39:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-08 17:39:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-08 17:39:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-08 17:39:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:39:12,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:39:12,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:39:12,634 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:39:12,699 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:39:12,700 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:39:12,804 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:39:12,804 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:39:12,863 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:39:12,863 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:39:12,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:12 BoogieIcfgContainer [2025-03-08 17:39:12,863 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:39:12,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:39:12,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:39:12,870 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:39:12,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:39:12" (1/3) ... [2025-03-08 17:39:12,870 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107cd738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:39:12, skipping insertion in model container [2025-03-08 17:39:12,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:39:12" (2/3) ... [2025-03-08 17:39:12,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107cd738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:39:12, skipping insertion in model container [2025-03-08 17:39:12,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:12" (3/3) ... [2025-03-08 17:39:12,872 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-03-08 17:39:12,884 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:39:12,885 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy11.wvr.c that has 3 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 17:39:12,886 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:39:12,917 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-08 17:39:12,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2025-03-08 17:39:12,966 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-03-08 17:39:12,971 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:39:12,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-03-08 17:39:12,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2025-03-08 17:39:12,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2025-03-08 17:39:12,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:39:12,992 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;@3bf235b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:39:12,992 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-08 17:39:13,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:39:13,000 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-03-08 17:39:13,000 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-08 17:39:13,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:13,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:13,001 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:13,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -317440562, now seen corresponding path program 1 times [2025-03-08 17:39:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:13,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584090649] [2025-03-08 17:39:13,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:13,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:13,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:13,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:13,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:13,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584090649] [2025-03-08 17:39:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584090649] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:13,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:13,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659386851] [2025-03-08 17:39:13,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:13,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:13,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:13,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:13,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:13,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:13,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:13,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:13,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:13,693 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2025-03-08 17:39:13,694 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-03-08 17:39:13,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428 conditions, 201 events. 111/201 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 609 event pairs, 2 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 364. Up to 57 conditions per place. [2025-03-08 17:39:13,698 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2025-03-08 17:39:13,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2025-03-08 17:39:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:13,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-08 17:39:13,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-08 17:39:13,714 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2025-03-08 17:39:13,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2025-03-08 17:39:13,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:13,723 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2025-03-08 17:39:13,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2025-03-08 17:39:13,727 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2025-03-08 17:39:13,728 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2025-03-08 17:39:13,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:13,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:13,728 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:13,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:39:13,728 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:13,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 541205236, now seen corresponding path program 2 times [2025-03-08 17:39:13,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:13,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555970947] [2025-03-08 17:39:13,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:13,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:13,737 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:13,745 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:13,748 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:39:13,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:13,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:13,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555970947] [2025-03-08 17:39:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555970947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:13,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:13,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853936656] [2025-03-08 17:39:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:13,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:13,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:13,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:13,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:13,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:13,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 107 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:13,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:13,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:13,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:14,163 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2025-03-08 17:39:14,164 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2025-03-08 17:39:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 208 events. 114/208 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 610 event pairs, 14 based on Foata normal form. 1/198 useless extension candidates. Maximal degree in co-relation 575. Up to 115 conditions per place. [2025-03-08 17:39:14,165 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2025-03-08 17:39:14,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2025-03-08 17:39:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-03-08 17:39:14,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-03-08 17:39:14,167 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2025-03-08 17:39:14,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2025-03-08 17:39:14,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:14,169 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2025-03-08 17:39:14,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2025-03-08 17:39:14,170 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2025-03-08 17:39:14,170 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2025-03-08 17:39:14,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:14,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:14,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:14,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:39:14,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:14,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:14,171 INFO L85 PathProgramCache]: Analyzing trace with hash -699367322, now seen corresponding path program 3 times [2025-03-08 17:39:14,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433952985] [2025-03-08 17:39:14,171 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:14,177 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:14,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:14,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:39:14,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:14,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433952985] [2025-03-08 17:39:14,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433952985] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:14,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:14,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:14,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850257229] [2025-03-08 17:39:14,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:14,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:14,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:14,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:14,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:14,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 190 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:14,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:14,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:14,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:14,534 INFO L124 PetriNetUnfolderBase]: 119/216 cut-off events. [2025-03-08 17:39:14,534 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2025-03-08 17:39:14,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 216 events. 119/216 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 661 event pairs, 11 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 688. Up to 119 conditions per place. [2025-03-08 17:39:14,536 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 9/67 dead transitions. [2025-03-08 17:39:14,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 450 flow [2025-03-08 17:39:14,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-08 17:39:14,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-08 17:39:14,538 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 86 transitions. [2025-03-08 17:39:14,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 450 flow [2025-03-08 17:39:14,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 418 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:14,541 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 257 flow [2025-03-08 17:39:14,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=257, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2025-03-08 17:39:14,541 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2025-03-08 17:39:14,541 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 257 flow [2025-03-08 17:39:14,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:14,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:14,542 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:14,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:39:14,542 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:14,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:14,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1553897768, now seen corresponding path program 4 times [2025-03-08 17:39:14,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:14,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608990011] [2025-03-08 17:39:14,543 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:14,549 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:14,555 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:14,556 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:14,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:14,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608990011] [2025-03-08 17:39:14,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608990011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:14,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:14,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:14,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706251029] [2025-03-08 17:39:14,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:14,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:14,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:14,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:14,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:14,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:14,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 257 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:14,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:14,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:14,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:14,951 INFO L124 PetriNetUnfolderBase]: 194/329 cut-off events. [2025-03-08 17:39:14,951 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2025-03-08 17:39:14,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1221 conditions, 329 events. 194/329 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1081 event pairs, 35 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 1203. Up to 140 conditions per place. [2025-03-08 17:39:14,958 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 37 changer transitions 8/90 dead transitions. [2025-03-08 17:39:14,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 737 flow [2025-03-08 17:39:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:39:14,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:39:14,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-08 17:39:14,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-08 17:39:14,960 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 257 flow. Second operand 8 states and 90 transitions. [2025-03-08 17:39:14,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 737 flow [2025-03-08 17:39:14,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 661 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:14,966 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 518 flow [2025-03-08 17:39:14,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=518, PETRI_PLACES=53, PETRI_TRANSITIONS=64} [2025-03-08 17:39:14,967 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2025-03-08 17:39:14,968 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 518 flow [2025-03-08 17:39:14,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:14,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:14,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:14,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:39:14,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:14,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 31400426, now seen corresponding path program 5 times [2025-03-08 17:39:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076499965] [2025-03-08 17:39:14,970 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:14,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:14,978 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:14,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:14,980 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:39:14,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:15,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076499965] [2025-03-08 17:39:15,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076499965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:15,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:15,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516481967] [2025-03-08 17:39:15,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:15,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:15,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:15,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 518 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:15,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:15,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:15,270 INFO L124 PetriNetUnfolderBase]: 207/357 cut-off events. [2025-03-08 17:39:15,271 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2025-03-08 17:39:15,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 357 events. 207/357 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1302 event pairs, 16 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1442. Up to 185 conditions per place. [2025-03-08 17:39:15,273 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 53 selfloop transitions, 33 changer transitions 10/97 dead transitions. [2025-03-08 17:39:15,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 859 flow [2025-03-08 17:39:15,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2025-03-08 17:39:15,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-03-08 17:39:15,275 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 518 flow. Second operand 9 states and 90 transitions. [2025-03-08 17:39:15,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 859 flow [2025-03-08 17:39:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 839 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-03-08 17:39:15,280 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 591 flow [2025-03-08 17:39:15,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=591, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2025-03-08 17:39:15,280 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2025-03-08 17:39:15,280 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 591 flow [2025-03-08 17:39:15,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:15,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:15,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:39:15,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:15,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:15,281 INFO L85 PathProgramCache]: Analyzing trace with hash 513661970, now seen corresponding path program 6 times [2025-03-08 17:39:15,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:15,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039593669] [2025-03-08 17:39:15,282 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:15,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:15,286 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:15,288 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,288 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:39:15,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039593669] [2025-03-08 17:39:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039593669] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:15,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:15,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213863186] [2025-03-08 17:39:15,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:15,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:15,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:15,378 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:15,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 591 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:15,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:15,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:15,579 INFO L124 PetriNetUnfolderBase]: 225/385 cut-off events. [2025-03-08 17:39:15,579 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2025-03-08 17:39:15,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 385 events. 225/385 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1404 event pairs, 20 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 1737. Up to 209 conditions per place. [2025-03-08 17:39:15,582 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 51 selfloop transitions, 39 changer transitions 10/101 dead transitions. [2025-03-08 17:39:15,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 1023 flow [2025-03-08 17:39:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:15,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:15,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-03-08 17:39:15,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-08 17:39:15,583 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 591 flow. Second operand 9 states and 87 transitions. [2025-03-08 17:39:15,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 1023 flow [2025-03-08 17:39:15,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 933 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:15,588 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 765 flow [2025-03-08 17:39:15,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=765, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2025-03-08 17:39:15,589 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2025-03-08 17:39:15,589 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 765 flow [2025-03-08 17:39:15,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:15,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:15,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:39:15,590 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:15,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1139291404, now seen corresponding path program 7 times [2025-03-08 17:39:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037640701] [2025-03-08 17:39:15,590 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:15,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:15,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:15,596 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:15,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:15,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037640701] [2025-03-08 17:39:15,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037640701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:15,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:15,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177761218] [2025-03-08 17:39:15,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:15,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:15,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:15,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:15,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:15,863 INFO L124 PetriNetUnfolderBase]: 218/373 cut-off events. [2025-03-08 17:39:15,864 INFO L125 PetriNetUnfolderBase]: For 1416/1416 co-relation queries the response was YES. [2025-03-08 17:39:15,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 373 events. 218/373 cut-off events. For 1416/1416 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1375 event pairs, 15 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1803. Up to 197 conditions per place. [2025-03-08 17:39:15,867 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 56 selfloop transitions, 36 changer transitions 12/105 dead transitions. [2025-03-08 17:39:15,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 1124 flow [2025-03-08 17:39:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-08 17:39:15,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-08 17:39:15,868 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 765 flow. Second operand 9 states and 86 transitions. [2025-03-08 17:39:15,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 1124 flow [2025-03-08 17:39:15,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 1063 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:15,877 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 752 flow [2025-03-08 17:39:15,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=752, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2025-03-08 17:39:15,877 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2025-03-08 17:39:15,877 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 752 flow [2025-03-08 17:39:15,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:15,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:15,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:39:15,878 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:15,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:15,878 INFO L85 PathProgramCache]: Analyzing trace with hash 968494814, now seen corresponding path program 8 times [2025-03-08 17:39:15,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:15,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739266118] [2025-03-08 17:39:15,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:15,882 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:15,883 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:15,883 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:39:15,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:15,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739266118] [2025-03-08 17:39:15,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739266118] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:15,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137823729] [2025-03-08 17:39:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:15,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:15,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:15,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:15,999 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:15,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:15,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:16,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:16,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:16,202 INFO L124 PetriNetUnfolderBase]: 214/366 cut-off events. [2025-03-08 17:39:16,202 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2025-03-08 17:39:16,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1801 conditions, 366 events. 214/366 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1323 event pairs, 17 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1775. Up to 195 conditions per place. [2025-03-08 17:39:16,205 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 50 selfloop transitions, 38 changer transitions 9/98 dead transitions. [2025-03-08 17:39:16,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 1071 flow [2025-03-08 17:39:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-03-08 17:39:16,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-03-08 17:39:16,208 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 752 flow. Second operand 9 states and 87 transitions. [2025-03-08 17:39:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 1071 flow [2025-03-08 17:39:16,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 991 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-08 17:39:16,214 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 798 flow [2025-03-08 17:39:16,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2025-03-08 17:39:16,214 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2025-03-08 17:39:16,215 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 798 flow [2025-03-08 17:39:16,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:16,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:16,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:39:16,215 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:16,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 433265012, now seen corresponding path program 9 times [2025-03-08 17:39:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119934350] [2025-03-08 17:39:16,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:16,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:16,221 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:39:16,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:16,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119934350] [2025-03-08 17:39:16,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119934350] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:16,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:16,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:16,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304368015] [2025-03-08 17:39:16,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:16,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:16,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:16,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:16,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:16,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 798 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:16,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:16,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:16,477 INFO L124 PetriNetUnfolderBase]: 212/364 cut-off events. [2025-03-08 17:39:16,477 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2025-03-08 17:39:16,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1816 conditions, 364 events. 