./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1-alt.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/popl20-figure1-alt.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 e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:06:48,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:06:48,153 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:06:48,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:06:48,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:06:48,174 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:06:48,174 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:06:48,175 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:06:48,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:06:48,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:06:48,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:06:48,175 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:06:48,176 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:06:48,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:06:48,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:06:48,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:06:48,177 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 -> e66d74cf738883d82d8ab680e594f84e8947532df35a185c16ed9746f38b197c [2025-02-06 13:06:48,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:06:48,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:06:48,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:06:48,427 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:06:48,428 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:06:48,428 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-02-06 13:06:49,594 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24c7172e9/25e75505a1d04d9d9ad94ac2de07adbd/FLAG4cbffb237 [2025-02-06 13:06:49,811 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:06:49,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2025-02-06 13:06:49,819 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24c7172e9/25e75505a1d04d9d9ad94ac2de07adbd/FLAG4cbffb237 [2025-02-06 13:06:49,864 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24c7172e9/25e75505a1d04d9d9ad94ac2de07adbd [2025-02-06 13:06:49,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:06:49,867 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:06:49,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:06:49,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:06:49,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:06:49,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:06:49" (1/1) ... [2025-02-06 13:06:49,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411c7917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:49, skipping insertion in model container [2025-02-06 13:06:49,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:06:49" (1/1) ... [2025-02-06 13:06:49,888 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:06:50,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:06:50,013 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:06:50,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:06:50,034 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:06:50,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50 WrapperNode [2025-02-06 13:06:50,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:06:50,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:06:50,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:06:50,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:06:50,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,046 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,056 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 65 [2025-02-06 13:06:50,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:06:50,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:06:50,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:06:50,056 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:06:50,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,080 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 13:06:50,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,086 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,092 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:06:50,092 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:06:50,093 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:06:50,093 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:06:50,093 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (1/1) ... [2025-02-06 13:06:50,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:06:50,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:50,132 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 13:06:50,138 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 13:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 13:06:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 13:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 13:06:50,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 13:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:06:50,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:06:50,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:06:50,157 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 13:06:50,220 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:06:50,222 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:06:50,322 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:06:50,322 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:06:50,407 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:06:50,409 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:06:50,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:06:50 BoogieIcfgContainer [2025-02-06 13:06:50,409 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:06:50,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:06:50,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:06:50,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:06:50,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:06:49" (1/3) ... [2025-02-06 13:06:50,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d58cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:06:50, skipping insertion in model container [2025-02-06 13:06:50,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:06:50" (2/3) ... [2025-02-06 13:06:50,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d58cd19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:06:50, skipping insertion in model container [2025-02-06 13:06:50,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:06:50" (3/3) ... [2025-02-06 13:06:50,418 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2025-02-06 13:06:50,428 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:06:50,429 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-figure1-alt.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 13:06:50,429 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:06:50,463 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-06 13:06:50,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2025-02-06 13:06:50,507 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2025-02-06 13:06:50,509 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:06:50,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2025-02-06 13:06:50,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2025-02-06 13:06:50,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2025-02-06 13:06:50,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:06:50,528 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;@7d611dd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:06:50,529 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 13:06:50,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:06:50,535 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2025-02-06 13:06:50,535 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:06:50,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:50,536 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:50,537 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:50,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1096739583, now seen corresponding path program 1 times [2025-02-06 13:06:50,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:50,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046169698] [2025-02-06 13:06:50,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:50,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:06:50,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:50,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:50,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:51,096 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 13:06:51,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:51,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046169698] [2025-02-06 13:06:51,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046169698] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:51,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:51,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328192975] [2025-02-06 13:06:51,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:51,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:51,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:51,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:51,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:51,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:51,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:51,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:51,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:51,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:51,288 INFO L124 PetriNetUnfolderBase]: 88/176 cut-off events. [2025-02-06 13:06:51,288 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-02-06 13:06:51,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 176 events. 88/176 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 554 event pairs, 26 based on Foata normal form. 3/171 useless extension candidates. Maximal degree in co-relation 307. Up to 110 conditions per place. [2025-02-06 13:06:51,291 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 31 selfloop transitions, 8 changer transitions 4/45 dead transitions. [2025-02-06 13:06:51,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 45 transitions, 209 flow [2025-02-06 13:06:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-02-06 13:06:51,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2025-02-06 13:06:51,301 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 7 states and 82 transitions. [2025-02-06 13:06:51,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 45 transitions, 209 flow [2025-02-06 13:06:51,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 45 transitions, 187 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 13:06:51,306 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 97 flow [2025-02-06 13:06:51,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2025-02-06 13:06:51,309 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2025-02-06 13:06:51,309 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 97 flow [2025-02-06 13:06:51,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:51,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:51,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:06:51,310 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:51,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 442307849, now seen corresponding path program 2 times [2025-02-06 13:06:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801502106] [2025-02-06 13:06:51,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:51,319 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:06:51,327 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:51,330 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:51,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:51,550 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 13:06:51,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801502106] [2025-02-06 13:06:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801502106] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716191196] [2025-02-06 13:06:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:51,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:51,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:51,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:51,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:51,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:51,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:51,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:51,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:51,747 INFO L124 PetriNetUnfolderBase]: 88/184 cut-off events. [2025-02-06 13:06:51,747 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-02-06 13:06:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 184 events. 88/184 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 641 event pairs, 22 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 473. Up to 110 conditions per place. [2025-02-06 13:06:51,749 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 30 selfloop transitions, 8 changer transitions 9/49 dead transitions. [2025-02-06 13:06:51,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 269 flow [2025-02-06 13:06:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:51,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2025-02-06 13:06:51,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2025-02-06 13:06:51,753 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 97 flow. Second operand 7 states and 79 transitions. [2025-02-06 13:06:51,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 269 flow [2025-02-06 13:06:51,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 265 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-02-06 13:06:51,754 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 131 flow [2025-02-06 13:06:51,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2025-02-06 13:06:51,755 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2025-02-06 13:06:51,755 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 131 flow [2025-02-06 13:06:51,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:51,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:51,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:51,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:06:51,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:51,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash -986836711, now seen corresponding path program 3 times [2025-02-06 13:06:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280357612] [2025-02-06 13:06:51,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:51,765 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:06:51,769 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:51,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 13:06:51,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:52,001 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 13:06:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280357612] [2025-02-06 13:06:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280357612] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000895083] [2025-02-06 13:06:52,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:52,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:52,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:52,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:52,014 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:52,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:52,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:52,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:52,131 INFO L124 PetriNetUnfolderBase]: 91/185 cut-off events. [2025-02-06 13:06:52,131 INFO L125 PetriNetUnfolderBase]: For 222/222 co-relation queries the response was YES. [2025-02-06 13:06:52,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 588 conditions, 185 events. 