./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:59:33,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:59:33,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:59:33,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:59:33,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:59:34,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:59:34,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:59:34,013 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:59:34,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:59:34,014 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:59:34,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:59:34,014 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:59:34,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:59:34,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:59:34,015 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:59:34,016 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:59:34,016 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:59:34,017 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:59:34,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:59:34,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:59:34,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:59:34,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:59:34,018 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 1f93f8af6c620ba8dc44e82cf4c30bbca874545f3e3802e43ba4e1345a3afed4 [2025-02-06 12:59:34,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:59:34,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:59:34,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:59:34,348 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:59:34,349 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:59:34,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2025-02-06 12:59:35,786 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd93f060d/02124e89c4ff4d719cb60d0fb77d539a/FLAG4d3c3a79b [2025-02-06 12:59:36,069 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:59:36,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x6.wvr.c [2025-02-06 12:59:36,077 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd93f060d/02124e89c4ff4d719cb60d0fb77d539a/FLAG4d3c3a79b [2025-02-06 12:59:36,090 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/fd93f060d/02124e89c4ff4d719cb60d0fb77d539a [2025-02-06 12:59:36,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:59:36,094 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:59:36,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:59:36,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:59:36,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:59:36,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cad091b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36, skipping insertion in model container [2025-02-06 12:59:36,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:59:36,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:59:36,312 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:59:36,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:59:36,356 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:59:36,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36 WrapperNode [2025-02-06 12:59:36,357 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:59:36,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:59:36,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:59:36,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:59:36,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,372 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,392 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2025-02-06 12:59:36,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:59:36,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:59:36,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:59:36,395 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:59:36,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,423 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 12:59:36,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,430 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,435 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:59:36,443 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:59:36,444 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:59:36,444 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:59:36,445 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (1/1) ... [2025-02-06 12:59:36,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:59:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:36,481 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 12:59:36,488 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 12:59:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:59:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 12:59:36,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 12:59:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 12:59:36,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 12:59:36,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 12:59:36,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 12:59:36,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 12:59:36,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 12:59:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:59:36,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:59:36,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:59:36,512 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 12:59:36,604 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:59:36,606 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:59:36,876 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:59:36,877 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:59:37,055 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:59:37,055 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:59:37,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:59:37 BoogieIcfgContainer [2025-02-06 12:59:37,056 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:59:37,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:59:37,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:59:37,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:59:37,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:59:36" (1/3) ... [2025-02-06 12:59:37,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2881c41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:59:37, skipping insertion in model container [2025-02-06 12:59:37,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:59:36" (2/3) ... [2025-02-06 12:59:37,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2881c41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:59:37, skipping insertion in model container [2025-02-06 12:59:37,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:59:37" (3/3) ... [2025-02-06 12:59:37,067 INFO L128 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2025-02-06 12:59:37,084 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:59:37,087 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bench-exp2x6.wvr.c that has 5 procedures, 31 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2025-02-06 12:59:37,088 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:59:37,148 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 12:59:37,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2025-02-06 12:59:37,213 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2025-02-06 12:59:37,219 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 12:59:37,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2025-02-06 12:59:37,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2025-02-06 12:59:37,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 29 transitions, 82 flow [2025-02-06 12:59:37,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:59:37,252 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=None, 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;@184e4936, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:59:37,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-06 12:59:37,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:59:37,272 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2025-02-06 12:59:37,273 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 12:59:37,273 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:37,273 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:37,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:37,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash 668827, now seen corresponding path program 1 times [2025-02-06 12:59:37,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:37,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073049246] [2025-02-06 12:59:37,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:37,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 12:59:37,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 12:59:37,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:37,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:37,799 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 12:59:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073049246] [2025-02-06 