212/364 cut-off events. For 1559/1559 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1322 event pairs, 19 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1787. Up to 193 conditions per place. [2025-03-08 17:39:16,480 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 36 changer transitions 11/97 dead transitions. [2025-03-08 17:39:16,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 1079 flow [2025-03-08 17:39:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-08 17:39:16,481 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-08 17:39:16,481 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 798 flow. Second operand 9 states and 85 transitions. [2025-03-08 17:39:16,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 1079 flow [2025-03-08 17:39:16,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 1005 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:16,486 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 775 flow [2025-03-08 17:39:16,486 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2025-03-08 17:39:16,488 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2025-03-08 17:39:16,488 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 775 flow [2025-03-08 17:39:16,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,488 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:16,488 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:16,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:39:16,489 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:16,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -396266158, now seen corresponding path program 10 times [2025-03-08 17:39:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103111827] [2025-03-08 17:39:16,489 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:16,494 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:16,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:16,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:16,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103111827] [2025-03-08 17:39:16,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103111827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:16,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:16,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732946060] [2025-03-08 17:39:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:16,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:16,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:16,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:16,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:16,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:16,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 775 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:16,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:16,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:16,837 INFO L124 PetriNetUnfolderBase]: 285/475 cut-off events. [2025-03-08 17:39:16,837 INFO L125 PetriNetUnfolderBase]: For 2283/2283 co-relation queries the response was YES. [2025-03-08 17:39:16,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2463 conditions, 475 events. 285/475 cut-off events. For 2283/2283 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1793 event pairs, 42 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 2434. Up to 216 conditions per place. [2025-03-08 17:39:16,841 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 61 selfloop transitions, 52 changer transitions 9/123 dead transitions. [2025-03-08 17:39:16,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 123 transitions, 1448 flow [2025-03-08 17:39:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2025-03-08 17:39:16,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-03-08 17:39:16,842 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 775 flow. Second operand 9 states and 96 transitions. [2025-03-08 17:39:16,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 123 transitions, 1448 flow [2025-03-08 17:39:16,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 123 transitions, 1334 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:16,849 INFO L231 Difference]: Finished difference. Result has 77 places, 95 transitions, 1139 flow [2025-03-08 17:39:16,850 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=77, PETRI_TRANSITIONS=95} [2025-03-08 17:39:16,850 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2025-03-08 17:39:16,850 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 1139 flow [2025-03-08 17:39:16,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:16,850 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:16,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:39:16,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:16,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -9879194, now seen corresponding path program 11 times [2025-03-08 17:39:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:16,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609705450] [2025-03-08 17:39:16,851 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:16,855 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:16,860 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:16,860 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:39:16,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:16,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:16,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609705450] [2025-03-08 17:39:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609705450] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:16,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:16,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:16,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097670030] [2025-03-08 17:39:16,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:16,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:16,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:16,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:16,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:16,967 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:16,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 1139 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:16,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:16,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:16,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:17,164 INFO L124 PetriNetUnfolderBase]: 287/483 cut-off events. [2025-03-08 17:39:17,165 INFO L125 PetriNetUnfolderBase]: For 2524/2524 co-relation queries the response was YES. [2025-03-08 17:39:17,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 483 events. 287/483 cut-off events. For 2524/2524 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1859 event pairs, 29 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 2614. Up to 242 conditions per place. [2025-03-08 17:39:17,169 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 53 selfloop transitions, 50 changer transitions 14/118 dead transitions. [2025-03-08 17:39:17,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1476 flow [2025-03-08 17:39:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:17,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-03-08 17:39:17,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-03-08 17:39:17,170 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 1139 flow. Second operand 9 states and 86 transitions. [2025-03-08 17:39:17,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1476 flow [2025-03-08 17:39:17,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 1416 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:17,180 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 1142 flow [2025-03-08 17:39:17,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1142, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2025-03-08 17:39:17,181 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-03-08 17:39:17,181 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 1142 flow [2025-03-08 17:39:17,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:17,182 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:17,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 17:39:17,183 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:17,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1399138266, now seen corresponding path program 12 times [2025-03-08 17:39:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476121072] [2025-03-08 17:39:17,184 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:17,189 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:17,191 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:17,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-08 17:39:17,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:17,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476121072] [2025-03-08 17:39:17,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476121072] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:17,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:17,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183491072] [2025-03-08 17:39:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:17,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:17,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:17,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:17,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:17,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:17,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 1142 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:17,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:17,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:17,511 INFO L124 PetriNetUnfolderBase]: 301/503 cut-off events. [2025-03-08 17:39:17,512 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2025-03-08 17:39:17,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 503 events. 301/503 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1928 event pairs, 26 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 2667. Up to 248 conditions per place. [2025-03-08 17:39:17,515 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 56 selfloop transitions, 51 changer transitions 11/119 dead transitions. [2025-03-08 17:39:17,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1503 flow [2025-03-08 17:39:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-03-08 17:39:17,517 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-08 17:39:17,517 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 1142 flow. Second operand 9 states and 88 transitions. [2025-03-08 17:39:17,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1503 flow [2025-03-08 17:39:17,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1385 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:17,527 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 1153 flow [2025-03-08 17:39:17,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1153, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2025-03-08 17:39:17,528 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-03-08 17:39:17,529 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 1153 flow [2025-03-08 17:39:17,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:17,529 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:17,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 17:39:17,530 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:17,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1473500810, now seen corresponding path program 13 times [2025-03-08 17:39:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:17,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375554294] [2025-03-08 17:39:17,530 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:17,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:17,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:17,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:17,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375554294] [2025-03-08 17:39:17,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375554294] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:17,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895839150] [2025-03-08 17:39:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:17,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:17,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:17,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:17,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:17,621 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:17,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 1153 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:17,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:17,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:17,790 INFO L124 PetriNetUnfolderBase]: 313/525 cut-off events. [2025-03-08 17:39:17,791 INFO L125 PetriNetUnfolderBase]: For 3341/3341 co-relation queries the response was YES. [2025-03-08 17:39:17,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2919 conditions, 525 events. 313/525 cut-off events. For 3341/3341 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2009 event pairs, 39 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 2885. Up to 272 conditions per place. [2025-03-08 17:39:17,795 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 59 selfloop transitions, 56 changer transitions 11/127 dead transitions. [2025-03-08 17:39:17,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1713 flow [2025-03-08 17:39:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:17,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-03-08 17:39:17,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-03-08 17:39:17,796 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 1153 flow. Second operand 9 states and 85 transitions. [2025-03-08 17:39:17,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1713 flow [2025-03-08 17:39:17,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 1584 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:17,805 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 1386 flow [2025-03-08 17:39:17,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1386, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2025-03-08 17:39:17,806 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2025-03-08 17:39:17,806 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 1386 flow [2025-03-08 17:39:17,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:17,806 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:17,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 17:39:17,806 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:17,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:17,807 INFO L85 PathProgramCache]: Analyzing trace with hash -368722892, now seen corresponding path program 14 times [2025-03-08 17:39:17,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:17,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486132030] [2025-03-08 17:39:17,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:17,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:17,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:17,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:17,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:39:17,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:17,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486132030] [2025-03-08 17:39:17,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486132030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:17,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:17,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989022555] [2025-03-08 17:39:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:17,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:17,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:17,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:17,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:17,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 1386 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:17,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:17,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:17,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,078 INFO L124 PetriNetUnfolderBase]: 321/541 cut-off events. [2025-03-08 17:39:18,078 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2025-03-08 17:39:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3104 conditions, 541 events. 321/541 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2116 event pairs, 39 based on Foata normal form. 1/542 useless extension candidates. Maximal degree in co-relation 3067. Up to 276 conditions per place. [2025-03-08 17:39:18,083 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 69 selfloop transitions, 52 changer transitions 9/131 dead transitions. [2025-03-08 17:39:18,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1836 flow [2025-03-08 17:39:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-03-08 17:39:18,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-08 17:39:18,084 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 1386 flow. Second operand 9 states and 84 transitions. [2025-03-08 17:39:18,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1836 flow [2025-03-08 17:39:18,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1745 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:18,095 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 1449 flow [2025-03-08 17:39:18,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1449, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2025-03-08 17:39:18,096 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-03-08 17:39:18,096 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 1449 flow [2025-03-08 17:39:18,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:18,096 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,096 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 17:39:18,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:18,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2041258070, now seen corresponding path program 15 times [2025-03-08 17:39:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273319232] [2025-03-08 17:39:18,098 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:18,101 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-03-08 17:39:18,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:18,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:39:18,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:18,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273319232] [2025-03-08 17:39:18,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273319232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:18,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:18,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823102015] [2025-03-08 17:39:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:18,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:18,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:18,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:18,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:18,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:18,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:18,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:18,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,377 INFO L124 PetriNetUnfolderBase]: 325/549 cut-off events. [2025-03-08 17:39:18,378 INFO L125 PetriNetUnfolderBase]: For 4058/4058 co-relation queries the response was YES. [2025-03-08 17:39:18,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3189 conditions, 549 events. 325/549 cut-off events. For 4058/4058 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2165 event pairs, 32 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3151. Up to 196 conditions per place. [2025-03-08 17:39:18,381 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 72 selfloop transitions, 51 changer transitions 9/133 dead transitions. [2025-03-08 17:39:18,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1902 flow [2025-03-08 17:39:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2025-03-08 17:39:18,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-03-08 17:39:18,382 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 1449 flow. Second operand 9 states and 81 transitions. [2025-03-08 17:39:18,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1902 flow [2025-03-08 17:39:18,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 1785 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:18,391 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 1460 flow [2025-03-08 17:39:18,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1460, PETRI_PLACES=92, PETRI_TRANSITIONS=108} [2025-03-08 17:39:18,392 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-03-08 17:39:18,392 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 1460 flow [2025-03-08 17:39:18,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:18,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 17:39:18,392 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:18,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2008730612, now seen corresponding path program 16 times [2025-03-08 17:39:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:18,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357833704] [2025-03-08 17:39:18,393 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:18,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:18,396 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-03-08 17:39:18,398 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 17:39:18,398 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:18,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:18,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357833704] [2025-03-08 17:39:18,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357833704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:18,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:18,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:39:18,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549903901] [2025-03-08 17:39:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:18,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:18,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:18,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:39:18,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:18,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 108 transitions, 1460 flow. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:18,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:18,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:18,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,699 INFO L124 PetriNetUnfolderBase]: 344/582 cut-off events. [2025-03-08 17:39:18,700 INFO L125 PetriNetUnfolderBase]: For 4342/4342 co-relation queries the response was YES. [2025-03-08 17:39:18,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3353 conditions, 582 events. 344/582 cut-off events. For 4342/4342 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2350 event pairs, 72 based on Foata normal form. 1/583 useless extension candidates. Maximal degree in co-relation 3315. Up to 277 conditions per place. [2025-03-08 17:39:18,704 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 65 selfloop transitions, 56 changer transitions 13/135 dead transitions. [2025-03-08 17:39:18,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 135 transitions, 1921 flow [2025-03-08 17:39:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:39:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:39:18,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-03-08 17:39:18,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-03-08 17:39:18,705 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 1460 flow. Second operand 8 states and 90 transitions. [2025-03-08 17:39:18,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 135 transitions, 1921 flow [2025-03-08 17:39:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 1778 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:18,715 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 1417 flow [2025-03-08 17:39:18,715 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1417, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2025-03-08 17:39:18,715 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-03-08 17:39:18,715 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 1417 flow [2025-03-08 17:39:18,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 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) [2025-03-08 17:39:18,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 17:39:18,716 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:18,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:18,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1598782571, now seen corresponding path program 1 times [2025-03-08 17:39:18,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:18,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274547828] [2025-03-08 17:39:18,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:18,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:18,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:39:18,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:18,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:18,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274547828] [2025-03-08 17:39:18,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274547828] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325428697] [2025-03-08 17:39:18,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:18,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:18,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:18,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:18,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 17:39:18,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:39:18,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:18,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:18,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:18,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:18,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:18,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325428697] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:18,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:18,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-03-08 17:39:18,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066499949] [2025-03-08 17:39:18,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:18,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:18,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:18,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:18,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:39:18,841 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:18,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 1417 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:18,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:18,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:18,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:18,939 INFO L124 PetriNetUnfolderBase]: 383/661 cut-off events. [2025-03-08 17:39:18,939 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2025-03-08 17:39:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3582 conditions, 661 events. 