91/185 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 607 event pairs, 30 based on Foata normal form. 1/178 useless extension candidates. Maximal degree in co-relation 568. Up to 114 conditions per place. [2025-02-06 13:06:52,135 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 29 selfloop transitions, 12 changer transitions 4/47 dead transitions. [2025-02-06 13:06:52,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 310 flow [2025-02-06 13:06:52,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:52,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-02-06 13:06:52,138 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-02-06 13:06:52,138 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 131 flow. Second operand 7 states and 78 transitions. [2025-02-06 13:06:52,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 310 flow [2025-02-06 13:06:52,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 289 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-02-06 13:06:52,140 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 194 flow [2025-02-06 13:06:52,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2025-02-06 13:06:52,141 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2025-02-06 13:06:52,141 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 194 flow [2025-02-06 13:06:52,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:52,141 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:52,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:06:52,141 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:52,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:52,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1628008373, now seen corresponding path program 4 times [2025-02-06 13:06:52,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:52,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712758477] [2025-02-06 13:06:52,144 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:52,151 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 13 statements into 2 equivalence classes. [2025-02-06 13:06:52,161 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:52,161 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:06:52,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:52,316 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 13:06:52,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:52,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712758477] [2025-02-06 13:06:52,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712758477] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:52,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:52,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:52,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114070892] [2025-02-06 13:06:52,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:52,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:52,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:52,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:52,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:52,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:52,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:52,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:52,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:52,450 INFO L124 PetriNetUnfolderBase]: 90/196 cut-off events. [2025-02-06 13:06:52,450 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2025-02-06 13:06:52,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 196 events. 90/196 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 712 event pairs, 23 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 624. Up to 114 conditions per place. [2025-02-06 13:06:52,452 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 36 selfloop transitions, 12 changer transitions 5/55 dead transitions. [2025-02-06 13:06:52,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 402 flow [2025-02-06 13:06:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:52,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2025-02-06 13:06:52,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2025-02-06 13:06:52,453 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 194 flow. Second operand 7 states and 82 transitions. [2025-02-06 13:06:52,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 402 flow [2025-02-06 13:06:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 377 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-02-06 13:06:52,456 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 239 flow [2025-02-06 13:06:52,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2025-02-06 13:06:52,457 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2025-02-06 13:06:52,457 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 239 flow [2025-02-06 13:06:52,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:52,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:52,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:06:52,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:52,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1071181635, now seen corresponding path program 5 times [2025-02-06 13:06:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817861721] [2025-02-06 13:06:52,458 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:06:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:52,464 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:06:52,471 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:52,472 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:52,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:52,639 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 13:06:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:52,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817861721] [2025-02-06 13:06:52,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817861721] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:52,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643657117] [2025-02-06 13:06:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:52,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:52,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:52,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:52,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:52,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:52,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:52,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:52,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:52,757 INFO L124 PetriNetUnfolderBase]: 89/189 cut-off events. [2025-02-06 13:06:52,757 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2025-02-06 13:06:52,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 189 events. 89/189 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 664 event pairs, 28 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 646. Up to 114 conditions per place. [2025-02-06 13:06:52,760 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 28 selfloop transitions, 13 changer transitions 8/51 dead transitions. [2025-02-06 13:06:52,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 402 flow [2025-02-06 13:06:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2025-02-06 13:06:52,762 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-02-06 13:06:52,762 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 239 flow. Second operand 7 states and 78 transitions. [2025-02-06 13:06:52,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 402 flow [2025-02-06 13:06:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 378 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-02-06 13:06:52,767 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 232 flow [2025-02-06 13:06:52,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2025-02-06 13:06:52,767 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 25 predicate places. [2025-02-06 13:06:52,769 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 232 flow [2025-02-06 13:06:52,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:52,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:52,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 13:06:52,772 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:52,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1097659231, now seen corresponding path program 6 times [2025-02-06 13:06:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452597129] [2025-02-06 13:06:52,773 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:06:52,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:52,778 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:06:52,783 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:06:52,783 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 13:06:52,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:52,939 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 13:06:52,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:52,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452597129] [2025-02-06 13:06:52,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452597129] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:52,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:52,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 13:06:52,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382387032] [2025-02-06 13:06:52,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:52,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 13:06:52,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:52,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 13:06:52,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 13:06:52,946 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2025-02-06 13:06:52,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:52,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:52,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2025-02-06 13:06:52,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:53,024 INFO L124 PetriNetUnfolderBase]: 83/166 cut-off events. [2025-02-06 13:06:53,024 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2025-02-06 13:06:53,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 166 events. 83/166 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 513 event pairs, 27 based on Foata normal form. 1/159 useless extension candidates. Maximal degree in co-relation 558. Up to 114 conditions per place. [2025-02-06 13:06:53,025 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 22 selfloop transitions, 13 changer transitions 7/44 dead transitions. [2025-02-06 13:06:53,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 349 flow [2025-02-06 13:06:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 13:06:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 13:06:53,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2025-02-06 13:06:53,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2025-02-06 13:06:53,026 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 232 flow. Second operand 7 states and 72 transitions. [2025-02-06 13:06:53,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 349 flow [2025-02-06 13:06:53,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 307 flow, removed 3 selfloop flow, removed 10 redundant places. [2025-02-06 13:06:53,028 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 210 flow [2025-02-06 13:06:53,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2025-02-06 13:06:53,029 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2025-02-06 13:06:53,029 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 210 flow [2025-02-06 13:06:53,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 13:06:53,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:53,029 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:53,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 13:06:53,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:53,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1178779024, now seen corresponding path program 1 times [2025-02-06 13:06:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342763760] [2025-02-06 13:06:53,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:06:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:53,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:53,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:53,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:53,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:53,205 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 13:06:53,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342763760] [2025-02-06 13:06:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342763760] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:53,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:53,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967330403] [2025-02-06 13:06:53,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:53,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:53,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:53,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:53,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:53,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:53,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 210 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:53,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:53,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:53,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:53,366 INFO L124 PetriNetUnfolderBase]: 177/327 cut-off events. [2025-02-06 13:06:53,367 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2025-02-06 13:06:53,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 327 events. 177/327 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1195 event pairs, 2 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 948. Up to 151 conditions per place. [2025-02-06 13:06:53,369 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 57 selfloop transitions, 19 changer transitions 4/81 dead transitions. [2025-02-06 13:06:53,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 537 flow [2025-02-06 13:06:53,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:06:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:06:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2025-02-06 13:06:53,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2025-02-06 13:06:53,371 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 210 flow. Second operand 10 states and 112 transitions. [2025-02-06 13:06:53,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 537 flow [2025-02-06 13:06:53,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 81 transitions, 489 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-02-06 13:06:53,374 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 271 flow [2025-02-06 13:06:53,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=271, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2025-02-06 13:06:53,376 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2025-02-06 13:06:53,377 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 271 flow [2025-02-06 13:06:53,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:53,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:53,377 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:53,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 13:06:53,377 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:53,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1507177970, now seen corresponding path program 2 times [2025-02-06 13:06:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13377719] [2025-02-06 13:06:53,378 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:53,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:53,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:53,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:53,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:53,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:53,559 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 13:06:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13377719] [2025-02-06 13:06:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13377719] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:53,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501657591] [2025-02-06 13:06:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:53,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:53,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:53,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:53,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:53,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 271 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:53,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:53,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:53,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:53,709 INFO L124 PetriNetUnfolderBase]: 187/347 cut-off events. [2025-02-06 13:06:53,709 INFO L125 PetriNetUnfolderBase]: For 491/491 co-relation queries the response was YES. [2025-02-06 13:06:53,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 347 events. 