12:59:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073049246] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 12:59:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496292617] [2025-02-06 12:59:37,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:59:37,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:37,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:59:37,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:59:37,857 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:37,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 12:59:37,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:37,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:37,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:38,232 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2025-02-06 12:59:38,233 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2025-02-06 12:59:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5590 event pairs, 123 based on Foata normal form. 2/994 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2025-02-06 12:59:38,257 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2025-02-06 12:59:38,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2025-02-06 12:59:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:59:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:59:38,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2025-02-06 12:59:38,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2025-02-06 12:59:38,275 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 73 transitions. [2025-02-06 12:59:38,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2025-02-06 12:59:38,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 12:59:38,289 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2025-02-06 12:59:38,291 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2025-02-06 12:59:38,295 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2025-02-06 12:59:38,297 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2025-02-06 12:59:38,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 12:59:38,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:38,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:38,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:59:38,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:38,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:38,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1167515123, now seen corresponding path program 1 times [2025-02-06 12:59:38,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:38,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774734644] [2025-02-06 12:59:38,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:38,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:38,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:59:38,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:38,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:38,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:38,492 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 12:59:38,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:38,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774734644] [2025-02-06 12:59:38,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774734644] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:38,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:38,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:59:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281544581] [2025-02-06 12:59:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:38,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:59:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:38,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:59:38,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:59:38,495 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:38,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:38,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:38,846 INFO L124 PetriNetUnfolderBase]: 1562/2019 cut-off events. [2025-02-06 12:59:38,847 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2025-02-06 12:59:38,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5004 conditions, 2019 events. 1562/2019 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6974 event pairs, 89 based on Foata normal form. 31/2022 useless extension candidates. Maximal degree in co-relation 1791. Up to 828 conditions per place. [2025-02-06 12:59:38,867 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 58 selfloop transitions, 10 changer transitions 0/73 dead transitions. [2025-02-06 12:59:38,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 73 transitions, 357 flow [2025-02-06 12:59:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2025-02-06 12:59:38,871 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2025-02-06 12:59:38,872 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 112 transitions. [2025-02-06 12:59:38,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 73 transitions, 357 flow [2025-02-06 12:59:38,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 73 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:38,874 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2025-02-06 12:59:38,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2025-02-06 12:59:38,876 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2025-02-06 12:59:38,877 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2025-02-06 12:59:38,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:38,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:38,877 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:38,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:59:38,878 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:38,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash -326057384, now seen corresponding path program 1 times [2025-02-06 12:59:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:38,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290178047] [2025-02-06 12:59:38,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:38,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:59:38,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:38,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:38,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:39,029 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 12:59:39,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290178047] [2025-02-06 12:59:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290178047] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:59:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162741179] [2025-02-06 12:59:39,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:39,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:39,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:39,035 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 12:59:39,037 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 12:59:39,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:59:39,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:39,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:39,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:39,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:59:39,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:59:39,282 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 12:59:39,282 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:59:39,366 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 12:59:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162741179] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:59:39,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:59:39,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 12:59:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826662580] [2025-02-06 12:59:39,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:59:39,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:59:39,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:39,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:59:39,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:59:39,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:39,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 12:59:39,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:39,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:39,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:39,750 INFO L124 PetriNetUnfolderBase]: 1958/2597 cut-off events. [2025-02-06 12:59:39,751 INFO L125 PetriNetUnfolderBase]: For 2751/2751 co-relation queries the response was YES. [2025-02-06 12:59:39,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8095 conditions, 2597 events. 1958/2597 cut-off events. For 2751/2751 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10560 event pairs, 312 based on Foata normal form. 80/2643 useless extension candidates. Maximal degree in co-relation 3569. Up to 1295 conditions per place. [2025-02-06 12:59:39,773 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 89 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2025-02-06 12:59:39,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 102 transitions, 615 flow [2025-02-06 12:59:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:39,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2025-02-06 12:59:39,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2025-02-06 12:59:39,776 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 123 transitions. [2025-02-06 12:59:39,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 102 transitions, 615 flow [2025-02-06 12:59:39,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 102 transitions, 615 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:59:39,782 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 210 flow [2025-02-06 12:59:39,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2025-02-06 12:59:39,783 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2025-02-06 12:59:39,783 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 210 flow [2025-02-06 12:59:39,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 12:59:39,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:39,784 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:39,794 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 12:59:39,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:39,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:39,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:39,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1207442281, now seen corresponding path program 2 times [2025-02-06 12:59:39,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519433334] [2025-02-06 12:59:39,989 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:40,003 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:40,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:40,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:40,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:40,117 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 12:59:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519433334] [2025-02-06 12:59:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519433334] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:59:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997895468] [2025-02-06 12:59:40,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:40,121 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 12:59:40,123 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 12:59:40,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:40,191 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:40,192 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:40,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:40,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:59:40,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:59:40,348 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 12:59:40,349 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:59:40,418 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 12:59:40,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997895468] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:59:40,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:59:40,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 12:59:40,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419904513] [2025-02-06 12:59:40,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:59:40,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:59:40,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:40,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:59:40,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:59:40,420 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:40,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 12:59:40,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:40,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:40,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:40,766 INFO L124 PetriNetUnfolderBase]: 1905/2575 cut-off events. [2025-02-06 12:59:40,767 INFO L125 PetriNetUnfolderBase]: For 4028/4028 co-relation queries the response was YES. [2025-02-06 12:59:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9502 conditions, 2575 events. 1905/2575 cut-off events. For 4028/4028 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10797 event pairs, 329 based on Foata normal form. 77/2594 useless extension candidates. Maximal degree in co-relation 3967. Up to 1195 conditions per place. [2025-02-06 12:59:40,790 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 75 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2025-02-06 12:59:40,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 90 transitions, 615 flow [2025-02-06 12:59:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:40,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-02-06 12:59:40,792 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2025-02-06 12:59:40,792 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 210 flow. Second operand 5 states and 111 transitions. [2025-02-06 12:59:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 90 transitions, 615 flow [2025-02-06 12:59:40,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 90 transitions, 615 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 12:59:40,798 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 264 flow [2025-02-06 12:59:40,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2025-02-06 12:59:40,799 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2025-02-06 12:59:40,799 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 264 flow [2025-02-06 12:59:40,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 12:59:40,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:40,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:40,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:59:41,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:41,005 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:41,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1618647633, now seen corresponding path program 1 times [2025-02-06 12:59:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:41,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793261296] [2025-02-06 12:59:41,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:41,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:41,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:59:41,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:41,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:41,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:41,111 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 12:59:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:41,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793261296] [2025-02-06 12:59:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793261296] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:59:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613200679] [2025-02-06 12:59:41,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:41,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:59:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:41,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:59:41,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:59:41,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:41,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:41,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:41,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:41,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:41,474 INFO L124 PetriNetUnfolderBase]: 1859/2489 cut-off events. [2025-02-06 12:59:41,474 INFO L125 PetriNetUnfolderBase]: For 6539/6545 co-relation queries the response was YES. [2025-02-06 12:59:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10232 conditions, 2489 events. 1859/2489 cut-off events. For 6539/6545 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10272 event pairs, 143 based on Foata normal form. 47/2529 useless extension candidates. Maximal degree in co-relation 6459. Up to 1056 conditions per place. [2025-02-06 12:59:41,499 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 101 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2025-02-06 12:59:41,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 116 transitions, 893 flow [2025-02-06 12:59:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-06 12:59:41,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-02-06 12:59:41,502 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 264 flow. Second operand 5 states and 119 transitions. [2025-02-06 12:59:41,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 116 transitions, 893 flow [2025-02-06 12:59:41,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 116 transitions, 864 flow, removed 8 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:41,522 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 316 flow [2025-02-06 12:59:41,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=316, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2025-02-06 12:59:41,525 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2025-02-06 12:59:41,525 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 316 flow [2025-02-06 12:59:41,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:41,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:41,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:41,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:59:41,526 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:41,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1468669116, now seen corresponding path program 1 times [2025-02-06 12:59:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:41,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500377682] [2025-02-06 12:59:41,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:41,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 12:59:41,540 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:41,541 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:41,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:41,622 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 12:59:41,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:41,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500377682] [2025-02-06 12:59:41,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500377682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:41,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:41,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:59:41,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068535789] [2025-02-06 12:59:41,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:41,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:59:41,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:41,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:59:41,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:59:41,623 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:41,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 316 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:41,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:41,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:41,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:41,920 INFO L124 PetriNetUnfolderBase]: 1819/2469 cut-off events. [2025-02-06 12:59:41,920 INFO L125 PetriNetUnfolderBase]: For 5980/5980 co-relation queries the response was YES. [2025-02-06 12:59:41,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10578 conditions, 2469 events. 1819/2469 cut-off events. For 5980/5980 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10018 event pairs, 82 based on Foata normal form. 40/2475 useless extension candidates. Maximal degree in co-relation 6657. Up to 1147 conditions per place. [2025-02-06 12:59:41,941 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 90 selfloop transitions, 8 changer transitions 2/105 dead transitions. [2025-02-06 12:59:41,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 105 transitions, 841 flow [2025-02-06 12:59:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2025-02-06 12:59:41,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2025-02-06 12:59:41,943 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 316 flow. Second operand 5 states and 110 transitions. [2025-02-06 12:59:41,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 105 transitions, 841 flow [2025-02-06 12:59:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 796 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:41,954 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 317 flow [2025-02-06 12:59:41,955 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2025-02-06 12:59:41,956 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2025-02-06 12:59:41,957 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 317 flow [2025-02-06 12:59:41,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:41,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:41,958 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:41,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 12:59:41,958 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:41,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash 87085574, now seen corresponding path program 2 times [2025-02-06 12:59:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474676788] [2025-02-06 12:59:41,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:41,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:41,974 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:41,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:41,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:42,042 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 12:59:42,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:42,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474676788] [2025-02-06 12:59:42,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474676788] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:59:42,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984811860] [2025-02-06 12:59:42,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:42,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:42,045 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 12:59:42,048 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 12:59:42,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:42,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:42,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:42,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:42,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:59:42,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:59:42,270 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 12:59:42,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:59:42,343 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 12:59:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984811860] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:59:42,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:59:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 12:59:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733652041] [2025-02-06 12:59:42,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:59:42,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:59:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:42,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:59:42,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:59:42,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:42,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 317 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 12:59:42,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:42,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:42,671 INFO L124 PetriNetUnfolderBase]: 1745/2409 cut-off events. [2025-02-06 12:59:42,671 INFO L125 PetriNetUnfolderBase]: For 6151/6151 co-relation queries the response was YES. [2025-02-06 12:59:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10620 conditions, 2409 events. 1745/2409 cut-off events. For 6151/6151 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 10225 event pairs, 303 based on Foata normal form. 74/2435 useless extension candidates. Maximal degree in co-relation 6457. Up to 1314 conditions per place. [2025-02-06 12:59:42,690 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2025-02-06 12:59:42,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 104 transitions, 833 flow [2025-02-06 12:59:42,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-02-06 12:59:42,692 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2025-02-06 12:59:42,692 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 317 flow. Second operand 5 states and 108 transitions. [2025-02-06 12:59:42,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 104 transitions, 833 flow [2025-02-06 12:59:42,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 824 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:42,702 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 365 flow [2025-02-06 12:59:42,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=365, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2025-02-06 12:59:42,703 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2025-02-06 12:59:42,704 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 365 flow [2025-02-06 12:59:42,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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 12:59:42,704 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:42,704 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:42,713 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 12:59:42,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:42,905 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:42,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash 541806612, now seen corresponding path program 2 times [2025-02-06 12:59:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:42,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996499646] [2025-02-06 12:59:42,906 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:42,912 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:42,919 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:42,919 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:42,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:43,003 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 12:59:43,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:43,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996499646] [2025-02-06 12:59:43,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996499646] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:59:43,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:59:43,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:59:43,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44322039] [2025-02-06 12:59:43,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:59:43,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 12:59:43,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:43,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 12:59:43,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 12:59:43,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:43,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:43,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:43,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:43,269 INFO L124 PetriNetUnfolderBase]: 1515/2042 cut-off events. [2025-02-06 12:59:43,269 INFO L125 PetriNetUnfolderBase]: For 7760/7766 co-relation queries the response was YES. [2025-02-06 12:59:43,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9645 conditions, 2042 events. 1515/2042 cut-off events. For 7760/7766 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8074 event pairs, 89 based on Foata normal form. 35/2071 useless extension candidates. Maximal degree in co-relation 8488. Up to 864 conditions per place. [2025-02-06 12:59:43,285 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 108 selfloop transitions, 9 changer transitions 4/126 dead transitions. [2025-02-06 12:59:43,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 126 transitions, 1124 flow [2025-02-06 12:59:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2025-02-06 12:59:43,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7 [2025-02-06 12:59:43,287 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 365 flow. Second operand 5 states and 119 transitions. [2025-02-06 12:59:43,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 126 transitions, 1124 flow [2025-02-06 12:59:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 126 transitions, 1083 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:43,296 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 367 flow [2025-02-06 12:59:43,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2025-02-06 12:59:43,297 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2025-02-06 12:59:43,297 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 367 flow [2025-02-06 12:59:43,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:59:43,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:43,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:43,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 12:59:43,298 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:43,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1314894271, now seen corresponding path program 2 times [2025-02-06 12:59:43,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:43,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114884805] [2025-02-06 12:59:43,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:43,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:43,312 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:43,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:43,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:43,384 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 12:59:43,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114884805] [2025-02-06 12:59:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114884805] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:59:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452219984] [2025-02-06 12:59:43,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:59:43,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:43,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:43,388 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 12:59:43,391 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 12:59:43,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-06 12:59:43,454 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 12:59:43,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:59:43,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:43,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 12:59:43,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:59:43,605 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 12:59:43,606 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:59:43,671 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 12:59:43,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452219984] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:59:43,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:59:43,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-06 12:59:43,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741497086] [2025-02-06 12:59:43,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:59:43,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:59:43,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:59:43,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:59:43,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:59:43,674 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2025-02-06 12:59:43,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 12:59:43,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:59:43,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2025-02-06 12:59:43,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:59:43,974 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2025-02-06 12:59:43,975 INFO L125 PetriNetUnfolderBase]: For 6941/6965 co-relation queries the response was YES. [2025-02-06 12:59:43,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9646 conditions, 1987 events. 1447/1987 cut-off events. For 6941/6965 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8213 event pairs, 375 based on Foata normal form. 72/2041 useless extension candidates. Maximal degree in co-relation 8606. Up to 1150 conditions per place. [2025-02-06 12:59:43,988 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2025-02-06 12:59:43,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 1108 flow [2025-02-06 12:59:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 12:59:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 12:59:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2025-02-06 12:59:43,990 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2025-02-06 12:59:43,990 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 367 flow. Second operand 5 states and 116 transitions. [2025-02-06 12:59:43,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 1108 flow [2025-02-06 12:59:43,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 124 transitions, 1099 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-02-06 12:59:43,999 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 408 flow [2025-02-06 12:59:43,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2025-02-06 12:59:44,000 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2025-02-06 12:59:44,000 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 408 flow [2025-02-06 12:59:44,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 12:59:44,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:59:44,001 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:59:44,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 12:59:44,201 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,SelfDestructingSolverStorable8 [2025-02-06 12:59:44,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-06 12:59:44,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:59:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 372853184, now seen corresponding path program 1 times [2025-02-06 12:59:44,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:59:44,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197704389] [2025-02-06 12:59:44,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:44,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:59:44,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 12:59:44,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 12:59:44,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:44,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:44,747 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 12:59:44,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:59:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197704389] [2025-02-06 12:59:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197704389] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:59:44,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562914776] [2025-02-06 12:59:44,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:59:44,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:59:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:59:44,750 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 12:59:44,752 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 12:59:44,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 12:59:44,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 12:59:44,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:59:44,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:59:44,860 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 12:59:44,861 INFO L279 TraceCheckSpWp]: Computing forward predicates...