383/661 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2872 event pairs, 45 based on Foata normal form. 11/672 useless extension candidates. Maximal degree in co-relation 3541. Up to 343 conditions per place. [2025-03-08 17:39:18,944 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 107 selfloop transitions, 31 changer transitions 0/139 dead transitions. [2025-03-08 17:39:18,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 1920 flow [2025-03-08 17:39:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:18,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-03-08 17:39:18,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-03-08 17:39:18,945 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 1417 flow. Second operand 5 states and 64 transitions. [2025-03-08 17:39:18,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 1920 flow [2025-03-08 17:39:18,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1782 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:18,956 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 1431 flow [2025-03-08 17:39:18,956 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1431, PETRI_PLACES=91, PETRI_TRANSITIONS=110} [2025-03-08 17:39:18,957 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-03-08 17:39:18,957 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 1431 flow [2025-03-08 17:39:18,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:18,957 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:18,957 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:18,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:19,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-08 17:39:19,158 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:19,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:19,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1148940206, now seen corresponding path program 1 times [2025-03-08 17:39:19,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:19,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77808782] [2025-03-08 17:39:19,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:19,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:39:19,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:19,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77808782] [2025-03-08 17:39:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77808782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909471136] [2025-03-08 17:39:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:19,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:19,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:19,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:19,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:19,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:19,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 110 transitions, 1431 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:19,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:19,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:19,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:19,320 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2025-03-08 17:39:19,321 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2025-03-08 17:39:19,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 649 events. 371/649 cut-off events. For 5403/5403 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2857 event pairs, 52 based on Foata normal form. 12/661 useless extension candidates. Maximal degree in co-relation 3333. Up to 167 conditions per place. [2025-03-08 17:39:19,325 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 98 selfloop transitions, 37 changer transitions 6/142 dead transitions. [2025-03-08 17:39:19,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1950 flow [2025-03-08 17:39:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:39:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:39:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-03-08 17:39:19,326 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-08 17:39:19,326 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 1431 flow. Second operand 7 states and 77 transitions. [2025-03-08 17:39:19,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1950 flow [2025-03-08 17:39:19,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 1932 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:19,337 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 1565 flow [2025-03-08 17:39:19,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2025-03-08 17:39:19,338 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2025-03-08 17:39:19,338 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 1565 flow [2025-03-08 17:39:19,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:19,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:19,338 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:19,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 17:39:19,338 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:19,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:19,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1183354852, now seen corresponding path program 2 times [2025-03-08 17:39:19,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:19,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414962237] [2025-03-08 17:39:19,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:19,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:19,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,346 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:19,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414962237] [2025-03-08 17:39:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414962237] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287760016] [2025-03-08 17:39:19,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:19,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:19,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 17:39:19,393 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:19,401 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,401 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:19,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:19,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287760016] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:19,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-08 17:39:19,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812060468] [2025-03-08 17:39:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:19,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:19,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:19,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:19,434 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:19,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 111 transitions, 1565 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:19,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:19,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:19,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:19,552 INFO L124 PetriNetUnfolderBase]: 444/787 cut-off events. [2025-03-08 17:39:19,552 INFO L125 PetriNetUnfolderBase]: For 7746/7746 co-relation queries the response was YES. [2025-03-08 17:39:19,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 787 events. 444/787 cut-off events. For 7746/7746 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3612 event pairs, 91 based on Foata normal form. 8/795 useless extension candidates. Maximal degree in co-relation 3877. Up to 306 conditions per place. [2025-03-08 17:39:19,558 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 128 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2025-03-08 17:39:19,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 2384 flow [2025-03-08 17:39:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-03-08 17:39:19,559 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2025-03-08 17:39:19,559 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 1565 flow. Second operand 6 states and 86 transitions. [2025-03-08 17:39:19,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 2384 flow [2025-03-08 17:39:19,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 2192 flow, removed 50 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:19,573 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 1663 flow [2025-03-08 17:39:19,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1663, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2025-03-08 17:39:19,573 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2025-03-08 17:39:19,573 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 1663 flow [2025-03-08 17:39:19,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:19,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:19,574 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:19,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:19,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,778 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:19,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash 173623545, now seen corresponding path program 2 times [2025-03-08 17:39:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:19,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709083570] [2025-03-08 17:39:19,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:19,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:19,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:19,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709083570] [2025-03-08 17:39:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709083570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894952375] [2025-03-08 17:39:19,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:19,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:19,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:19,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 17:39:19,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:19,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:19,840 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:19,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:19,840 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:19,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,848 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894952375] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-08 17:39:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062488076] [2025-03-08 17:39:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:19,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:19,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:19,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:19,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:19,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 1663 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:19,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:19,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:19,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,002 INFO L124 PetriNetUnfolderBase]: 558/1011 cut-off events. [2025-03-08 17:39:20,002 INFO L125 PetriNetUnfolderBase]: For 8665/8665 co-relation queries the response was YES. [2025-03-08 17:39:20,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5627 conditions, 1011 events. 558/1011 cut-off events. For 8665/8665 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5059 event pairs, 52 based on Foata normal form. 9/1020 useless extension candidates. Maximal degree in co-relation 5503. Up to 508 conditions per place. [2025-03-08 17:39:20,010 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 126 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2025-03-08 17:39:20,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 2494 flow [2025-03-08 17:39:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:20,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:20,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2025-03-08 17:39:20,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2025-03-08 17:39:20,011 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 1663 flow. Second operand 5 states and 68 transitions. [2025-03-08 17:39:20,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 2494 flow [2025-03-08 17:39:20,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 2414 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:20,030 INFO L231 Difference]: Finished difference. Result has 107 places, 129 transitions, 1909 flow [2025-03-08 17:39:20,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1909, PETRI_PLACES=107, PETRI_TRANSITIONS=129} [2025-03-08 17:39:20,030 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 83 predicate places. [2025-03-08 17:39:20,030 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 129 transitions, 1909 flow [2025-03-08 17:39:20,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:20,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:20,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 17:39:20,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:20,235 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:20,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 360629290, now seen corresponding path program 3 times [2025-03-08 17:39:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181956380] [2025-03-08 17:39:20,236 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:20,238 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:20,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:20,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:20,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:20,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181956380] [2025-03-08 17:39:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181956380] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368994910] [2025-03-08 17:39:20,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:20,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:20,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:20,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:20,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:20,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:20,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 129 transitions, 1909 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:20,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:20,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,421 INFO L124 PetriNetUnfolderBase]: 504/916 cut-off events. [2025-03-08 17:39:20,422 INFO L125 PetriNetUnfolderBase]: For 9271/9271 co-relation queries the response was YES. [2025-03-08 17:39:20,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5436 conditions, 916 events. 504/916 cut-off events. For 9271/9271 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4431 event pairs, 73 based on Foata normal form. 7/923 useless extension candidates. Maximal degree in co-relation 5289. Up to 226 conditions per place. [2025-03-08 17:39:20,432 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 129 selfloop transitions, 36 changer transitions 5/171 dead transitions. [2025-03-08 17:39:20,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 2552 flow [2025-03-08 17:39:20,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:39:20,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:39:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2025-03-08 17:39:20,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2025-03-08 17:39:20,434 INFO L175 Difference]: Start difference. First operand has 107 places, 129 transitions, 1909 flow. Second operand 8 states and 93 transitions. [2025-03-08 17:39:20,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 2552 flow [2025-03-08 17:39:20,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 171 transitions, 2510 flow, removed 17 selfloop flow, removed 2 redundant places. [2025-03-08 17:39:20,455 INFO L231 Difference]: Finished difference. Result has 112 places, 122 transitions, 1843 flow [2025-03-08 17:39:20,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1843, PETRI_PLACES=112, PETRI_TRANSITIONS=122} [2025-03-08 17:39:20,455 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2025-03-08 17:39:20,455 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 122 transitions, 1843 flow [2025-03-08 17:39:20,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:20,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:20,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 17:39:20,456 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:20,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash 529713679, now seen corresponding path program 3 times [2025-03-08 17:39:20,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:20,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45920912] [2025-03-08 17:39:20,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:20,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:20,460 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:20,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:20,463 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:20,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:20,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45920912] [2025-03-08 17:39:20,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45920912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:20,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:20,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:20,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618477760] [2025-03-08 17:39:20,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:20,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:20,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:20,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:20,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:20,485 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:20,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 122 transitions, 1843 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:20,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:20,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,622 INFO L124 PetriNetUnfolderBase]: 465/840 cut-off events. [2025-03-08 17:39:20,622 INFO L125 PetriNetUnfolderBase]: For 8455/8455 co-relation queries the response was YES. [2025-03-08 17:39:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 840 events. 465/840 cut-off events. For 8455/8455 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3959 event pairs, 40 based on Foata normal form. 6/846 useless extension candidates. Maximal degree in co-relation 4336. Up to 324 conditions per place. [2025-03-08 17:39:20,630 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 119 selfloop transitions, 32 changer transitions 2/154 dead transitions. [2025-03-08 17:39:20,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 2466 flow [2025-03-08 17:39:20,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:20,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2025-03-08 17:39:20,631 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2025-03-08 17:39:20,631 INFO L175 Difference]: Start difference. First operand has 112 places, 122 transitions, 1843 flow. Second operand 6 states and 68 transitions. [2025-03-08 17:39:20,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 2466 flow [2025-03-08 17:39:20,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 2382 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:20,650 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 1790 flow [2025-03-08 17:39:20,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1790, PETRI_PLACES=114, PETRI_TRANSITIONS=119} [2025-03-08 17:39:20,651 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2025-03-08 17:39:20,651 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 1790 flow [2025-03-08 17:39:20,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:20,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:20,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 17:39:20,652 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:20,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 97683250, now seen corresponding path program 4 times [2025-03-08 17:39:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506199647] [2025-03-08 17:39:20,652 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:20,656 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:20,659 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:20,659 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:20,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506199647] [2025-03-08 17:39:20,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506199647] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:20,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453616726] [2025-03-08 17:39:20,679 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:20,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:20,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:20,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:20,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 17:39:20,707 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:20,715 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:20,716 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:20,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:20,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:20,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,731 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:20,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453616726] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:20,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:20,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-08 17:39:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527463863] [2025-03-08 17:39:20,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:20,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:20,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:20,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:20,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:20,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:20,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 119 transitions, 1790 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:20,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:20,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:20,898 INFO L124 PetriNetUnfolderBase]: 515/936 cut-off events. [2025-03-08 17:39:20,898 INFO L125 PetriNetUnfolderBase]: For 10439/10439 co-relation queries the response was YES. [2025-03-08 17:39:20,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 936 events. 515/936 cut-off events. For 10439/10439 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4538 event pairs, 73 based on Foata normal form. 14/950 useless extension candidates. Maximal degree in co-relation 4520. Up to 503 conditions per place. [2025-03-08 17:39:20,903 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 103 selfloop transitions, 37 changer transitions 5/146 dead transitions. [2025-03-08 17:39:20,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 146 transitions, 2398 flow [2025-03-08 17:39:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-03-08 17:39:20,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-03-08 17:39:20,905 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 1790 flow. Second operand 5 states and 60 transitions. [2025-03-08 17:39:20,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 146 transitions, 2398 flow [2025-03-08 17:39:20,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 2325 flow, removed 27 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:20,921 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 1851 flow [2025-03-08 17:39:20,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1851, PETRI_PLACES=115, PETRI_TRANSITIONS=116} [2025-03-08 17:39:20,921 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 91 predicate places. [2025-03-08 17:39:20,921 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 1851 flow [2025-03-08 17:39:20,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:20,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:20,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:20,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:21,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,122 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:21,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -559664049, now seen corresponding path program 4 times [2025-03-08 17:39:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963683192] [2025-03-08 17:39:21,123 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:21,125 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,127 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,127 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:21,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963683192] [2025-03-08 17:39:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963683192] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842847217] [2025-03-08 17:39:21,148 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:21,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:21,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 17:39:21,174 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,182 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,183 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:21,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:21,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842847217] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:21,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-03-08 17:39:21,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029146432] [2025-03-08 17:39:21,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:21,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:21,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:21,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:21,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-03-08 17:39:21,227 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:21,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 116 transitions, 1851 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:21,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:21,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:21,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:21,377 INFO L124 PetriNetUnfolderBase]: 474/861 cut-off events. [2025-03-08 17:39:21,377 INFO L125 PetriNetUnfolderBase]: For 9841/9841 co-relation queries the response was YES. [2025-03-08 17:39:21,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5181 conditions, 861 events. 474/861 cut-off events. For 9841/9841 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4110 event pairs, 110 based on Foata normal form. 9/870 useless extension candidates. Maximal degree in co-relation 4260. Up to 407 conditions per place. [2025-03-08 17:39:21,384 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 112 selfloop transitions, 46 changer transitions 2/161 dead transitions. [2025-03-08 17:39:21,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 161 transitions, 2585 flow [2025-03-08 17:39:21,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:21,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:21,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-03-08 17:39:21,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-03-08 17:39:21,385 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 1851 flow. Second operand 6 states and 82 transitions. [2025-03-08 17:39:21,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 161 transitions, 2585 flow [2025-03-08 17:39:21,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 2521 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:21,402 INFO L231 Difference]: Finished difference. Result has 118 places, 119 transitions, 1995 flow [2025-03-08 17:39:21,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1995, PETRI_PLACES=118, PETRI_TRANSITIONS=119} [2025-03-08 17:39:21,402 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 94 predicate places. [2025-03-08 17:39:21,402 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 119 transitions, 1995 flow [2025-03-08 17:39:21,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:21,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:21,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:21,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 17:39:21,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-08 17:39:21,603 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:21,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:21,604 INFO L85 PathProgramCache]: Analyzing trace with hash -69009956, now seen corresponding path program 5 times [2025-03-08 17:39:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:21,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843822185] [2025-03-08 17:39:21,604 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:21,607 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,608 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,608 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:21,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843822185] [2025-03-08 17:39:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843822185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722423755] [2025-03-08 17:39:21,625 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:21,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:21,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 17:39:21,649 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:21,657 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:21,658 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:21,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:21,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 17:39:21,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722423755] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-08 17:39:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-03-08 17:39:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397175821] [2025-03-08 17:39:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:21,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:21,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:21,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:39:21,686 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:21,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 119 transitions, 1995 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:21,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:21,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:21,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:21,807 INFO L124 PetriNetUnfolderBase]: 434/790 cut-off events. [2025-03-08 17:39:21,807 INFO L125 PetriNetUnfolderBase]: For 9732/9732 co-relation queries the response was YES. [2025-03-08 17:39:21,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4906 conditions, 790 events. 434/790 cut-off events. For 9732/9732 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3681 event pairs, 50 based on Foata normal form. 8/798 useless extension candidates. Maximal degree in co-relation 4363. Up to 388 conditions per place. [2025-03-08 17:39:21,812 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 109 selfloop transitions, 37 changer transitions 2/149 dead transitions. [2025-03-08 17:39:21,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 149 transitions, 2508 flow [2025-03-08 17:39:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:39:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:39:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-03-08 17:39:21,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-03-08 17:39:21,814 INFO L175 Difference]: Start difference. First operand has 118 places, 119 transitions, 1995 flow. Second operand 5 states and 65 transitions. [2025-03-08 17:39:21,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 149 transitions, 2508 flow [2025-03-08 17:39:21,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 2342 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:21,833 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 1876 flow [2025-03-08 17:39:21,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1876, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2025-03-08 17:39:21,834 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-08 17:39:21,834 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 1876 flow [2025-03-08 17:39:21,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:21,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:21,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:21,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:22,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:22,035 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:22,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:22,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1839973202, now seen corresponding path program 6 times [2025-03-08 17:39:22,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:22,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860852910] [2025-03-08 17:39:22,035 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:22,038 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:22,039 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:22,039 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:22,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860852910] [2025-03-08 17:39:22,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860852910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617232952] [2025-03-08 17:39:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:22,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:22,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:22,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:22,062 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:22,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 1876 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:22,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:22,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:22,174 INFO L124 PetriNetUnfolderBase]: 378/687 cut-off events. [2025-03-08 17:39:22,174 INFO L125 PetriNetUnfolderBase]: For 7857/7857 co-relation queries the response was YES. [2025-03-08 17:39:22,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 687 events. 378/687 cut-off events. For 7857/7857 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3067 event pairs, 33 based on Foata normal form. 7/694 useless extension candidates. Maximal degree in co-relation 3914. Up to 284 conditions per place. [2025-03-08 17:39:22,181 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 108 selfloop transitions, 26 changer transitions 3/138 dead transitions. [2025-03-08 17:39:22,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 2297 flow [2025-03-08 17:39:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:39:22,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:39:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2025-03-08 17:39:22,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2025-03-08 17:39:22,182 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 1876 flow. Second operand 6 states and 67 transitions. [2025-03-08 17:39:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 2297 flow [2025-03-08 17:39:22,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 2222 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:22,211 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 1704 flow [2025-03-08 17:39:22,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1704, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2025-03-08 17:39:22,213 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-08 17:39:22,213 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1704 flow [2025-03-08 17:39:22,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:22,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:22,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 17:39:22,213 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:22,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:22,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1216446581, now seen corresponding path program 5 times [2025-03-08 17:39:22,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625127808] [2025-03-08 17:39:22,214 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:22,217 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:22,218 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:22,219 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:22,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625127808] [2025-03-08 17:39:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625127808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:22,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:22,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761282795] [2025-03-08 17:39:22,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:22,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:22,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:22,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:22,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:22,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:22,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 1704 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:22,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:22,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:22,350 INFO L124 PetriNetUnfolderBase]: 360/657 cut-off events. [2025-03-08 17:39:22,350 INFO L125 PetriNetUnfolderBase]: For 7572/7572 co-relation queries the response was YES. [2025-03-08 17:39:22,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4116 conditions, 657 events. 360/657 cut-off events. For 7572/7572 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2922 event pairs, 70 based on Foata normal form. 10/667 useless extension candidates. Maximal degree in co-relation 3645. Up to 248 conditions per place. [2025-03-08 17:39:22,355 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 89 selfloop transitions, 33 changer transitions 5/128 dead transitions. [2025-03-08 17:39:22,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 128 transitions, 2085 flow [2025-03-08 17:39:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:39:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:39:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2025-03-08 17:39:22,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2025-03-08 17:39:22,356 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 1704 flow. Second operand 7 states and 73 transitions. [2025-03-08 17:39:22,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 128 transitions, 2085 flow [2025-03-08 17:39:22,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 128 transitions, 1987 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:22,369 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 1591 flow [2025-03-08 17:39:22,369 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1563, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1591, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2025-03-08 17:39:22,370 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-03-08 17:39:22,370 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 1591 flow [2025-03-08 17:39:22,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,370 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:22,370 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:22,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-08 17:39:22,370 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:22,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1582714951, now seen corresponding path program 6 times [2025-03-08 17:39:22,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:22,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65642149] [2025-03-08 17:39:22,371 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:22,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:22,373 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-03-08 17:39:22,375 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:39:22,375 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:22,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:22,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65642149] [2025-03-08 17:39:22,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65642149] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:22,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:39:22,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:39:22,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550600594] [2025-03-08 17:39:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:22,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:39:22,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:22,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:39:22,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:39:22,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 1591 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:22,521 INFO L124 PetriNetUnfolderBase]: 302/545 cut-off events. [2025-03-08 17:39:22,521 INFO L125 PetriNetUnfolderBase]: For 6358/6358 co-relation queries the response was YES. [2025-03-08 17:39:22,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 545 events. 302/545 cut-off events. For 6358/6358 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2246 event pairs, 56 based on Foata normal form. 6/551 useless extension candidates. Maximal degree in co-relation 3346. Up to 192 conditions per place. [2025-03-08 17:39:22,524 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 87 selfloop transitions, 33 changer transitions 3/124 dead transitions. [2025-03-08 17:39:22,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1953 flow [2025-03-08 17:39:22,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:39:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:39:22,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2025-03-08 17:39:22,525 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2025-03-08 17:39:22,525 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 1591 flow. Second operand 8 states and 83 transitions. [2025-03-08 17:39:22,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1953 flow [2025-03-08 17:39:22,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 1879 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-03-08 17:39:22,536 INFO L231 Difference]: Finished difference. Result has 122 places, 92 transitions, 1436 flow [2025-03-08 17:39:22,536 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=122, PETRI_TRANSITIONS=92} [2025-03-08 17:39:22,540 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2025-03-08 17:39:22,541 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 92 transitions, 1436 flow [2025-03-08 17:39:22,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2025-03-08 17:39:22,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:22,541 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:22,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 17:39:22,541 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:22,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1224817727, now seen corresponding path program 1 times [2025-03-08 17:39:22,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:22,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610571292] [2025-03-08 17:39:22,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:22,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:22,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:22,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:22,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:22,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610571292] [2025-03-08 17:39:22,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610571292] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:22,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542814110] [2025-03-08 17:39:22,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:39:22,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:22,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:22,631 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:22,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 17:39:22,656 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:22,664 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:22,664 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:22,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:22,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:22,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:22,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542814110] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:22,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:22,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:22,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867985961] [2025-03-08 17:39:22,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:22,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:22,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:22,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:23,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:23,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 92 transitions, 1436 flow. Second operand has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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) [2025-03-08 17:39:23,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:23,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:23,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:23,999 INFO L124 PetriNetUnfolderBase]: 694/1300 cut-off events. [2025-03-08 17:39:23,999 INFO L125 PetriNetUnfolderBase]: For 13324/13324 co-relation queries the response was YES. [2025-03-08 17:39:24,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7405 conditions, 1300 events. 694/1300 cut-off events. For 13324/13324 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6985 event pairs, 29 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 4069. Up to 242 conditions per place. [2025-03-08 17:39:24,009 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 129 selfloop transitions, 87 changer transitions 68/285 dead transitions. [2025-03-08 17:39:24,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 285 transitions, 3898 flow [2025-03-08 17:39:24,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-03-08 17:39:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-03-08 17:39:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2025-03-08 17:39:24,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2025-03-08 17:39:24,010 INFO L175 Difference]: Start difference. First operand has 122 places, 92 transitions, 1436 flow. Second operand 36 states and 310 transitions. [2025-03-08 17:39:24,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 285 transitions, 3898 flow [2025-03-08 17:39:24,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 285 transitions, 3620 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-03-08 17:39:24,027 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 2254 flow [2025-03-08 17:39:24,027 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2254, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2025-03-08 17:39:24,027 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2025-03-08 17:39:24,028 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 2254 flow [2025-03-08 17:39:24,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.695652173913044) internal successors, (108), 23 states have internal predecessors, (108), 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) [2025-03-08 17:39:24,028 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:24,028 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:24,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:24,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:24,232 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:24,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash 277842129, now seen corresponding path program 2 times [2025-03-08 17:39:24,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:24,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392529519] [2025-03-08 17:39:24,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:24,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:24,236 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:24,238 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:24,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:24,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:24,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:24,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:24,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392529519] [2025-03-08 17:39:24,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392529519] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:24,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148069631] [2025-03-08 17:39:24,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:24,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:24,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:24,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:24,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 17:39:24,351 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:24,359 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:24,359 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:24,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:24,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:24,360 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:24,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148069631] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:24,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46667110] [2025-03-08 17:39:24,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:24,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:24,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:24,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:24,632 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:24,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 2254 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:24,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:24,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:24,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:25,019 INFO L124 PetriNetUnfolderBase]: 751/1463 cut-off events. [2025-03-08 17:39:25,019 INFO L125 PetriNetUnfolderBase]: For 17119/17119 co-relation queries the response was YES. [2025-03-08 17:39:25,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8415 conditions, 1463 events. 751/1463 cut-off events. For 17119/17119 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8399 event pairs, 98 based on Foata normal form. 3/1466 useless extension candidates. Maximal degree in co-relation 8273. Up to 594 conditions per place. [2025-03-08 17:39:25,029 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 102 selfloop transitions, 99 changer transitions 12/214 dead transitions. [2025-03-08 17:39:25,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 214 transitions, 3743 flow [2025-03-08 17:39:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-03-08 17:39:25,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-03-08 17:39:25,030 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 2254 flow. Second operand 13 states and 121 transitions. [2025-03-08 17:39:25,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 214 transitions, 3743 flow [2025-03-08 17:39:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 214 transitions, 2921 flow, removed 240 selfloop flow, removed 17 redundant places. [2025-03-08 17:39:25,063 INFO L231 Difference]: Finished difference. Result has 147 places, 161 transitions, 2350 flow [2025-03-08 17:39:25,063 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2350, PETRI_PLACES=147, PETRI_TRANSITIONS=161} [2025-03-08 17:39:25,063 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 123 predicate places. [2025-03-08 17:39:25,064 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 161 transitions, 2350 flow [2025-03-08 17:39:25,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:25,064 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:25,064 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:25,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 17:39:25,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:25,264 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:25,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:25,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1782706343, now seen corresponding path program 3 times [2025-03-08 17:39:25,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:25,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011710805] [2025-03-08 17:39:25,266 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:25,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:25,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:25,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:25,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:25,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:25,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011710805] [2025-03-08 17:39:25,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011710805] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376626619] [2025-03-08 17:39:25,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:25,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:25,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:25,359 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:25,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 17:39:25,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:25,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:25,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:25,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:25,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:25,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:25,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:25,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:25,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376626619] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:25,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:25,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:25,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363585298] [2025-03-08 17:39:25,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:25,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:25,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:25,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:25,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:25,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:25,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 161 transitions, 2350 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:25,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:25,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:25,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:26,173 INFO L124 PetriNetUnfolderBase]: 896/1776 cut-off events. [2025-03-08 17:39:26,173 INFO L125 PetriNetUnfolderBase]: For 16568/16568 co-relation queries the response was YES. [2025-03-08 17:39:26,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9006 conditions, 1776 events. 896/1776 cut-off events. For 16568/16568 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10975 event pairs, 106 based on Foata normal form. 4/1780 useless extension candidates. Maximal degree in co-relation 8861. Up to 556 conditions per place. [2025-03-08 17:39:26,185 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 86 selfloop transitions, 153 changer transitions 12/252 dead transitions. [2025-03-08 17:39:26,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 252 transitions, 3900 flow [2025-03-08 17:39:26,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 17:39:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-08 17:39:26,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-03-08 17:39:26,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-03-08 17:39:26,186 INFO L175 Difference]: Start difference. First operand has 147 places, 161 transitions, 2350 flow. Second operand 17 states and 147 transitions. [2025-03-08 17:39:26,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 252 transitions, 3900 flow [2025-03-08 17:39:26,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 252 transitions, 3767 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:26,222 INFO L231 Difference]: Finished difference. Result has 164 places, 205 transitions, 3435 flow [2025-03-08 17:39:26,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3435, PETRI_PLACES=164, PETRI_TRANSITIONS=205} [2025-03-08 17:39:26,222 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 140 predicate places. [2025-03-08 17:39:26,222 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 205 transitions, 3435 flow [2025-03-08 17:39:26,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:26,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:26,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:26,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-08 17:39:26,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:26,423 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:26,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 477455249, now seen corresponding path program 4 times [2025-03-08 17:39:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:26,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467687531] [2025-03-08 17:39:26,424 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:26,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:26,426 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:26,427 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:26,428 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:26,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467687531] [2025-03-08 17:39:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467687531] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788952336] [2025-03-08 17:39:26,538 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:26,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:26,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:26,540 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:26,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 17:39:26,573 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:26,581 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:26,582 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:26,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:26,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:26,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:26,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:26,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788952336] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:26,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:26,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-08 17:39:26,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265426446] [2025-03-08 17:39:26,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:26,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 17:39:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:26,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 17:39:26,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2025-03-08 17:39:26,840 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:26,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 205 transitions, 3435 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:26,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:26,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:27,279 INFO L124 PetriNetUnfolderBase]: 874/1728 cut-off events. [2025-03-08 17:39:27,279 INFO L125 PetriNetUnfolderBase]: For 19443/19443 co-relation queries the response was YES. [2025-03-08 17:39:27,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9770 conditions, 1728 events. 874/1728 cut-off events. For 19443/19443 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10565 event pairs, 94 based on Foata normal form. 4/1732 useless extension candidates. Maximal degree in co-relation 9627. Up to 600 conditions per place. [2025-03-08 17:39:27,288 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 146 changer transitions 17/252 dead transitions. [2025-03-08 17:39:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 252 transitions, 4275 flow [2025-03-08 17:39:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 17:39:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-08 17:39:27,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-03-08 17:39:27,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-03-08 17:39:27,290 INFO L175 Difference]: Start difference. First operand has 164 places, 205 transitions, 3435 flow. Second operand 17 states and 147 transitions. [2025-03-08 17:39:27,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 252 transitions, 4275 flow [2025-03-08 17:39:27,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 252 transitions, 4056 flow, removed 89 selfloop flow, removed 4 redundant places. [2025-03-08 17:39:27,354 INFO L231 Difference]: Finished difference. Result has 177 places, 202 transitions, 3462 flow [2025-03-08 17:39:27,355 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3462, PETRI_PLACES=177, PETRI_TRANSITIONS=202} [2025-03-08 17:39:27,355 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 153 predicate places. [2025-03-08 17:39:27,355 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 202 transitions, 3462 flow [2025-03-08 17:39:27,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:27,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:27,355 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:27,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:27,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-03-08 17:39:27,556 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:27,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1772885901, now seen corresponding path program 5 times [2025-03-08 17:39:27,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:27,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132714075] [2025-03-08 17:39:27,556 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:27,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:27,558 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:27,560 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:27,560 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:27,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:27,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132714075] [2025-03-08 17:39:27,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132714075] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:27,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922228666] [2025-03-08 17:39:27,617 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:27,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:27,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:27,619 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:27,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-08 17:39:27,640 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:27,648 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:27,649 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:27,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:27,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 17:39:27,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:27,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922228666] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-08 17:39:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538603020] [2025-03-08 17:39:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:27,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:27,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:27,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:39:27,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:27,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 202 transitions, 3462 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:27,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:27,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:27,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:27,908 INFO L124 PetriNetUnfolderBase]: 802/1568 cut-off events. [2025-03-08 17:39:27,908 INFO L125 PetriNetUnfolderBase]: For 19428/19428 co-relation queries the response was YES. [2025-03-08 17:39:27,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9400 conditions, 1568 events. 802/1568 cut-off events. For 19428/19428 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9129 event pairs, 158 based on Foata normal form. 2/1570 useless extension candidates. Maximal degree in co-relation 9277. Up to 998 conditions per place. [2025-03-08 17:39:27,919 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 124 selfloop transitions, 63 changer transitions 45/233 dead transitions. [2025-03-08 17:39:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 233 transitions, 4278 flow [2025-03-08 17:39:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-03-08 17:39:27,920 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-03-08 17:39:27,920 INFO L175 Difference]: Start difference. First operand has 177 places, 202 transitions, 3462 flow. Second operand 9 states and 83 transitions. [2025-03-08 17:39:27,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 233 transitions, 4278 flow [2025-03-08 17:39:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 233 transitions, 4016 flow, removed 8 selfloop flow, removed 14 redundant places. [2025-03-08 17:39:27,970 INFO L231 Difference]: Finished difference. Result has 171 places, 175 transitions, 2851 flow [2025-03-08 17:39:27,970 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2851, PETRI_PLACES=171, PETRI_TRANSITIONS=175} [2025-03-08 17:39:27,970 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2025-03-08 17:39:27,970 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 175 transitions, 2851 flow [2025-03-08 17:39:27,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:27,970 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:27,971 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:27,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:28,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-08 17:39:28,171 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:28,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash 391749731, now seen corresponding path program 6 times [2025-03-08 17:39:28,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:28,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551886830] [2025-03-08 17:39:28,172 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:28,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:28,174 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:28,175 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:28,175 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:28,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:28,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:28,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551886830] [2025-03-08 17:39:28,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551886830] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:28,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212675857] [2025-03-08 17:39:28,252 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:28,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:28,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:28,254 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:28,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-08 17:39:28,279 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:28,287 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:28,287 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:28,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:28,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:28,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:28,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:28,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:28,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212675857] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:28,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:28,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:28,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137325795] [2025-03-08 17:39:28,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:28,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:28,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:28,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:28,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:28,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:28,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 175 transitions, 2851 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-08 17:39:28,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:28,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:28,834 INFO L124 PetriNetUnfolderBase]: 758/1518 cut-off events. [2025-03-08 17:39:28,834 INFO L125 PetriNetUnfolderBase]: For 16785/16785 co-relation queries the response was YES. [2025-03-08 17:39:28,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8283 conditions, 1518 events. 758/1518 cut-off events. For 16785/16785 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9070 event pairs, 126 based on Foata normal form. 4/1522 useless extension candidates. Maximal degree in co-relation 8145. Up to 776 conditions per place. [2025-03-08 17:39:28,843 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 101 changer transitions 23/216 dead transitions. [2025-03-08 17:39:28,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 216 transitions, 3665 flow [2025-03-08 17:39:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:28,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2025-03-08 17:39:28,844 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-03-08 17:39:28,844 INFO L175 Difference]: Start difference. First operand has 171 places, 175 transitions, 2851 flow. Second operand 12 states and 112 transitions. [2025-03-08 17:39:28,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 216 transitions, 3665 flow [2025-03-08 17:39:28,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 216 transitions, 3367 flow, removed 27 selfloop flow, removed 16 redundant places. [2025-03-08 17:39:28,877 INFO L231 Difference]: Finished difference. Result has 158 places, 163 transitions, 2674 flow [2025-03-08 17:39:28,878 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2674, PETRI_PLACES=158, PETRI_TRANSITIONS=163} [2025-03-08 17:39:28,878 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2025-03-08 17:39:28,878 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 163 transitions, 2674 flow [2025-03-08 17:39:28,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-08 17:39:28,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:28,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:28,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-08 17:39:29,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-03-08 17:39:29,079 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:29,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:29,079 INFO L85 PathProgramCache]: Analyzing trace with hash -660834713, now seen corresponding path program 7 times [2025-03-08 17:39:29,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:29,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865194403] [2025-03-08 17:39:29,079 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:29,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:29,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:29,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:29,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:29,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865194403] [2025-03-08 17:39:29,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865194403] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:29,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685565539] [2025-03-08 17:39:29,154 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:29,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:29,156 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:29,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-08 17:39:29,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:29,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:29,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:29,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:29,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:29,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:29,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:29,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:29,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685565539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:29,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:29,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:29,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492601832] [2025-03-08 17:39:29,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:29,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:29,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:29,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:29,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:29,447 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:29,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 163 transitions, 2674 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:29,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:29,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:29,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:29,796 INFO L124 PetriNetUnfolderBase]: 731/1460 cut-off events. [2025-03-08 17:39:29,797 INFO L125 PetriNetUnfolderBase]: For 15061/15061 co-relation queries the response was YES. [2025-03-08 17:39:29,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8027 conditions, 1460 events. 731/1460 cut-off events. For 15061/15061 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8581 event pairs, 134 based on Foata normal form. 5/1465 useless extension candidates. Maximal degree in co-relation 7901. Up to 816 conditions per place. [2025-03-08 17:39:29,805 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 84 selfloop transitions, 85 changer transitions 26/196 dead transitions. [2025-03-08 17:39:29,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 196 transitions, 3383 flow [2025-03-08 17:39:29,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:29,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2025-03-08 17:39:29,807 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-03-08 17:39:29,807 INFO L175 Difference]: Start difference. First operand has 158 places, 163 transitions, 2674 flow. Second operand 12 states and 104 transitions. [2025-03-08 17:39:29,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 196 transitions, 3383 flow [2025-03-08 17:39:29,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 196 transitions, 3332 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:29,840 INFO L231 Difference]: Finished difference. Result has 163 places, 148 transitions, 2516 flow [2025-03-08 17:39:29,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2516, PETRI_PLACES=163, PETRI_TRANSITIONS=148} [2025-03-08 17:39:29,841 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 139 predicate places. [2025-03-08 17:39:29,841 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 148 transitions, 2516 flow [2025-03-08 17:39:29,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:29,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:29,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:29,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-03-08 17:39:30,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-03-08 17:39:30,042 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:30,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -632085999, now seen corresponding path program 8 times [2025-03-08 17:39:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092735018] [2025-03-08 17:39:30,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:30,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:30,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:30,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:30,051 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:30,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:30,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:30,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092735018] [2025-03-08 17:39:30,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092735018] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:30,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992881006] [2025-03-08 17:39:30,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:30,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:30,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:30,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-08 17:39:30,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:30,173 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:30,173 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:30,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:30,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:30,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:30,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:30,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992881006] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:30,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:30,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781445185] [2025-03-08 17:39:30,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:30,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:30,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:30,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:30,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:30,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 148 transitions, 2516 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:30,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:30,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:30,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:30,691 INFO L124 PetriNetUnfolderBase]: 650/1262 cut-off events. [2025-03-08 17:39:30,691 INFO L125 PetriNetUnfolderBase]: For 14685/14685 co-relation queries the response was YES. [2025-03-08 17:39:30,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 1262 events. 650/1262 cut-off events. For 14685/14685 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6921 event pairs, 63 based on Foata normal form. 7/1269 useless extension candidates. Maximal degree in co-relation 7333. Up to 451 conditions per place. [2025-03-08 17:39:30,698 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 75 selfloop transitions, 62 changer transitions 51/189 dead transitions. [2025-03-08 17:39:30,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 189 transitions, 3274 flow [2025-03-08 17:39:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:30,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 111 transitions. [2025-03-08 17:39:30,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3881118881118881 [2025-03-08 17:39:30,699 INFO L175 Difference]: Start difference. First operand has 163 places, 148 transitions, 2516 flow. Second operand 13 states and 111 transitions. [2025-03-08 17:39:30,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 189 transitions, 3274 flow [2025-03-08 17:39:30,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 189 transitions, 3029 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-03-08 17:39:30,729 INFO L231 Difference]: Finished difference. Result has 159 places, 116 transitions, 1850 flow [2025-03-08 17:39:30,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1850, PETRI_PLACES=159, PETRI_TRANSITIONS=116} [2025-03-08 17:39:30,730 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-03-08 17:39:30,730 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 116 transitions, 1850 flow [2025-03-08 17:39:30,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:30,730 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:30,731 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:30,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:30,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:30,934 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:30,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2056163371, now seen corresponding path program 9 times [2025-03-08 17:39:30,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:30,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570769744] [2025-03-08 17:39:30,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:30,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:30,937 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:30,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:30,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:30,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:31,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570769744] [2025-03-08 17:39:31,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570769744] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:31,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167011426] [2025-03-08 17:39:31,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:31,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:31,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:31,018 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:31,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-03-08 17:39:31,044 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:31,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:31,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:31,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:31,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:31,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:31,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167011426] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:31,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:31,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-08 17:39:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112945843] [2025-03-08 17:39:31,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:31,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 17:39:31,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:31,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 17:39:31,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2025-03-08 17:39:31,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:31,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 116 transitions, 1850 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:31,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:31,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:31,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:32,045 INFO L124 PetriNetUnfolderBase]: 789/1575 cut-off events. [2025-03-08 17:39:32,045 INFO L125 PetriNetUnfolderBase]: For 16612/16612 co-relation queries the response was YES. [2025-03-08 17:39:32,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8800 conditions, 1575 events. 789/1575 cut-off events. For 16612/16612 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9345 event pairs, 113 based on Foata normal form. 17/1592 useless extension candidates. Maximal degree in co-relation 8718. Up to 605 conditions per place. [2025-03-08 17:39:32,053 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 135 selfloop transitions, 134 changer transitions 17/287 dead transitions. [2025-03-08 17:39:32,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 287 transitions, 4532 flow [2025-03-08 17:39:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-08 17:39:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-03-08 17:39:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 268 transitions. [2025-03-08 17:39:32,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3582887700534759 [2025-03-08 17:39:32,054 INFO L175 Difference]: Start difference. First operand has 159 places, 116 transitions, 1850 flow. Second operand 34 states and 268 transitions. [2025-03-08 17:39:32,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 287 transitions, 4532 flow [2025-03-08 17:39:32,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 287 transitions, 4146 flow, removed 24 selfloop flow, removed 19 redundant places. [2025-03-08 17:39:32,085 INFO L231 Difference]: Finished difference. Result has 174 places, 196 transitions, 3338 flow [2025-03-08 17:39:32,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1662, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3338, PETRI_PLACES=174, PETRI_TRANSITIONS=196} [2025-03-08 17:39:32,086 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 150 predicate places. [2025-03-08 17:39:32,086 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 196 transitions, 3338 flow [2025-03-08 17:39:32,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:32,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:32,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:32,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-03-08 17:39:32,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-03-08 17:39:32,287 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:32,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:32,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1374628063, now seen corresponding path program 10 times [2025-03-08 17:39:32,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:32,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102771736] [2025-03-08 17:39:32,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:32,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:32,289 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:32,291 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:32,291 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:32,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:32,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102771736] [2025-03-08 17:39:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102771736] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:32,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426648789] [2025-03-08 17:39:32,359 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:32,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:32,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:32,361 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:32,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-03-08 17:39:32,383 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:32,391 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:32,392 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:32,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:32,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:32,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:32,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426648789] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:32,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945557716] [2025-03-08 17:39:32,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:32,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:32,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:32,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:32,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:32,636 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:32,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 196 transitions, 3338 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:32,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:32,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:32,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:33,073 INFO L124 PetriNetUnfolderBase]: 951/1889 cut-off events. [2025-03-08 17:39:33,073 INFO L125 PetriNetUnfolderBase]: For 21117/21117 co-relation queries the response was YES. [2025-03-08 17:39:33,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10996 conditions, 1889 events. 951/1889 cut-off events. For 21117/21117 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11741 event pairs, 147 based on Foata normal form. 3/1892 useless extension candidates. Maximal degree in co-relation 10851. Up to 936 conditions per place. [2025-03-08 17:39:33,082 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 133 selfloop transitions, 138 changer transitions 24/296 dead transitions. [2025-03-08 17:39:33,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 296 transitions, 5229 flow [2025-03-08 17:39:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 17:39:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-08 17:39:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2025-03-08 17:39:33,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-03-08 17:39:33,082 INFO L175 Difference]: Start difference. First operand has 174 places, 196 transitions, 3338 flow. Second operand 18 states and 154 transitions. [2025-03-08 17:39:33,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 296 transitions, 5229 flow [2025-03-08 17:39:33,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 296 transitions, 4628 flow, removed 234 selfloop flow, removed 12 redundant places. [2025-03-08 17:39:33,130 INFO L231 Difference]: Finished difference. Result has 182 places, 225 transitions, 3772 flow [2025-03-08 17:39:33,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3772, PETRI_PLACES=182, PETRI_TRANSITIONS=225} [2025-03-08 17:39:33,130 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 158 predicate places. [2025-03-08 17:39:33,130 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 225 transitions, 3772 flow [2025-03-08 17:39:33,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:33,130 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:33,130 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:33,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-03-08 17:39:33,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-03-08 17:39:33,331 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:33,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1606474555, now seen corresponding path program 11 times [2025-03-08 17:39:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:33,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009776499] [2025-03-08 17:39:33,332 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:33,334 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:33,335 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:33,335 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:33,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:33,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009776499] [2025-03-08 17:39:33,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009776499] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:33,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197708069] [2025-03-08 17:39:33,386 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:33,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:33,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:33,388 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:33,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-03-08 17:39:33,411 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:33,418 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:33,418 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:33,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:33,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 17:39:33,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:33,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197708069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:33,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:33,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-03-08 17:39:33,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129849622] [2025-03-08 17:39:33,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:33,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:33,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:33,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:33,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:39:33,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:33,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 225 transitions, 3772 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:33,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:33,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:33,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:33,676 INFO L124 PetriNetUnfolderBase]: 906/1797 cut-off events. [2025-03-08 17:39:33,676 INFO L125 PetriNetUnfolderBase]: For 21328/21328 co-relation queries the response was YES. [2025-03-08 17:39:33,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10394 conditions, 1797 events. 906/1797 cut-off events. For 21328/21328 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10987 event pairs, 181 based on Foata normal form. 4/1801 useless extension candidates. Maximal degree in co-relation 10255. Up to 1051 conditions per place. [2025-03-08 17:39:33,708 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 129 selfloop transitions, 65 changer transitions 53/248 dead transitions. [2025-03-08 17:39:33,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 248 transitions, 4429 flow [2025-03-08 17:39:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:33,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:33,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2025-03-08 17:39:33,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2025-03-08 17:39:33,709 INFO L175 Difference]: Start difference. First operand has 182 places, 225 transitions, 3772 flow. Second operand 9 states and 82 transitions. [2025-03-08 17:39:33,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 248 transitions, 4429 flow [2025-03-08 17:39:33,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 248 transitions, 4312 flow, removed 19 selfloop flow, removed 10 redundant places. [2025-03-08 17:39:33,767 INFO L231 Difference]: Finished difference. Result has 181 places, 183 transitions, 3071 flow [2025-03-08 17:39:33,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3659, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3071, PETRI_PLACES=181, PETRI_TRANSITIONS=183} [2025-03-08 17:39:33,768 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2025-03-08 17:39:33,768 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 183 transitions, 3071 flow [2025-03-08 17:39:33,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:33,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:33,768 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:33,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:33,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-03-08 17:39:33,969 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:33,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481725, now seen corresponding path program 12 times [2025-03-08 17:39:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:33,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562602441] [2025-03-08 17:39:33,969 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:33,971 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:33,973 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:33,973 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:33,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:34,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562602441] [2025-03-08 17:39:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562602441] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:34,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40082725] [2025-03-08 17:39:34,049 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:34,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:34,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:34,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:34,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-03-08 17:39:34,074 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:34,081 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:34,081 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:34,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:34,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:34,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:34,138 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40082725] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:34,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:34,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-03-08 17:39:34,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483865363] [2025-03-08 17:39:34,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:34,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 17:39:34,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:34,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 17:39:34,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2025-03-08 17:39:34,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:34,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 183 transitions, 3071 flow. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 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) [2025-03-08 17:39:34,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:34,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:34,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:34,894 INFO L124 PetriNetUnfolderBase]: 784/1599 cut-off events. [2025-03-08 17:39:34,894 INFO L125 PetriNetUnfolderBase]: For 18951/18951 co-relation queries the response was YES. [2025-03-08 17:39:34,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 1599 events. 784/1599 cut-off events. For 18951/18951 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9782 event pairs, 44 based on Foata normal form. 7/1606 useless extension candidates. Maximal degree in co-relation 9121. Up to 514 conditions per place. [2025-03-08 17:39:34,903 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 85 selfloop transitions, 147 changer transitions 28/261 dead transitions. [2025-03-08 17:39:34,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 261 transitions, 4365 flow [2025-03-08 17:39:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-03-08 17:39:34,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-03-08 17:39:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 201 transitions. [2025-03-08 17:39:34,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2025-03-08 17:39:34,904 INFO L175 Difference]: Start difference. First operand has 181 places, 183 transitions, 3071 flow. Second operand 27 states and 201 transitions. [2025-03-08 17:39:34,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 261 transitions, 4365 flow [2025-03-08 17:39:34,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 261 transitions, 4155 flow, removed 18 selfloop flow, removed 13 redundant places. [2025-03-08 17:39:34,949 INFO L231 Difference]: Finished difference. Result has 198 places, 200 transitions, 3676 flow [2025-03-08 17:39:34,949 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2885, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3676, PETRI_PLACES=198, PETRI_TRANSITIONS=200} [2025-03-08 17:39:34,949 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2025-03-08 17:39:34,949 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 200 transitions, 3676 flow [2025-03-08 17:39:34,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 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) [2025-03-08 17:39:34,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:34,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:34,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:35,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-03-08 17:39:35,150 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:35,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:35,150 INFO L85 PathProgramCache]: Analyzing trace with hash -972430153, now seen corresponding path program 13 times [2025-03-08 17:39:35,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361312571] [2025-03-08 17:39:35,151 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:35,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:35,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:35,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:35,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:35,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:35,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361312571] [2025-03-08 17:39:35,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361312571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:35,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821207566] [2025-03-08 17:39:35,226 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:35,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:35,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:35,228 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:35,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-03-08 17:39:35,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:35,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:35,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:35,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:35,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:35,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:35,295 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:35,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821207566] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:35,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:35,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-08 17:39:35,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706850706] [2025-03-08 17:39:35,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:35,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-08 17:39:35,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:35,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-08 17:39:35,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-03-08 17:39:35,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:35,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 200 transitions, 3676 flow. Second operand has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 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) [2025-03-08 17:39:35,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:35,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:35,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:36,018 INFO L124 PetriNetUnfolderBase]: 789/1610 cut-off events. [2025-03-08 17:39:36,018 INFO L125 PetriNetUnfolderBase]: For 23651/23651 co-relation queries the response was YES. [2025-03-08 17:39:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 1610 events. 789/1610 cut-off events. For 23651/23651 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9792 event pairs, 74 based on Foata normal form. 11/1621 useless extension candidates. Maximal degree in co-relation 10003. Up to 482 conditions per place. [2025-03-08 17:39:36,028 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 138 changer transitions 24/255 dead transitions. [2025-03-08 17:39:36,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 255 transitions, 4596 flow [2025-03-08 17:39:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-03-08 17:39:36,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-03-08 17:39:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 187 transitions. [2025-03-08 17:39:36,029 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34 [2025-03-08 17:39:36,029 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 3676 flow. Second operand 25 states and 187 transitions. [2025-03-08 17:39:36,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 255 transitions, 4596 flow [2025-03-08 17:39:36,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 255 transitions, 4475 flow, removed 48 selfloop flow, removed 7 redundant places. [2025-03-08 17:39:36,084 INFO L231 Difference]: Finished difference. Result has 213 places, 197 transitions, 3835 flow [2025-03-08 17:39:36,084 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3552, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3835, PETRI_PLACES=213, PETRI_TRANSITIONS=197} [2025-03-08 17:39:36,084 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 189 predicate places. [2025-03-08 17:39:36,084 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 197 transitions, 3835 flow [2025-03-08 17:39:36,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.526315789473684) internal successors, (86), 19 states have internal predecessors, (86), 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) [2025-03-08 17:39:36,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:36,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:36,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-03-08 17:39:36,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:36,285 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:36,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:36,285 INFO L85 PathProgramCache]: Analyzing trace with hash -29776209, now seen corresponding path program 14 times [2025-03-08 17:39:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:36,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308709267] [2025-03-08 17:39:36,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:36,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:36,287 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:36,289 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:36,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:36,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:36,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:36,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308709267] [2025-03-08 17:39:36,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308709267] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:36,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075512733] [2025-03-08 17:39:36,361 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:36,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:36,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:36,363 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:36,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-03-08 17:39:36,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:36,389 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:36,389 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:36,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:36,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:36,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:36,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:36,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:36,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075512733] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:36,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:36,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-03-08 17:39:36,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009188120] [2025-03-08 17:39:36,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:36,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 17:39:36,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:36,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 17:39:36,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-03-08 17:39:36,585 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:36,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 197 transitions, 3835 flow. Second operand has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 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) [2025-03-08 17:39:36,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:37,078 INFO L124 PetriNetUnfolderBase]: 841/1757 cut-off events. [2025-03-08 17:39:37,078 INFO L125 PetriNetUnfolderBase]: For 25660/25660 co-relation queries the response was YES. [2025-03-08 17:39:37,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11001 conditions, 1757 events. 841/1757 cut-off events. For 25660/25660 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11268 event pairs, 62 based on Foata normal form. 3/1760 useless extension candidates. Maximal degree in co-relation 10942. Up to 548 conditions per place. [2025-03-08 17:39:37,086 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 148 changer transitions 31/271 dead transitions. [2025-03-08 17:39:37,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 5226 flow [2025-03-08 17:39:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-08 17:39:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-08 17:39:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 180 transitions. [2025-03-08 17:39:37,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2025-03-08 17:39:37,087 INFO L175 Difference]: Start difference. First operand has 213 places, 197 transitions, 3835 flow. Second operand 22 states and 180 transitions. [2025-03-08 17:39:37,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 5226 flow [2025-03-08 17:39:37,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 271 transitions, 4972 flow, removed 31 selfloop flow, removed 16 redundant places. [2025-03-08 17:39:37,140 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 4071 flow [2025-03-08 17:39:37,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4071, PETRI_PLACES=214, PETRI_TRANSITIONS=203} [2025-03-08 17:39:37,140 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 190 predicate places. [2025-03-08 17:39:37,140 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 4071 flow [2025-03-08 17:39:37,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.476190476190476) internal successors, (94), 21 states have internal predecessors, (94), 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) [2025-03-08 17:39:37,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:37,140 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:37,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-03-08 17:39:37,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2025-03-08 17:39:37,341 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:37,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:37,341 INFO L85 PathProgramCache]: Analyzing trace with hash 862639675, now seen corresponding path program 15 times [2025-03-08 17:39:37,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:37,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197386785] [2025-03-08 17:39:37,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:37,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:37,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:37,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:37,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:37,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:37,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197386785] [2025-03-08 17:39:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197386785] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816837115] [2025-03-08 17:39:37,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:37,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:37,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:37,427 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:37,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-03-08 17:39:37,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:37,455 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:37,455 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:37,455 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:37,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:37,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:37,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816837115] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:37,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:37,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858807839] [2025-03-08 17:39:37,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:37,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:37,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:37,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:37,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:37,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 203 transitions, 4071 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:37,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:37,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:37,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:37,984 INFO L124 PetriNetUnfolderBase]: 851/1798 cut-off events. [2025-03-08 17:39:37,984 INFO L125 PetriNetUnfolderBase]: For 25749/25749 co-relation queries the response was YES. [2025-03-08 17:39:37,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 1798 events. 851/1798 cut-off events. For 25749/25749 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11761 event pairs, 194 based on Foata normal form. 6/1804 useless extension candidates. Maximal degree in co-relation 11177. Up to 1032 conditions per place. [2025-03-08 17:39:37,994 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 105 selfloop transitions, 88 changer transitions 62/256 dead transitions. [2025-03-08 17:39:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 256 transitions, 5292 flow [2025-03-08 17:39:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2025-03-08 17:39:37,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2025-03-08 17:39:37,995 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 4071 flow. Second operand 13 states and 112 transitions. [2025-03-08 17:39:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 256 transitions, 5292 flow [2025-03-08 17:39:38,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 256 transitions, 4733 flow, removed 60 selfloop flow, removed 16 redundant places. [2025-03-08 17:39:38,054 INFO L231 Difference]: Finished difference. Result has 211 places, 170 transitions, 3294 flow [2025-03-08 17:39:38,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3561, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3294, PETRI_PLACES=211, PETRI_TRANSITIONS=170} [2025-03-08 17:39:38,055 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 187 predicate places. [2025-03-08 17:39:38,055 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 170 transitions, 3294 flow [2025-03-08 17:39:38,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:38,055 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:38,055 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:38,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-03-08 17:39:38,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:38,255 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:38,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1714465127, now seen corresponding path program 16 times [2025-03-08 17:39:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644801907] [2025-03-08 17:39:38,256 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:38,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:38,258 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:38,259 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:38,259 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:38,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644801907] [2025-03-08 17:39:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644801907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:38,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573159658] [2025-03-08 17:39:38,321 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:38,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:38,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:38,323 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-03-08 17:39:38,357 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:38,369 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:38,369 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:38,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:38,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:38,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:38,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:38,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:38,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573159658] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:38,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:38,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064609382] [2025-03-08 17:39:38,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:38,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:38,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:38,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:38,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:38,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 170 transitions, 3294 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:38,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:38,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:38,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:39,224 INFO L124 PetriNetUnfolderBase]: 777/1660 cut-off events. [2025-03-08 17:39:39,224 INFO L125 PetriNetUnfolderBase]: For 22007/22007 co-relation queries the response was YES. [2025-03-08 17:39:39,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 1660 events. 777/1660 cut-off events. For 22007/22007 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10712 event pairs, 126 based on Foata normal form. 5/1665 useless extension candidates. Maximal degree in co-relation 9738. Up to 904 conditions per place. [2025-03-08 17:39:39,234 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 104 selfloop transitions, 136 changer transitions 30/271 dead transitions. [2025-03-08 17:39:39,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 5322 flow [2025-03-08 17:39:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-03-08 17:39:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-03-08 17:39:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 214 transitions. [2025-03-08 17:39:39,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3741258741258741 [2025-03-08 17:39:39,235 INFO L175 Difference]: Start difference. First operand has 211 places, 170 transitions, 3294 flow. Second operand 26 states and 214 transitions. [2025-03-08 17:39:39,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 5322 flow [2025-03-08 17:39:39,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 271 transitions, 4769 flow, removed 83 selfloop flow, removed 18 redundant places. [2025-03-08 17:39:39,287 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 4002 flow [2025-03-08 17:39:39,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4002, PETRI_PLACES=216, PETRI_TRANSITIONS=201} [2025-03-08 17:39:39,287 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2025-03-08 17:39:39,287 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 4002 flow [2025-03-08 17:39:39,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:39,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:39,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:39,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-03-08 17:39:39,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:39,488 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:39,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 978724045, now seen corresponding path program 17 times [2025-03-08 17:39:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661525211] [2025-03-08 17:39:39,489 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:39,491 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:39,492 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:39,492 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:39,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661525211] [2025-03-08 17:39:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661525211] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025470621] [2025-03-08 17:39:39,542 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:39,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:39,544 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:39,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-03-08 17:39:39,565 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:39,571 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:39,571 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:39,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:39,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 17:39:39,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:39,612 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:39,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025470621] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:39,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:39,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-03-08 17:39:39,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404129930] [2025-03-08 17:39:39,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:39,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:39,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:39,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:39,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 17:39:39,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:39,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 201 transitions, 4002 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:39,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:39,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:39,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:39,839 INFO L124 PetriNetUnfolderBase]: 718/1524 cut-off events. [2025-03-08 17:39:39,839 INFO L125 PetriNetUnfolderBase]: For 18363/18363 co-relation queries the response was YES. [2025-03-08 17:39:39,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9142 conditions, 1524 events. 718/1524 cut-off events. For 18363/18363 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9479 event pairs, 104 based on Foata normal form. 2/1526 useless extension candidates. Maximal degree in co-relation 9081. Up to 708 conditions per place. [2025-03-08 17:39:39,847 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 101 selfloop transitions, 105 changer transitions 17/224 dead transitions. [2025-03-08 17:39:39,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 4751 flow [2025-03-08 17:39:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2025-03-08 17:39:39,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2025-03-08 17:39:39,848 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 4002 flow. Second operand 9 states and 79 transitions. [2025-03-08 17:39:39,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 4751 flow [2025-03-08 17:39:39,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 224 transitions, 4406 flow, removed 99 selfloop flow, removed 16 redundant places. [2025-03-08 17:39:39,893 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 3790 flow [2025-03-08 17:39:39,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3790, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2025-03-08 17:39:39,894 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2025-03-08 17:39:39,894 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 3790 flow [2025-03-08 17:39:39,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:39,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:39,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:39,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-03-08 17:39:40,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:40,095 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:40,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 782242717, now seen corresponding path program 18 times [2025-03-08 17:39:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287412228] [2025-03-08 17:39:40,095 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:40,097 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:40,098 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:40,099 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:40,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:40,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287412228] [2025-03-08 17:39:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287412228] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576204856] [2025-03-08 17:39:40,165 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:40,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:40,166 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:40,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-03-08 17:39:40,186 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:40,194 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:40,194 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:40,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:40,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:40,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:40,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:40,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576204856] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:40,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:40,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:40,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954388803] [2025-03-08 17:39:40,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:40,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:40,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:40,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:40,402 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:40,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 3790 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:40,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:40,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:40,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:40,677 INFO L124 PetriNetUnfolderBase]: 680/1439 cut-off events. [2025-03-08 17:39:40,677 INFO L125 PetriNetUnfolderBase]: For 17169/17169 co-relation queries the response was YES. [2025-03-08 17:39:40,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8539 conditions, 1439 events. 680/1439 cut-off events. For 17169/17169 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8821 event pairs, 145 based on Foata normal form. 4/1443 useless extension candidates. Maximal degree in co-relation 8484. Up to 846 conditions per place. [2025-03-08 17:39:40,685 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 114 selfloop transitions, 92 changer transitions 19/226 dead transitions. [2025-03-08 17:39:40,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 226 transitions, 4412 flow [2025-03-08 17:39:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 17:39:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-08 17:39:40,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 114 transitions. [2025-03-08 17:39:40,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2025-03-08 17:39:40,685 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 3790 flow. Second operand 14 states and 114 transitions. [2025-03-08 17:39:40,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 226 transitions, 4412 flow [2025-03-08 17:39:40,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 226 transitions, 4120 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-03-08 17:39:40,728 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 3456 flow [2025-03-08 17:39:40,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3503, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3456, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2025-03-08 17:39:40,729 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 184 predicate places. [2025-03-08 17:39:40,729 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 3456 flow [2025-03-08 17:39:40,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:40,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:40,729 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:40,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-03-08 17:39:40,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:40,934 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:40,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 247012915, now seen corresponding path program 19 times [2025-03-08 17:39:40,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:40,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891617633] [2025-03-08 17:39:40,934 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:40,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:40,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:40,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:40,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:40,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891617633] [2025-03-08 17:39:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891617633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774169030] [2025-03-08 17:39:41,001 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:41,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:41,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:41,002 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:41,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-03-08 17:39:41,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:41,029 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:41,030 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:41,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:41,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:41,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:41,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:41,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774169030] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:41,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:41,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:41,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203077180] [2025-03-08 17:39:41,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:41,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:41,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:41,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:41,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:41,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 3456 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:41,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:41,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:41,519 INFO L124 PetriNetUnfolderBase]: 761/1568 cut-off events. [2025-03-08 17:39:41,519 INFO L125 PetriNetUnfolderBase]: For 19895/19895 co-relation queries the response was YES. [2025-03-08 17:39:41,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 1568 events. 761/1568 cut-off events. For 19895/19895 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9656 event pairs, 162 based on Foata normal form. 5/1573 useless extension candidates. Maximal degree in co-relation 9418. Up to 795 conditions per place. [2025-03-08 17:39:41,528 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 92 changer transitions 28/249 dead transitions. [2025-03-08 17:39:41,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 249 transitions, 4832 flow [2025-03-08 17:39:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 17:39:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-08 17:39:41,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 125 transitions. [2025-03-08 17:39:41,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2025-03-08 17:39:41,529 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 3456 flow. Second operand 15 states and 125 transitions. [2025-03-08 17:39:41,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 249 transitions, 4832 flow [2025-03-08 17:39:41,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 249 transitions, 4586 flow, removed 11 selfloop flow, removed 14 redundant places. [2025-03-08 17:39:41,579 INFO L231 Difference]: Finished difference. Result has 207 places, 180 transitions, 3451 flow [2025-03-08 17:39:41,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3451, PETRI_PLACES=207, PETRI_TRANSITIONS=180} [2025-03-08 17:39:41,579 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 183 predicate places. [2025-03-08 17:39:41,579 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 180 transitions, 3451 flow [2025-03-08 17:39:41,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:41,579 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:41,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:41,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-03-08 17:39:41,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-03-08 17:39:41,780 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:41,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash 306683221, now seen corresponding path program 20 times [2025-03-08 17:39:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619132343] [2025-03-08 17:39:41,781 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:41,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:41,784 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:41,784 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:41,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619132343] [2025-03-08 17:39:41,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619132343] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:41,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774527113] [2025-03-08 17:39:41,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:41,843 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:41,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-03-08 17:39:41,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:41,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:41,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:41,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:41,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:41,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:41,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:42,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:42,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774527113] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:42,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:42,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:42,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549918195] [2025-03-08 17:39:42,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:42,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:42,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:42,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:42,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:42,058 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:42,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 180 transitions, 3451 flow. Second operand has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:42,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:42,376 INFO L124 PetriNetUnfolderBase]: 709/1472 cut-off events. [2025-03-08 17:39:42,376 INFO L125 PetriNetUnfolderBase]: For 19063/19063 co-relation queries the response was YES. [2025-03-08 17:39:42,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8735 conditions, 1472 events. 709/1472 cut-off events. For 19063/19063 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8909 event pairs, 136 based on Foata normal form. 7/1479 useless extension candidates. Maximal degree in co-relation 8681. Up to 750 conditions per place. [2025-03-08 17:39:42,385 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 99 selfloop transitions, 59 changer transitions 67/226 dead transitions. [2025-03-08 17:39:42,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 226 transitions, 4311 flow [2025-03-08 17:39:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 17:39:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-08 17:39:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 124 transitions. [2025-03-08 17:39:42,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2025-03-08 17:39:42,385 INFO L175 Difference]: Start difference. First operand has 207 places, 180 transitions, 3451 flow. Second operand 16 states and 124 transitions. [2025-03-08 17:39:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 226 transitions, 4311 flow [2025-03-08 17:39:42,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 226 transitions, 4152 flow, removed 12 selfloop flow, removed 12 redundant places. [2025-03-08 17:39:42,434 INFO L231 Difference]: Finished difference. Result has 209 places, 142 transitions, 2614 flow [2025-03-08 17:39:42,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2614, PETRI_PLACES=209, PETRI_TRANSITIONS=142} [2025-03-08 17:39:42,435 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 185 predicate places. [2025-03-08 17:39:42,435 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 142 transitions, 2614 flow [2025-03-08 17:39:42,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.391304347826087) internal successors, (101), 23 states have internal predecessors, (101), 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) [2025-03-08 17:39:42,435 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:42,435 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:42,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-03-08 17:39:42,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-03-08 17:39:42,636 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:42,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 327409873, now seen corresponding path program 21 times [2025-03-08 17:39:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745405913] [2025-03-08 17:39:42,636 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:42,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:42,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:42,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:42,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:42,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745405913] [2025-03-08 17:39:42,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745405913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:42,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780927557] [2025-03-08 17:39:42,694 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:42,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:42,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:42,697 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:42,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-03-08 17:39:42,719 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:42,727 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:42,727 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:42,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:42,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:42,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:42,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:42,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780927557] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:42,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:42,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:42,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129338727] [2025-03-08 17:39:42,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:42,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:42,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:42,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:42,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:42,924 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:42,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 142 transitions, 2614 flow. Second operand has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:42,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:42,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:42,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:43,191 INFO L124 PetriNetUnfolderBase]: 507/1091 cut-off events. [2025-03-08 17:39:43,191 INFO L125 PetriNetUnfolderBase]: For 14286/14286 co-relation queries the response was YES. [2025-03-08 17:39:43,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1091 events. 507/1091 cut-off events. For 14286/14286 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6231 event pairs, 146 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 6345. Up to 733 conditions per place. [2025-03-08 17:39:43,197 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 51 changer transitions 21/165 dead transitions. [2025-03-08 17:39:43,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 165 transitions, 3078 flow [2025-03-08 17:39:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:43,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 101 transitions. [2025-03-08 17:39:43,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3531468531468531 [2025-03-08 17:39:43,198 INFO L175 Difference]: Start difference. First operand has 209 places, 142 transitions, 2614 flow. Second operand 13 states and 101 transitions. [2025-03-08 17:39:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 165 transitions, 3078 flow [2025-03-08 17:39:43,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 165 transitions, 2699 flow, removed 34 selfloop flow, removed 26 redundant places. [2025-03-08 17:39:43,228 INFO L231 Difference]: Finished difference. Result has 185 places, 131 transitions, 2137 flow [2025-03-08 17:39:43,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2137, PETRI_PLACES=185, PETRI_TRANSITIONS=131} [2025-03-08 17:39:43,229 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 161 predicate places. [2025-03-08 17:39:43,229 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 131 transitions, 2137 flow [2025-03-08 17:39:43,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.478260869565218) internal successors, (103), 23 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:43,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:43,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:43,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-03-08 17:39:43,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-03-08 17:39:43,430 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:43,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:43,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1013584379, now seen corresponding path program 22 times [2025-03-08 17:39:43,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:43,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555834217] [2025-03-08 17:39:43,430 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:43,432 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:43,433 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:43,433 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:43,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555834217] [2025-03-08 17:39:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555834217] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856550772] [2025-03-08 17:39:43,490 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:39:43,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:43,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:43,491 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:43,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-03-08 17:39:43,511 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:43,518 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:43,518 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:39:43,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:43,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:43,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:43,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:43,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:43,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856550772] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:43,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:43,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-03-08 17:39:43,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597682036] [2025-03-08 17:39:43,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:43,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 17:39:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:43,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 17:39:43,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2025-03-08 17:39:43,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:43,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 131 transitions, 2137 flow. Second operand has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:43,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:43,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:43,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:44,010 INFO L124 PetriNetUnfolderBase]: 470/999 cut-off events. [2025-03-08 17:39:44,010 INFO L125 PetriNetUnfolderBase]: For 11032/11032 co-relation queries the response was YES. [2025-03-08 17:39:44,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 999 events. 470/999 cut-off events. For 11032/11032 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5454 event pairs, 65 based on Foata normal form. 3/1002 useless extension candidates. Maximal degree in co-relation 5433. Up to 332 conditions per place. [2025-03-08 17:39:44,013 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 64 selfloop transitions, 50 changer transitions 40/155 dead transitions. [2025-03-08 17:39:44,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 155 transitions, 2579 flow [2025-03-08 17:39:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 99 transitions. [2025-03-08 17:39:44,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2025-03-08 17:39:44,014 INFO L175 Difference]: Start difference. First operand has 185 places, 131 transitions, 2137 flow. Second operand 13 states and 99 transitions. [2025-03-08 17:39:44,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 155 transitions, 2579 flow [2025-03-08 17:39:44,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 155 transitions, 2399 flow, removed 10 selfloop flow, removed 14 redundant places. [2025-03-08 17:39:44,033 INFO L231 Difference]: Finished difference. Result has 176 places, 103 transitions, 1573 flow [2025-03-08 17:39:44,033 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1573, PETRI_PLACES=176, PETRI_TRANSITIONS=103} [2025-03-08 17:39:44,033 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 152 predicate places. [2025-03-08 17:39:44,033 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 103 transitions, 1573 flow [2025-03-08 17:39:44,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.458333333333333) internal successors, (107), 24 states have internal predecessors, (107), 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) [2025-03-08 17:39:44,033 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:44,033 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:44,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-03-08 17:39:44,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-03-08 17:39:44,234 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:44,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:44,234 INFO L85 PathProgramCache]: Analyzing trace with hash -329372659, now seen corresponding path program 23 times [2025-03-08 17:39:44,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:44,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552098060] [2025-03-08 17:39:44,234 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:44,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:44,236 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:44,237 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:44,237 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:44,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:44,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552098060] [2025-03-08 17:39:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552098060] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:44,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907126062] [2025-03-08 17:39:44,277 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:39:44,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:44,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:44,279 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:44,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-03-08 17:39:44,298 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:44,304 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:44,304 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:44,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:44,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 17:39:44,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:44,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 17:39:44,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907126062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:39:44,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 17:39:44,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2025-03-08 17:39:44,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37295529] [2025-03-08 17:39:44,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:39:44,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:39:44,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:44,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:39:44,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-08 17:39:44,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:44,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 103 transitions, 1573 flow. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:44,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:44,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:44,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:44,442 INFO L124 PetriNetUnfolderBase]: 411/883 cut-off events. [2025-03-08 17:39:44,442 INFO L125 PetriNetUnfolderBase]: For 8337/8337 co-relation queries the response was YES. [2025-03-08 17:39:44,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 883 events. 411/883 cut-off events. For 8337/8337 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4722 event pairs, 34 based on Foata normal form. 10/893 useless extension candidates. Maximal degree in co-relation 4514. Up to 206 conditions per place. [2025-03-08 17:39:44,445 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 53 selfloop transitions, 29 changer transitions 40/123 dead transitions. [2025-03-08 17:39:44,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 123 transitions, 2003 flow [2025-03-08 17:39:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:39:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:39:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 72 transitions. [2025-03-08 17:39:44,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-03-08 17:39:44,446 INFO L175 Difference]: Start difference. First operand has 176 places, 103 transitions, 1573 flow. Second operand 9 states and 72 transitions. [2025-03-08 17:39:44,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 123 transitions, 2003 flow [2025-03-08 17:39:44,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 123 transitions, 1739 flow, removed 8 selfloop flow, removed 29 redundant places. [2025-03-08 17:39:44,462 INFO L231 Difference]: Finished difference. Result has 143 places, 77 transitions, 1056 flow [2025-03-08 17:39:44,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1056, PETRI_PLACES=143, PETRI_TRANSITIONS=77} [2025-03-08 17:39:44,463 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 119 predicate places. [2025-03-08 17:39:44,463 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 77 transitions, 1056 flow [2025-03-08 17:39:44,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 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) [2025-03-08 17:39:44,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:44,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:44,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-03-08 17:39:44,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:44,663 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:44,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:44,664 INFO L85 PathProgramCache]: Analyzing trace with hash 946345795, now seen corresponding path program 24 times [2025-03-08 17:39:44,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:44,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255664946] [2025-03-08 17:39:44,664 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:44,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:44,665 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:44,667 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:44,667 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:44,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:44,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255664946] [2025-03-08 17:39:44,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255664946] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215699710] [2025-03-08 17:39:44,725 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 17:39:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:44,727 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:44,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-03-08 17:39:44,747 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-03-08 17:39:44,753 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:44,753 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-03-08 17:39:44,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:44,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:44,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:44,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:44,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215699710] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:44,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131598221] [2025-03-08 17:39:44,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:44,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:44,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:44,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:44,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:44,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:44,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 77 transitions, 1056 flow. Second operand has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-08 17:39:44,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:44,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:44,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:45,146 INFO L124 PetriNetUnfolderBase]: 189/435 cut-off events. [2025-03-08 17:39:45,146 INFO L125 PetriNetUnfolderBase]: For 3703/3703 co-relation queries the response was YES. [2025-03-08 17:39:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 435 events. 189/435 cut-off events. For 3703/3703 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1955 event pairs, 7 based on Foata normal form. 4/439 useless extension candidates. Maximal degree in co-relation 2148. Up to 99 conditions per place. [2025-03-08 17:39:45,147 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 31 changer transitions 19/99 dead transitions. [2025-03-08 17:39:45,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 99 transitions, 1336 flow [2025-03-08 17:39:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:45,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 87 transitions. [2025-03-08 17:39:45,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2025-03-08 17:39:45,148 INFO L175 Difference]: Start difference. First operand has 143 places, 77 transitions, 1056 flow. Second operand 12 states and 87 transitions. [2025-03-08 17:39:45,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 99 transitions, 1336 flow [2025-03-08 17:39:45,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 99 transitions, 1199 flow, removed 12 selfloop flow, removed 17 redundant places. [2025-03-08 17:39:45,154 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 784 flow [2025-03-08 17:39:45,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=784, PETRI_PLACES=122, PETRI_TRANSITIONS=65} [2025-03-08 17:39:45,155 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2025-03-08 17:39:45,155 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 784 flow [2025-03-08 17:39:45,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 23 states have internal predecessors, (104), 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) [2025-03-08 17:39:45,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:45,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:45,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-03-08 17:39:45,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-03-08 17:39:45,355 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:45,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1106498671, now seen corresponding path program 25 times [2025-03-08 17:39:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574438706] [2025-03-08 17:39:45,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:45,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:45,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:45,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:45,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:45,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574438706] [2025-03-08 17:39:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574438706] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233300] [2025-03-08 17:39:45,433 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 17:39:45,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:45,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:45,434 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:45,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-03-08 17:39:45,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 17:39:45,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 17:39:45,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:39:45,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:45,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 17:39:45,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:45,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:45,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233300] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:45,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-03-08 17:39:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997935572] [2025-03-08 17:39:45,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:45,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-08 17:39:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:45,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-08 17:39:45,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-03-08 17:39:45,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:45,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 65 transitions, 784 flow. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:45,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:45,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:45,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:45,764 INFO L124 PetriNetUnfolderBase]: 125/289 cut-off events. [2025-03-08 17:39:45,765 INFO L125 PetriNetUnfolderBase]: For 2370/2370 co-relation queries the response was YES. [2025-03-08 17:39:45,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 289 events. 125/289 cut-off events. For 2370/2370 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1093 event pairs, 7 based on Foata normal form. 3/292 useless extension candidates. Maximal degree in co-relation 1430. Up to 67 conditions per place. [2025-03-08 17:39:45,766 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 28 selfloop transitions, 12 changer transitions 42/83 dead transitions. [2025-03-08 17:39:45,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 83 transitions, 1011 flow [2025-03-08 17:39:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 17:39:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-08 17:39:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 81 transitions. [2025-03-08 17:39:45,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2025-03-08 17:39:45,766 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 784 flow. Second operand 12 states and 81 transitions. [2025-03-08 17:39:45,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 83 transitions, 1011 flow [2025-03-08 17:39:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 83 transitions, 854 flow, removed 9 selfloop flow, removed 20 redundant places. [2025-03-08 17:39:45,770 INFO L231 Difference]: Finished difference. Result has 111 places, 34 transitions, 330 flow [2025-03-08 17:39:45,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=330, PETRI_PLACES=111, PETRI_TRANSITIONS=34} [2025-03-08 17:39:45,771 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2025-03-08 17:39:45,771 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 34 transitions, 330 flow [2025-03-08 17:39:45,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:39:45,771 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:45,771 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:45,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-03-08 17:39:45,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:45,971 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:45,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1704229137, now seen corresponding path program 26 times [2025-03-08 17:39:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578524119] [2025-03-08 17:39:45,972 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:45,973 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-08 17:39:45,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:39:45,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:45,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578524119] [2025-03-08 17:39:46,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578524119] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:46,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133722601] [2025-03-08 17:39:46,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:39:46,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:46,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:46,002 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:46,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-03-08 17:39:46,022 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-08 17:39:46,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:39:46,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 17:39:46,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:46,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 17:39:46,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133722601] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:46,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-03-08 17:39:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276041518] [2025-03-08 17:39:46,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:46,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 17:39:46,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:46,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 17:39:46,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-08 17:39:46,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:46,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 34 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2025-03-08 17:39:46,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:46,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:46,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:46,145 INFO L124 PetriNetUnfolderBase]: 43/98 cut-off events. [2025-03-08 17:39:46,146 INFO L125 PetriNetUnfolderBase]: For 853/853 co-relation queries the response was YES. [2025-03-08 17:39:46,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 98 events. 43/98 cut-off events. For 853/853 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 191 event pairs, 12 based on Foata normal form. 2/100 useless extension candidates. Maximal degree in co-relation 483. Up to 38 conditions per place. [2025-03-08 17:39:46,146 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 28 selfloop transitions, 5 changer transitions 8/42 dead transitions. [2025-03-08 17:39:46,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 42 transitions, 419 flow [2025-03-08 17:39:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:39:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:39:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 59 transitions. [2025-03-08 17:39:46,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2025-03-08 17:39:46,147 INFO L175 Difference]: Start difference. First operand has 111 places, 34 transitions, 330 flow. Second operand 8 states and 59 transitions. [2025-03-08 17:39:46,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 42 transitions, 419 flow [2025-03-08 17:39:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 42 transitions, 318 flow, removed 8 selfloop flow, removed 24 redundant places. [2025-03-08 17:39:46,148 INFO L231 Difference]: Finished difference. Result has 59 places, 27 transitions, 172 flow [2025-03-08 17:39:46,148 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=172, PETRI_PLACES=59, PETRI_TRANSITIONS=27} [2025-03-08 17:39:46,148 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2025-03-08 17:39:46,148 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions, 172 flow [2025-03-08 17:39:46,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 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) [2025-03-08 17:39:46,149 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:39:46,149 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:39:46,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-03-08 17:39:46,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:46,349 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-08 17:39:46,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:39:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1363964874, now seen corresponding path program 27 times [2025-03-08 17:39:46,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:39:46,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684787792] [2025-03-08 17:39:46,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:46,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:39:46,352 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-08 17:39:46,353 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:39:46,353 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:46,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:39:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684787792] [2025-03-08 17:39:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684787792] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 17:39:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461692512] [2025-03-08 17:39:46,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:39:46,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 17:39:46,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:39:46,447 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 17:39:46,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-03-08 17:39:46,466 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-03-08 17:39:46,473 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:39:46,473 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-08 17:39:46,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:39:46,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 17:39:46,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 17:39:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 17:39:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:39:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461692512] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 17:39:46,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 17:39:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-03-08 17:39:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63372152] [2025-03-08 17:39:46,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 17:39:46,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-08 17:39:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:39:46,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-08 17:39:46,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-03-08 17:39:46,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-03-08 17:39:46,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 27 transitions, 172 flow. Second operand has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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) [2025-03-08 17:39:46,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:39:46,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-03-08 17:39:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:39:46,868 INFO L124 PetriNetUnfolderBase]: 36/83 cut-off events. [2025-03-08 17:39:46,868 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-03-08 17:39:46,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 83 events. 36/83 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 326. Up to 21 conditions per place. [2025-03-08 17:39:46,869 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2025-03-08 17:39:46,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 42 transitions, 295 flow [2025-03-08 17:39:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 17:39:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-08 17:39:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 79 transitions. [2025-03-08 17:39:46,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2762237762237762 [2025-03-08 17:39:46,869 INFO L175 Difference]: Start difference. First operand has 59 places, 27 transitions, 172 flow. Second operand 13 states and 79 transitions. [2025-03-08 17:39:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 42 transitions, 295 flow [2025-03-08 17:39:46,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 276 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-03-08 17:39:46,870 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-03-08 17:39:46,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2025-03-08 17:39:46,870 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2025-03-08 17:39:46,871 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-03-08 17:39:46,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.428571428571429) internal successors, (124), 28 states have internal predecessors, (124), 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) [2025-03-08 17:39:46,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-08 17:39:46,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-08 17:39:46,873 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-08 17:39:46,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-03-08 17:39:47,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2025-03-08 17:39:47,074 INFO L422 BasicCegarLoop]: Path program histogram: [27, 16, 6, 6] [2025-03-08 17:39:47,076 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:39:47,076 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:39:47,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:39:47 BasicIcfg [2025-03-08 17:39:47,079 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:39:47,080 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:39:47,080 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:39:47,080 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:39:47,081 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:39:12" (3/4) ... [2025-03-08 17:39:47,082 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 17:39:47,084 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-08 17:39:47,084 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-08 17:39:47,087 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2025-03-08 17:39:47,088 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-08 17:39:47,088 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-08 17:39:47,088 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 17:39:47,137 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:39:47,137 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:39:47,137 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:39:47,138 INFO L158 Benchmark]: Toolchain (without parser) took 34749.85ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 109.9MB in the beginning and 355.4MB in the end (delta: -245.6MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2025-03-08 17:39:47,138 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:47,138 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.43ms. Allocated memory is still 142.6MB. Free memory was 109.9MB in the beginning and 99.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:39:47,138 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.29ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 97.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:39:47,138 INFO L158 Benchmark]: Boogie Preprocessor took 26.60ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 96.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:47,139 INFO L158 Benchmark]: IcfgBuilder took 274.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 77.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:39:47,139 INFO L158 Benchmark]: TraceAbstraction took 34213.89ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 77.0MB in the beginning and 362.9MB in the end (delta: -285.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:47,139 INFO L158 Benchmark]: Witness Printer took 56.95ms. Allocated memory is still 419.4MB. Free memory was 362.9MB in the beginning and 355.4MB in the end (delta: 7.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:39:47,140 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 201.3MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.43ms. Allocated memory is still 142.6MB. Free memory was 109.9MB in the beginning and 99.1MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.29ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 97.9MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.60ms. Allocated memory is still 142.6MB. Free memory was 97.9MB in the beginning and 96.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 274.00ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 77.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 34213.89ms. Allocated memory was 142.6MB in the beginning and 419.4MB in the end (delta: 276.8MB). Free memory was 77.0MB in the beginning and 362.9MB in the end (delta: -285.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.95ms. Allocated memory is still 419.4MB. Free memory was 362.9MB in the beginning and 355.4MB in the end (delta: 7.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 33 locations, 36 edges, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.1s, OverallIterations: 55, TraceHistogramMax: 2, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2729 mSDsluCounter, 550 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 474 mSDsCounter, 607 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18744 IncrementalHoareTripleChecker+Invalid, 19351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 607 mSolverCounterUnsat, 76 mSDtfsCounter, 18744 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1918 GetRequests, 905 SyntacticMatches, 9 SemanticMatches, 1004 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4071occurred in iteration=42, InterpolantAutomatonStates: 653, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 1628 NumberOfCodeBlocks, 1628 NumberOfCodeBlocksAsserted, 150 NumberOfCheckSat, 2059 ConstructedInterpolants, 0 QuantifiedInterpolants, 11149 SizeOfPredicates, 103 NumberOfNonLiveVariables, 3192 ConjunctsInSsa, 392 ConjunctsInUnsatCore, 117 InterpolantComputations, 32 PerfectInterpolantSequences, 33/207 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 17:39:47,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE