./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 c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/test-easy11.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:44:11,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:44:11,063 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:44:11,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:44:11,070 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:44:11,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:44:11,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:44:11,095 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:44:11,096 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:44:11,096 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:44:11,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:44:11,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:44:11,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:44:11,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:44:11,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:44:11,098 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:44:11,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:11,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:44:11,099 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd59a2dab1e1a10d8308eb629ebc6f779430a45291e09beb1ad6d6fe62d16e94 [2025-02-06 04:44:11,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:44:11,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:44:11,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:44:11,327 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:44:11,327 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:44:11,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-06 04:44:12,490 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b5b8b082/b3e54cfc83a54beeb76a16a5e4fe09da/FLAG5d9a3a570 [2025-02-06 04:44:12,755 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:44:12,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2025-02-06 04:44:12,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b5b8b082/b3e54cfc83a54beeb76a16a5e4fe09da/FLAG5d9a3a570 [2025-02-06 04:44:13,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1b5b8b082/b3e54cfc83a54beeb76a16a5e4fe09da [2025-02-06 04:44:13,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:44:13,044 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:44:13,045 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:13,045 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:44:13,048 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:44:13,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49efd45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13, skipping insertion in model container [2025-02-06 04:44:13,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,062 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:44:13,184 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2025-02-06 04:44:13,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:13,194 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:44:13,211 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1841,1854] [2025-02-06 04:44:13,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:44:13,223 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:44:13,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13 WrapperNode [2025-02-06 04:44:13,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:44:13,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:13,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:44:13,227 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:44:13,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,244 INFO L138 Inliner]: procedures = 18, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 41 [2025-02-06 04:44:13,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:44:13,245 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:44:13,245 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:44:13,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:44:13,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,251 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,257 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 04:44:13,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,259 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:44:13,261 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:44:13,261 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:44:13,261 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:44:13,262 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (1/1) ... [2025-02-06 04:44:13,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:44:13,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:13,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:44:13,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:44:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:44:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:44:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:44:13,307 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:44:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:44:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:44:13,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:44:13,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:44:13,309 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:44:13,374 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:44:13,376 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:44:13,507 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:44:13,508 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:44:13,602 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:44:13,602 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:44:13,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:13 BoogieIcfgContainer [2025-02-06 04:44:13,603 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:44:13,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:44:13,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:44:13,608 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:44:13,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:44:13" (1/3) ... [2025-02-06 04:44:13,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:13, skipping insertion in model container [2025-02-06 04:44:13,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:44:13" (2/3) ... [2025-02-06 04:44:13,609 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9d067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:44:13, skipping insertion in model container [2025-02-06 04:44:13,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:13" (3/3) ... [2025-02-06 04:44:13,610 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2025-02-06 04:44:13,622 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:44:13,623 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. [2025-02-06 04:44:13,624 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:44:13,667 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 04:44:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2025-02-06 04:44:13,715 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2025-02-06 04:44:13,721 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:44:13,723 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. [2025-02-06 04:44:13,724 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2025-02-06 04:44:13,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2025-02-06 04:44:13,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:44:13,742 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;@5e77330f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:44:13,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-02-06 04:44:13,748 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:44:13,748 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-02-06 04:44:13,748 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 04:44:13,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:13,749 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:13,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:13,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash -317440562, now seen corresponding path program 1 times [2025-02-06 04:44:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:13,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347708447] [2025-02-06 04:44:13,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:13,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:13,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:13,849 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:13,849 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:14,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:14,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347708447] [2025-02-06 04:44:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347708447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:14,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:14,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:14,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46048740] [2025-02-06 04:44:14,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:14,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:14,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:14,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:14,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:14,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:14,277 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) [2025-02-06 04:44:14,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:14,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:14,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:14,634 INFO L124 PetriNetUnfolderBase]: 111/201 cut-off events. [2025-02-06 04:44:14,635 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2025-02-06 04:44:14,636 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. [2025-02-06 04:44:14,639 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 40 selfloop transitions, 10 changer transitions 10/61 dead transitions. [2025-02-06 04:44:14,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 61 transitions, 278 flow [2025-02-06 04:44:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-02-06 04:44:14,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:44:14,650 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 50 flow. Second operand 9 states and 88 transitions. [2025-02-06 04:44:14,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 61 transitions, 278 flow [2025-02-06 04:44:14,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 61 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:14,656 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 107 flow [2025-02-06 04:44:14,658 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} [2025-02-06 04:44:14,660 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2025-02-06 04:44:14,661 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 107 flow [2025-02-06 04:44:14,661 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) [2025-02-06 04:44:14,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:14,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:14,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:44:14,662 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash 541205236, now seen corresponding path program 2 times [2025-02-06 04:44:14,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:14,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186818880] [2025-02-06 04:44:14,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:14,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:14,671 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:14,675 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:14,675 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:14,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:14,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:14,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186818880] [2025-02-06 04:44:14,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186818880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:14,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:14,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149459018] [2025-02-06 04:44:14,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:14,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:14,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:14,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:14,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:14,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:14,906 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) [2025-02-06 04:44:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:15,082 INFO L124 PetriNetUnfolderBase]: 114/208 cut-off events. [2025-02-06 04:44:15,082 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2025-02-06 04:44:15,083 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. [2025-02-06 04:44:15,084 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 34 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2025-02-06 04:44:15,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 336 flow [2025-02-06 04:44:15,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:15,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-02-06 04:44:15,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-02-06 04:44:15,087 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 107 flow. Second operand 9 states and 83 transitions. [2025-02-06 04:44:15,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 336 flow [2025-02-06 04:44:15,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:15,089 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 190 flow [2025-02-06 04:44:15,089 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} [2025-02-06 04:44:15,091 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2025-02-06 04:44:15,091 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 190 flow [2025-02-06 04:44:15,091 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) [2025-02-06 04:44:15,091 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:15,091 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:15,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:44:15,092 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:15,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:15,092 INFO L85 PathProgramCache]: Analyzing trace with hash -699367322, now seen corresponding path program 3 times [2025-02-06 04:44:15,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:15,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995998168] [2025-02-06 04:44:15,092 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:15,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:15,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:15,100 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:15,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:44:15,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:15,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995998168] [2025-02-06 04:44:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995998168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292855415] [2025-02-06 04:44:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:15,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:15,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:15,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:15,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:15,234 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) [2025-02-06 04:44:15,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:15,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:15,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:15,438 INFO L124 PetriNetUnfolderBase]: 119/216 cut-off events. [2025-02-06 04:44:15,438 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2025-02-06 04:44:15,439 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. [2025-02-06 04:44:15,440 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 39 selfloop transitions, 18 changer transitions 9/67 dead transitions. [2025-02-06 04:44:15,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 67 transitions, 450 flow [2025-02-06 04:44:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-02-06 04:44:15,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-02-06 04:44:15,443 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 190 flow. Second operand 9 states and 86 transitions. [2025-02-06 04:44:15,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 67 transitions, 450 flow [2025-02-06 04:44:15,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 418 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:15,445 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 257 flow [2025-02-06 04:44:15,447 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} [2025-02-06 04:44:15,448 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2025-02-06 04:44:15,448 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 257 flow [2025-02-06 04:44:15,448 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) [2025-02-06 04:44:15,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:15,448 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:15,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:44:15,449 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1553897768, now seen corresponding path program 4 times [2025-02-06 04:44:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:15,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136195532] [2025-02-06 04:44:15,450 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:15,457 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:44:15,461 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:15,463 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:15,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136195532] [2025-02-06 04:44:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136195532] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:15,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:15,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:15,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865299590] [2025-02-06 04:44:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:15,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:15,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:15,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:15,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:15,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:15,657 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) [2025-02-06 04:44:15,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:15,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:15,844 INFO L124 PetriNetUnfolderBase]: 194/329 cut-off events. [2025-02-06 04:44:15,845 INFO L125 PetriNetUnfolderBase]: For 603/603 co-relation queries the response was YES. [2025-02-06 04:44:15,846 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. [2025-02-06 04:44:15,851 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 44 selfloop transitions, 37 changer transitions 8/90 dead transitions. [2025-02-06 04:44:15,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 737 flow [2025-02-06 04:44:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:15,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-02-06 04:44:15,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-02-06 04:44:15,852 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 257 flow. Second operand 8 states and 90 transitions. [2025-02-06 04:44:15,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 737 flow [2025-02-06 04:44:15,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 90 transitions, 661 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-02-06 04:44:15,858 INFO L231 Difference]: Finished difference. Result has 53 places, 64 transitions, 518 flow [2025-02-06 04:44:15,859 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} [2025-02-06 04:44:15,859 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 29 predicate places. [2025-02-06 04:44:15,859 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 64 transitions, 518 flow [2025-02-06 04:44:15,860 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) [2025-02-06 04:44:15,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:15,860 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:15,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:44:15,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:15,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 31400426, now seen corresponding path program 5 times [2025-02-06 04:44:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:15,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112835526] [2025-02-06 04:44:15,861 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:15,865 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:15,867 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:15,868 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:15,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:15,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112835526] [2025-02-06 04:44:15,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112835526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:15,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782784950] [2025-02-06 04:44:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:15,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:15,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:15,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:15,988 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:15,988 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) [2025-02-06 04:44:15,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:15,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:16,167 INFO L124 PetriNetUnfolderBase]: 207/357 cut-off events. [2025-02-06 04:44:16,167 INFO L125 PetriNetUnfolderBase]: For 817/817 co-relation queries the response was YES. [2025-02-06 04:44:16,168 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. [2025-02-06 04:44:16,169 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 53 selfloop transitions, 33 changer transitions 10/97 dead transitions. [2025-02-06 04:44:16,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 859 flow [2025-02-06 04:44:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2025-02-06 04:44:16,171 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2025-02-06 04:44:16,171 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 518 flow. Second operand 9 states and 90 transitions. [2025-02-06 04:44:16,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 859 flow [2025-02-06 04:44:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 839 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-02-06 04:44:16,175 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 591 flow [2025-02-06 04:44:16,175 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} [2025-02-06 04:44:16,176 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 38 predicate places. [2025-02-06 04:44:16,176 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 591 flow [2025-02-06 04:44:16,176 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) [2025-02-06 04:44:16,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:16,176 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:16,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:44:16,177 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:16,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:16,177 INFO L85 PathProgramCache]: Analyzing trace with hash 513661970, now seen corresponding path program 6 times [2025-02-06 04:44:16,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:16,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373661863] [2025-02-06 04:44:16,177 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:16,181 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:16,183 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:16,183 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:44:16,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:16,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:16,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373661863] [2025-02-06 04:44:16,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373661863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:16,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:16,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877676747] [2025-02-06 04:44:16,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:16,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:16,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:16,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:16,273 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:16,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:16,280 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) [2025-02-06 04:44:16,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:16,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:16,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:16,440 INFO L124 PetriNetUnfolderBase]: 225/385 cut-off events. [2025-02-06 04:44:16,440 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2025-02-06 04:44:16,441 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. [2025-02-06 04:44:16,443 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 51 selfloop transitions, 39 changer transitions 10/101 dead transitions. [2025-02-06 04:44:16,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 101 transitions, 1023 flow [2025-02-06 04:44:16,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:16,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:16,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-02-06 04:44:16,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-02-06 04:44:16,445 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 591 flow. Second operand 9 states and 87 transitions. [2025-02-06 04:44:16,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 101 transitions, 1023 flow [2025-02-06 04:44:16,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 101 transitions, 933 flow, removed 6 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:16,451 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 765 flow [2025-02-06 04:44:16,451 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} [2025-02-06 04:44:16,452 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places. [2025-02-06 04:44:16,452 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 765 flow [2025-02-06 04:44:16,453 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) [2025-02-06 04:44:16,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:16,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:16,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:44:16,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:16,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1139291404, now seen corresponding path program 7 times [2025-02-06 04:44:16,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:16,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48571874] [2025-02-06 04:44:16,454 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:16,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:16,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:16,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:16,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:16,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:16,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:16,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48571874] [2025-02-06 04:44:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48571874] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:16,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463454242] [2025-02-06 04:44:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:16,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:16,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:16,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:16,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:16,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:16,575 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) [2025-02-06 04:44:16,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:16,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:16,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:16,755 INFO L124 PetriNetUnfolderBase]: 218/373 cut-off events. [2025-02-06 04:44:16,756 INFO L125 PetriNetUnfolderBase]: For 1416/1416 co-relation queries the response was YES. [2025-02-06 04:44:16,757 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. [2025-02-06 04:44:16,758 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 56 selfloop transitions, 36 changer transitions 12/105 dead transitions. [2025-02-06 04:44:16,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 105 transitions, 1124 flow [2025-02-06 04:44:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:16,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-02-06 04:44:16,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-02-06 04:44:16,760 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 765 flow. Second operand 9 states and 86 transitions. [2025-02-06 04:44:16,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 105 transitions, 1124 flow [2025-02-06 04:44:16,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 1063 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:16,764 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 752 flow [2025-02-06 04:44:16,765 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} [2025-02-06 04:44:16,765 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2025-02-06 04:44:16,765 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 752 flow [2025-02-06 04:44:16,765 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) [2025-02-06 04:44:16,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:16,766 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:16,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 04:44:16,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:16,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 968494814, now seen corresponding path program 8 times [2025-02-06 04:44:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:16,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485607626] [2025-02-06 04:44:16,766 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:16,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:16,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:16,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:16,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:16,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:16,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:16,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485607626] [2025-02-06 04:44:16,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485607626] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:16,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:16,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076625580] [2025-02-06 04:44:16,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:16,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:16,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:16,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:16,853 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:16,854 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) [2025-02-06 04:44:16,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:16,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:17,037 INFO L124 PetriNetUnfolderBase]: 214/366 cut-off events. [2025-02-06 04:44:17,038 INFO L125 PetriNetUnfolderBase]: For 1463/1463 co-relation queries the response was YES. [2025-02-06 04:44:17,038 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. [2025-02-06 04:44:17,040 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 50 selfloop transitions, 38 changer transitions 9/98 dead transitions. [2025-02-06 04:44:17,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 98 transitions, 1071 flow [2025-02-06 04:44:17,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:17,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2025-02-06 04:44:17,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2025-02-06 04:44:17,041 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 752 flow. Second operand 9 states and 87 transitions. [2025-02-06 04:44:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 98 transitions, 1071 flow [2025-02-06 04:44:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 991 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-02-06 04:44:17,047 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 798 flow [2025-02-06 04:44:17,047 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} [2025-02-06 04:44:17,047 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2025-02-06 04:44:17,047 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 798 flow [2025-02-06 04:44:17,048 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) [2025-02-06 04:44:17,048 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:17,048 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:17,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 04:44:17,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash 433265012, now seen corresponding path program 9 times [2025-02-06 04:44:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761506204] [2025-02-06 04:44:17,049 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:17,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:17,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:17,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:44:17,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:17,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:17,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761506204] [2025-02-06 04:44:17,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761506204] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:17,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870837950] [2025-02-06 04:44:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:17,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:17,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:17,130 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:17,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:17,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:17,136 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) [2025-02-06 04:44:17,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:17,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:17,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:17,297 INFO L124 PetriNetUnfolderBase]: 212/364 cut-off events. [2025-02-06 04:44:17,298 INFO L125 PetriNetUnfolderBase]: For 1559/1559 co-relation queries the response was YES. [2025-02-06 04:44:17,298 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. [2025-02-06 04:44:17,300 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 49 selfloop transitions, 36 changer transitions 11/97 dead transitions. [2025-02-06 04:44:17,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 1079 flow [2025-02-06 04:44:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-02-06 04:44:17,301 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-02-06 04:44:17,301 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 798 flow. Second operand 9 states and 85 transitions. [2025-02-06 04:44:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 1079 flow [2025-02-06 04:44:17,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 1005 flow, removed 8 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:17,306 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 775 flow [2025-02-06 04:44:17,306 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} [2025-02-06 04:44:17,306 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 50 predicate places. [2025-02-06 04:44:17,306 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 775 flow [2025-02-06 04:44:17,307 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) [2025-02-06 04:44:17,307 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:17,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:17,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 04:44:17,307 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:17,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:17,307 INFO L85 PathProgramCache]: Analyzing trace with hash -396266158, now seen corresponding path program 10 times [2025-02-06 04:44:17,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:17,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357266705] [2025-02-06 04:44:17,308 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:17,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:17,310 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:44:17,312 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:17,312 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:17,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:17,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:17,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357266705] [2025-02-06 04:44:17,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357266705] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:17,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:17,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:17,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47129020] [2025-02-06 04:44:17,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:17,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:17,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:17,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:17,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:17,403 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:17,403 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) [2025-02-06 04:44:17,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:17,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:17,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:17,626 INFO L124 PetriNetUnfolderBase]: 285/475 cut-off events. [2025-02-06 04:44:17,626 INFO L125 PetriNetUnfolderBase]: For 2283/2283 co-relation queries the response was YES. [2025-02-06 04:44:17,627 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. [2025-02-06 04:44:17,629 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 61 selfloop transitions, 52 changer transitions 9/123 dead transitions. [2025-02-06 04:44:17,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 123 transitions, 1448 flow [2025-02-06 04:44:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2025-02-06 04:44:17,630 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2025-02-06 04:44:17,630 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 775 flow. Second operand 9 states and 96 transitions. [2025-02-06 04:44:17,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 123 transitions, 1448 flow [2025-02-06 04:44:17,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 123 transitions, 1334 flow, removed 3 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:17,637 INFO L231 Difference]: Finished difference. Result has 77 places, 95 transitions, 1139 flow [2025-02-06 04:44:17,637 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} [2025-02-06 04:44:17,637 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 53 predicate places. [2025-02-06 04:44:17,638 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 1139 flow [2025-02-06 04:44:17,638 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) [2025-02-06 04:44:17,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:17,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:17,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 04:44:17,638 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:17,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash -9879194, now seen corresponding path program 11 times [2025-02-06 04:44:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:17,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778146643] [2025-02-06 04:44:17,639 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:17,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:17,642 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:17,643 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:17,643 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:17,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778146643] [2025-02-06 04:44:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778146643] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:17,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168054106] [2025-02-06 04:44:17,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:17,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:17,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:17,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:17,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:17,742 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:17,743 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) [2025-02-06 04:44:17,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:17,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:17,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:17,931 INFO L124 PetriNetUnfolderBase]: 287/483 cut-off events. [2025-02-06 04:44:17,931 INFO L125 PetriNetUnfolderBase]: For 2524/2524 co-relation queries the response was YES. [2025-02-06 04:44:17,933 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. [2025-02-06 04:44:17,935 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 53 selfloop transitions, 50 changer transitions 14/118 dead transitions. [2025-02-06 04:44:17,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1476 flow [2025-02-06 04:44:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 86 transitions. [2025-02-06 04:44:17,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2025-02-06 04:44:17,936 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 1139 flow. Second operand 9 states and 86 transitions. [2025-02-06 04:44:17,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1476 flow [2025-02-06 04:44:17,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 118 transitions, 1416 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:17,945 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 1142 flow [2025-02-06 04:44:17,945 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} [2025-02-06 04:44:17,946 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-02-06 04:44:17,946 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 1142 flow [2025-02-06 04:44:17,946 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) [2025-02-06 04:44:17,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:17,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:17,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 04:44:17,947 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:17,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1399138266, now seen corresponding path program 12 times [2025-02-06 04:44:17,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:17,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870986196] [2025-02-06 04:44:17,947 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:17,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:17,950 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:17,952 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:17,952 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 04:44:17,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870986196] [2025-02-06 04:44:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870986196] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122806823] [2025-02-06 04:44:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:18,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:18,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:18,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:18,082 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:18,083 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) [2025-02-06 04:44:18,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:18,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:18,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:18,254 INFO L124 PetriNetUnfolderBase]: 301/503 cut-off events. [2025-02-06 04:44:18,254 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2025-02-06 04:44:18,255 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. [2025-02-06 04:44:18,257 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 56 selfloop transitions, 51 changer transitions 11/119 dead transitions. [2025-02-06 04:44:18,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1503 flow [2025-02-06 04:44:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:18,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2025-02-06 04:44:18,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 04:44:18,258 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 1142 flow. Second operand 9 states and 88 transitions. [2025-02-06 04:44:18,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1503 flow [2025-02-06 04:44:18,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 1385 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:18,266 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 1153 flow [2025-02-06 04:44:18,266 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} [2025-02-06 04:44:18,267 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 58 predicate places. [2025-02-06 04:44:18,267 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 1153 flow [2025-02-06 04:44:18,267 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) [2025-02-06 04:44:18,267 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:18,267 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:18,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 04:44:18,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:18,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1473500810, now seen corresponding path program 13 times [2025-02-06 04:44:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526346865] [2025-02-06 04:44:18,268 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:18,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:18,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:18,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:18,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:18,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:18,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526346865] [2025-02-06 04:44:18,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526346865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:18,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:18,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:18,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691569973] [2025-02-06 04:44:18,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:18,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:18,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:18,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:18,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:18,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:18,350 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) [2025-02-06 04:44:18,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:18,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:18,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:18,523 INFO L124 PetriNetUnfolderBase]: 313/525 cut-off events. [2025-02-06 04:44:18,523 INFO L125 PetriNetUnfolderBase]: For 3341/3341 co-relation queries the response was YES. [2025-02-06 04:44:18,524 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. [2025-02-06 04:44:18,526 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 59 selfloop transitions, 56 changer transitions 11/127 dead transitions. [2025-02-06 04:44:18,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 1713 flow [2025-02-06 04:44:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2025-02-06 04:44:18,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2025-02-06 04:44:18,527 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 1153 flow. Second operand 9 states and 85 transitions. [2025-02-06 04:44:18,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 1713 flow [2025-02-06 04:44:18,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 1584 flow, removed 7 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:18,535 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 1386 flow [2025-02-06 04:44:18,535 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} [2025-02-06 04:44:18,536 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 62 predicate places. [2025-02-06 04:44:18,536 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 1386 flow [2025-02-06 04:44:18,536 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) [2025-02-06 04:44:18,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:18,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:18,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 04:44:18,536 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:18,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:18,537 INFO L85 PathProgramCache]: Analyzing trace with hash -368722892, now seen corresponding path program 14 times [2025-02-06 04:44:18,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:18,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991055804] [2025-02-06 04:44:18,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:18,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:18,539 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:18,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:18,544 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:44:18,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991055804] [2025-02-06 04:44:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991055804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:18,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:18,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:18,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304474353] [2025-02-06 04:44:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:18,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:18,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:18,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:18,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:18,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:18,640 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) [2025-02-06 04:44:18,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:18,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:18,794 INFO L124 PetriNetUnfolderBase]: 321/541 cut-off events. [2025-02-06 04:44:18,795 INFO L125 PetriNetUnfolderBase]: For 3977/3977 co-relation queries the response was YES. [2025-02-06 04:44:18,796 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. [2025-02-06 04:44:18,799 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 69 selfloop transitions, 52 changer transitions 9/131 dead transitions. [2025-02-06 04:44:18,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1836 flow [2025-02-06 04:44:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:18,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:18,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 84 transitions. [2025-02-06 04:44:18,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-02-06 04:44:18,800 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 1386 flow. Second operand 9 states and 84 transitions. [2025-02-06 04:44:18,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1836 flow [2025-02-06 04:44:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 131 transitions, 1745 flow, removed 24 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:18,810 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 1449 flow [2025-02-06 04:44:18,810 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} [2025-02-06 04:44:18,811 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-02-06 04:44:18,811 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 1449 flow [2025-02-06 04:44:18,811 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) [2025-02-06 04:44:18,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:18,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:18,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 04:44:18,812 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:18,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2041258070, now seen corresponding path program 15 times [2025-02-06 04:44:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:18,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025432837] [2025-02-06 04:44:18,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:18,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:18,815 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 17 statements into 1 equivalence classes. [2025-02-06 04:44:18,817 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:18,817 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:44:18,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:18,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:18,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025432837] [2025-02-06 04:44:18,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025432837] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:18,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:18,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:18,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483242690] [2025-02-06 04:44:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:18,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:18,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:18,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:18,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:18,904 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) [2025-02-06 04:44:18,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:18,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:18,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:19,082 INFO L124 PetriNetUnfolderBase]: 325/549 cut-off events. [2025-02-06 04:44:19,082 INFO L125 PetriNetUnfolderBase]: For 4058/4058 co-relation queries the response was YES. [2025-02-06 04:44:19,083 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. [2025-02-06 04:44:19,086 INFO L140 encePairwiseOnDemand]: 13/22 looper letters, 72 selfloop transitions, 51 changer transitions 9/133 dead transitions. [2025-02-06 04:44:19,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 133 transitions, 1902 flow [2025-02-06 04:44:19,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:19,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2025-02-06 04:44:19,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2025-02-06 04:44:19,087 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 1449 flow. Second operand 9 states and 81 transitions. [2025-02-06 04:44:19,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 133 transitions, 1902 flow [2025-02-06 04:44:19,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 133 transitions, 1785 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:19,096 INFO L231 Difference]: Finished difference. Result has 92 places, 108 transitions, 1460 flow [2025-02-06 04:44:19,096 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} [2025-02-06 04:44:19,096 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-02-06 04:44:19,097 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 108 transitions, 1460 flow [2025-02-06 04:44:19,097 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) [2025-02-06 04:44:19,097 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:19,097 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:19,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 04:44:19,097 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:19,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:19,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2008730612, now seen corresponding path program 16 times [2025-02-06 04:44:19,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:19,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277961658] [2025-02-06 04:44:19,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:19,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:19,100 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 17 statements into 2 equivalence classes. [2025-02-06 04:44:19,102 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 04:44:19,102 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:19,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:19,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277961658] [2025-02-06 04:44:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277961658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:19,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 04:44:19,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741635466] [2025-02-06 04:44:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:19,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:19,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:19,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 04:44:19,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:19,184 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) [2025-02-06 04:44:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:19,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:19,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:19,383 INFO L124 PetriNetUnfolderBase]: 344/582 cut-off events. [2025-02-06 04:44:19,383 INFO L125 PetriNetUnfolderBase]: For 4342/4342 co-relation queries the response was YES. [2025-02-06 04:44:19,385 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. [2025-02-06 04:44:19,388 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 65 selfloop transitions, 56 changer transitions 13/135 dead transitions. [2025-02-06 04:44:19,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 135 transitions, 1921 flow [2025-02-06 04:44:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2025-02-06 04:44:19,389 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2025-02-06 04:44:19,389 INFO L175 Difference]: Start difference. First operand has 92 places, 108 transitions, 1460 flow. Second operand 8 states and 90 transitions. [2025-02-06 04:44:19,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 135 transitions, 1921 flow [2025-02-06 04:44:19,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 135 transitions, 1778 flow, removed 11 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:19,400 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 1417 flow [2025-02-06 04:44:19,400 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} [2025-02-06 04:44:19,402 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2025-02-06 04:44:19,402 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 1417 flow [2025-02-06 04:44:19,402 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) [2025-02-06 04:44:19,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:19,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:19,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 04:44:19,403 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:19,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1598782571, now seen corresponding path program 1 times [2025-02-06 04:44:19,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:19,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59763786] [2025-02-06 04:44:19,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:19,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:19,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:44:19,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:19,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:19,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59763786] [2025-02-06 04:44:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59763786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935069880] [2025-02-06 04:44:19,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:19,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:19,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:19,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 04:44:19,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:44:19,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:19,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:19,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:19,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:19,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:19,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:19,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:19,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935069880] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2025-02-06 04:44:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389907984] [2025-02-06 04:44:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:19,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:19,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:19,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:44:19,557 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:19,557 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) [2025-02-06 04:44:19,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:19,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:19,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:19,653 INFO L124 PetriNetUnfolderBase]: 383/661 cut-off events. [2025-02-06 04:44:19,654 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2025-02-06 04:44:19,655 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. [2025-02-06 04:44:19,658 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 107 selfloop transitions, 31 changer transitions 0/139 dead transitions. [2025-02-06 04:44:19,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 1920 flow [2025-02-06 04:44:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:44:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:44:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2025-02-06 04:44:19,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2025-02-06 04:44:19,659 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 1417 flow. Second operand 5 states and 64 transitions. [2025-02-06 04:44:19,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 1920 flow [2025-02-06 04:44:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 139 transitions, 1782 flow, removed 10 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:19,669 INFO L231 Difference]: Finished difference. Result has 91 places, 110 transitions, 1431 flow [2025-02-06 04:44:19,669 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} [2025-02-06 04:44:19,669 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2025-02-06 04:44:19,669 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 110 transitions, 1431 flow [2025-02-06 04:44:19,670 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) [2025-02-06 04:44:19,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:19,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:19,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 04:44:19,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 04:44:19,874 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:19,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1148940206, now seen corresponding path program 1 times [2025-02-06 04:44:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880689273] [2025-02-06 04:44:19,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:19,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:19,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 04:44:19,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:19,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:19,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:19,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880689273] [2025-02-06 04:44:19,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880689273] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:19,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:19,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:19,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528559076] [2025-02-06 04:44:19,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:19,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:19,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:19,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:19,912 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:19,912 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) [2025-02-06 04:44:19,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:19,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:20,025 INFO L124 PetriNetUnfolderBase]: 371/649 cut-off events. [2025-02-06 04:44:20,025 INFO L125 PetriNetUnfolderBase]: For 5403/5403 co-relation queries the response was YES. [2025-02-06 04:44:20,027 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. [2025-02-06 04:44:20,030 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 98 selfloop transitions, 37 changer transitions 6/142 dead transitions. [2025-02-06 04:44:20,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 1950 flow [2025-02-06 04:44:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:44:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:44:20,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2025-02-06 04:44:20,031 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-06 04:44:20,031 INFO L175 Difference]: Start difference. First operand has 91 places, 110 transitions, 1431 flow. Second operand 7 states and 77 transitions. [2025-02-06 04:44:20,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 142 transitions, 1950 flow [2025-02-06 04:44:20,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 1932 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:20,043 INFO L231 Difference]: Finished difference. Result has 97 places, 111 transitions, 1565 flow [2025-02-06 04:44:20,043 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} [2025-02-06 04:44:20,043 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places. [2025-02-06 04:44:20,043 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 111 transitions, 1565 flow [2025-02-06 04:44:20,044 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) [2025-02-06 04:44:20,044 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:20,044 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:20,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 04:44:20,044 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:20,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:20,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1183354852, now seen corresponding path program 2 times [2025-02-06 04:44:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-02-06 04:44:20,045 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:20,047 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:20,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:20,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:20,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337709480] [2025-02-06 04:44:20,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337709480] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:20,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053613094] [2025-02-06 04:44:20,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:20,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:20,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:20,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:20,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 04:44:20,096 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:20,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:20,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:20,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:20,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:20,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053613094] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:20,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:20,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 04:44:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125408356] [2025-02-06 04:44:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:20,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:20,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:20,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:20,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:44:20,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:20,136 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) [2025-02-06 04:44:20,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:20,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:20,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:20,273 INFO L124 PetriNetUnfolderBase]: 444/787 cut-off events. [2025-02-06 04:44:20,273 INFO L125 PetriNetUnfolderBase]: For 7746/7746 co-relation queries the response was YES. [2025-02-06 04:44:20,276 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. [2025-02-06 04:44:20,280 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 128 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2025-02-06 04:44:20,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 166 transitions, 2384 flow [2025-02-06 04:44:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:44:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:44:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2025-02-06 04:44:20,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2025-02-06 04:44:20,281 INFO L175 Difference]: Start difference. First operand has 97 places, 111 transitions, 1565 flow. Second operand 6 states and 86 transitions. [2025-02-06 04:44:20,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 166 transitions, 2384 flow [2025-02-06 04:44:20,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 2192 flow, removed 50 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:20,297 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 1663 flow [2025-02-06 04:44:20,297 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} [2025-02-06 04:44:20,297 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 78 predicate places. [2025-02-06 04:44:20,297 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 1663 flow [2025-02-06 04:44:20,297 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) [2025-02-06 04:44:20,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:20,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:20,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:20,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:20,498 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:20,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash 173623545, now seen corresponding path program 2 times [2025-02-06 04:44:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585056896] [2025-02-06 04:44:20,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:20,506 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:20,512 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:20,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:20,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585056896] [2025-02-06 04:44:20,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585056896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:20,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619223863] [2025-02-06 04:44:20,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:20,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:20,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:20,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:20,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 04:44:20,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:20,583 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:20,583 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:20,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:20,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:20,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619223863] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:20,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 04:44:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83797833] [2025-02-06 04:44:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:20,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:20,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:20,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:20,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:44:20,618 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:20,619 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) [2025-02-06 04:44:20,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:20,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:20,751 INFO L124 PetriNetUnfolderBase]: 558/1011 cut-off events. [2025-02-06 04:44:20,751 INFO L125 PetriNetUnfolderBase]: For 8665/8665 co-relation queries the response was YES. [2025-02-06 04:44:20,753 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. [2025-02-06 04:44:20,757 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 126 selfloop transitions, 42 changer transitions 0/169 dead transitions. [2025-02-06 04:44:20,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 169 transitions, 2494 flow [2025-02-06 04:44:20,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:44:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:44:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 68 transitions. [2025-02-06 04:44:20,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2025-02-06 04:44:20,758 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 1663 flow. Second operand 5 states and 68 transitions. [2025-02-06 04:44:20,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 169 transitions, 2494 flow [2025-02-06 04:44:20,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 2414 flow, removed 16 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:20,777 INFO L231 Difference]: Finished difference. Result has 107 places, 129 transitions, 1909 flow [2025-02-06 04:44:20,777 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} [2025-02-06 04:44:20,777 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 83 predicate places. [2025-02-06 04:44:20,778 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 129 transitions, 1909 flow [2025-02-06 04:44:20,778 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) [2025-02-06 04:44:20,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:20,778 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:20,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 04:44:20,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:20,979 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:20,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash 360629290, now seen corresponding path program 3 times [2025-02-06 04:44:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:20,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145625381] [2025-02-06 04:44:20,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:20,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:20,984 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:20,984 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:20,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:21,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145625381] [2025-02-06 04:44:21,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145625381] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:21,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:21,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539948949] [2025-02-06 04:44:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:21,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:21,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:21,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:21,007 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:21,007 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) [2025-02-06 04:44:21,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:21,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:21,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:21,203 INFO L124 PetriNetUnfolderBase]: 504/916 cut-off events. [2025-02-06 04:44:21,204 INFO L125 PetriNetUnfolderBase]: For 9271/9271 co-relation queries the response was YES. [2025-02-06 04:44:21,206 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. [2025-02-06 04:44:21,209 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 129 selfloop transitions, 36 changer transitions 5/171 dead transitions. [2025-02-06 04:44:21,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 2552 flow [2025-02-06 04:44:21,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:21,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:21,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2025-02-06 04:44:21,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2025-02-06 04:44:21,211 INFO L175 Difference]: Start difference. First operand has 107 places, 129 transitions, 1909 flow. Second operand 8 states and 93 transitions. [2025-02-06 04:44:21,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 2552 flow [2025-02-06 04:44:21,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 171 transitions, 2510 flow, removed 17 selfloop flow, removed 2 redundant places. [2025-02-06 04:44:21,229 INFO L231 Difference]: Finished difference. Result has 112 places, 122 transitions, 1843 flow [2025-02-06 04:44:21,229 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} [2025-02-06 04:44:21,229 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 88 predicate places. [2025-02-06 04:44:21,229 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 122 transitions, 1843 flow [2025-02-06 04:44:21,229 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) [2025-02-06 04:44:21,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:21,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:21,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 04:44:21,230 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:21,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 529713679, now seen corresponding path program 3 times [2025-02-06 04:44:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:21,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143869850] [2025-02-06 04:44:21,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:21,234 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:21,237 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:21,237 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:21,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:21,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143869850] [2025-02-06 04:44:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143869850] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:21,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352302598] [2025-02-06 04:44:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:21,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:21,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:21,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:21,261 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:21,261 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) [2025-02-06 04:44:21,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:21,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:21,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:21,377 INFO L124 PetriNetUnfolderBase]: 465/840 cut-off events. [2025-02-06 04:44:21,377 INFO L125 PetriNetUnfolderBase]: For 8455/8455 co-relation queries the response was YES. [2025-02-06 04:44:21,380 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. [2025-02-06 04:44:21,386 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 119 selfloop transitions, 32 changer transitions 2/154 dead transitions. [2025-02-06 04:44:21,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 154 transitions, 2466 flow [2025-02-06 04:44:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:44:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:44:21,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2025-02-06 04:44:21,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2025-02-06 04:44:21,387 INFO L175 Difference]: Start difference. First operand has 112 places, 122 transitions, 1843 flow. Second operand 6 states and 68 transitions. [2025-02-06 04:44:21,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 154 transitions, 2466 flow [2025-02-06 04:44:21,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 154 transitions, 2382 flow, removed 18 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:21,404 INFO L231 Difference]: Finished difference. Result has 114 places, 119 transitions, 1790 flow [2025-02-06 04:44:21,404 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} [2025-02-06 04:44:21,405 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2025-02-06 04:44:21,405 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 119 transitions, 1790 flow [2025-02-06 04:44:21,405 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) [2025-02-06 04:44:21,405 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:21,405 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:21,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 04:44:21,405 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:21,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:21,406 INFO L85 PathProgramCache]: Analyzing trace with hash 97683250, now seen corresponding path program 4 times [2025-02-06 04:44:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:21,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908786364] [2025-02-06 04:44:21,406 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:21,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:21,409 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:21,413 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:21,413 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:21,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908786364] [2025-02-06 04:44:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908786364] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572667752] [2025-02-06 04:44:21,435 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:21,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:21,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:21,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:21,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 04:44:21,465 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:21,473 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:21,473 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:21,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:21,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572667752] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:21,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:21,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 04:44:21,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404818783] [2025-02-06 04:44:21,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:21,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:21,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:21,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:21,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:44:21,509 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:21,510 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) [2025-02-06 04:44:21,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:21,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:21,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:21,643 INFO L124 PetriNetUnfolderBase]: 515/936 cut-off events. [2025-02-06 04:44:21,644 INFO L125 PetriNetUnfolderBase]: For 10439/10439 co-relation queries the response was YES. [2025-02-06 04:44:21,646 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. [2025-02-06 04:44:21,649 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 103 selfloop transitions, 37 changer transitions 5/146 dead transitions. [2025-02-06 04:44:21,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 146 transitions, 2398 flow [2025-02-06 04:44:21,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:44:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:44:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2025-02-06 04:44:21,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-02-06 04:44:21,651 INFO L175 Difference]: Start difference. First operand has 114 places, 119 transitions, 1790 flow. Second operand 5 states and 60 transitions. [2025-02-06 04:44:21,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 146 transitions, 2398 flow [2025-02-06 04:44:21,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 146 transitions, 2325 flow, removed 27 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:21,667 INFO L231 Difference]: Finished difference. Result has 115 places, 116 transitions, 1851 flow [2025-02-06 04:44:21,667 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} [2025-02-06 04:44:21,668 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 91 predicate places. [2025-02-06 04:44:21,668 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 116 transitions, 1851 flow [2025-02-06 04:44:21,668 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) [2025-02-06 04:44:21,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:21,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:21,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:21,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-06 04:44:21,869 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:21,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:21,869 INFO L85 PathProgramCache]: Analyzing trace with hash -559664049, now seen corresponding path program 4 times [2025-02-06 04:44:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:21,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823952077] [2025-02-06 04:44:21,869 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:21,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:21,874 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:21,877 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:21,878 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:21,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823952077] [2025-02-06 04:44:21,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823952077] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098888425] [2025-02-06 04:44:21,895 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:21,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:21,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:21,901 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:21,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 04:44:21,924 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:21,931 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:21,932 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:21,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:21,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:21,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:21,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098888425] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:21,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:21,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2025-02-06 04:44:21,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100974836] [2025-02-06 04:44:21,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:21,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:21,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:21,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:21,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-02-06 04:44:21,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:21,975 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) [2025-02-06 04:44:21,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:21,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:21,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:22,100 INFO L124 PetriNetUnfolderBase]: 474/861 cut-off events. [2025-02-06 04:44:22,100 INFO L125 PetriNetUnfolderBase]: For 9841/9841 co-relation queries the response was YES. [2025-02-06 04:44:22,103 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. [2025-02-06 04:44:22,105 INFO L140 encePairwiseOnDemand]: 15/22 looper letters, 112 selfloop transitions, 46 changer transitions 2/161 dead transitions. [2025-02-06 04:44:22,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 161 transitions, 2585 flow [2025-02-06 04:44:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:44:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:44:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-02-06 04:44:22,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2025-02-06 04:44:22,106 INFO L175 Difference]: Start difference. First operand has 115 places, 116 transitions, 1851 flow. Second operand 6 states and 82 transitions. [2025-02-06 04:44:22,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 161 transitions, 2585 flow [2025-02-06 04:44:22,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 161 transitions, 2521 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:22,120 INFO L231 Difference]: Finished difference. Result has 118 places, 119 transitions, 1995 flow [2025-02-06 04:44:22,121 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} [2025-02-06 04:44:22,121 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 94 predicate places. [2025-02-06 04:44:22,121 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 119 transitions, 1995 flow [2025-02-06 04:44:22,121 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) [2025-02-06 04:44:22,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:22,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:22,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 04:44:22,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 04:44:22,322 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:22,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -69009956, now seen corresponding path program 5 times [2025-02-06 04:44:22,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:22,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833221777] [2025-02-06 04:44:22,323 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:22,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:22,325 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:22,327 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:22,327 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:22,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:22,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833221777] [2025-02-06 04:44:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833221777] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:22,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190637284] [2025-02-06 04:44:22,344 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:22,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:22,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:22,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:22,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 04:44:22,371 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:22,380 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:22,380 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:22,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:22,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 04:44:22,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:22,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:22,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190637284] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:22,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 04:44:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2025-02-06 04:44:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40154252] [2025-02-06 04:44:22,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:22,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:22,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:22,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:22,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:44:22,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:22,412 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) [2025-02-06 04:44:22,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:22,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:22,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:22,551 INFO L124 PetriNetUnfolderBase]: 434/790 cut-off events. [2025-02-06 04:44:22,551 INFO L125 PetriNetUnfolderBase]: For 9732/9732 co-relation queries the response was YES. [2025-02-06 04:44:22,553 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. [2025-02-06 04:44:22,556 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 109 selfloop transitions, 37 changer transitions 2/149 dead transitions. [2025-02-06 04:44:22,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 149 transitions, 2508 flow [2025-02-06 04:44:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:44:22,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:44:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2025-02-06 04:44:22,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2025-02-06 04:44:22,560 INFO L175 Difference]: Start difference. First operand has 118 places, 119 transitions, 1995 flow. Second operand 5 states and 65 transitions. [2025-02-06 04:44:22,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 149 transitions, 2508 flow [2025-02-06 04:44:22,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 149 transitions, 2342 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:22,580 INFO L231 Difference]: Finished difference. Result has 119 places, 118 transitions, 1876 flow [2025-02-06 04:44:22,580 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} [2025-02-06 04:44:22,581 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-02-06 04:44:22,581 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 1876 flow [2025-02-06 04:44:22,581 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) [2025-02-06 04:44:22,581 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:22,581 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:22,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:22,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-06 04:44:22,782 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:22,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1839973202, now seen corresponding path program 6 times [2025-02-06 04:44:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-02-06 04:44:22,782 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:22,786 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:22,788 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:22,788 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:22,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:22,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:22,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198486876] [2025-02-06 04:44:22,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198486876] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:22,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:22,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:22,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039632085] [2025-02-06 04:44:22,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:22,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:22,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:22,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:22,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:22,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:22,807 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) [2025-02-06 04:44:22,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:22,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:22,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:22,910 INFO L124 PetriNetUnfolderBase]: 378/687 cut-off events. [2025-02-06 04:44:22,910 INFO L125 PetriNetUnfolderBase]: For 7857/7857 co-relation queries the response was YES. [2025-02-06 04:44:22,913 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. [2025-02-06 04:44:22,915 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 108 selfloop transitions, 26 changer transitions 3/138 dead transitions. [2025-02-06 04:44:22,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 2297 flow [2025-02-06 04:44:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:44:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:44:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2025-02-06 04:44:22,916 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2025-02-06 04:44:22,916 INFO L175 Difference]: Start difference. First operand has 119 places, 118 transitions, 1876 flow. Second operand 6 states and 67 transitions. [2025-02-06 04:44:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 2297 flow [2025-02-06 04:44:22,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 2222 flow, removed 7 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:22,929 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 1704 flow [2025-02-06 04:44:22,929 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} [2025-02-06 04:44:22,930 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-02-06 04:44:22,930 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1704 flow [2025-02-06 04:44:22,930 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) [2025-02-06 04:44:22,931 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:22,931 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:22,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 04:44:22,931 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:22,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:22,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1216446581, now seen corresponding path program 5 times [2025-02-06 04:44:22,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:22,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139695622] [2025-02-06 04:44:22,932 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:22,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:22,933 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:22,935 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:22,935 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:22,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:22,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:22,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139695622] [2025-02-06 04:44:22,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139695622] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:22,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:22,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:22,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376762769] [2025-02-06 04:44:22,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:22,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:22,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:22,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:22,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:22,954 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:22,954 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) [2025-02-06 04:44:22,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:22,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:22,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:23,053 INFO L124 PetriNetUnfolderBase]: 360/657 cut-off events. [2025-02-06 04:44:23,053 INFO L125 PetriNetUnfolderBase]: For 7572/7572 co-relation queries the response was YES. [2025-02-06 04:44:23,054 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. [2025-02-06 04:44:23,056 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 89 selfloop transitions, 33 changer transitions 5/128 dead transitions. [2025-02-06 04:44:23,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 128 transitions, 2085 flow [2025-02-06 04:44:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:44:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:44:23,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2025-02-06 04:44:23,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2025-02-06 04:44:23,057 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 1704 flow. Second operand 7 states and 73 transitions. [2025-02-06 04:44:23,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 128 transitions, 2085 flow [2025-02-06 04:44:23,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 128 transitions, 1987 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:23,069 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 1591 flow [2025-02-06 04:44:23,069 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} [2025-02-06 04:44:23,069 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 95 predicate places. [2025-02-06 04:44:23,069 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 1591 flow [2025-02-06 04:44:23,069 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) [2025-02-06 04:44:23,070 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:23,070 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:23,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 04:44:23,070 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:23,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1582714951, now seen corresponding path program 6 times [2025-02-06 04:44:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480068948] [2025-02-06 04:44:23,070 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:23,072 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 18 statements into 2 equivalence classes. [2025-02-06 04:44:23,074 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 04:44:23,074 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:23,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:23,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:23,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480068948] [2025-02-06 04:44:23,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480068948] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:23,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:44:23,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:44:23,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937627445] [2025-02-06 04:44:23,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:23,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:44:23,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:23,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:44:23,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:44:23,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:23,101 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) [2025-02-06 04:44:23,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:23,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:23,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:23,206 INFO L124 PetriNetUnfolderBase]: 302/545 cut-off events. [2025-02-06 04:44:23,207 INFO L125 PetriNetUnfolderBase]: For 6358/6358 co-relation queries the response was YES. [2025-02-06 04:44:23,208 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. [2025-02-06 04:44:23,209 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 87 selfloop transitions, 33 changer transitions 3/124 dead transitions. [2025-02-06 04:44:23,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 124 transitions, 1953 flow [2025-02-06 04:44:23,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2025-02-06 04:44:23,210 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2025-02-06 04:44:23,210 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 1591 flow. Second operand 8 states and 83 transitions. [2025-02-06 04:44:23,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 124 transitions, 1953 flow [2025-02-06 04:44:23,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 1879 flow, removed 14 selfloop flow, removed 3 redundant places. [2025-02-06 04:44:23,220 INFO L231 Difference]: Finished difference. Result has 122 places, 92 transitions, 1436 flow [2025-02-06 04:44:23,220 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} [2025-02-06 04:44:23,220 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2025-02-06 04:44:23,220 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 92 transitions, 1436 flow [2025-02-06 04:44:23,220 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) [2025-02-06 04:44:23,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:23,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:23,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-06 04:44:23,221 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:23,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1224817727, now seen corresponding path program 1 times [2025-02-06 04:44:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285871292] [2025-02-06 04:44:23,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:23,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:23,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:23,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:23,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:23,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285871292] [2025-02-06 04:44:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285871292] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283296733] [2025-02-06 04:44:23,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:44:23,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:23,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:23,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:23,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 04:44:23,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:23,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:23,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:23,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:23,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:23,346 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:23,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283296733] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:23,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:23,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:23,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035733065] [2025-02-06 04:44:23,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:23,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:23,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:23,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:23,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:23,684 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:23,684 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) [2025-02-06 04:44:23,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:23,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:23,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:24,788 INFO L124 PetriNetUnfolderBase]: 694/1300 cut-off events. [2025-02-06 04:44:24,789 INFO L125 PetriNetUnfolderBase]: For 13324/13324 co-relation queries the response was YES. [2025-02-06 04:44:24,792 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. [2025-02-06 04:44:24,797 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 129 selfloop transitions, 87 changer transitions 68/285 dead transitions. [2025-02-06 04:44:24,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 285 transitions, 3898 flow [2025-02-06 04:44:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-06 04:44:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2025-02-06 04:44:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 310 transitions. [2025-02-06 04:44:24,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2025-02-06 04:44:24,800 INFO L175 Difference]: Start difference. First operand has 122 places, 92 transitions, 1436 flow. Second operand 36 states and 310 transitions. [2025-02-06 04:44:24,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 285 transitions, 3898 flow [2025-02-06 04:44:24,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 285 transitions, 3620 flow, removed 17 selfloop flow, removed 8 redundant places. [2025-02-06 04:44:24,837 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 2254 flow [2025-02-06 04:44:24,838 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} [2025-02-06 04:44:24,839 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2025-02-06 04:44:24,839 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 2254 flow [2025-02-06 04:44:24,839 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) [2025-02-06 04:44:24,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:24,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:24,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 04:44:25,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:25,040 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:25,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash 277842129, now seen corresponding path program 2 times [2025-02-06 04:44:25,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:25,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357397192] [2025-02-06 04:44:25,041 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:25,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:25,046 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:25,048 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:25,048 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:25,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:25,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357397192] [2025-02-06 04:44:25,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357397192] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:25,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701474960] [2025-02-06 04:44:25,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:25,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:25,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:25,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:25,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 04:44:25,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:25,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:25,175 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:25,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:25,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:25,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:25,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701474960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:25,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:25,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:25,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737663410] [2025-02-06 04:44:25,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:25,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:25,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:25,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:25,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:25,454 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) [2025-02-06 04:44:25,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:25,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:25,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:25,874 INFO L124 PetriNetUnfolderBase]: 751/1463 cut-off events. [2025-02-06 04:44:25,874 INFO L125 PetriNetUnfolderBase]: For 17119/17119 co-relation queries the response was YES. [2025-02-06 04:44:25,878 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. [2025-02-06 04:44:25,881 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 102 selfloop transitions, 99 changer transitions 12/214 dead transitions. [2025-02-06 04:44:25,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 214 transitions, 3743 flow [2025-02-06 04:44:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:25,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 121 transitions. [2025-02-06 04:44:25,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2025-02-06 04:44:25,882 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 2254 flow. Second operand 13 states and 121 transitions. [2025-02-06 04:44:25,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 214 transitions, 3743 flow [2025-02-06 04:44:25,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 214 transitions, 2921 flow, removed 240 selfloop flow, removed 17 redundant places. [2025-02-06 04:44:25,912 INFO L231 Difference]: Finished difference. Result has 147 places, 161 transitions, 2350 flow [2025-02-06 04:44:25,913 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} [2025-02-06 04:44:25,913 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 123 predicate places. [2025-02-06 04:44:25,913 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 161 transitions, 2350 flow [2025-02-06 04:44:25,913 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) [2025-02-06 04:44:25,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:25,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:25,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 04:44:26,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:26,118 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:26,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:26,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1782706343, now seen corresponding path program 3 times [2025-02-06 04:44:26,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52911317] [2025-02-06 04:44:26,119 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:26,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:26,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:26,123 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:26,123 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:26,123 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:26,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52911317] [2025-02-06 04:44:26,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52911317] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:26,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166515394] [2025-02-06 04:44:26,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:26,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:26,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:26,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:26,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 04:44:26,238 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:26,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:26,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:26,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:26,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:26,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:26,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:26,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166515394] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:26,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171812901] [2025-02-06 04:44:26,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:26,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:26,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:26,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:26,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:26,494 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:26,494 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) [2025-02-06 04:44:26,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:26,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:26,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:27,055 INFO L124 PetriNetUnfolderBase]: 896/1776 cut-off events. [2025-02-06 04:44:27,055 INFO L125 PetriNetUnfolderBase]: For 16568/16568 co-relation queries the response was YES. [2025-02-06 04:44:27,061 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. [2025-02-06 04:44:27,068 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 86 selfloop transitions, 153 changer transitions 12/252 dead transitions. [2025-02-06 04:44:27,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 252 transitions, 3900 flow [2025-02-06 04:44:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:44:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:44:27,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-02-06 04:44:27,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-02-06 04:44:27,069 INFO L175 Difference]: Start difference. First operand has 147 places, 161 transitions, 2350 flow. Second operand 17 states and 147 transitions. [2025-02-06 04:44:27,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 252 transitions, 3900 flow [2025-02-06 04:44:27,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 252 transitions, 3767 flow, removed 33 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:27,104 INFO L231 Difference]: Finished difference. Result has 164 places, 205 transitions, 3435 flow [2025-02-06 04:44:27,104 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} [2025-02-06 04:44:27,105 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 140 predicate places. [2025-02-06 04:44:27,105 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 205 transitions, 3435 flow [2025-02-06 04:44:27,105 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) [2025-02-06 04:44:27,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:27,105 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:27,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 04:44:27,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:27,306 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:27,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash 477455249, now seen corresponding path program 4 times [2025-02-06 04:44:27,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:27,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17157656] [2025-02-06 04:44:27,307 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:27,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:27,309 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:27,311 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:27,311 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:27,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:27,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:27,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17157656] [2025-02-06 04:44:27,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17157656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:27,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254962303] [2025-02-06 04:44:27,435 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:27,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:27,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:27,437 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:27,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 04:44:27,464 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:27,474 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:27,474 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:27,474 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:27,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:27,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:27,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:27,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:27,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254962303] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:27,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:27,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-02-06 04:44:27,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035357969] [2025-02-06 04:44:27,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:27,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 04:44:27,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:27,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 04:44:27,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2025-02-06 04:44:27,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:27,802 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) [2025-02-06 04:44:27,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:27,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:27,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:28,334 INFO L124 PetriNetUnfolderBase]: 874/1728 cut-off events. [2025-02-06 04:44:28,335 INFO L125 PetriNetUnfolderBase]: For 19443/19443 co-relation queries the response was YES. [2025-02-06 04:44:28,340 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. [2025-02-06 04:44:28,345 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 88 selfloop transitions, 146 changer transitions 17/252 dead transitions. [2025-02-06 04:44:28,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 252 transitions, 4275 flow [2025-02-06 04:44:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 04:44:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 04:44:28,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 147 transitions. [2025-02-06 04:44:28,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2025-02-06 04:44:28,346 INFO L175 Difference]: Start difference. First operand has 164 places, 205 transitions, 3435 flow. Second operand 17 states and 147 transitions. [2025-02-06 04:44:28,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 252 transitions, 4275 flow [2025-02-06 04:44:28,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 252 transitions, 4056 flow, removed 89 selfloop flow, removed 4 redundant places. [2025-02-06 04:44:28,425 INFO L231 Difference]: Finished difference. Result has 177 places, 202 transitions, 3462 flow [2025-02-06 04:44:28,426 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} [2025-02-06 04:44:28,426 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 153 predicate places. [2025-02-06 04:44:28,426 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 202 transitions, 3462 flow [2025-02-06 04:44:28,426 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) [2025-02-06 04:44:28,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:28,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:28,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 04:44:28,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:28,627 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:28,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1772885901, now seen corresponding path program 5 times [2025-02-06 04:44:28,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:28,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027195315] [2025-02-06 04:44:28,627 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:28,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:28,630 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:28,632 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:28,632 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:28,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:28,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027195315] [2025-02-06 04:44:28,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027195315] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:28,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817918826] [2025-02-06 04:44:28,725 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:28,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:28,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:28,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:28,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 04:44:28,751 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:28,758 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:28,758 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:28,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:28,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:44:28,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:28,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:44:28,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817918826] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:28,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:44:28,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-02-06 04:44:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365359354] [2025-02-06 04:44:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:28,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:28,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:28,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:28,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:44:28,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:28,857 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) [2025-02-06 04:44:28,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:28,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:28,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:29,060 INFO L124 PetriNetUnfolderBase]: 802/1568 cut-off events. [2025-02-06 04:44:29,060 INFO L125 PetriNetUnfolderBase]: For 19428/19428 co-relation queries the response was YES. [2025-02-06 04:44:29,065 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. [2025-02-06 04:44:29,068 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 124 selfloop transitions, 63 changer transitions 45/233 dead transitions. [2025-02-06 04:44:29,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 233 transitions, 4278 flow [2025-02-06 04:44:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:29,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-02-06 04:44:29,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2025-02-06 04:44:29,070 INFO L175 Difference]: Start difference. First operand has 177 places, 202 transitions, 3462 flow. Second operand 9 states and 83 transitions. [2025-02-06 04:44:29,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 233 transitions, 4278 flow [2025-02-06 04:44:29,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 233 transitions, 4016 flow, removed 8 selfloop flow, removed 14 redundant places. [2025-02-06 04:44:29,112 INFO L231 Difference]: Finished difference. Result has 171 places, 175 transitions, 2851 flow [2025-02-06 04:44:29,112 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} [2025-02-06 04:44:29,112 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 147 predicate places. [2025-02-06 04:44:29,112 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 175 transitions, 2851 flow [2025-02-06 04:44:29,112 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) [2025-02-06 04:44:29,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:29,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:29,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 04:44:29,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-06 04:44:29,313 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:29,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 391749731, now seen corresponding path program 6 times [2025-02-06 04:44:29,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:29,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145259747] [2025-02-06 04:44:29,313 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:29,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:29,315 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:29,317 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:29,317 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:29,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145259747] [2025-02-06 04:44:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145259747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274419495] [2025-02-06 04:44:29,425 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:29,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:29,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:29,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:29,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 04:44:29,453 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:29,461 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:29,462 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:29,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:29,462 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:29,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:29,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274419495] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:29,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824278426] [2025-02-06 04:44:29,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:29,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:29,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:29,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:29,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:29,781 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) [2025-02-06 04:44:29,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:29,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:29,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:30,122 INFO L124 PetriNetUnfolderBase]: 758/1518 cut-off events. [2025-02-06 04:44:30,122 INFO L125 PetriNetUnfolderBase]: For 16785/16785 co-relation queries the response was YES. [2025-02-06 04:44:30,126 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. [2025-02-06 04:44:30,130 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 101 changer transitions 23/216 dead transitions. [2025-02-06 04:44:30,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 216 transitions, 3665 flow [2025-02-06 04:44:30,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:44:30,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:44:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2025-02-06 04:44:30,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2025-02-06 04:44:30,131 INFO L175 Difference]: Start difference. First operand has 171 places, 175 transitions, 2851 flow. Second operand 12 states and 112 transitions. [2025-02-06 04:44:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 216 transitions, 3665 flow [2025-02-06 04:44:30,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 216 transitions, 3367 flow, removed 27 selfloop flow, removed 16 redundant places. [2025-02-06 04:44:30,164 INFO L231 Difference]: Finished difference. Result has 158 places, 163 transitions, 2674 flow [2025-02-06 04:44:30,165 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} [2025-02-06 04:44:30,165 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2025-02-06 04:44:30,165 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 163 transitions, 2674 flow [2025-02-06 04:44:30,165 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) [2025-02-06 04:44:30,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:30,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:30,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 04:44:30,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:30,366 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:30,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash -660834713, now seen corresponding path program 7 times [2025-02-06 04:44:30,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:30,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-02-06 04:44:30,366 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:30,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:30,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:30,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:30,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:30,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:30,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-02-06 04:44:30,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878172502] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:30,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885388720] [2025-02-06 04:44:30,457 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:30,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:30,459 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:30,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 04:44:30,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:30,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:30,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:30,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:30,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:30,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:30,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:30,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:30,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885388720] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:30,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:30,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253346455] [2025-02-06 04:44:30,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:30,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:30,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:30,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:30,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:30,732 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) [2025-02-06 04:44:30,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:30,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:30,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:31,092 INFO L124 PetriNetUnfolderBase]: 731/1460 cut-off events. [2025-02-06 04:44:31,092 INFO L125 PetriNetUnfolderBase]: For 15061/15061 co-relation queries the response was YES. [2025-02-06 04:44:31,097 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. [2025-02-06 04:44:31,100 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 84 selfloop transitions, 85 changer transitions 26/196 dead transitions. [2025-02-06 04:44:31,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 196 transitions, 3383 flow [2025-02-06 04:44:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:44:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:44:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions. [2025-02-06 04:44:31,102 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2025-02-06 04:44:31,102 INFO L175 Difference]: Start difference. First operand has 158 places, 163 transitions, 2674 flow. Second operand 12 states and 104 transitions. [2025-02-06 04:44:31,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 196 transitions, 3383 flow [2025-02-06 04:44:31,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 196 transitions, 3332 flow, removed 10 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:31,135 INFO L231 Difference]: Finished difference. Result has 163 places, 148 transitions, 2516 flow [2025-02-06 04:44:31,135 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} [2025-02-06 04:44:31,136 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 139 predicate places. [2025-02-06 04:44:31,136 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 148 transitions, 2516 flow [2025-02-06 04:44:31,136 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) [2025-02-06 04:44:31,136 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:31,136 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:31,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 04:44:31,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:31,340 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:31,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:31,341 INFO L85 PathProgramCache]: Analyzing trace with hash -632085999, now seen corresponding path program 8 times [2025-02-06 04:44:31,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:31,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261243790] [2025-02-06 04:44:31,341 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:31,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:31,343 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:31,345 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:31,345 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:31,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:31,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:31,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261243790] [2025-02-06 04:44:31,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261243790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:31,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604942768] [2025-02-06 04:44:31,423 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:31,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:31,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:31,425 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:31,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 04:44:31,450 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:31,462 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:31,463 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:31,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:31,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:31,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:31,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604942768] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:31,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:31,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:31,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226669371] [2025-02-06 04:44:31,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:31,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:31,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:31,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:31,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:31,863 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:31,863 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) [2025-02-06 04:44:31,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:31,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:31,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:32,200 INFO L124 PetriNetUnfolderBase]: 650/1262 cut-off events. [2025-02-06 04:44:32,200 INFO L125 PetriNetUnfolderBase]: For 14685/14685 co-relation queries the response was YES. [2025-02-06 04:44:32,205 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. [2025-02-06 04:44:32,208 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 75 selfloop transitions, 62 changer transitions 51/189 dead transitions. [2025-02-06 04:44:32,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 189 transitions, 3274 flow [2025-02-06 04:44:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 111 transitions. [2025-02-06 04:44:32,208 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3881118881118881 [2025-02-06 04:44:32,209 INFO L175 Difference]: Start difference. First operand has 163 places, 148 transitions, 2516 flow. Second operand 13 states and 111 transitions. [2025-02-06 04:44:32,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 189 transitions, 3274 flow [2025-02-06 04:44:32,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 189 transitions, 3029 flow, removed 1 selfloop flow, removed 11 redundant places. [2025-02-06 04:44:32,237 INFO L231 Difference]: Finished difference. Result has 159 places, 116 transitions, 1850 flow [2025-02-06 04:44:32,237 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} [2025-02-06 04:44:32,237 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2025-02-06 04:44:32,237 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 116 transitions, 1850 flow [2025-02-06 04:44:32,237 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) [2025-02-06 04:44:32,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:32,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:32,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:32,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-06 04:44:32,438 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:32,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:32,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2056163371, now seen corresponding path program 9 times [2025-02-06 04:44:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:32,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943276822] [2025-02-06 04:44:32,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:32,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:32,440 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:32,442 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:32,442 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:32,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:32,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:32,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943276822] [2025-02-06 04:44:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943276822] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717610554] [2025-02-06 04:44:32,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:32,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:32,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:32,522 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:32,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 04:44:32,547 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:32,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:32,555 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:32,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:32,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:32,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:32,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717610554] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:32,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:32,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-02-06 04:44:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289152375] [2025-02-06 04:44:32,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:32,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 04:44:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:32,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 04:44:32,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2025-02-06 04:44:32,839 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:32,839 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) [2025-02-06 04:44:32,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:32,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:32,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:33,699 INFO L124 PetriNetUnfolderBase]: 789/1575 cut-off events. [2025-02-06 04:44:33,700 INFO L125 PetriNetUnfolderBase]: For 16612/16612 co-relation queries the response was YES. [2025-02-06 04:44:33,703 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. [2025-02-06 04:44:33,706 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 135 selfloop transitions, 134 changer transitions 17/287 dead transitions. [2025-02-06 04:44:33,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 287 transitions, 4532 flow [2025-02-06 04:44:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 04:44:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2025-02-06 04:44:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 268 transitions. [2025-02-06 04:44:33,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3582887700534759 [2025-02-06 04:44:33,708 INFO L175 Difference]: Start difference. First operand has 159 places, 116 transitions, 1850 flow. Second operand 34 states and 268 transitions. [2025-02-06 04:44:33,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 287 transitions, 4532 flow [2025-02-06 04:44:33,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 287 transitions, 4146 flow, removed 24 selfloop flow, removed 19 redundant places. [2025-02-06 04:44:33,737 INFO L231 Difference]: Finished difference. Result has 174 places, 196 transitions, 3338 flow [2025-02-06 04:44:33,737 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} [2025-02-06 04:44:33,737 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 150 predicate places. [2025-02-06 04:44:33,738 INFO L471 AbstractCegarLoop]: Abstraction has has 174 places, 196 transitions, 3338 flow [2025-02-06 04:44:33,738 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) [2025-02-06 04:44:33,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:33,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:33,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:33,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-06 04:44:33,939 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:33,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:33,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1374628063, now seen corresponding path program 10 times [2025-02-06 04:44:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392429004] [2025-02-06 04:44:33,940 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:33,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:33,942 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:33,943 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:33,943 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:33,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:34,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392429004] [2025-02-06 04:44:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392429004] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670016616] [2025-02-06 04:44:34,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:34,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:34,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:34,018 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:34,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 04:44:34,041 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:34,048 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:34,048 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:34,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:34,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:34,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:34,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:34,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:34,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670016616] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:34,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:34,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:34,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794317043] [2025-02-06 04:44:34,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:34,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:34,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:34,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:34,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:34,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:34,295 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) [2025-02-06 04:44:34,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:34,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:34,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:34,828 INFO L124 PetriNetUnfolderBase]: 951/1889 cut-off events. [2025-02-06 04:44:34,828 INFO L125 PetriNetUnfolderBase]: For 21117/21117 co-relation queries the response was YES. [2025-02-06 04:44:34,833 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. [2025-02-06 04:44:34,837 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 133 selfloop transitions, 138 changer transitions 24/296 dead transitions. [2025-02-06 04:44:34,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 296 transitions, 5229 flow [2025-02-06 04:44:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 04:44:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 04:44:34,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 154 transitions. [2025-02-06 04:44:34,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2025-02-06 04:44:34,838 INFO L175 Difference]: Start difference. First operand has 174 places, 196 transitions, 3338 flow. Second operand 18 states and 154 transitions. [2025-02-06 04:44:34,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 296 transitions, 5229 flow [2025-02-06 04:44:34,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 296 transitions, 4628 flow, removed 234 selfloop flow, removed 12 redundant places. [2025-02-06 04:44:34,891 INFO L231 Difference]: Finished difference. Result has 182 places, 225 transitions, 3772 flow [2025-02-06 04:44:34,892 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} [2025-02-06 04:44:34,893 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 158 predicate places. [2025-02-06 04:44:34,893 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 225 transitions, 3772 flow [2025-02-06 04:44:34,893 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) [2025-02-06 04:44:34,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:34,893 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:34,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 04:44:35,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:35,094 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:35,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:35,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1606474555, now seen corresponding path program 11 times [2025-02-06 04:44:35,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:35,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514919853] [2025-02-06 04:44:35,095 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:35,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:35,097 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:35,099 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:35,099 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:35,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514919853] [2025-02-06 04:44:35,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514919853] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389694609] [2025-02-06 04:44:35,156 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:35,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:35,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:35,158 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:35,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 04:44:35,182 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:35,190 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:35,190 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:35,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:35,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:44:35,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:35,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:44:35,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389694609] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:35,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:44:35,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2025-02-06 04:44:35,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277116467] [2025-02-06 04:44:35,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:35,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:35,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:35,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:44:35,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:35,256 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) [2025-02-06 04:44:35,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:35,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:35,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:35,495 INFO L124 PetriNetUnfolderBase]: 906/1797 cut-off events. [2025-02-06 04:44:35,495 INFO L125 PetriNetUnfolderBase]: For 21328/21328 co-relation queries the response was YES. [2025-02-06 04:44:35,500 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. [2025-02-06 04:44:35,504 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 129 selfloop transitions, 65 changer transitions 53/248 dead transitions. [2025-02-06 04:44:35,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 248 transitions, 4429 flow [2025-02-06 04:44:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:35,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 82 transitions. [2025-02-06 04:44:35,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2025-02-06 04:44:35,505 INFO L175 Difference]: Start difference. First operand has 182 places, 225 transitions, 3772 flow. Second operand 9 states and 82 transitions. [2025-02-06 04:44:35,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 248 transitions, 4429 flow [2025-02-06 04:44:35,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 248 transitions, 4312 flow, removed 19 selfloop flow, removed 10 redundant places. [2025-02-06 04:44:35,564 INFO L231 Difference]: Finished difference. Result has 181 places, 183 transitions, 3071 flow [2025-02-06 04:44:35,565 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} [2025-02-06 04:44:35,566 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 157 predicate places. [2025-02-06 04:44:35,566 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 183 transitions, 3071 flow [2025-02-06 04:44:35,566 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) [2025-02-06 04:44:35,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:35,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:35,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:35,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 04:44:35,767 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:35,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481725, now seen corresponding path program 12 times [2025-02-06 04:44:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:35,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816912304] [2025-02-06 04:44:35,768 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:35,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:35,771 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:35,772 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:35,773 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:35,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816912304] [2025-02-06 04:44:35,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816912304] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737308787] [2025-02-06 04:44:35,849 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:35,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:35,855 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:35,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 04:44:35,882 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:35,890 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:35,890 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:35,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:35,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:35,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:35,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:36,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:36,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737308787] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:36,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:36,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-02-06 04:44:36,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879264771] [2025-02-06 04:44:36,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:36,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 04:44:36,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:36,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 04:44:36,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2025-02-06 04:44:36,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:36,121 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) [2025-02-06 04:44:36,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:36,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:36,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:36,765 INFO L124 PetriNetUnfolderBase]: 784/1599 cut-off events. [2025-02-06 04:44:36,765 INFO L125 PetriNetUnfolderBase]: For 18951/18951 co-relation queries the response was YES. [2025-02-06 04:44:36,770 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. [2025-02-06 04:44:36,773 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 85 selfloop transitions, 147 changer transitions 28/261 dead transitions. [2025-02-06 04:44:36,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 261 transitions, 4365 flow [2025-02-06 04:44:36,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 04:44:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-02-06 04:44:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 201 transitions. [2025-02-06 04:44:36,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3383838383838384 [2025-02-06 04:44:36,775 INFO L175 Difference]: Start difference. First operand has 181 places, 183 transitions, 3071 flow. Second operand 27 states and 201 transitions. [2025-02-06 04:44:36,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 261 transitions, 4365 flow [2025-02-06 04:44:36,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 261 transitions, 4155 flow, removed 18 selfloop flow, removed 13 redundant places. [2025-02-06 04:44:36,822 INFO L231 Difference]: Finished difference. Result has 198 places, 200 transitions, 3676 flow [2025-02-06 04:44:36,823 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} [2025-02-06 04:44:36,823 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2025-02-06 04:44:36,823 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 200 transitions, 3676 flow [2025-02-06 04:44:36,823 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) [2025-02-06 04:44:36,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:36,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:36,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 04:44:37,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-06 04:44:37,024 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:37,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash -972430153, now seen corresponding path program 13 times [2025-02-06 04:44:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:37,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918769907] [2025-02-06 04:44:37,024 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:37,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:37,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:37,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:37,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:37,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918769907] [2025-02-06 04:44:37,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918769907] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:37,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773026037] [2025-02-06 04:44:37,096 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:37,101 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:37,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 04:44:37,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:37,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:37,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:37,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:37,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:37,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:37,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:37,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:37,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:37,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773026037] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:37,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:37,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-02-06 04:44:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625379803] [2025-02-06 04:44:37,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:37,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-06 04:44:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:37,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-06 04:44:37,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-02-06 04:44:37,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:37,604 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) [2025-02-06 04:44:37,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:37,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:37,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:38,358 INFO L124 PetriNetUnfolderBase]: 789/1610 cut-off events. [2025-02-06 04:44:38,358 INFO L125 PetriNetUnfolderBase]: For 23651/23651 co-relation queries the response was YES. [2025-02-06 04:44:38,364 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. [2025-02-06 04:44:38,368 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 138 changer transitions 24/255 dead transitions. [2025-02-06 04:44:38,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 255 transitions, 4596 flow [2025-02-06 04:44:38,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 04:44:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 04:44:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 187 transitions. [2025-02-06 04:44:38,369 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34 [2025-02-06 04:44:38,369 INFO L175 Difference]: Start difference. First operand has 198 places, 200 transitions, 3676 flow. Second operand 25 states and 187 transitions. [2025-02-06 04:44:38,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 255 transitions, 4596 flow [2025-02-06 04:44:38,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 255 transitions, 4475 flow, removed 48 selfloop flow, removed 7 redundant places. [2025-02-06 04:44:38,460 INFO L231 Difference]: Finished difference. Result has 213 places, 197 transitions, 3835 flow [2025-02-06 04:44:38,460 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} [2025-02-06 04:44:38,461 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 189 predicate places. [2025-02-06 04:44:38,461 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 197 transitions, 3835 flow [2025-02-06 04:44:38,462 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) [2025-02-06 04:44:38,462 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:38,462 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:38,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 04:44:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:38,662 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:38,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:38,663 INFO L85 PathProgramCache]: Analyzing trace with hash -29776209, now seen corresponding path program 14 times [2025-02-06 04:44:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:38,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131594846] [2025-02-06 04:44:38,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:38,666 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:38,670 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:38,670 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:38,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:38,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:38,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131594846] [2025-02-06 04:44:38,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131594846] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:38,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540549883] [2025-02-06 04:44:38,779 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:38,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:38,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:38,781 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:38,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 04:44:38,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:38,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:38,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:38,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:38,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:38,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:38,887 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540549883] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:39,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:39,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2025-02-06 04:44:39,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184082700] [2025-02-06 04:44:39,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:39,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 04:44:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:39,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 04:44:39,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-02-06 04:44:39,066 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:39,066 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) [2025-02-06 04:44:39,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:39,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:39,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:39,678 INFO L124 PetriNetUnfolderBase]: 841/1757 cut-off events. [2025-02-06 04:44:39,678 INFO L125 PetriNetUnfolderBase]: For 25660/25660 co-relation queries the response was YES. [2025-02-06 04:44:39,683 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. [2025-02-06 04:44:39,687 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 91 selfloop transitions, 148 changer transitions 31/271 dead transitions. [2025-02-06 04:44:39,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 5226 flow [2025-02-06 04:44:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 04:44:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-02-06 04:44:39,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 180 transitions. [2025-02-06 04:44:39,688 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2025-02-06 04:44:39,688 INFO L175 Difference]: Start difference. First operand has 213 places, 197 transitions, 3835 flow. Second operand 22 states and 180 transitions. [2025-02-06 04:44:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 5226 flow [2025-02-06 04:44:39,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 271 transitions, 4972 flow, removed 31 selfloop flow, removed 16 redundant places. [2025-02-06 04:44:39,746 INFO L231 Difference]: Finished difference. Result has 214 places, 203 transitions, 4071 flow [2025-02-06 04:44:39,746 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} [2025-02-06 04:44:39,747 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 190 predicate places. [2025-02-06 04:44:39,747 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 203 transitions, 4071 flow [2025-02-06 04:44:39,747 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) [2025-02-06 04:44:39,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:39,747 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:39,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:39,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:39,952 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:39,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 862639675, now seen corresponding path program 15 times [2025-02-06 04:44:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048671794] [2025-02-06 04:44:39,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:39,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:39,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:39,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:39,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:40,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048671794] [2025-02-06 04:44:40,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048671794] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:40,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453670183] [2025-02-06 04:44:40,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:40,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:40,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:40,033 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:40,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 04:44:40,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:40,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:40,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:40,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:40,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:40,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:40,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:40,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453670183] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:40,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:40,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550253757] [2025-02-06 04:44:40,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:40,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:40,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:40,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:40,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:40,300 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:40,300 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) [2025-02-06 04:44:40,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:40,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:40,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:40,733 INFO L124 PetriNetUnfolderBase]: 851/1798 cut-off events. [2025-02-06 04:44:40,734 INFO L125 PetriNetUnfolderBase]: For 25749/25749 co-relation queries the response was YES. [2025-02-06 04:44:40,739 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. [2025-02-06 04:44:40,743 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 105 selfloop transitions, 88 changer transitions 62/256 dead transitions. [2025-02-06 04:44:40,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 256 transitions, 5292 flow [2025-02-06 04:44:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 112 transitions. [2025-02-06 04:44:40,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2025-02-06 04:44:40,744 INFO L175 Difference]: Start difference. First operand has 214 places, 203 transitions, 4071 flow. Second operand 13 states and 112 transitions. [2025-02-06 04:44:40,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 256 transitions, 5292 flow [2025-02-06 04:44:40,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 256 transitions, 4733 flow, removed 60 selfloop flow, removed 16 redundant places. [2025-02-06 04:44:40,804 INFO L231 Difference]: Finished difference. Result has 211 places, 170 transitions, 3294 flow [2025-02-06 04:44:40,805 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} [2025-02-06 04:44:40,805 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 187 predicate places. [2025-02-06 04:44:40,805 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 170 transitions, 3294 flow [2025-02-06 04:44:40,805 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) [2025-02-06 04:44:40,805 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:40,805 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:40,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 04:44:41,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-02-06 04:44:41,006 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:41,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1714465127, now seen corresponding path program 16 times [2025-02-06 04:44:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:41,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25856863] [2025-02-06 04:44:41,007 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:41,009 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:41,010 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:41,010 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:41,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:41,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:41,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25856863] [2025-02-06 04:44:41,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25856863] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:41,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654258966] [2025-02-06 04:44:41,081 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:41,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:41,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:41,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:41,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 04:44:41,110 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:41,119 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:41,119 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:41,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:41,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:41,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:41,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654258966] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:41,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654712134] [2025-02-06 04:44:41,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:41,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:41,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:41,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:41,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:41,376 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) [2025-02-06 04:44:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:42,011 INFO L124 PetriNetUnfolderBase]: 777/1660 cut-off events. [2025-02-06 04:44:42,011 INFO L125 PetriNetUnfolderBase]: For 22007/22007 co-relation queries the response was YES. [2025-02-06 04:44:42,016 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. [2025-02-06 04:44:42,019 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 104 selfloop transitions, 136 changer transitions 30/271 dead transitions. [2025-02-06 04:44:42,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 5322 flow [2025-02-06 04:44:42,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 04:44:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-02-06 04:44:42,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 214 transitions. [2025-02-06 04:44:42,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3741258741258741 [2025-02-06 04:44:42,020 INFO L175 Difference]: Start difference. First operand has 211 places, 170 transitions, 3294 flow. Second operand 26 states and 214 transitions. [2025-02-06 04:44:42,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 5322 flow [2025-02-06 04:44:42,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 271 transitions, 4769 flow, removed 83 selfloop flow, removed 18 redundant places. [2025-02-06 04:44:42,071 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 4002 flow [2025-02-06 04:44:42,071 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} [2025-02-06 04:44:42,072 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 192 predicate places. [2025-02-06 04:44:42,072 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 4002 flow [2025-02-06 04:44:42,072 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) [2025-02-06 04:44:42,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:42,072 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:42,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 04:44:42,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2025-02-06 04:44:42,273 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:42,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 978724045, now seen corresponding path program 17 times [2025-02-06 04:44:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100659305] [2025-02-06 04:44:42,273 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:42,275 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:42,276 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:42,276 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:42,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:42,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100659305] [2025-02-06 04:44:42,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100659305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:42,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310746365] [2025-02-06 04:44:42,329 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:42,332 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:42,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 04:44:42,358 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:42,365 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:42,365 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:42,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:42,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:44:42,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:42,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:42,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:44:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310746365] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:44:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2025-02-06 04:44:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306127784] [2025-02-06 04:44:42,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:42,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:42,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:42,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-02-06 04:44:42,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:42,420 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) [2025-02-06 04:44:42,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:42,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:42,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:42,630 INFO L124 PetriNetUnfolderBase]: 718/1524 cut-off events. [2025-02-06 04:44:42,630 INFO L125 PetriNetUnfolderBase]: For 18363/18363 co-relation queries the response was YES. [2025-02-06 04:44:42,635 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. [2025-02-06 04:44:42,638 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 101 selfloop transitions, 105 changer transitions 17/224 dead transitions. [2025-02-06 04:44:42,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 224 transitions, 4751 flow [2025-02-06 04:44:42,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2025-02-06 04:44:42,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2025-02-06 04:44:42,639 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 4002 flow. Second operand 9 states and 79 transitions. [2025-02-06 04:44:42,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 224 transitions, 4751 flow [2025-02-06 04:44:42,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 224 transitions, 4406 flow, removed 99 selfloop flow, removed 16 redundant places. [2025-02-06 04:44:42,686 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 3790 flow [2025-02-06 04:44:42,687 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} [2025-02-06 04:44:42,687 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 181 predicate places. [2025-02-06 04:44:42,687 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 3790 flow [2025-02-06 04:44:42,687 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) [2025-02-06 04:44:42,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:42,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:42,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 04:44:42,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-02-06 04:44:42,888 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:42,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 782242717, now seen corresponding path program 18 times [2025-02-06 04:44:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:42,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334140648] [2025-02-06 04:44:42,889 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:42,892 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:42,894 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:42,894 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:42,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334140648] [2025-02-06 04:44:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334140648] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:42,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143240730] [2025-02-06 04:44:42,980 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:42,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:42,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:42,982 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:42,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 04:44:43,005 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:43,017 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:43,017 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:43,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:43,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:43,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:43,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:43,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143240730] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:43,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:43,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672851895] [2025-02-06 04:44:43,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:43,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:43,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:43,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:43,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:43,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:43,269 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) [2025-02-06 04:44:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:43,618 INFO L124 PetriNetUnfolderBase]: 680/1439 cut-off events. [2025-02-06 04:44:43,618 INFO L125 PetriNetUnfolderBase]: For 17169/17169 co-relation queries the response was YES. [2025-02-06 04:44:43,622 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. [2025-02-06 04:44:43,625 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 114 selfloop transitions, 92 changer transitions 19/226 dead transitions. [2025-02-06 04:44:43,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 226 transitions, 4412 flow [2025-02-06 04:44:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 04:44:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 04:44:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 114 transitions. [2025-02-06 04:44:43,626 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2025-02-06 04:44:43,626 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 3790 flow. Second operand 14 states and 114 transitions. [2025-02-06 04:44:43,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 226 transitions, 4412 flow [2025-02-06 04:44:43,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 226 transitions, 4120 flow, removed 5 selfloop flow, removed 9 redundant places. [2025-02-06 04:44:43,669 INFO L231 Difference]: Finished difference. Result has 208 places, 183 transitions, 3456 flow [2025-02-06 04:44:43,669 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} [2025-02-06 04:44:43,670 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 184 predicate places. [2025-02-06 04:44:43,670 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 3456 flow [2025-02-06 04:44:43,670 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) [2025-02-06 04:44:43,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:43,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:43,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:43,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-02-06 04:44:43,871 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:43,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 247012915, now seen corresponding path program 19 times [2025-02-06 04:44:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:43,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980819129] [2025-02-06 04:44:43,871 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:43,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:43,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:43,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:43,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:43,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:43,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980819129] [2025-02-06 04:44:43,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980819129] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:43,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398441448] [2025-02-06 04:44:43,943 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:43,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:43,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:43,946 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:43,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 04:44:43,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:43,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:43,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:43,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:43,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:43,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:44,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:44,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398441448] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:44,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:44,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:44,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058491567] [2025-02-06 04:44:44,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:44,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:44,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:44,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:44,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:44,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:44,204 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) [2025-02-06 04:44:44,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:44,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:44,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:44,569 INFO L124 PetriNetUnfolderBase]: 761/1568 cut-off events. [2025-02-06 04:44:44,570 INFO L125 PetriNetUnfolderBase]: For 19895/19895 co-relation queries the response was YES. [2025-02-06 04:44:44,574 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. [2025-02-06 04:44:44,577 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 128 selfloop transitions, 92 changer transitions 28/249 dead transitions. [2025-02-06 04:44:44,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 249 transitions, 4832 flow [2025-02-06 04:44:44,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 04:44:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 04:44:44,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 125 transitions. [2025-02-06 04:44:44,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2025-02-06 04:44:44,578 INFO L175 Difference]: Start difference. First operand has 208 places, 183 transitions, 3456 flow. Second operand 15 states and 125 transitions. [2025-02-06 04:44:44,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 249 transitions, 4832 flow [2025-02-06 04:44:44,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 249 transitions, 4586 flow, removed 11 selfloop flow, removed 14 redundant places. [2025-02-06 04:44:44,628 INFO L231 Difference]: Finished difference. Result has 207 places, 180 transitions, 3451 flow [2025-02-06 04:44:44,629 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} [2025-02-06 04:44:44,629 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 183 predicate places. [2025-02-06 04:44:44,629 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 180 transitions, 3451 flow [2025-02-06 04:44:44,629 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) [2025-02-06 04:44:44,629 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:44,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:44,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-06 04:44:44,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-02-06 04:44:44,830 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:44,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 306683221, now seen corresponding path program 20 times [2025-02-06 04:44:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:44,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129811291] [2025-02-06 04:44:44,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:44,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:44,836 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:44,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:44,838 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:44,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:44,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129811291] [2025-02-06 04:44:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129811291] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:44,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528014095] [2025-02-06 04:44:44,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:44,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:44,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:44,904 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:44,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-06 04:44:44,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:44,936 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:44,936 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:44,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:44,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:44,937 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:45,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:45,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528014095] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:45,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628713370] [2025-02-06 04:44:45,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:45,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:45,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:45,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:45,167 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:45,168 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) [2025-02-06 04:44:45,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:45,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:45,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:45,558 INFO L124 PetriNetUnfolderBase]: 709/1472 cut-off events. [2025-02-06 04:44:45,558 INFO L125 PetriNetUnfolderBase]: For 19063/19063 co-relation queries the response was YES. [2025-02-06 04:44:45,595 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. [2025-02-06 04:44:45,598 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 99 selfloop transitions, 59 changer transitions 67/226 dead transitions. [2025-02-06 04:44:45,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 226 transitions, 4311 flow [2025-02-06 04:44:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 04:44:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-02-06 04:44:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 124 transitions. [2025-02-06 04:44:45,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2025-02-06 04:44:45,599 INFO L175 Difference]: Start difference. First operand has 207 places, 180 transitions, 3451 flow. Second operand 16 states and 124 transitions. [2025-02-06 04:44:45,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 226 transitions, 4311 flow [2025-02-06 04:44:45,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 226 transitions, 4152 flow, removed 12 selfloop flow, removed 12 redundant places. [2025-02-06 04:44:45,644 INFO L231 Difference]: Finished difference. Result has 209 places, 142 transitions, 2614 flow [2025-02-06 04:44:45,644 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} [2025-02-06 04:44:45,644 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 185 predicate places. [2025-02-06 04:44:45,644 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 142 transitions, 2614 flow [2025-02-06 04:44:45,645 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) [2025-02-06 04:44:45,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:45,645 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:45,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-06 04:44:45,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-02-06 04:44:45,849 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:45,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:45,850 INFO L85 PathProgramCache]: Analyzing trace with hash 327409873, now seen corresponding path program 21 times [2025-02-06 04:44:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:45,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16005621] [2025-02-06 04:44:45,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:45,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:45,853 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:45,853 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:45,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:45,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16005621] [2025-02-06 04:44:45,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16005621] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:45,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643643176] [2025-02-06 04:44:45,921 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:45,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:45,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:45,922 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:45,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-06 04:44:45,950 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:45,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:45,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:45,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:45,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:45,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:46,041 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643643176] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:46,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893068041] [2025-02-06 04:44:46,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:46,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:46,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:46,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:46,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:46,175 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:46,175 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) [2025-02-06 04:44:46,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:46,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:46,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:46,480 INFO L124 PetriNetUnfolderBase]: 507/1091 cut-off events. [2025-02-06 04:44:46,480 INFO L125 PetriNetUnfolderBase]: For 14286/14286 co-relation queries the response was YES. [2025-02-06 04:44:46,483 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. [2025-02-06 04:44:46,486 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 92 selfloop transitions, 51 changer transitions 21/165 dead transitions. [2025-02-06 04:44:46,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 165 transitions, 3078 flow [2025-02-06 04:44:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:46,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 101 transitions. [2025-02-06 04:44:46,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3531468531468531 [2025-02-06 04:44:46,487 INFO L175 Difference]: Start difference. First operand has 209 places, 142 transitions, 2614 flow. Second operand 13 states and 101 transitions. [2025-02-06 04:44:46,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 165 transitions, 3078 flow [2025-02-06 04:44:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 165 transitions, 2699 flow, removed 34 selfloop flow, removed 26 redundant places. [2025-02-06 04:44:46,518 INFO L231 Difference]: Finished difference. Result has 185 places, 131 transitions, 2137 flow [2025-02-06 04:44:46,519 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} [2025-02-06 04:44:46,519 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 161 predicate places. [2025-02-06 04:44:46,519 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 131 transitions, 2137 flow [2025-02-06 04:44:46,519 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) [2025-02-06 04:44:46,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:46,519 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:46,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:46,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-02-06 04:44:46,720 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:46,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1013584379, now seen corresponding path program 22 times [2025-02-06 04:44:46,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:46,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669528318] [2025-02-06 04:44:46,721 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:46,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:46,723 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:46,724 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:46,724 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:46,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669528318] [2025-02-06 04:44:46,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669528318] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:46,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134192951] [2025-02-06 04:44:46,793 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 04:44:46,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:46,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:46,795 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:46,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-06 04:44:46,821 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:46,829 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:46,829 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 04:44:46,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:46,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:46,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:46,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:47,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134192951] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:47,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:47,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2025-02-06 04:44:47,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762645414] [2025-02-06 04:44:47,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:47,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 04:44:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:47,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 04:44:47,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2025-02-06 04:44:47,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:47,082 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) [2025-02-06 04:44:47,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:47,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:47,413 INFO L124 PetriNetUnfolderBase]: 470/999 cut-off events. [2025-02-06 04:44:47,413 INFO L125 PetriNetUnfolderBase]: For 11032/11032 co-relation queries the response was YES. [2025-02-06 04:44:47,415 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. [2025-02-06 04:44:47,417 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 64 selfloop transitions, 50 changer transitions 40/155 dead transitions. [2025-02-06 04:44:47,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 155 transitions, 2579 flow [2025-02-06 04:44:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:47,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 99 transitions. [2025-02-06 04:44:47,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2025-02-06 04:44:47,418 INFO L175 Difference]: Start difference. First operand has 185 places, 131 transitions, 2137 flow. Second operand 13 states and 99 transitions. [2025-02-06 04:44:47,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 155 transitions, 2579 flow [2025-02-06 04:44:47,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 155 transitions, 2399 flow, removed 10 selfloop flow, removed 14 redundant places. [2025-02-06 04:44:47,438 INFO L231 Difference]: Finished difference. Result has 176 places, 103 transitions, 1573 flow [2025-02-06 04:44:47,438 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} [2025-02-06 04:44:47,438 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 152 predicate places. [2025-02-06 04:44:47,439 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 103 transitions, 1573 flow [2025-02-06 04:44:47,439 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) [2025-02-06 04:44:47,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:47,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:47,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:47,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-02-06 04:44:47,640 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:47,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash -329372659, now seen corresponding path program 23 times [2025-02-06 04:44:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:47,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916638584] [2025-02-06 04:44:47,640 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:47,642 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:47,643 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:47,643 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:47,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:47,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:47,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:47,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916638584] [2025-02-06 04:44:47,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916638584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:47,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062207534] [2025-02-06 04:44:47,690 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 04:44:47,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:47,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:47,692 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:47,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-06 04:44:47,713 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:47,720 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:47,720 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:47,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:47,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 04:44:47,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:47,753 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 04:44:47,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062207534] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:44:47,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 04:44:47,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2025-02-06 04:44:47,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618906182] [2025-02-06 04:44:47,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:44:47,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 04:44:47,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:47,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 04:44:47,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-02-06 04:44:47,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:47,760 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) [2025-02-06 04:44:47,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:47,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:47,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:47,882 INFO L124 PetriNetUnfolderBase]: 411/883 cut-off events. [2025-02-06 04:44:47,882 INFO L125 PetriNetUnfolderBase]: For 8337/8337 co-relation queries the response was YES. [2025-02-06 04:44:47,884 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. [2025-02-06 04:44:47,886 INFO L140 encePairwiseOnDemand]: 14/22 looper letters, 53 selfloop transitions, 29 changer transitions 40/123 dead transitions. [2025-02-06 04:44:47,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 123 transitions, 2003 flow [2025-02-06 04:44:47,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 04:44:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 04:44:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 72 transitions. [2025-02-06 04:44:47,886 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-02-06 04:44:47,886 INFO L175 Difference]: Start difference. First operand has 176 places, 103 transitions, 1573 flow. Second operand 9 states and 72 transitions. [2025-02-06 04:44:47,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 123 transitions, 2003 flow [2025-02-06 04:44:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 123 transitions, 1739 flow, removed 8 selfloop flow, removed 29 redundant places. [2025-02-06 04:44:47,905 INFO L231 Difference]: Finished difference. Result has 143 places, 77 transitions, 1056 flow [2025-02-06 04:44:47,905 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} [2025-02-06 04:44:47,905 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 119 predicate places. [2025-02-06 04:44:47,905 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 77 transitions, 1056 flow [2025-02-06 04:44:47,905 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) [2025-02-06 04:44:47,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:47,905 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:47,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:48,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:48,106 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:48,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash 946345795, now seen corresponding path program 24 times [2025-02-06 04:44:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:48,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124105407] [2025-02-06 04:44:48,107 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:48,110 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:48,114 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:48,114 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:48,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124105407] [2025-02-06 04:44:48,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124105407] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804952726] [2025-02-06 04:44:48,207 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 04:44:48,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:48,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:48,210 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:48,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-06 04:44:48,234 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-02-06 04:44:48,241 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:48,241 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 04:44:48,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:48,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:48,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:48,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804952726] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:48,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163281213] [2025-02-06 04:44:48,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:48,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:48,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:48,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:48,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:48,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:48,436 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) [2025-02-06 04:44:48,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:48,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:48,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:48,659 INFO L124 PetriNetUnfolderBase]: 189/435 cut-off events. [2025-02-06 04:44:48,659 INFO L125 PetriNetUnfolderBase]: For 3703/3703 co-relation queries the response was YES. [2025-02-06 04:44:48,660 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. [2025-02-06 04:44:48,661 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 48 selfloop transitions, 31 changer transitions 19/99 dead transitions. [2025-02-06 04:44:48,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 99 transitions, 1336 flow [2025-02-06 04:44:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:44:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:44:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 87 transitions. [2025-02-06 04:44:48,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2025-02-06 04:44:48,663 INFO L175 Difference]: Start difference. First operand has 143 places, 77 transitions, 1056 flow. Second operand 12 states and 87 transitions. [2025-02-06 04:44:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 99 transitions, 1336 flow [2025-02-06 04:44:48,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 99 transitions, 1199 flow, removed 12 selfloop flow, removed 17 redundant places. [2025-02-06 04:44:48,669 INFO L231 Difference]: Finished difference. Result has 122 places, 65 transitions, 784 flow [2025-02-06 04:44:48,670 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} [2025-02-06 04:44:48,670 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2025-02-06 04:44:48,670 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 65 transitions, 784 flow [2025-02-06 04:44:48,670 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) [2025-02-06 04:44:48,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:48,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:48,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-06 04:44:48,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-02-06 04:44:48,875 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:48,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:48,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1106498671, now seen corresponding path program 25 times [2025-02-06 04:44:48,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933070896] [2025-02-06 04:44:48,876 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:48,878 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:48,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:48,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:48,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:48,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:48,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933070896] [2025-02-06 04:44:48,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933070896] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:48,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630287811] [2025-02-06 04:44:48,951 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 04:44:48,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:48,953 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:48,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-06 04:44:48,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:44:48,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:44:48,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:44:48,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:48,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 04:44:48,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:49,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:49,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630287811] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:49,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:49,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2025-02-06 04:44:49,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162462782] [2025-02-06 04:44:49,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:49,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 04:44:49,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:49,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 04:44:49,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2025-02-06 04:44:49,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:49,210 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) [2025-02-06 04:44:49,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:49,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:49,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:49,361 INFO L124 PetriNetUnfolderBase]: 125/289 cut-off events. [2025-02-06 04:44:49,361 INFO L125 PetriNetUnfolderBase]: For 2370/2370 co-relation queries the response was YES. [2025-02-06 04:44:49,362 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. [2025-02-06 04:44:49,363 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 28 selfloop transitions, 12 changer transitions 42/83 dead transitions. [2025-02-06 04:44:49,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 83 transitions, 1011 flow [2025-02-06 04:44:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 04:44:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-02-06 04:44:49,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 81 transitions. [2025-02-06 04:44:49,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2025-02-06 04:44:49,363 INFO L175 Difference]: Start difference. First operand has 122 places, 65 transitions, 784 flow. Second operand 12 states and 81 transitions. [2025-02-06 04:44:49,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 83 transitions, 1011 flow [2025-02-06 04:44:49,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 83 transitions, 854 flow, removed 9 selfloop flow, removed 20 redundant places. [2025-02-06 04:44:49,368 INFO L231 Difference]: Finished difference. Result has 111 places, 34 transitions, 330 flow [2025-02-06 04:44:49,368 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} [2025-02-06 04:44:49,368 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2025-02-06 04:44:49,369 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 34 transitions, 330 flow [2025-02-06 04:44:49,369 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) [2025-02-06 04:44:49,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:49,369 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:49,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-06 04:44:49,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:49,570 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:49,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1704229137, now seen corresponding path program 26 times [2025-02-06 04:44:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223084743] [2025-02-06 04:44:49,570 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:49,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 04:44:49,573 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:44:49,573 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:49,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223084743] [2025-02-06 04:44:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223084743] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579255191] [2025-02-06 04:44:49,604 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:44:49,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:49,606 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:49,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-06 04:44:49,627 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-02-06 04:44:49,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 04:44:49,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 04:44:49,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:49,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 04:44:49,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:49,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:49,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579255191] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:49,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:49,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-02-06 04:44:49,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552361770] [2025-02-06 04:44:49,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:49,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 04:44:49,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:49,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 04:44:49,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-06 04:44:49,689 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:49,693 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) [2025-02-06 04:44:49,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:49,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:49,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:49,758 INFO L124 PetriNetUnfolderBase]: 43/98 cut-off events. [2025-02-06 04:44:49,758 INFO L125 PetriNetUnfolderBase]: For 853/853 co-relation queries the response was YES. [2025-02-06 04:44:49,760 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. [2025-02-06 04:44:49,761 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 28 selfloop transitions, 5 changer transitions 8/42 dead transitions. [2025-02-06 04:44:49,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 42 transitions, 419 flow [2025-02-06 04:44:49,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 04:44:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 04:44:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 59 transitions. [2025-02-06 04:44:49,761 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2025-02-06 04:44:49,761 INFO L175 Difference]: Start difference. First operand has 111 places, 34 transitions, 330 flow. Second operand 8 states and 59 transitions. [2025-02-06 04:44:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 42 transitions, 419 flow [2025-02-06 04:44:49,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 42 transitions, 318 flow, removed 8 selfloop flow, removed 24 redundant places. [2025-02-06 04:44:49,763 INFO L231 Difference]: Finished difference. Result has 59 places, 27 transitions, 172 flow [2025-02-06 04:44:49,763 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} [2025-02-06 04:44:49,763 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2025-02-06 04:44:49,763 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 27 transitions, 172 flow [2025-02-06 04:44:49,764 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) [2025-02-06 04:44:49,764 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:44:49,764 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:44:49,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-06 04:44:49,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-02-06 04:44:49,964 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 04:44:49,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:44:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1363964874, now seen corresponding path program 27 times [2025-02-06 04:44:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:44:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246281625] [2025-02-06 04:44:49,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:49,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:44:49,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:44:49,970 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:44:49,970 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:49,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:50,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:50,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:44:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246281625] [2025-02-06 04:44:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246281625] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 04:44:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944876618] [2025-02-06 04:44:50,056 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:44:50,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:50,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:44:50,059 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 04:44:50,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-06 04:44:50,083 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-02-06 04:44:50,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 04:44:50,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 04:44:50,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:44:50,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 04:44:50,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 04:44:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:50,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 04:44:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:44:50,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944876618] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 04:44:50,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 04:44:50,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2025-02-06 04:44:50,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450878671] [2025-02-06 04:44:50,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 04:44:50,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 04:44:50,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:44:50,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 04:44:50,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-02-06 04:44:50,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2025-02-06 04:44:50,408 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) [2025-02-06 04:44:50,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:44:50,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2025-02-06 04:44:50,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:44:50,584 INFO L124 PetriNetUnfolderBase]: 36/83 cut-off events. [2025-02-06 04:44:50,584 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2025-02-06 04:44:50,584 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. [2025-02-06 04:44:50,584 INFO L140 encePairwiseOnDemand]: 12/22 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2025-02-06 04:44:50,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 42 transitions, 295 flow [2025-02-06 04:44:50,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 04:44:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-06 04:44:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 79 transitions. [2025-02-06 04:44:50,585 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2762237762237762 [2025-02-06 04:44:50,585 INFO L175 Difference]: Start difference. First operand has 59 places, 27 transitions, 172 flow. Second operand 13 states and 79 transitions. [2025-02-06 04:44:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 42 transitions, 295 flow [2025-02-06 04:44:50,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 276 flow, removed 3 selfloop flow, removed 5 redundant places. [2025-02-06 04:44:50,586 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2025-02-06 04:44:50,586 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} [2025-02-06 04:44:50,586 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 36 predicate places. [2025-02-06 04:44:50,586 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2025-02-06 04:44:50,586 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) [2025-02-06 04:44:50,589 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-02-06 04:44:50,589 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-02-06 04:44:50,589 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-02-06 04:44:50,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-06 04:44:50,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 04:44:50,790 INFO L422 BasicCegarLoop]: Path program histogram: [27, 16, 6, 6] [2025-02-06 04:44:50,793 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:44:50,793 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:44:50,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:44:50 BasicIcfg [2025-02-06 04:44:50,796 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:44:50,797 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:44:50,797 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:44:50,797 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:44:50,797 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:44:13" (3/4) ... [2025-02-06 04:44:50,799 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:44:50,800 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-02-06 04:44:50,800 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-02-06 04:44:50,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2025-02-06 04:44:50,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-02-06 04:44:50,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-02-06 04:44:50,803 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-06 04:44:50,858 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:44:50,858 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:44:50,858 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:44:50,859 INFO L158 Benchmark]: Toolchain (without parser) took 37814.75ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 132.3MB in the beginning and 202.2MB in the end (delta: -69.8MB). Peak memory consumption was 276.7MB. Max. memory is 16.1GB. [2025-02-06 04:44:50,859 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:44:50,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.87ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 121.2MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:44:50,860 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.38ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 119.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:44:50,860 INFO L158 Benchmark]: Boogie Preprocessor took 16.01ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 118.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:44:50,861 INFO L158 Benchmark]: IcfgBuilder took 341.59ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 99.5MB in the end (delta: 19.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 04:44:50,861 INFO L158 Benchmark]: TraceAbstraction took 37191.95ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 98.9MB in the beginning and 206.3MB in the end (delta: -107.4MB). Peak memory consumption was 243.2MB. Max. memory is 16.1GB. [2025-02-06 04:44:50,861 INFO L158 Benchmark]: Witness Printer took 61.42ms. Allocated memory is still 520.1MB. Free memory was 206.3MB in the beginning and 202.2MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:44:50,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 209.7MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.87ms. Allocated memory is still 167.8MB. Free memory was 132.3MB in the beginning and 121.2MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.38ms. Allocated memory is still 167.8MB. Free memory was 121.2MB in the beginning and 119.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.01ms. Allocated memory is still 167.8MB. Free memory was 119.9MB in the beginning and 118.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 341.59ms. Allocated memory is still 167.8MB. Free memory was 118.8MB in the beginning and 99.5MB in the end (delta: 19.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 37191.95ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 98.9MB in the beginning and 206.3MB in the end (delta: -107.4MB). Peak memory consumption was 243.2MB. Max. memory is 16.1GB. * Witness Printer took 61.42ms. Allocated memory is still 520.1MB. Free memory was 206.3MB in the beginning and 202.2MB in the end (delta: 4.1MB). 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, 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: 37.1s, OverallIterations: 55, TraceHistogramMax: 2, PathProgramHistogramMax: 27, EmptinessCheckTime: 0.0s, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2785 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2729 mSDsluCounter, 550 SdHoareTripleChecker+Invalid, 6.8s 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, 8.8s 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, 10.6s 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! [2025-02-06 04:44:50,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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