187/347 cut-off events. For 491/491 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1265 event pairs, 40 based on Foata normal form. 1/348 useless extension candidates. Maximal degree in co-relation 1217. Up to 241 conditions per place. [2025-02-06 13:06:53,712 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 49 selfloop transitions, 19 changer transitions 4/73 dead transitions. [2025-02-06 13:06:53,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 547 flow [2025-02-06 13:06:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:06:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:06:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2025-02-06 13:06:53,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2025-02-06 13:06:53,713 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 271 flow. Second operand 10 states and 98 transitions. [2025-02-06 13:06:53,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 547 flow [2025-02-06 13:06:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 531 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-02-06 13:06:53,716 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 356 flow [2025-02-06 13:06:53,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2025-02-06 13:06:53,717 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2025-02-06 13:06:53,717 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 356 flow [2025-02-06 13:06:53,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:53,718 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:53,718 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:53,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 13:06:53,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:53,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 103911092, now seen corresponding path program 3 times [2025-02-06 13:06:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97105786] [2025-02-06 13:06:53,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:53,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:53,728 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:53,728 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:06:53,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:53,932 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 13:06:53,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97105786] [2025-02-06 13:06:53,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97105786] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:53,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253146341] [2025-02-06 13:06:53,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:53,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:53,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:53,938 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 13:06:53,940 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 13:06:53,968 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:53,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:53,978 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:06:53,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:53,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:06:53,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:54,196 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 13:06:54,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:06:54,375 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 13:06:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253146341] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:06:54,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:06:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-02-06 13:06:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700340966] [2025-02-06 13:06:54,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:06:54,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 13:06:54,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:54,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 13:06:54,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2025-02-06 13:06:54,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:54,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 356 flow. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 13:06:54,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:54,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:54,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:56,150 INFO L124 PetriNetUnfolderBase]: 518/974 cut-off events. [2025-02-06 13:06:56,150 INFO L125 PetriNetUnfolderBase]: For 1360/1360 co-relation queries the response was YES. [2025-02-06 13:06:56,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 974 events. 518/974 cut-off events. For 1360/1360 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4775 event pairs, 14 based on Foata normal form. 24/998 useless extension candidates. Maximal degree in co-relation 3252. Up to 184 conditions per place. [2025-02-06 13:06:56,157 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 168 selfloop transitions, 144 changer transitions 8/321 dead transitions. [2025-02-06 13:06:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 321 transitions, 2135 flow [2025-02-06 13:06:56,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-06 13:06:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-02-06 13:06:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 551 transitions. [2025-02-06 13:06:56,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3891242937853107 [2025-02-06 13:06:56,159 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 356 flow. Second operand 59 states and 551 transitions. [2025-02-06 13:06:56,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 321 transitions, 2135 flow [2025-02-06 13:06:56,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 321 transitions, 2059 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-02-06 13:06:56,171 INFO L231 Difference]: Finished difference. Result has 133 places, 174 transitions, 1405 flow [2025-02-06 13:06:56,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=1405, PETRI_PLACES=133, PETRI_TRANSITIONS=174} [2025-02-06 13:06:56,173 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 107 predicate places. [2025-02-06 13:06:56,173 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 174 transitions, 1405 flow [2025-02-06 13:06:56,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 13:06:56,173 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:56,173 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:56,181 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 13:06:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:56,374 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:56,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:56,375 INFO L85 PathProgramCache]: Analyzing trace with hash 214733612, now seen corresponding path program 4 times [2025-02-06 13:06:56,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31236054] [2025-02-06 13:06:56,375 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:56,379 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:56,386 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:56,387 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:06:56,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:56,558 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 13:06:56,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31236054] [2025-02-06 13:06:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31236054] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398978096] [2025-02-06 13:06:56,559 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:06:56,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:56,560 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 13:06:56,562 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 13:06:56,587 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:56,596 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:56,596 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:06:56,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:56,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:06:56,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:56,743 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 13:06:56,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:06:56,880 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 13:06:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398978096] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:06:56,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:06:56,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:06:56,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515097693] [2025-02-06 13:06:56,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:06:56,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:06:56,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:56,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:06:56,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:06:56,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:56,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 174 transitions, 1405 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:06:56,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:56,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:56,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:57,741 INFO L124 PetriNetUnfolderBase]: 639/1201 cut-off events. [2025-02-06 13:06:57,741 INFO L125 PetriNetUnfolderBase]: For 5895/5895 co-relation queries the response was YES. [2025-02-06 13:06:57,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5719 conditions, 1201 events. 639/1201 cut-off events. For 5895/5895 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6114 event pairs, 32 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 5592. Up to 361 conditions per place. [2025-02-06 13:06:57,750 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 158 selfloop transitions, 178 changer transitions 8/345 dead transitions. [2025-02-06 13:06:57,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 345 transitions, 3249 flow [2025-02-06 13:06:57,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-06 13:06:57,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2025-02-06 13:06:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 355 transitions. [2025-02-06 13:06:57,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3997747747747748 [2025-02-06 13:06:57,754 INFO L175 Difference]: Start difference. First operand has 133 places, 174 transitions, 1405 flow. Second operand 37 states and 355 transitions. [2025-02-06 13:06:57,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 345 transitions, 3249 flow [2025-02-06 13:06:57,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 345 transitions, 2619 flow, removed 217 selfloop flow, removed 16 redundant places. [2025-02-06 13:06:57,780 INFO L231 Difference]: Finished difference. Result has 163 places, 245 transitions, 1941 flow [2025-02-06 13:06:57,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1941, PETRI_PLACES=163, PETRI_TRANSITIONS=245} [2025-02-06 13:06:57,780 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2025-02-06 13:06:57,780 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 245 transitions, 1941 flow [2025-02-06 13:06:57,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:06:57,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:57,780 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:57,788 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 13:06:57,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:57,981 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:57,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:57,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1746820308, now seen corresponding path program 5 times [2025-02-06 13:06:57,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:57,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206298812] [2025-02-06 13:06:57,981 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:06:57,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:57,984 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:57,987 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:57,987 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:57,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:58,118 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 13:06:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206298812] [2025-02-06 13:06:58,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206298812] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:58,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:58,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:58,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813988237] [2025-02-06 13:06:58,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:58,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:58,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:58,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:58,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:58,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:58,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 245 transitions, 1941 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:58,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:58,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:58,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:58,313 INFO L124 PetriNetUnfolderBase]: 645/1213 cut-off events. [2025-02-06 13:06:58,313 INFO L125 PetriNetUnfolderBase]: For 6948/6948 co-relation queries the response was YES. [2025-02-06 13:06:58,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 1213 events. 645/1213 cut-off events. For 6948/6948 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6189 event pairs, 77 based on Foata normal form. 1/1212 useless extension candidates. Maximal degree in co-relation 5520. Up to 1122 conditions per place. [2025-02-06 13:06:58,322 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 245 selfloop transitions, 19 changer transitions 4/269 dead transitions. [2025-02-06 13:06:58,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 269 transitions, 2615 flow [2025-02-06 13:06:58,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:06:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:06:58,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 90 transitions. [2025-02-06 13:06:58,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-02-06 13:06:58,323 INFO L175 Difference]: Start difference. First operand has 163 places, 245 transitions, 1941 flow. Second operand 10 states and 90 transitions. [2025-02-06 13:06:58,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 269 transitions, 2615 flow [2025-02-06 13:06:58,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 269 transitions, 2541 flow, removed 18 selfloop flow, removed 7 redundant places. [2025-02-06 13:06:58,347 INFO L231 Difference]: Finished difference. Result has 167 places, 250 transitions, 1981 flow [2025-02-06 13:06:58,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1981, PETRI_PLACES=167, PETRI_TRANSITIONS=250} [2025-02-06 13:06:58,348 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 141 predicate places. [2025-02-06 13:06:58,348 INFO L471 AbstractCegarLoop]: Abstraction has has 167 places, 250 transitions, 1981 flow [2025-02-06 13:06:58,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:58,348 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:58,348 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:58,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 13:06:58,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:58,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash -17772974, now seen corresponding path program 6 times [2025-02-06 13:06:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:58,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283288554] [2025-02-06 13:06:58,349 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:06:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:58,351 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:58,354 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:58,354 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-02-06 13:06:58,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:58,477 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 13:06:58,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:58,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283288554] [2025-02-06 13:06:58,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283288554] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:58,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:58,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:58,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975358967] [2025-02-06 13:06:58,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:58,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:58,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:58,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:58,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:58,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:58,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 250 transitions, 1981 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:58,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:58,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:58,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:58,709 INFO L124 PetriNetUnfolderBase]: 656/1234 cut-off events. [2025-02-06 13:06:58,709 INFO L125 PetriNetUnfolderBase]: For 6820/6820 co-relation queries the response was YES. [2025-02-06 13:06:58,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 1234 events. 656/1234 cut-off events. For 6820/6820 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6307 event pairs, 77 based on Foata normal form. 1/1233 useless extension candidates. Maximal degree in co-relation 5869. Up to 1137 conditions per place. [2025-02-06 13:06:58,716 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 249 selfloop transitions, 23 changer transitions 4/277 dead transitions. [2025-02-06 13:06:58,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 277 transitions, 2670 flow [2025-02-06 13:06:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:06:58,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:06:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2025-02-06 13:06:58,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-02-06 13:06:58,717 INFO L175 Difference]: Start difference. First operand has 167 places, 250 transitions, 1981 flow. Second operand 11 states and 99 transitions. [2025-02-06 13:06:58,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 277 transitions, 2670 flow [2025-02-06 13:06:58,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 277 transitions, 2638 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-02-06 13:06:58,739 INFO L231 Difference]: Finished difference. Result has 175 places, 256 transitions, 2069 flow [2025-02-06 13:06:58,739 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2069, PETRI_PLACES=175, PETRI_TRANSITIONS=256} [2025-02-06 13:06:58,740 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 149 predicate places. [2025-02-06 13:06:58,740 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 256 transitions, 2069 flow [2025-02-06 13:06:58,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:58,740 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:58,740 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:58,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 13:06:58,740 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:58,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:58,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1735522034, now seen corresponding path program 7 times [2025-02-06 13:06:58,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:58,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712839708] [2025-02-06 13:06:58,741 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:06:58,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:58,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:58,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:58,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:06:58,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:58,891 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 13:06:58,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:58,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712839708] [2025-02-06 13:06:58,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712839708] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:58,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:58,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:58,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144127785] [2025-02-06 13:06:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:58,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:58,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:58,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:58,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:58,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:58,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 256 transitions, 2069 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:58,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:58,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:59,154 INFO L124 PetriNetUnfolderBase]: 689/1290 cut-off events. [2025-02-06 13:06:59,154 INFO L125 PetriNetUnfolderBase]: For 7015/7015 co-relation queries the response was YES. [2025-02-06 13:06:59,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6223 conditions, 1290 events. 689/1290 cut-off events. For 7015/7015 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6652 event pairs, 77 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 6166. Up to 1157 conditions per place. [2025-02-06 13:06:59,162 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 260 selfloop transitions, 32 changer transitions 4/297 dead transitions. [2025-02-06 13:06:59,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 297 transitions, 2897 flow [2025-02-06 13:06:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:06:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:06:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2025-02-06 13:06:59,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2025-02-06 13:06:59,163 INFO L175 Difference]: Start difference. First operand has 175 places, 256 transitions, 2069 flow. Second operand 11 states and 106 transitions. [2025-02-06 13:06:59,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 297 transitions, 2897 flow [2025-02-06 13:06:59,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 297 transitions, 2852 flow, removed 4 selfloop flow, removed 7 redundant places. [2025-02-06 13:06:59,192 INFO L231 Difference]: Finished difference. Result has 180 places, 266 transitions, 2208 flow [2025-02-06 13:06:59,192 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2208, PETRI_PLACES=180, PETRI_TRANSITIONS=266} [2025-02-06 13:06:59,192 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2025-02-06 13:06:59,193 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 266 transitions, 2208 flow [2025-02-06 13:06:59,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:59,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:59,193 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:59,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 13:06:59,193 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:59,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2131023562, now seen corresponding path program 8 times [2025-02-06 13:06:59,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:59,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677551228] [2025-02-06 13:06:59,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:06:59,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:59,197 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:06:59,199 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:59,199 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:06:59,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:59,320 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 13:06:59,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:59,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677551228] [2025-02-06 13:06:59,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677551228] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:06:59,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:06:59,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:06:59,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216823740] [2025-02-06 13:06:59,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:06:59,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:06:59,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:06:59,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:06:59,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:06:59,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:06:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 266 transitions, 2208 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:59,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:06:59,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:06:59,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:06:59,531 INFO L124 PetriNetUnfolderBase]: 693/1302 cut-off events. [2025-02-06 13:06:59,531 INFO L125 PetriNetUnfolderBase]: For 7203/7203 co-relation queries the response was YES. [2025-02-06 13:06:59,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6361 conditions, 1302 events. 693/1302 cut-off events. For 7203/7203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6731 event pairs, 79 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 6302. Up to 1204 conditions per place. [2025-02-06 13:06:59,540 INFO L140 encePairwiseOnDemand]: 14/24 looper letters, 257 selfloop transitions, 25 changer transitions 4/287 dead transitions. [2025-02-06 13:06:59,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 287 transitions, 2888 flow [2025-02-06 13:06:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 13:06:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 13:06:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 98 transitions. [2025-02-06 13:06:59,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2025-02-06 13:06:59,541 INFO L175 Difference]: Start difference. First operand has 180 places, 266 transitions, 2208 flow. Second operand 11 states and 98 transitions. [2025-02-06 13:06:59,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 287 transitions, 2888 flow [2025-02-06 13:06:59,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 287 transitions, 2828 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-02-06 13:06:59,570 INFO L231 Difference]: Finished difference. Result has 184 places, 269 transitions, 2246 flow [2025-02-06 13:06:59,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2150, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2246, PETRI_PLACES=184, PETRI_TRANSITIONS=269} [2025-02-06 13:06:59,571 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 158 predicate places. [2025-02-06 13:06:59,571 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 269 transitions, 2246 flow [2025-02-06 13:06:59,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:06:59,571 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:06:59,571 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:06:59,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 13:06:59,571 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:06:59,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:06:59,572 INFO L85 PathProgramCache]: Analyzing trace with hash -169478578, now seen corresponding path program 9 times [2025-02-06 13:06:59,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:06:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276518791] [2025-02-06 13:06:59,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:06:59,574 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:59,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:59,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:06:59,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:59,695 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 13:06:59,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:06:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276518791] [2025-02-06 13:06:59,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276518791] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:06:59,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451509100] [2025-02-06 13:06:59,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:06:59,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:06:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:06:59,699 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 13:06:59,700 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 13:06:59,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:06:59,732 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:06:59,732 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:06:59,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:06:59,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:06:59,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:06:59,942 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 13:06:59,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:00,085 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 13:07:00,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451509100] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:00,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356222339] [2025-02-06 13:07:00,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:00,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:00,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:00,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:00,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:00,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:00,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 269 transitions, 2246 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:00,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:00,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:00,652 INFO L124 PetriNetUnfolderBase]: 752/1425 cut-off events. [2025-02-06 13:07:00,654 INFO L125 PetriNetUnfolderBase]: For 7636/7636 co-relation queries the response was YES. [2025-02-06 13:07:00,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 1425 events. 752/1425 cut-off events. For 7636/7636 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7663 event pairs, 59 based on Foata normal form. 2/1423 useless extension candidates. Maximal degree in co-relation 6831. Up to 970 conditions per place. [2025-02-06 13:07:00,678 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 154 selfloop transitions, 176 changer transitions 8/339 dead transitions. [2025-02-06 13:07:00,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 339 transitions, 3361 flow [2025-02-06 13:07:00,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 13:07:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-02-06 13:07:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 156 transitions. [2025-02-06 13:07:00,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2025-02-06 13:07:00,679 INFO L175 Difference]: Start difference. First operand has 184 places, 269 transitions, 2246 flow. Second operand 18 states and 156 transitions. [2025-02-06 13:07:00,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 339 transitions, 3361 flow [2025-02-06 13:07:00,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 339 transitions, 3300 flow, removed 12 selfloop flow, removed 7 redundant places. [2025-02-06 13:07:00,755 INFO L231 Difference]: Finished difference. Result has 201 places, 305 transitions, 3172 flow [2025-02-06 13:07:00,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3172, PETRI_PLACES=201, PETRI_TRANSITIONS=305} [2025-02-06 13:07:00,758 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2025-02-06 13:07:00,758 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 305 transitions, 3172 flow [2025-02-06 13:07:00,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:00,759 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:00,759 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:00,773 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 13:07:00,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:00,961 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:00,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 401976228, now seen corresponding path program 10 times [2025-02-06 13:07:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110666266] [2025-02-06 13:07:00,962 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:07:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:00,970 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:00,972 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:00,972 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:07:00,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:01,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:01,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110666266] [2025-02-06 13:07:01,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110666266] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:07:01,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:07:01,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:07:01,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800508124] [2025-02-06 13:07:01,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:07:01,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:07:01,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:01,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:07:01,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:07:01,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:01,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 305 transitions, 3172 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:07:01,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:01,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:01,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:01,530 INFO L124 PetriNetUnfolderBase]: 754/1429 cut-off events. [2025-02-06 13:07:01,530 INFO L125 PetriNetUnfolderBase]: For 9045/9045 co-relation queries the response was YES. [2025-02-06 13:07:01,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7908 conditions, 1429 events. 754/1429 cut-off events. For 9045/9045 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7700 event pairs, 82 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 7843. Up to 1337 conditions per place. [2025-02-06 13:07:01,539 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 297 selfloop transitions, 21 changer transitions 4/323 dead transitions. [2025-02-06 13:07:01,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 323 transitions, 3924 flow [2025-02-06 13:07:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:07:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:07:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 89 transitions. [2025-02-06 13:07:01,540 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2025-02-06 13:07:01,540 INFO L175 Difference]: Start difference. First operand has 201 places, 305 transitions, 3172 flow. Second operand 10 states and 89 transitions. [2025-02-06 13:07:01,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 323 transitions, 3924 flow [2025-02-06 13:07:01,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 323 transitions, 3774 flow, removed 12 selfloop flow, removed 12 redundant places. [2025-02-06 13:07:01,577 INFO L231 Difference]: Finished difference. Result has 199 places, 307 transitions, 3111 flow [2025-02-06 13:07:01,577 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3111, PETRI_PLACES=199, PETRI_TRANSITIONS=307} [2025-02-06 13:07:01,577 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 173 predicate places. [2025-02-06 13:07:01,577 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 307 transitions, 3111 flow [2025-02-06 13:07:01,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:07:01,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:01,578 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:01,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 13:07:01,578 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:01,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash 413274502, now seen corresponding path program 11 times [2025-02-06 13:07:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676322363] [2025-02-06 13:07:01,578 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:01,581 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:01,583 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:01,583 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:01,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:01,695 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 13:07:01,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:01,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676322363] [2025-02-06 13:07:01,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676322363] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:01,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623782595] [2025-02-06 13:07:01,697 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:01,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:01,699 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 13:07:01,700 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 13:07:01,724 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:01,733 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:01,733 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:01,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:01,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:07:01,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:01,904 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 13:07:01,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:02,052 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 13:07:02,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623782595] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:02,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:02,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:02,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082254103] [2025-02-06 13:07:02,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:02,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:02,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:02,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:02,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:02,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:02,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 307 transitions, 3111 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:02,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:02,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:02,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:03,516 INFO L124 PetriNetUnfolderBase]: 1036/1978 cut-off events. [2025-02-06 13:07:03,516 INFO L125 PetriNetUnfolderBase]: For 12918/12918 co-relation queries the response was YES. [2025-02-06 13:07:03,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10652 conditions, 1978 events. 1036/1978 cut-off events. For 12918/12918 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11862 event pairs, 49 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 10585. Up to 809 conditions per place. [2025-02-06 13:07:03,532 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 233 selfloop transitions, 307 changer transitions 13/554 dead transitions. [2025-02-06 13:07:03,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 554 transitions, 5992 flow [2025-02-06 13:07:03,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-02-06 13:07:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2025-02-06 13:07:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 478 transitions. [2025-02-06 13:07:03,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34941520467836257 [2025-02-06 13:07:03,534 INFO L175 Difference]: Start difference. First operand has 199 places, 307 transitions, 3111 flow. Second operand 57 states and 478 transitions. [2025-02-06 13:07:03,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 554 transitions, 5992 flow [2025-02-06 13:07:03,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 554 transitions, 5936 flow, removed 9 selfloop flow, removed 7 redundant places. [2025-02-06 13:07:03,588 INFO L231 Difference]: Finished difference. Result has 267 places, 441 transitions, 5406 flow [2025-02-06 13:07:03,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=5406, PETRI_PLACES=267, PETRI_TRANSITIONS=441} [2025-02-06 13:07:03,589 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 241 predicate places. [2025-02-06 13:07:03,589 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 441 transitions, 5406 flow [2025-02-06 13:07:03,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:03,589 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:03,589 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:03,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:03,790 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,SelfDestructingSolverStorable16 [2025-02-06 13:07:03,790 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:03,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:03,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1493977900, now seen corresponding path program 12 times [2025-02-06 13:07:03,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:03,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138673816] [2025-02-06 13:07:03,791 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:03,793 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:03,795 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:03,795 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 13:07:03,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:03,901 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 13:07:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138673816] [2025-02-06 13:07:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138673816] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667070319] [2025-02-06 13:07:03,901 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:03,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:03,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:03,904 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 13:07:03,907 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 13:07:03,930 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:03,937 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:03,937 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-02-06 13:07:03,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:03,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:07:03,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:04,135 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 13:07:04,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:04,243 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 13:07:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667070319] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:04,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:04,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:04,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316542694] [2025-02-06 13:07:04,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:04,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:04,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:04,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:04,248 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:04,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 441 transitions, 5406 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:04,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:04,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:04,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:04,752 INFO L124 PetriNetUnfolderBase]: 1041/1991 cut-off events. [2025-02-06 13:07:04,752 INFO L125 PetriNetUnfolderBase]: For 23109/23109 co-relation queries the response was YES. [2025-02-06 13:07:04,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13047 conditions, 1991 events. 1041/1991 cut-off events. For 23109/23109 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12006 event pairs, 62 based on Foata normal form. 2/1993 useless extension candidates. Maximal degree in co-relation 12900. Up to 1328 conditions per place. [2025-02-06 13:07:04,768 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 234 selfloop transitions, 242 changer transitions 8/485 dead transitions. [2025-02-06 13:07:04,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 485 transitions, 6679 flow [2025-02-06 13:07:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 13:07:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-02-06 13:07:04,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 158 transitions. [2025-02-06 13:07:04,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34649122807017546 [2025-02-06 13:07:04,769 INFO L175 Difference]: Start difference. First operand has 267 places, 441 transitions, 5406 flow. Second operand 19 states and 158 transitions. [2025-02-06 13:07:04,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 485 transitions, 6679 flow [2025-02-06 13:07:04,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 485 transitions, 6284 flow, removed 137 selfloop flow, removed 16 redundant places. [2025-02-06 13:07:04,890 INFO L231 Difference]: Finished difference. Result has 273 places, 452 transitions, 5941 flow [2025-02-06 13:07:04,890 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5941, PETRI_PLACES=273, PETRI_TRANSITIONS=452} [2025-02-06 13:07:04,891 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 247 predicate places. [2025-02-06 13:07:04,891 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 452 transitions, 5941 flow [2025-02-06 13:07:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:04,891 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:04,891 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:04,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:05,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 13:07:05,092 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:05,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash 418266744, now seen corresponding path program 13 times [2025-02-06 13:07:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:05,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407384285] [2025-02-06 13:07:05,092 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:07:05,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:05,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:07:05,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:05,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:05,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:05,196 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 13:07:05,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:05,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407384285] [2025-02-06 13:07:05,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407384285] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:05,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685479093] [2025-02-06 13:07:05,197 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:07:05,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:05,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:05,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:05,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 13:07:05,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:07:05,234 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:05,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:05,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:05,235 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:07:05,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:05,370 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 13:07:05,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:05,486 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 13:07:05,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685479093] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:05,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:05,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906516473] [2025-02-06 13:07:05,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:05,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:05,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:05,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:05,487 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:05,493 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:05,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 452 transitions, 5941 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:05,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:05,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:05,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:06,121 INFO L124 PetriNetUnfolderBase]: 1047/2009 cut-off events. [2025-02-06 13:07:06,121 INFO L125 PetriNetUnfolderBase]: For 23329/23329 co-relation queries the response was YES. [2025-02-06 13:07:06,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13500 conditions, 2009 events. 1047/2009 cut-off events. For 23329/23329 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12180 event pairs, 62 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 13413. Up to 1340 conditions per place. [2025-02-06 13:07:06,133 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 222 selfloop transitions, 267 changer transitions 8/498 dead transitions. [2025-02-06 13:07:06,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 498 transitions, 7235 flow [2025-02-06 13:07:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 13:07:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 13:07:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 201 transitions. [2025-02-06 13:07:06,134 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.335 [2025-02-06 13:07:06,134 INFO L175 Difference]: Start difference. First operand has 273 places, 452 transitions, 5941 flow. Second operand 25 states and 201 transitions. [2025-02-06 13:07:06,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 498 transitions, 7235 flow [2025-02-06 13:07:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 498 transitions, 7188 flow, removed 14 selfloop flow, removed 5 redundant places. [2025-02-06 13:07:06,233 INFO L231 Difference]: Finished difference. Result has 297 places, 458 transitions, 6857 flow [2025-02-06 13:07:06,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=5895, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6857, PETRI_PLACES=297, PETRI_TRANSITIONS=458} [2025-02-06 13:07:06,233 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 271 predicate places. [2025-02-06 13:07:06,233 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 458 transitions, 6857 flow [2025-02-06 13:07:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:06,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:06,234 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:06,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:06,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:06,438 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:06,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 989721550, now seen corresponding path program 14 times [2025-02-06 13:07:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519784983] [2025-02-06 13:07:06,439 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:07:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:06,441 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 13:07:06,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:06,443 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 13:07:06,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:06,548 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 13:07:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519784983] [2025-02-06 13:07:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519784983] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:07:06,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:07:06,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 13:07:06,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665573628] [2025-02-06 13:07:06,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:07:06,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 13:07:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:06,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 13:07:06,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 13:07:06,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:06,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 458 transitions, 6857 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:07:06,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:06,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:06,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:06,902 INFO L124 PetriNetUnfolderBase]: 1049/2013 cut-off events. [2025-02-06 13:07:06,905 INFO L125 PetriNetUnfolderBase]: For 27956/27956 co-relation queries the response was YES. [2025-02-06 13:07:06,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14655 conditions, 2013 events. 1049/2013 cut-off events. For 27956/27956 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12170 event pairs, 109 based on Foata normal form. 1/2014 useless extension candidates. Maximal degree in co-relation 14563. Up to 1914 conditions per place. [2025-02-06 13:07:06,928 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 445 selfloop transitions, 24 changer transitions 4/474 dead transitions. [2025-02-06 13:07:06,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 474 transitions, 7936 flow [2025-02-06 13:07:06,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 13:07:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 13:07:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions. [2025-02-06 13:07:06,930 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3625 [2025-02-06 13:07:06,930 INFO L175 Difference]: Start difference. First operand has 297 places, 458 transitions, 6857 flow. Second operand 10 states and 87 transitions. [2025-02-06 13:07:06,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 474 transitions, 7936 flow [2025-02-06 13:07:07,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 474 transitions, 7502 flow, removed 24 selfloop flow, removed 17 redundant places. [2025-02-06 13:07:07,045 INFO L231 Difference]: Finished difference. Result has 290 places, 460 transitions, 6537 flow [2025-02-06 13:07:07,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6423, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6537, PETRI_PLACES=290, PETRI_TRANSITIONS=460} [2025-02-06 13:07:07,046 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 264 predicate places. [2025-02-06 13:07:07,046 INFO L471 AbstractCegarLoop]: Abstraction has has 290 places, 460 transitions, 6537 flow [2025-02-06 13:07:07,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:07:07,046 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:07,047 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:07,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 13:07:07,047 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:07,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 890197304, now seen corresponding path program 15 times [2025-02-06 13:07:07,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:07,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727189369] [2025-02-06 13:07:07,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:07:07,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:07,050 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:07,054 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:07,054 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:07:07,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:07,262 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 13:07:07,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:07,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727189369] [2025-02-06 13:07:07,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727189369] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:07,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757567917] [2025-02-06 13:07:07,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:07:07,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:07,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:07,265 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:07,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 13:07:07,288 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:07,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:07,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:07:07,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:07,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:07:07,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:07,437 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 13:07:07,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:07,591 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 13:07:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757567917] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:07,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054185919] [2025-02-06 13:07:07,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:07,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:07,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:07,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:07,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:07,595 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 460 transitions, 6537 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:08,999 INFO L124 PetriNetUnfolderBase]: 1282/2452 cut-off events. [2025-02-06 13:07:09,000 INFO L125 PetriNetUnfolderBase]: For 33757/33757 co-relation queries the response was YES. [2025-02-06 13:07:09,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17353 conditions, 2452 events. 1282/2452 cut-off events. For 33757/33757 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15418 event pairs, 66 based on Foata normal form. 6/2458 useless extension candidates. Maximal degree in co-relation 17260. Up to 996 conditions per place. [2025-02-06 13:07:09,053 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 251 selfloop transitions, 426 changer transitions 12/690 dead transitions. [2025-02-06 13:07:09,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 690 transitions, 10609 flow [2025-02-06 13:07:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-06 13:07:09,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2025-02-06 13:07:09,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 426 transitions. [2025-02-06 13:07:09,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2025-02-06 13:07:09,055 INFO L175 Difference]: Start difference. First operand has 290 places, 460 transitions, 6537 flow. Second operand 48 states and 426 transitions. [2025-02-06 13:07:09,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 690 transitions, 10609 flow [2025-02-06 13:07:09,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 690 transitions, 10481 flow, removed 13 selfloop flow, removed 9 redundant places. [2025-02-06 13:07:09,190 INFO L231 Difference]: Finished difference. Result has 347 places, 588 transitions, 9840 flow [2025-02-06 13:07:09,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=9840, PETRI_PLACES=347, PETRI_TRANSITIONS=588} [2025-02-06 13:07:09,190 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 321 predicate places. [2025-02-06 13:07:09,191 INFO L471 AbstractCegarLoop]: Abstraction has has 347 places, 588 transitions, 9840 flow [2025-02-06 13:07:09,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:09,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:09,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:09,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:09,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:09,392 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:09,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1001019824, now seen corresponding path program 16 times [2025-02-06 13:07:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949784244] [2025-02-06 13:07:09,392 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:07:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:09,394 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:09,396 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:09,396 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:07:09,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:09,495 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 13:07:09,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949784244] [2025-02-06 13:07:09,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949784244] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:09,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929650050] [2025-02-06 13:07:09,496 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:07:09,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:09,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:09,498 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:09,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 13:07:09,524 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 16 statements into 2 equivalence classes. [2025-02-06 13:07:09,532 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 13:07:09,532 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:07:09,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:09,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 13:07:09,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:09,681 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 13:07:09,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:09,808 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 13:07:09,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929650050] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:09,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2025-02-06 13:07:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96704052] [2025-02-06 13:07:09,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:09,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 13:07:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:09,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 13:07:09,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2025-02-06 13:07:09,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:09,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 588 transitions, 9840 flow. Second operand has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:09,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:11,082 INFO L124 PetriNetUnfolderBase]: 1278/2446 cut-off events. [2025-02-06 13:07:11,082 INFO L125 PetriNetUnfolderBase]: For 53236/53236 co-relation queries the response was YES. [2025-02-06 13:07:11,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20061 conditions, 2446 events. 1278/2446 cut-off events. For 53236/53236 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15356 event pairs, 65 based on Foata normal form. 3/2449 useless extension candidates. Maximal degree in co-relation 19948. Up to 1123 conditions per place. [2025-02-06 13:07:11,104 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 229 selfloop transitions, 439 changer transitions 9/678 dead transitions. [2025-02-06 13:07:11,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 678 transitions, 11942 flow [2025-02-06 13:07:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-06 13:07:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-02-06 13:07:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 404 transitions. [2025-02-06 13:07:11,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3435374149659864 [2025-02-06 13:07:11,106 INFO L175 Difference]: Start difference. First operand has 347 places, 588 transitions, 9840 flow. Second operand 49 states and 404 transitions. [2025-02-06 13:07:11,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 678 transitions, 11942 flow [2025-02-06 13:07:11,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 678 transitions, 11379 flow, removed 237 selfloop flow, removed 16 redundant places. [2025-02-06 13:07:11,405 INFO L231 Difference]: Finished difference. Result has 380 places, 604 transitions, 10715 flow [2025-02-06 13:07:11,405 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9295, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=421, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=10715, PETRI_PLACES=380, PETRI_TRANSITIONS=604} [2025-02-06 13:07:11,406 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 354 predicate places. [2025-02-06 13:07:11,406 INFO L471 AbstractCegarLoop]: Abstraction has has 380 places, 604 transitions, 10715 flow [2025-02-06 13:07:11,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.68) internal successors, (142), 25 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 13:07:11,406 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:11,406 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:11,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 13:07:11,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:11,607 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:11,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1440820973, now seen corresponding path program 17 times [2025-02-06 13:07:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548830446] [2025-02-06 13:07:11,607 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:11,610 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:11,611 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:11,611 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:11,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:11,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:11,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548830446] [2025-02-06 13:07:11,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548830446] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:11,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944165862] [2025-02-06 13:07:11,822 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:07:11,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:11,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:11,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:11,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 13:07:11,852 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:11,860 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:11,860 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:11,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:11,861 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:07:11,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:12,192 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944165862] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:12,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:07:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452356789] [2025-02-06 13:07:12,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:12,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:07:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:12,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:07:12,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=791, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:07:12,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:12,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 604 transitions, 10715 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 13:07:12,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:12,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:12,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:16,634 INFO L124 PetriNetUnfolderBase]: 2784/5110 cut-off events. [2025-02-06 13:07:16,635 INFO L125 PetriNetUnfolderBase]: For 150363/150363 co-relation queries the response was YES. [2025-02-06 13:07:16,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45612 conditions, 5110 events. 2784/5110 cut-off events. For 150363/150363 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 34754 event pairs, 92 based on Foata normal form. 45/5155 useless extension candidates. Maximal degree in co-relation 45376. Up to 1038 conditions per place. [2025-02-06 13:07:16,746 INFO L140 encePairwiseOnDemand]: 11/24 looper letters, 446 selfloop transitions, 1046 changer transitions 23/1516 dead transitions. [2025-02-06 13:07:16,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1516 transitions, 28857 flow [2025-02-06 13:07:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2025-02-06 13:07:16,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2025-02-06 13:07:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 1026 transitions. [2025-02-06 13:07:16,748 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37831858407079644 [2025-02-06 13:07:16,748 INFO L175 Difference]: Start difference. First operand has 380 places, 604 transitions, 10715 flow. Second operand 113 states and 1026 transitions. [2025-02-06 13:07:16,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1516 transitions, 28857 flow [2025-02-06 13:07:17,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1516 transitions, 28316 flow, removed 107 selfloop flow, removed 30 redundant places. [2025-02-06 13:07:17,620 INFO L231 Difference]: Finished difference. Result has 503 places, 1236 transitions, 25372 flow [2025-02-06 13:07:17,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=10313, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=480, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=25372, PETRI_PLACES=503, PETRI_TRANSITIONS=1236} [2025-02-06 13:07:17,620 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 477 predicate places. [2025-02-06 13:07:17,621 INFO L471 AbstractCegarLoop]: Abstraction has has 503 places, 1236 transitions, 25372 flow [2025-02-06 13:07:17,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 13:07:17,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:17,621 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:17,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:17,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:17,822 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:17,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:17,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1750356471, now seen corresponding path program 1 times [2025-02-06 13:07:17,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:17,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395432402] [2025-02-06 13:07:17,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:07:17,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:17,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:07:17,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:17,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:17,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:17,940 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 13:07:17,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395432402] [2025-02-06 13:07:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395432402] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:17,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847504735] [2025-02-06 13:07:17,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:07:17,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:17,943 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:17,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 13:07:17,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:07:17,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:17,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:17,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:17,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 13:07:17,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:18,134 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 13:07:18,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:18,300 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 13:07:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847504735] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:18,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2025-02-06 13:07:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870859625] [2025-02-06 13:07:18,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:18,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-06 13:07:18,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:18,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-06 13:07:18,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 13:07:18,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:18,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 1236 transitions, 25372 flow. Second operand has 33 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 13:07:18,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:18,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:20,059 INFO L124 PetriNetUnfolderBase]: 2752/5068 cut-off events. [2025-02-06 13:07:20,060 INFO L125 PetriNetUnfolderBase]: For 295933/295933 co-relation queries the response was YES. [2025-02-06 13:07:20,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54280 conditions, 5068 events. 2752/5068 cut-off events. For 295933/295933 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34558 event pairs, 98 based on Foata normal form. 33/5101 useless extension candidates. Maximal degree in co-relation 54115. Up to 2572 conditions per place. [2025-02-06 13:07:20,130 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 611 selfloop transitions, 660 changer transitions 19/1291 dead transitions. [2025-02-06 13:07:20,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1291 transitions, 28693 flow [2025-02-06 13:07:20,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 13:07:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-02-06 13:07:20,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 227 transitions. [2025-02-06 13:07:20,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.411231884057971 [2025-02-06 13:07:20,131 INFO L175 Difference]: Start difference. First operand has 503 places, 1236 transitions, 25372 flow. Second operand 23 states and 227 transitions. [2025-02-06 13:07:20,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1291 transitions, 28693 flow [2025-02-06 13:07:21,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1291 transitions, 27473 flow, removed 533 selfloop flow, removed 22 redundant places. [2025-02-06 13:07:21,748 INFO L231 Difference]: Finished difference. Result has 502 places, 1221 transitions, 25865 flow [2025-02-06 13:07:21,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=23580, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=25865, PETRI_PLACES=502, PETRI_TRANSITIONS=1221} [2025-02-06 13:07:21,749 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 476 predicate places. [2025-02-06 13:07:21,749 INFO L471 AbstractCegarLoop]: Abstraction has has 502 places, 1221 transitions, 25865 flow [2025-02-06 13:07:21,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.424242424242424) internal successors, (179), 33 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 13:07:21,749 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:21,749 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:21,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 13:07:21,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 13:07:21,950 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:21,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:21,950 INFO L85 PathProgramCache]: Analyzing trace with hash -152875977, now seen corresponding path program 18 times [2025-02-06 13:07:21,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945249598] [2025-02-06 13:07:21,950 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:21,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:21,953 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-02-06 13:07:21,955 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:21,955 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:07:21,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:22,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945249598] [2025-02-06 13:07:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945249598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:22,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503964162] [2025-02-06 13:07:22,082 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 13:07:22,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:22,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:22,084 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:22,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 13:07:22,113 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 3 equivalence classes. [2025-02-06 13:07:22,125 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:22,125 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-06 13:07:22,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:22,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:07:22,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:22,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:22,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503964162] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:22,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:22,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:07:22,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156957551] [2025-02-06 13:07:22,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:22,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:07:22,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:22,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:07:22,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:07:22,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:22,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1221 transitions, 25865 flow. Second operand has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 13:07:22,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:22,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:26,233 INFO L124 PetriNetUnfolderBase]: 3358/6214 cut-off events. [2025-02-06 13:07:26,233 INFO L125 PetriNetUnfolderBase]: For 371689/371689 co-relation queries the response was YES. [2025-02-06 13:07:26,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66569 conditions, 6214 events. 3358/6214 cut-off events. For 371689/371689 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43826 event pairs, 163 based on Foata normal form. 3/6217 useless extension candidates. Maximal degree in co-relation 66282. Up to 2318 conditions per place. [2025-02-06 13:07:26,323 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 674 selfloop transitions, 1004 changer transitions 12/1691 dead transitions. [2025-02-06 13:07:26,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1691 transitions, 37921 flow [2025-02-06 13:07:26,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-02-06 13:07:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2025-02-06 13:07:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 586 transitions. [2025-02-06 13:07:26,325 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39381720430107525 [2025-02-06 13:07:26,325 INFO L175 Difference]: Start difference. First operand has 502 places, 1221 transitions, 25865 flow. Second operand 62 states and 586 transitions. [2025-02-06 13:07:26,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 1691 transitions, 37921 flow [2025-02-06 13:07:28,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1691 transitions, 37492 flow, removed 92 selfloop flow, removed 15 redundant places. [2025-02-06 13:07:28,201 INFO L231 Difference]: Finished difference. Result has 547 places, 1466 transitions, 33164 flow [2025-02-06 13:07:28,202 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=25571, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=820, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=33164, PETRI_PLACES=547, PETRI_TRANSITIONS=1466} [2025-02-06 13:07:28,202 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 521 predicate places. [2025-02-06 13:07:28,202 INFO L471 AbstractCegarLoop]: Abstraction has has 547 places, 1466 transitions, 33164 flow [2025-02-06 13:07:28,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.67741935483871) internal successors, (176), 31 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 13:07:28,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:28,203 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:28,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 13:07:28,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-06 13:07:28,407 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:28,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 804614981, now seen corresponding path program 19 times [2025-02-06 13:07:28,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:28,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144332927] [2025-02-06 13:07:28,408 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:07:28,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:28,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:07:28,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:28,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:28,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144332927] [2025-02-06 13:07:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144332927] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:28,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371768804] [2025-02-06 13:07:28,549 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 13:07:28,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:28,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:28,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:28,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 13:07:28,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 13:07:28,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:28,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:07:28,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:28,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:07:28,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:28,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371768804] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:28,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:28,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:07:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889855607] [2025-02-06 13:07:28,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:28,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:07:28,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:28,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:07:28,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=787, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:07:28,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:28,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 1466 transitions, 33164 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:07:28,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:28,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:28,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:33,290 INFO L124 PetriNetUnfolderBase]: 4237/7810 cut-off events. [2025-02-06 13:07:33,290 INFO L125 PetriNetUnfolderBase]: For 499487/499487 co-relation queries the response was YES. [2025-02-06 13:07:33,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88561 conditions, 7810 events. 4237/7810 cut-off events. For 499487/499487 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 57529 event pairs, 228 based on Foata normal form. 4/7814 useless extension candidates. Maximal degree in co-relation 88144. Up to 3450 conditions per place. [2025-02-06 13:07:33,398 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 800 selfloop transitions, 1254 changer transitions 13/2068 dead transitions. [2025-02-06 13:07:33,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 2068 transitions, 49576 flow [2025-02-06 13:07:33,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2025-02-06 13:07:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2025-02-06 13:07:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 822 transitions. [2025-02-06 13:07:33,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2025-02-06 13:07:33,400 INFO L175 Difference]: Start difference. First operand has 547 places, 1466 transitions, 33164 flow. Second operand 93 states and 822 transitions. [2025-02-06 13:07:33,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 2068 transitions, 49576 flow [2025-02-06 13:07:36,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 2068 transitions, 49192 flow, removed 111 selfloop flow, removed 8 redundant places. [2025-02-06 13:07:36,274 INFO L231 Difference]: Finished difference. Result has 647 places, 1777 transitions, 44365 flow [2025-02-06 13:07:36,275 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=32857, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=950, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=44365, PETRI_PLACES=647, PETRI_TRANSITIONS=1777} [2025-02-06 13:07:36,276 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 621 predicate places. [2025-02-06 13:07:36,276 INFO L471 AbstractCegarLoop]: Abstraction has has 647 places, 1777 transitions, 44365 flow [2025-02-06 13:07:36,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:07:36,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:36,276 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:36,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 13:07:36,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:36,477 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:36,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash -913134079, now seen corresponding path program 20 times [2025-02-06 13:07:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703756545] [2025-02-06 13:07:36,477 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:07:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:36,479 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:36,481 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:36,481 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:36,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:36,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703756545] [2025-02-06 13:07:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703756545] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491320478] [2025-02-06 13:07:36,678 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:07:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:36,680 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 13:07:36,709 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:36,721 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:36,721 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:07:36,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:36,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:07:36,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:37,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:07:37,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491320478] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:37,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:37,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:07:37,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736418394] [2025-02-06 13:07:37,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:37,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:07:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:37,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:07:37,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:07:37,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:37,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 1777 transitions, 44365 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:07:37,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:37,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:37,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:45,196 INFO L124 PetriNetUnfolderBase]: 5652/10366 cut-off events. [2025-02-06 13:07:45,196 INFO L125 PetriNetUnfolderBase]: For 741104/741104 co-relation queries the response was YES. [2025-02-06 13:07:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125926 conditions, 10366 events. 5652/10366 cut-off events. For 741104/741104 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 80128 event pairs, 161 based on Foata normal form. 13/10379 useless extension candidates. Maximal degree in co-relation 125755. Up to 2812 conditions per place. [2025-02-06 13:07:45,367 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 714 selfloop transitions, 1955 changer transitions 32/2702 dead transitions. [2025-02-06 13:07:45,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 2702 transitions, 70073 flow [2025-02-06 13:07:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2025-02-06 13:07:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2025-02-06 13:07:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 1308 transitions. [2025-02-06 13:07:45,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36824324324324326 [2025-02-06 13:07:45,373 INFO L175 Difference]: Start difference. First operand has 647 places, 1777 transitions, 44365 flow. Second operand 148 states and 1308 transitions. [2025-02-06 13:07:45,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 2702 transitions, 70073 flow [2025-02-06 13:07:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 775 places, 2702 transitions, 69508 flow, removed 70 selfloop flow, removed 16 redundant places. [2025-02-06 13:07:50,416 INFO L231 Difference]: Finished difference. Result has 811 places, 2327 transitions, 65318 flow [2025-02-06 13:07:50,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=43868, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1777, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=148, PETRI_FLOW=65318, PETRI_PLACES=811, PETRI_TRANSITIONS=2327} [2025-02-06 13:07:50,418 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 785 predicate places. [2025-02-06 13:07:50,418 INFO L471 AbstractCegarLoop]: Abstraction has has 811 places, 2327 transitions, 65318 flow [2025-02-06 13:07:50,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:07:50,418 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:07:50,418 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:07:50,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 13:07:50,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:50,623 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:07:50,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:07:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash 564972643, now seen corresponding path program 21 times [2025-02-06 13:07:50,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:07:50,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378954772] [2025-02-06 13:07:50,625 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:07:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:07:50,629 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:50,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:50,631 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:07:50,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:50,800 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 13:07:50,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:07:50,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378954772] [2025-02-06 13:07:50,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378954772] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:07:50,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073990401] [2025-02-06 13:07:50,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 13:07:50,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:07:50,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:07:50,803 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:07:50,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 13:07:50,829 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:07:50,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:07:50,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 13:07:50,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:07:50,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:07:50,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:07:51,017 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 13:07:51,017 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:07:51,218 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 13:07:51,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073990401] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:07:51,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:07:51,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:07:51,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15844703] [2025-02-06 13:07:51,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:07:51,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:07:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:07:51,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:07:51,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:07:51,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:07:51,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 2327 transitions, 65318 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:07:51,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:07:51,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:07:51,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:07:57,961 INFO L124 PetriNetUnfolderBase]: 5930/10797 cut-off events. [2025-02-06 13:07:57,962 INFO L125 PetriNetUnfolderBase]: For 975290/975290 co-relation queries the response was YES. [2025-02-06 13:07:58,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145003 conditions, 10797 events. 5930/10797 cut-off events. For 975290/975290 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 83483 event pairs, 309 based on Foata normal form. 3/10800 useless extension candidates. Maximal degree in co-relation 144787. Up to 6610 conditions per place. [2025-02-06 13:07:58,148 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 977 selfloop transitions, 1574 changer transitions 12/2564 dead transitions. [2025-02-06 13:07:58,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 2564 transitions, 75940 flow [2025-02-06 13:07:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-06 13:07:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2025-02-06 13:07:58,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 451 transitions. [2025-02-06 13:07:58,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35455974842767296 [2025-02-06 13:07:58,149 INFO L175 Difference]: Start difference. First operand has 811 places, 2327 transitions, 65318 flow. Second operand 53 states and 451 transitions. [2025-02-06 13:07:58,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 2564 transitions, 75940 flow [2025-02-06 13:08:06,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 2564 transitions, 73946 flow, removed 433 selfloop flow, removed 41 redundant places. [2025-02-06 13:08:06,309 INFO L231 Difference]: Finished difference. Result has 827 places, 2453 transitions, 71270 flow [2025-02-06 13:08:06,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=63491, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=71270, PETRI_PLACES=827, PETRI_TRANSITIONS=2453} [2025-02-06 13:08:06,315 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 801 predicate places. [2025-02-06 13:08:06,315 INFO L471 AbstractCegarLoop]: Abstraction has has 827 places, 2453 transitions, 71270 flow [2025-02-06 13:08:06,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:08:06,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:08:06,315 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:08:06,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 13:08:06,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 13:08:06,516 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:08:06,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:08:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1581198117, now seen corresponding path program 22 times [2025-02-06 13:08:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:08:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537633887] [2025-02-06 13:08:06,518 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:08:06,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:08:06,521 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:08:06,524 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:08:06,527 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:08:06,527 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:08:06,667 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 13:08:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:08:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537633887] [2025-02-06 13:08:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537633887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:08:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994633951] [2025-02-06 13:08:06,667 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 13:08:06,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:08:06,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:08:06,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:08:06,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 13:08:06,696 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:08:06,705 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:08:06,706 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 13:08:06,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:08:06,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:08:06,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:08:06,900 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 13:08:06,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:08:07,085 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 13:08:07,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994633951] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:08:07,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:08:07,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:08:07,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49103510] [2025-02-06 13:08:07,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:08:07,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:08:07,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:08:07,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:08:07,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:08:07,099 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:08:07,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 2453 transitions, 71270 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:08:07,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:08:07,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:08:07,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:08:15,192 INFO L124 PetriNetUnfolderBase]: 6144/11163 cut-off events. [2025-02-06 13:08:15,192 INFO L125 PetriNetUnfolderBase]: For 1008600/1008600 co-relation queries the response was YES. [2025-02-06 13:08:15,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152736 conditions, 11163 events. 6144/11163 cut-off events. For 1008600/1008600 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 86511 event pairs, 310 based on Foata normal form. 5/11168 useless extension candidates. Maximal degree in co-relation 152532. Up to 6283 conditions per place. [2025-02-06 13:08:15,414 INFO L140 encePairwiseOnDemand]: 12/24 looper letters, 846 selfloop transitions, 1818 changer transitions 14/2679 dead transitions. [2025-02-06 13:08:15,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 2679 transitions, 81755 flow [2025-02-06 13:08:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-06 13:08:15,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2025-02-06 13:08:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 498 transitions. [2025-02-06 13:08:15,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3516949152542373 [2025-02-06 13:08:15,420 INFO L175 Difference]: Start difference. First operand has 827 places, 2453 transitions, 71270 flow. Second operand 59 states and 498 transitions. [2025-02-06 13:08:15,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 2679 transitions, 81755 flow [2025-02-06 13:08:25,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 2679 transitions, 81467 flow, removed 24 selfloop flow, removed 18 redundant places. [2025-02-06 13:08:25,241 INFO L231 Difference]: Finished difference. Result has 874 places, 2578 transitions, 79567 flow [2025-02-06 13:08:25,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=70984, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=79567, PETRI_PLACES=874, PETRI_TRANSITIONS=2578} [2025-02-06 13:08:25,243 INFO L279 CegarLoopForPetriNet]: 26 programPoint places, 848 predicate places. [2025-02-06 13:08:25,245 INFO L471 AbstractCegarLoop]: Abstraction has has 874 places, 2578 transitions, 79567 flow [2025-02-06 13:08:25,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:08:25,245 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:08:25,245 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:08:25,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 13:08:25,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-06 13:08:25,446 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 13:08:25,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:08:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2142314373, now seen corresponding path program 23 times [2025-02-06 13:08:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:08:25,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423776892] [2025-02-06 13:08:25,447 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:08:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:08:25,450 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:08:25,452 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:08:25,453 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:08:25,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:08:25,583 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 13:08:25,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:08:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423776892] [2025-02-06 13:08:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423776892] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:08:25,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036179597] [2025-02-06 13:08:25,583 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 13:08:25,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:08:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:08:25,585 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:08:25,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 13:08:25,610 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-06 13:08:25,618 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 13:08:25,618 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:08:25,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:08:25,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 13:08:25,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:08:25,797 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 13:08:25,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:08:25,968 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 13:08:25,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036179597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:08:25,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:08:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2025-02-06 13:08:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346521441] [2025-02-06 13:08:25,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:08:25,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 13:08:25,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:08:25,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 13:08:25,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2025-02-06 13:08:25,973 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2025-02-06 13:08:25,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 2578 transitions, 79567 flow. Second operand has 31 states, 31 states have (on average 5.645161290322581) internal successors, (175), 31 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 13:08:25,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:08:25,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2025-02-06 13:08:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand