./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/triangular-longest-1.i --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/pthread/triangular-longest-1.i -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 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:35:10,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:35:10,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:35:10,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:35:10,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:35:10,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:35:10,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:35:10,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:35:10,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:35:10,270 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:35:10,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:35:10,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:35:10,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:35:10,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:35:10,271 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:35:10,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:35:10,272 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:35:10,273 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:35:10,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:35:10,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:35:10,273 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 -> 81809963fcaff21fd6241cde97e522447f695a8b323a0a16c5a31b7f82b0f683 [2025-02-06 12:35:10,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:35:10,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:35:10,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:35:10,511 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:35:10,511 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:35:10,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-06 12:35:11,725 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34068ff7a/16ff5f8d74ac491b94e6ed816a4175b3/FLAG0415c7295 [2025-02-06 12:35:12,134 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:35:12,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/triangular-longest-1.i [2025-02-06 12:35:12,168 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34068ff7a/16ff5f8d74ac491b94e6ed816a4175b3/FLAG0415c7295 [2025-02-06 12:35:12,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/34068ff7a/16ff5f8d74ac491b94e6ed816a4175b3 [2025-02-06 12:35:12,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:35:12,337 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:35:12,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:35:12,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:35:12,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:35:12,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,349 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac37ef6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12, skipping insertion in model container [2025-02-06 12:35:12,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:35:12,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:35:12,761 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:35:12,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:35:12,830 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:35:12,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12 WrapperNode [2025-02-06 12:35:12,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:35:12,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:35:12,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:35:12,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:35:12,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,859 INFO L138 Inliner]: procedures = 168, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2025-02-06 12:35:12,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:35:12,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:35:12,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:35:12,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:35:12,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,873 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 12:35:12,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,876 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:35:12,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:35:12,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:35:12,881 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:35:12,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (1/1) ... [2025-02-06 12:35:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:35:12,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:12,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:35:12,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 12:35:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 12:35:12,921 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 12:35:12,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:35:12,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:35:12,922 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:35:13,003 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:35:13,005 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:35:13,123 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:35:13,123 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:35:13,182 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:35:13,183 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:35:13,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:35:13 BoogieIcfgContainer [2025-02-06 12:35:13,183 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:35:13,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:35:13,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:35:13,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:35:13,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:35:12" (1/3) ... [2025-02-06 12:35:13,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fce2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:35:13, skipping insertion in model container [2025-02-06 12:35:13,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:35:12" (2/3) ... [2025-02-06 12:35:13,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fce2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:35:13, skipping insertion in model container [2025-02-06 12:35:13,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:35:13" (3/3) ... [2025-02-06 12:35:13,189 INFO L128 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2025-02-06 12:35:13,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:35:13,200 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG triangular-longest-1.i that has 3 procedures, 26 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 12:35:13,200 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:35:13,234 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 12:35:13,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2025-02-06 12:35:13,277 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-06 12:35:13,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:13,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-02-06 12:35:13,282 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2025-02-06 12:35:13,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2025-02-06 12:35:13,289 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:35:13,299 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;@6daeeb74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:35:13,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 12:35:13,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:35:13,306 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2025-02-06 12:35:13,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:13,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:13,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:13,308 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:13,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:13,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979287, now seen corresponding path program 1 times [2025-02-06 12:35:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936886358] [2025-02-06 12:35:13,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:13,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:13,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:35:13,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:35:13,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:13,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:13,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:13,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936886358] [2025-02-06 12:35:13,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936886358] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:13,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:13,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 12:35:13,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193550135] [2025-02-06 12:35:13,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:13,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:35:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:13,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:35:13,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:35:13,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:13,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:13,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:13,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:13,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:13,623 INFO L124 PetriNetUnfolderBase]: 185/363 cut-off events. [2025-02-06 12:35:13,623 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:35:13,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 363 events. 185/363 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1602 event pairs, 135 based on Foata normal form. 32/390 useless extension candidates. Maximal degree in co-relation 657. Up to 290 conditions per place. [2025-02-06 12:35:13,627 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 15 selfloop transitions, 1 changer transitions 1/23 dead transitions. [2025-02-06 12:35:13,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 86 flow [2025-02-06 12:35:13,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:35:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:35:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2025-02-06 12:35:13,634 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5057471264367817 [2025-02-06 12:35:13,635 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 60 flow. Second operand 3 states and 44 transitions. [2025-02-06 12:35:13,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 86 flow [2025-02-06 12:35:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 12:35:13,639 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 50 flow [2025-02-06 12:35:13,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2025-02-06 12:35:13,643 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2025-02-06 12:35:13,643 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 50 flow [2025-02-06 12:35:13,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:13,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:13,643 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:13,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:35:13,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1499979786, now seen corresponding path program 1 times [2025-02-06 12:35:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:13,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945867645] [2025-02-06 12:35:13,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:13,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:13,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 12:35:13,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 12:35:13,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:13,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:13,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:13,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945867645] [2025-02-06 12:35:13,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945867645] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:13,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:13,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 12:35:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145767840] [2025-02-06 12:35:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:13,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 12:35:13,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:13,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 12:35:13,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 12:35:13,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:13,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:13,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:13,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:13,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:13,974 INFO L124 PetriNetUnfolderBase]: 273/491 cut-off events. [2025-02-06 12:35:13,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:35:13,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 491 events. 273/491 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2024 event pairs, 45 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 925. Up to 181 conditions per place. [2025-02-06 12:35:13,978 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 4 changer transitions 21/54 dead transitions. [2025-02-06 12:35:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 54 transitions, 212 flow [2025-02-06 12:35:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 12:35:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 12:35:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2025-02-06 12:35:13,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2025-02-06 12:35:13,980 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 50 flow. Second operand 6 states and 99 transitions. [2025-02-06 12:35:13,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 54 transitions, 212 flow [2025-02-06 12:35:13,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 54 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:35:13,981 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 74 flow [2025-02-06 12:35:13,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2025-02-06 12:35:13,982 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2025-02-06 12:35:13,982 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 74 flow [2025-02-06 12:35:13,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:13,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:13,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:13,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 12:35:13,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:13,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1591607260, now seen corresponding path program 1 times [2025-02-06 12:35:13,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275317031] [2025-02-06 12:35:13,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:13,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:35:14,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:35:14,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:14,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:14,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:14,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275317031] [2025-02-06 12:35:14,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275317031] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:14,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:14,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:35:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76353437] [2025-02-06 12:35:14,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:14,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:35:14,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:14,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:35:14,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:35:14,113 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:14,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:14,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:14,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:14,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:14,323 INFO L124 PetriNetUnfolderBase]: 382/707 cut-off events. [2025-02-06 12:35:14,323 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2025-02-06 12:35:14,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 707 events. 382/707 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3107 event pairs, 65 based on Foata normal form. 33/739 useless extension candidates. Maximal degree in co-relation 1594. Up to 246 conditions per place. [2025-02-06 12:35:14,327 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 9 changer transitions 20/79 dead transitions. [2025-02-06 12:35:14,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 79 transitions, 382 flow [2025-02-06 12:35:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 12:35:14,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-06 12:35:14,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2025-02-06 12:35:14,329 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2025-02-06 12:35:14,329 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 74 flow. Second operand 9 states and 144 transitions. [2025-02-06 12:35:14,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 79 transitions, 382 flow [2025-02-06 12:35:14,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 79 transitions, 366 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-02-06 12:35:14,331 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 159 flow [2025-02-06 12:35:14,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=159, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2025-02-06 12:35:14,332 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2025-02-06 12:35:14,332 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 159 flow [2025-02-06 12:35:14,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:14,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:14,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:14,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 12:35:14,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:14,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1595175136, now seen corresponding path program 2 times [2025-02-06 12:35:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:14,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827193776] [2025-02-06 12:35:14,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:14,342 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 1 equivalence classes. [2025-02-06 12:35:14,350 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 12:35:14,350 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 12:35:14,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:14,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:14,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827193776] [2025-02-06 12:35:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827193776] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 12:35:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263725154] [2025-02-06 12:35:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:14,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 12:35:14,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:14,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 12:35:14,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 12:35:14,432 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:14,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:14,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:14,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:14,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:14,670 INFO L124 PetriNetUnfolderBase]: 328/614 cut-off events. [2025-02-06 12:35:14,670 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2025-02-06 12:35:14,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 614 events. 328/614 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2617 event pairs, 65 based on Foata normal form. 57/670 useless extension candidates. Maximal degree in co-relation 1726. Up to 234 conditions per place. [2025-02-06 12:35:14,674 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 38 selfloop transitions, 9 changer transitions 28/79 dead transitions. [2025-02-06 12:35:14,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 499 flow [2025-02-06 12:35:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 12:35:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 12:35:14,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2025-02-06 12:35:14,678 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474137931034483 [2025-02-06 12:35:14,678 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 159 flow. Second operand 8 states and 127 transitions. [2025-02-06 12:35:14,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 499 flow [2025-02-06 12:35:14,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 79 transitions, 491 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-02-06 12:35:14,681 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 213 flow [2025-02-06 12:35:14,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2025-02-06 12:35:14,683 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2025-02-06 12:35:14,683 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 213 flow [2025-02-06 12:35:14,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:14,683 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:14,683 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:14,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 12:35:14,683 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:14,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash 29952673, now seen corresponding path program 1 times [2025-02-06 12:35:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576793554] [2025-02-06 12:35:14,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:14,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:14,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:35:14,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:35:14,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:14,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:14,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:14,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576793554] [2025-02-06 12:35:14,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576793554] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:14,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:14,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:35:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981538439] [2025-02-06 12:35:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:14,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:35:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:14,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:35:14,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:35:14,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:14,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 213 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:14,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:14,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:14,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:15,157 INFO L124 PetriNetUnfolderBase]: 337/626 cut-off events. [2025-02-06 12:35:15,157 INFO L125 PetriNetUnfolderBase]: For 1712/1724 co-relation queries the response was YES. [2025-02-06 12:35:15,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1952 conditions, 626 events. 337/626 cut-off events. For 1712/1724 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2657 event pairs, 68 based on Foata normal form. 30/655 useless extension candidates. Maximal degree in co-relation 1929. Up to 237 conditions per place. [2025-02-06 12:35:15,161 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 46 selfloop transitions, 16 changer transitions 24/90 dead transitions. [2025-02-06 12:35:15,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 90 transitions, 610 flow [2025-02-06 12:35:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 12:35:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 12:35:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-06 12:35:15,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-06 12:35:15,164 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 213 flow. Second operand 11 states and 168 transitions. [2025-02-06 12:35:15,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 90 transitions, 610 flow [2025-02-06 12:35:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 543 flow, removed 24 selfloop flow, removed 7 redundant places. [2025-02-06 12:35:15,169 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 282 flow [2025-02-06 12:35:15,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2025-02-06 12:35:15,171 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2025-02-06 12:35:15,171 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 282 flow [2025-02-06 12:35:15,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:15,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:15,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 12:35:15,172 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1774460803, now seen corresponding path program 2 times [2025-02-06 12:35:15,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:15,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746869447] [2025-02-06 12:35:15,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:15,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:15,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:35:15,183 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:35:15,184 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 12:35:15,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:15,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:15,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746869447] [2025-02-06 12:35:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746869447] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:15,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:15,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:35:15,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281849870] [2025-02-06 12:35:15,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:15,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:35:15,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:15,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:35:15,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:35:15,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:15,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:15,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:15,468 INFO L124 PetriNetUnfolderBase]: 508/938 cut-off events. [2025-02-06 12:35:15,468 INFO L125 PetriNetUnfolderBase]: For 3237/3255 co-relation queries the response was YES. [2025-02-06 12:35:15,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3083 conditions, 938 events. 508/938 cut-off events. For 3237/3255 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4321 event pairs, 53 based on Foata normal form. 45/980 useless extension candidates. Maximal degree in co-relation 3059. Up to 253 conditions per place. [2025-02-06 12:35:15,473 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 57 selfloop transitions, 20 changer transitions 23/104 dead transitions. [2025-02-06 12:35:15,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 774 flow [2025-02-06 12:35:15,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 12:35:15,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 12:35:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2025-02-06 12:35:15,478 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2025-02-06 12:35:15,478 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 282 flow. Second operand 11 states and 174 transitions. [2025-02-06 12:35:15,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 774 flow [2025-02-06 12:35:15,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 708 flow, removed 27 selfloop flow, removed 4 redundant places. [2025-02-06 12:35:15,484 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 379 flow [2025-02-06 12:35:15,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=379, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2025-02-06 12:35:15,485 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2025-02-06 12:35:15,485 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 379 flow [2025-02-06 12:35:15,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:15,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:15,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 12:35:15,486 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:15,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1950453345, now seen corresponding path program 3 times [2025-02-06 12:35:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:15,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176097807] [2025-02-06 12:35:15,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:35:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:15,491 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 1 equivalence classes. [2025-02-06 12:35:15,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 12:35:15,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 12:35:15,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:15,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:15,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176097807] [2025-02-06 12:35:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176097807] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:15,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 12:35:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818734713] [2025-02-06 12:35:15,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:15,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 12:35:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:15,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 12:35:15,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 12:35:15,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:15,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 379 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:15,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:15,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:15,808 INFO L124 PetriNetUnfolderBase]: 445/836 cut-off events. [2025-02-06 12:35:15,809 INFO L125 PetriNetUnfolderBase]: For 4864/4882 co-relation queries the response was YES. [2025-02-06 12:35:15,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3163 conditions, 836 events. 445/836 cut-off events. For 4864/4882 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3772 event pairs, 71 based on Foata normal form. 63/896 useless extension candidates. Maximal degree in co-relation 3134. Up to 223 conditions per place. [2025-02-06 12:35:15,812 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 44 selfloop transitions, 20 changer transitions 31/99 dead transitions. [2025-02-06 12:35:15,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 899 flow [2025-02-06 12:35:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:35:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 12:35:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-02-06 12:35:15,814 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-06 12:35:15,814 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 379 flow. Second operand 10 states and 155 transitions. [2025-02-06 12:35:15,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 899 flow [2025-02-06 12:35:15,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 830 flow, removed 25 selfloop flow, removed 5 redundant places. [2025-02-06 12:35:15,823 INFO L231 Difference]: Finished difference. Result has 73 places, 47 transitions, 427 flow [2025-02-06 12:35:15,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2025-02-06 12:35:15,825 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2025-02-06 12:35:15,825 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 427 flow [2025-02-06 12:35:15,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,825 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:15,826 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:15,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 12:35:15,826 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:15,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:15,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1345523814, now seen corresponding path program 1 times [2025-02-06 12:35:15,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:15,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687233956] [2025-02-06 12:35:15,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:15,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:15,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:35:15,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:35:15,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:15,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687233956] [2025-02-06 12:35:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687233956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:15,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:15,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 12:35:15,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065997135] [2025-02-06 12:35:15,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:15,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:35:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:15,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:35:15,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:35:15,931 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:15,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:15,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:15,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:15,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:16,168 INFO L124 PetriNetUnfolderBase]: 454/845 cut-off events. [2025-02-06 12:35:16,168 INFO L125 PetriNetUnfolderBase]: For 5578/5596 co-relation queries the response was YES. [2025-02-06 12:35:16,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 845 events. 454/845 cut-off events. For 5578/5596 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3810 event pairs, 59 based on Foata normal form. 36/878 useless extension candidates. Maximal degree in co-relation 3284. Up to 157 conditions per place. [2025-02-06 12:35:16,173 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 45 selfloop transitions, 26 changer transitions 23/98 dead transitions. [2025-02-06 12:35:16,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 921 flow [2025-02-06 12:35:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 12:35:16,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 12:35:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2025-02-06 12:35:16,176 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5344827586206896 [2025-02-06 12:35:16,176 INFO L175 Difference]: Start difference. First operand has 73 places, 47 transitions, 427 flow. Second operand 10 states and 155 transitions. [2025-02-06 12:35:16,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 921 flow [2025-02-06 12:35:16,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 98 transitions, 839 flow, removed 25 selfloop flow, removed 8 redundant places. [2025-02-06 12:35:16,189 INFO L231 Difference]: Finished difference. Result has 75 places, 50 transitions, 501 flow [2025-02-06 12:35:16,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=501, PETRI_PLACES=75, PETRI_TRANSITIONS=50} [2025-02-06 12:35:16,190 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2025-02-06 12:35:16,191 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 50 transitions, 501 flow [2025-02-06 12:35:16,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:16,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:16,191 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:16,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 12:35:16,192 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:16,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1611396395, now seen corresponding path program 1 times [2025-02-06 12:35:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112862828] [2025-02-06 12:35:16,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:16,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:16,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:35:16,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:35:16,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:16,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:16,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:16,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112862828] [2025-02-06 12:35:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112862828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:16,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 12:35:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430027440] [2025-02-06 12:35:16,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:16,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:35:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:16,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:35:16,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:35:16,500 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:16,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 50 transitions, 501 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:16,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:16,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:16,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:16,705 INFO L124 PetriNetUnfolderBase]: 490/917 cut-off events. [2025-02-06 12:35:16,705 INFO L125 PetriNetUnfolderBase]: For 7027/7045 co-relation queries the response was YES. [2025-02-06 12:35:16,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3767 conditions, 917 events. 490/917 cut-off events. For 7027/7045 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4218 event pairs, 161 based on Foata normal form. 45/961 useless extension candidates. Maximal degree in co-relation 3734. Up to 540 conditions per place. [2025-02-06 12:35:16,711 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 56 selfloop transitions, 13 changer transitions 31/104 dead transitions. [2025-02-06 12:35:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 1047 flow [2025-02-06 12:35:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 12:35:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-02-06 12:35:16,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2025-02-06 12:35:16,712 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5266457680250783 [2025-02-06 12:35:16,712 INFO L175 Difference]: Start difference. First operand has 75 places, 50 transitions, 501 flow. Second operand 11 states and 168 transitions. [2025-02-06 12:35:16,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 1047 flow [2025-02-06 12:35:16,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 104 transitions, 969 flow, removed 22 selfloop flow, removed 7 redundant places. [2025-02-06 12:35:16,722 INFO L231 Difference]: Finished difference. Result has 81 places, 52 transitions, 519 flow [2025-02-06 12:35:16,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=519, PETRI_PLACES=81, PETRI_TRANSITIONS=52} [2025-02-06 12:35:16,723 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2025-02-06 12:35:16,723 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 52 transitions, 519 flow [2025-02-06 12:35:16,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:16,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:16,724 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:16,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 12:35:16,724 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:16,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -833258891, now seen corresponding path program 2 times [2025-02-06 12:35:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643377294] [2025-02-06 12:35:16,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:16,728 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:35:16,730 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:35:16,730 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 12:35:16,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:16,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:16,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:16,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643377294] [2025-02-06 12:35:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643377294] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:16,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 12:35:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108897277] [2025-02-06 12:35:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:16,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:35:16,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:16,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:35:16,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:35:16,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 52 transitions, 519 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:16,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:16,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:17,131 INFO L124 PetriNetUnfolderBase]: 643/1211 cut-off events. [2025-02-06 12:35:17,131 INFO L125 PetriNetUnfolderBase]: For 12283/12301 co-relation queries the response was YES. [2025-02-06 12:35:17,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5363 conditions, 1211 events. 643/1211 cut-off events. For 12283/12301 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5898 event pairs, 134 based on Foata normal form. 45/1255 useless extension candidates. Maximal degree in co-relation 5327. Up to 465 conditions per place. [2025-02-06 12:35:17,138 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 76 selfloop transitions, 23 changer transitions 31/134 dead transitions. [2025-02-06 12:35:17,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 134 transitions, 1387 flow [2025-02-06 12:35:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 12:35:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-02-06 12:35:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2025-02-06 12:35:17,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2025-02-06 12:35:17,140 INFO L175 Difference]: Start difference. First operand has 81 places, 52 transitions, 519 flow. Second operand 15 states and 232 transitions. [2025-02-06 12:35:17,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 134 transitions, 1387 flow [2025-02-06 12:35:17,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 1219 flow, removed 73 selfloop flow, removed 8 redundant places. [2025-02-06 12:35:17,191 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 635 flow [2025-02-06 12:35:17,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=635, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2025-02-06 12:35:17,192 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2025-02-06 12:35:17,192 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 635 flow [2025-02-06 12:35:17,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:17,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:17,193 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:17,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 12:35:17,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:17,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:17,194 INFO L85 PathProgramCache]: Analyzing trace with hash -836826767, now seen corresponding path program 3 times [2025-02-06 12:35:17,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:17,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586931754] [2025-02-06 12:35:17,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:35:17,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:17,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 1 equivalence classes. [2025-02-06 12:35:17,202 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 12:35:17,203 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 12:35:17,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:17,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:17,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586931754] [2025-02-06 12:35:17,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586931754] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:35:17,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:35:17,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 12:35:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291771623] [2025-02-06 12:35:17,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:35:17,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 12:35:17,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:17,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 12:35:17,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 12:35:17,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:17,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 635 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:17,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:17,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:17,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:17,806 INFO L124 PetriNetUnfolderBase]: 580/1094 cut-off events. [2025-02-06 12:35:17,806 INFO L125 PetriNetUnfolderBase]: For 12793/12811 co-relation queries the response was YES. [2025-02-06 12:35:17,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 1094 events. 580/1094 cut-off events. For 12793/12811 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5248 event pairs, 140 based on Foata normal form. 63/1156 useless extension candidates. Maximal degree in co-relation 4976. Up to 435 conditions per place. [2025-02-06 12:35:17,813 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 64 selfloop transitions, 24 changer transitions 39/131 dead transitions. [2025-02-06 12:35:17,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 131 transitions, 1443 flow [2025-02-06 12:35:17,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 12:35:17,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-06 12:35:17,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2025-02-06 12:35:17,816 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295566502463054 [2025-02-06 12:35:17,816 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 635 flow. Second operand 14 states and 215 transitions. [2025-02-06 12:35:17,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 131 transitions, 1443 flow [2025-02-06 12:35:17,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1275 flow, removed 68 selfloop flow, removed 10 redundant places. [2025-02-06 12:35:17,841 INFO L231 Difference]: Finished difference. Result has 96 places, 59 transitions, 638 flow [2025-02-06 12:35:17,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=638, PETRI_PLACES=96, PETRI_TRANSITIONS=59} [2025-02-06 12:35:17,841 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2025-02-06 12:35:17,841 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 59 transitions, 638 flow [2025-02-06 12:35:17,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:17,841 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:17,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:17,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 12:35:17,842 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:17,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:17,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1779029952, now seen corresponding path program 1 times [2025-02-06 12:35:17,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:17,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348905306] [2025-02-06 12:35:17,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:17,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 12:35:17,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 12:35:17,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:17,970 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:18,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:18,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348905306] [2025-02-06 12:35:18,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348905306] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:18,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135012782] [2025-02-06 12:35:18,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:35:18,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:18,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:18,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:35:18,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 12:35:18,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 12:35:18,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 12:35:18,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:18,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:18,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 12:35:18,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:18,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:18,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135012782] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:18,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:18,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-06 12:35:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903890271] [2025-02-06 12:35:18,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:18,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 12:35:18,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:18,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 12:35:18,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-02-06 12:35:18,590 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:18,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 59 transitions, 638 flow. Second operand has 15 states, 15 states have (on average 10.133333333333333) internal successors, (152), 15 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:18,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:18,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:18,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:19,406 INFO L124 PetriNetUnfolderBase]: 877/1649 cut-off events. [2025-02-06 12:35:19,411 INFO L125 PetriNetUnfolderBase]: For 24500/24518 co-relation queries the response was YES. [2025-02-06 12:35:19,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8250 conditions, 1649 events. 877/1649 cut-off events. For 24500/24518 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 8074 event pairs, 65 based on Foata normal form. 81/1727 useless extension candidates. Maximal degree in co-relation 8208. Up to 312 conditions per place. [2025-02-06 12:35:19,437 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 91 selfloop transitions, 46 changer transitions 67/208 dead transitions. [2025-02-06 12:35:19,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 208 transitions, 2376 flow [2025-02-06 12:35:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 12:35:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2025-02-06 12:35:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 384 transitions. [2025-02-06 12:35:19,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5296551724137931 [2025-02-06 12:35:19,453 INFO L175 Difference]: Start difference. First operand has 96 places, 59 transitions, 638 flow. Second operand 25 states and 384 transitions. [2025-02-06 12:35:19,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 208 transitions, 2376 flow [2025-02-06 12:35:19,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 208 transitions, 2192 flow, removed 72 selfloop flow, removed 12 redundant places. [2025-02-06 12:35:19,560 INFO L231 Difference]: Finished difference. Result has 120 places, 69 transitions, 965 flow [2025-02-06 12:35:19,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=965, PETRI_PLACES=120, PETRI_TRANSITIONS=69} [2025-02-06 12:35:19,561 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2025-02-06 12:35:19,562 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 69 transitions, 965 flow [2025-02-06 12:35:19,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.133333333333333) internal successors, (152), 15 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:19,562 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:19,562 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:19,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 12:35:19,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 12:35:19,769 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:19,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash -230915460, now seen corresponding path program 2 times [2025-02-06 12:35:19,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:19,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294606613] [2025-02-06 12:35:19,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:19,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 12:35:19,839 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 12:35:19,839 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:35:19,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:19,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294606613] [2025-02-06 12:35:19,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294606613] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:19,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126719574] [2025-02-06 12:35:19,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:19,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:19,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:19,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:35:19,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 12:35:20,039 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 12:35:20,066 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 12:35:20,066 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:35:20,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:20,067 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 12:35:20,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:20,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:20,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126719574] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:20,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:20,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-02-06 12:35:20,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855424614] [2025-02-06 12:35:20,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:20,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 12:35:20,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:20,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 12:35:20,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-02-06 12:35:20,252 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:20,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 69 transitions, 965 flow. Second operand has 15 states, 15 states have (on average 10.133333333333333) internal successors, (152), 15 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:20,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:20,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:20,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:20,884 INFO L124 PetriNetUnfolderBase]: 1021/1931 cut-off events. [2025-02-06 12:35:20,884 INFO L125 PetriNetUnfolderBase]: For 63293/63311 co-relation queries the response was YES. [2025-02-06 12:35:20,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12119 conditions, 1931 events. 1021/1931 cut-off events. For 63293/63311 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9609 event pairs, 38 based on Foata normal form. 126/2056 useless extension candidates. Maximal degree in co-relation 12065. Up to 390 conditions per place. [2025-02-06 12:35:20,895 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 91 selfloop transitions, 63 changer transitions 98/256 dead transitions. [2025-02-06 12:35:20,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 256 transitions, 3882 flow [2025-02-06 12:35:20,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-02-06 12:35:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2025-02-06 12:35:20,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 459 transitions. [2025-02-06 12:35:20,897 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2025-02-06 12:35:20,897 INFO L175 Difference]: Start difference. First operand has 120 places, 69 transitions, 965 flow. Second operand 30 states and 459 transitions. [2025-02-06 12:35:20,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 256 transitions, 3882 flow [2025-02-06 12:35:20,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 256 transitions, 3122 flow, removed 346 selfloop flow, removed 19 redundant places. [2025-02-06 12:35:20,937 INFO L231 Difference]: Finished difference. Result has 142 places, 87 transitions, 1383 flow [2025-02-06 12:35:20,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1383, PETRI_PLACES=142, PETRI_TRANSITIONS=87} [2025-02-06 12:35:20,937 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2025-02-06 12:35:20,937 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 87 transitions, 1383 flow [2025-02-06 12:35:20,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.133333333333333) internal successors, (152), 15 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:20,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:20,938 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:20,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 12:35:21,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:21,139 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:21,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:21,139 INFO L85 PathProgramCache]: Analyzing trace with hash 2049794340, now seen corresponding path program 3 times [2025-02-06 12:35:21,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:21,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742639113] [2025-02-06 12:35:21,139 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:35:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:21,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-02-06 12:35:21,149 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 12:35:21,149 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 12:35:21,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:21,274 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:21,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742639113] [2025-02-06 12:35:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742639113] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689366904] [2025-02-06 12:35:21,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:35:21,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:21,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:21,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:35:21,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 12:35:21,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 4 equivalence classes. [2025-02-06 12:35:21,321 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 12:35:21,321 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 12:35:21,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:21,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 12:35:21,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:21,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:21,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689366904] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:21,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:21,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-02-06 12:35:21,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400119997] [2025-02-06 12:35:21,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:21,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 12:35:21,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:21,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 12:35:21,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2025-02-06 12:35:21,554 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:21,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 87 transitions, 1383 flow. Second operand has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:21,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:22,773 INFO L124 PetriNetUnfolderBase]: 1669/3072 cut-off events. [2025-02-06 12:35:22,773 INFO L125 PetriNetUnfolderBase]: For 142770/142776 co-relation queries the response was YES. [2025-02-06 12:35:22,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22092 conditions, 3072 events. 1669/3072 cut-off events. For 142770/142776 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15153 event pairs, 42 based on Foata normal form. 96/3167 useless extension candidates. Maximal degree in co-relation 22029. Up to 648 conditions per place. [2025-02-06 12:35:22,794 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 141 selfloop transitions, 109 changer transitions 135/389 dead transitions. [2025-02-06 12:35:22,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 389 transitions, 6740 flow [2025-02-06 12:35:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-06 12:35:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2025-02-06 12:35:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 703 transitions. [2025-02-06 12:35:22,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5269865067466267 [2025-02-06 12:35:22,796 INFO L175 Difference]: Start difference. First operand has 142 places, 87 transitions, 1383 flow. Second operand 46 states and 703 transitions. [2025-02-06 12:35:22,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 389 transitions, 6740 flow [2025-02-06 12:35:22,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 389 transitions, 5582 flow, removed 542 selfloop flow, removed 21 redundant places. [2025-02-06 12:35:22,937 INFO L231 Difference]: Finished difference. Result has 186 places, 133 transitions, 2467 flow [2025-02-06 12:35:22,937 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=2467, PETRI_PLACES=186, PETRI_TRANSITIONS=133} [2025-02-06 12:35:22,938 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2025-02-06 12:35:22,938 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 133 transitions, 2467 flow [2025-02-06 12:35:22,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.0) internal successors, (250), 25 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:22,938 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:22,938 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:22,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 12:35:23,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:23,139 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:23,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash -280336807, now seen corresponding path program 4 times [2025-02-06 12:35:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284923208] [2025-02-06 12:35:23,140 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:35:23,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:23,144 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-06 12:35:23,148 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:23,148 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:35:23,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:23,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:23,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284923208] [2025-02-06 12:35:23,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284923208] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:23,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103398640] [2025-02-06 12:35:23,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:35:23,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:23,398 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:35:23,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 12:35:23,463 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-06 12:35:23,480 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:23,480 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:35:23,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:23,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 12:35:23,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:23,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103398640] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:23,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:23,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2025-02-06 12:35:23,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918907667] [2025-02-06 12:35:23,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:23,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 12:35:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:23,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 12:35:23,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 12:35:23,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:23,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 133 transitions, 2467 flow. Second operand has 35 states, 35 states have (on average 10.028571428571428) internal successors, (351), 35 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:23,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:23,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:23,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:25,760 INFO L124 PetriNetUnfolderBase]: 2191/4209 cut-off events. [2025-02-06 12:35:25,761 INFO L125 PetriNetUnfolderBase]: For 387070/387076 co-relation queries the response was YES. [2025-02-06 12:35:25,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38074 conditions, 4209 events. 2191/4209 cut-off events. For 387070/387076 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21794 event pairs, 403 based on Foata normal form. 159/4365 useless extension candidates. Maximal degree in co-relation 37995. Up to 1447 conditions per place. [2025-02-06 12:35:25,794 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 187 selfloop transitions, 100 changer transitions 189/480 dead transitions. [2025-02-06 12:35:25,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 480 transitions, 11368 flow [2025-02-06 12:35:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-06 12:35:25,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2025-02-06 12:35:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 818 transitions. [2025-02-06 12:35:25,796 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5128526645768025 [2025-02-06 12:35:25,796 INFO L175 Difference]: Start difference. First operand has 186 places, 133 transitions, 2467 flow. Second operand 55 states and 818 transitions. [2025-02-06 12:35:25,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 480 transitions, 11368 flow [2025-02-06 12:35:26,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 480 transitions, 9135 flow, removed 1093 selfloop flow, removed 21 redundant places. [2025-02-06 12:35:26,144 INFO L231 Difference]: Finished difference. Result has 242 places, 177 transitions, 3503 flow [2025-02-06 12:35:26,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=3503, PETRI_PLACES=242, PETRI_TRANSITIONS=177} [2025-02-06 12:35:26,145 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2025-02-06 12:35:26,145 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 177 transitions, 3503 flow [2025-02-06 12:35:26,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.028571428571428) internal successors, (351), 35 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:26,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:26,145 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:26,151 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 12:35:26,349 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,SelfDestructingSolverStorable14 [2025-02-06 12:35:26,349 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:26,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -905275549, now seen corresponding path program 5 times [2025-02-06 12:35:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134809736] [2025-02-06 12:35:26,350 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 12:35:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:26,358 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 6 equivalence classes. [2025-02-06 12:35:26,366 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:26,369 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 12:35:26,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:26,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134809736] [2025-02-06 12:35:26,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134809736] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:26,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532482226] [2025-02-06 12:35:26,650 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 12:35:26,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:26,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:26,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 12:35:26,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 12:35:26,680 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 6 equivalence classes. [2025-02-06 12:35:26,693 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:26,693 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 12:35:26,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:26,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 12:35:26,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:26,812 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:26,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532482226] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:27,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 35 [2025-02-06 12:35:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451314267] [2025-02-06 12:35:27,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:27,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 12:35:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:27,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 12:35:27,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1036, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 12:35:27,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:27,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 177 transitions, 3503 flow. Second operand has 36 states, 36 states have (on average 10.083333333333334) internal successors, (363), 36 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:27,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:27,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:27,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:29,607 INFO L124 PetriNetUnfolderBase]: 2740/5462 cut-off events. [2025-02-06 12:35:29,607 INFO L125 PetriNetUnfolderBase]: For 865573/865579 co-relation queries the response was YES. [2025-02-06 12:35:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57397 conditions, 5462 events. 2740/5462 cut-off events. For 865573/865579 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 30837 event pairs, 194 based on Foata normal form. 159/5620 useless extension candidates. Maximal degree in co-relation 57297. Up to 1308 conditions per place. [2025-02-06 12:35:29,657 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 179 selfloop transitions, 190 changer transitions 201/574 dead transitions. [2025-02-06 12:35:29,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 574 transitions, 15293 flow [2025-02-06 12:35:29,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 12:35:29,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2025-02-06 12:35:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 913 transitions. [2025-02-06 12:35:29,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161107970604861 [2025-02-06 12:35:29,660 INFO L175 Difference]: Start difference. First operand has 242 places, 177 transitions, 3503 flow. Second operand 61 states and 913 transitions. [2025-02-06 12:35:29,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 574 transitions, 15293 flow [2025-02-06 12:35:30,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 574 transitions, 12806 flow, removed 1210 selfloop flow, removed 29 redundant places. [2025-02-06 12:35:30,389 INFO L231 Difference]: Finished difference. Result has 292 places, 238 transitions, 5297 flow [2025-02-06 12:35:30,389 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2636, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=5297, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2025-02-06 12:35:30,390 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2025-02-06 12:35:30,390 INFO L471 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 5297 flow [2025-02-06 12:35:30,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.083333333333334) internal successors, (363), 36 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:30,390 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:30,390 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:30,396 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 12:35:30,591 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,SelfDestructingSolverStorable15 [2025-02-06 12:35:30,591 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:30,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1561587135, now seen corresponding path program 6 times [2025-02-06 12:35:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814332139] [2025-02-06 12:35:30,592 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:35:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:30,597 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 52 statements into 7 equivalence classes. [2025-02-06 12:35:30,611 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:30,611 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 12:35:30,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:30,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814332139] [2025-02-06 12:35:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814332139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287009110] [2025-02-06 12:35:30,806 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 12:35:30,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:30,808 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 12:35:30,810 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 12:35:30,841 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 52 statements into 7 equivalence classes. [2025-02-06 12:35:30,855 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 12:35:30,855 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-06 12:35:30,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:30,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 12:35:30,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:30,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287009110] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:31,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:31,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 34 [2025-02-06 12:35:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939989015] [2025-02-06 12:35:31,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:31,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 12:35:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:31,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 12:35:31,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=971, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 12:35:31,193 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:31,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 5297 flow. Second operand has 35 states, 35 states have (on average 10.057142857142857) internal successors, (352), 35 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:31,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:31,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:31,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:34,123 INFO L124 PetriNetUnfolderBase]: 3667/7255 cut-off events. [2025-02-06 12:35:34,123 INFO L125 PetriNetUnfolderBase]: For 1744516/1744522 co-relation queries the response was YES. [2025-02-06 12:35:34,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90390 conditions, 7255 events. 3667/7255 cut-off events. For 1744516/1744522 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 42335 event pairs, 83 based on Foata normal form. 159/7411 useless extension candidates. Maximal degree in co-relation 90270. Up to 1746 conditions per place. [2025-02-06 12:35:34,210 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 225 selfloop transitions, 271 changer transitions 205/705 dead transitions. [2025-02-06 12:35:34,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 705 transitions, 22089 flow [2025-02-06 12:35:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-02-06 12:35:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2025-02-06 12:35:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 1081 transitions. [2025-02-06 12:35:34,213 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5250121418164158 [2025-02-06 12:35:34,213 INFO L175 Difference]: Start difference. First operand has 292 places, 238 transitions, 5297 flow. Second operand 71 states and 1081 transitions. [2025-02-06 12:35:34,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 705 transitions, 22089 flow [2025-02-06 12:35:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 705 transitions, 18302 flow, removed 1848 selfloop flow, removed 31 redundant places. [2025-02-06 12:35:35,566 INFO L231 Difference]: Finished difference. Result has 356 places, 299 transitions, 7612 flow [2025-02-06 12:35:35,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=3894, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=7612, PETRI_PLACES=356, PETRI_TRANSITIONS=299} [2025-02-06 12:35:35,567 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2025-02-06 12:35:35,567 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 299 transitions, 7612 flow [2025-02-06 12:35:35,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.057142857142857) internal successors, (352), 35 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:35,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:35,567 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:35,574 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 12:35:35,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 12:35:35,768 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1035992735, now seen corresponding path program 7 times [2025-02-06 12:35:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914403388] [2025-02-06 12:35:35,769 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 12:35:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:35,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:35:35,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:35:35,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:35,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:36,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914403388] [2025-02-06 12:35:36,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914403388] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:36,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508693023] [2025-02-06 12:35:36,090 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 12:35:36,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:36,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:36,093 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 12:35:36,095 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 12:35:36,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 12:35:36,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 12:35:36,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:35:36,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:36,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 12:35:36,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:36,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:35:36,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508693023] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:36,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:36,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 44 [2025-02-06 12:35:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346708270] [2025-02-06 12:35:36,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:36,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 12:35:36,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:36,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 12:35:36,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1519, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 12:35:36,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:36,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 299 transitions, 7612 flow. Second operand has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:36,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:36,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:36,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:41,321 INFO L124 PetriNetUnfolderBase]: 5422/10670 cut-off events. [2025-02-06 12:35:41,321 INFO L125 PetriNetUnfolderBase]: For 4096774/4096780 co-relation queries the response was YES. [2025-02-06 12:35:41,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162123 conditions, 10670 events. 5422/10670 cut-off events. For 4096774/4096780 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 63824 event pairs, 66 based on Foata normal form. 393/11062 useless extension candidates. Maximal degree in co-relation 161977. Up to 2580 conditions per place. [2025-02-06 12:35:41,554 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 312 selfloop transitions, 400 changer transitions 341/1057 dead transitions. [2025-02-06 12:35:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1057 transitions, 42459 flow [2025-02-06 12:35:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2025-02-06 12:35:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2025-02-06 12:35:41,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 1599 transitions. [2025-02-06 12:35:41,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5251231527093596 [2025-02-06 12:35:41,556 INFO L175 Difference]: Start difference. First operand has 356 places, 299 transitions, 7612 flow. Second operand 105 states and 1599 transitions. [2025-02-06 12:35:41,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1057 transitions, 42459 flow [2025-02-06 12:35:44,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1057 transitions, 32333 flow, removed 4971 selfloop flow, removed 36 redundant places. [2025-02-06 12:35:45,001 INFO L231 Difference]: Finished difference. Result has 471 places, 430 transitions, 12645 flow [2025-02-06 12:35:45,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5282, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=12645, PETRI_PLACES=471, PETRI_TRANSITIONS=430} [2025-02-06 12:35:45,002 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2025-02-06 12:35:45,002 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 430 transitions, 12645 flow [2025-02-06 12:35:45,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 10.044444444444444) internal successors, (452), 45 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:45,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:35:45,002 INFO L206 CegarLoopForPetriNet]: trace histogram [19, 19, 18, 17, 17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:35:45,044 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 12:35:45,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:45,208 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:35:45,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:35:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 364186717, now seen corresponding path program 8 times [2025-02-06 12:35:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:35:45,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013919305] [2025-02-06 12:35:45,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:35:45,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-02-06 12:35:45,246 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-02-06 12:35:45,248 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:35:45,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 796 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 12:35:46,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:35:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013919305] [2025-02-06 12:35:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013919305] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:35:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851883255] [2025-02-06 12:35:46,107 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 12:35:46,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:35:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:35:46,109 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 12:35:46,110 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 12:35:46,144 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 118 statements into 2 equivalence classes. [2025-02-06 12:35:46,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 118 of 118 statements. [2025-02-06 12:35:46,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 12:35:46,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:35:46,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 12:35:46,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:35:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 796 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 12:35:46,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:35:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 0 proven. 796 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 12:35:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851883255] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:35:47,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:35:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 77 [2025-02-06 12:35:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126037672] [2025-02-06 12:35:47,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:35:47,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-06 12:35:47,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:35:47,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-06 12:35:47,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1362, Invalid=4644, Unknown=0, NotChecked=0, Total=6006 [2025-02-06 12:35:47,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:35:47,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 430 transitions, 12645 flow. Second operand has 78 states, 78 states have (on average 10.064102564102564) internal successors, (785), 78 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:35:47,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:35:47,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:35:47,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:35:54,455 INFO L124 PetriNetUnfolderBase]: 7501/14368 cut-off events. [2025-02-06 12:35:54,455 INFO L125 PetriNetUnfolderBase]: For 7834711/7834717 co-relation queries the response was YES. [2025-02-06 12:35:54,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240287 conditions, 14368 events. 7501/14368 cut-off events. For 7834711/7834717 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 86336 event pairs, 65 based on Foata normal form. 60/14425 useless extension candidates. Maximal degree in co-relation 240095. Up to 3402 conditions per place. [2025-02-06 12:35:54,684 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 311 selfloop transitions, 575 changer transitions 195/1085 dead transitions. [2025-02-06 12:35:54,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1085 transitions, 47480 flow [2025-02-06 12:35:54,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-02-06 12:35:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2025-02-06 12:35:54,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1299 transitions. [2025-02-06 12:35:54,686 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208500400962309 [2025-02-06 12:35:54,686 INFO L175 Difference]: Start difference. First operand has 471 places, 430 transitions, 12645 flow. Second operand 86 states and 1299 transitions. [2025-02-06 12:35:54,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 1085 transitions, 47480 flow [2025-02-06 12:36:11,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1085 transitions, 29916 flow, removed 8595 selfloop flow, removed 57 redundant places. [2025-02-06 12:36:11,152 INFO L231 Difference]: Finished difference. Result has 496 places, 611 transitions, 13619 flow [2025-02-06 12:36:11,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=7777, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=13619, PETRI_PLACES=496, PETRI_TRANSITIONS=611} [2025-02-06 12:36:11,154 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 466 predicate places. [2025-02-06 12:36:11,154 INFO L471 AbstractCegarLoop]: Abstraction has has 496 places, 611 transitions, 13619 flow [2025-02-06 12:36:11,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 10.064102564102564) internal successors, (785), 78 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:11,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:11,155 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:36:11,162 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 12:36:11,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:36:11,358 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:36:11,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:11,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1390842362, now seen corresponding path program 9 times [2025-02-06 12:36:11,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:11,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799706459] [2025-02-06 12:36:11,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:36:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:11,376 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 130 statements into 14 equivalence classes. [2025-02-06 12:36:11,404 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 12:36:11,405 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-06 12:36:11,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:12,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799706459] [2025-02-06 12:36:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799706459] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:36:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242004730] [2025-02-06 12:36:12,085 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 12:36:12,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:36:12,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:36:12,087 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 12:36:12,088 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 12:36:12,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 130 statements into 14 equivalence classes. [2025-02-06 12:36:12,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 12:36:12,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-02-06 12:36:12,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:12,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 12:36:12,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:36:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 1 proven. 960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:12,277 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:36:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:12,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242004730] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:36:12,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:36:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 45 [2025-02-06 12:36:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826224393] [2025-02-06 12:36:12,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:36:12,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 12:36:12,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:12,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 12:36:12,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1636, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 12:36:12,904 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:36:12,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 611 transitions, 13619 flow. Second operand has 46 states, 46 states have (on average 9.978260869565217) internal successors, (459), 46 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:12,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:12,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:36:12,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:20,662 INFO L124 PetriNetUnfolderBase]: 7501/14411 cut-off events. [2025-02-06 12:36:20,663 INFO L125 PetriNetUnfolderBase]: For 6485440/6485446 co-relation queries the response was YES. [2025-02-06 12:36:20,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202409 conditions, 14411 events. 7501/14411 cut-off events. For 6485440/6485446 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 86589 event pairs, 38 based on Foata normal form. 33/14443 useless extension candidates. Maximal degree in co-relation 202220. Up to 3420 conditions per place. [2025-02-06 12:36:20,882 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 323 selfloop transitions, 584 changer transitions 183/1094 dead transitions. [2025-02-06 12:36:20,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1094 transitions, 32348 flow [2025-02-06 12:36:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-02-06 12:36:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2025-02-06 12:36:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 1323 transitions. [2025-02-06 12:36:20,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5184169278996865 [2025-02-06 12:36:20,883 INFO L175 Difference]: Start difference. First operand has 496 places, 611 transitions, 13619 flow. Second operand 88 states and 1323 transitions. [2025-02-06 12:36:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 1094 transitions, 32348 flow [2025-02-06 12:36:38,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 1094 transitions, 29108 flow, removed 1453 selfloop flow, removed 38 redundant places. [2025-02-06 12:36:38,497 INFO L231 Difference]: Finished difference. Result has 545 places, 618 transitions, 12902 flow [2025-02-06 12:36:38,497 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=11149, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=577, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=12902, PETRI_PLACES=545, PETRI_TRANSITIONS=618} [2025-02-06 12:36:38,497 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 515 predicate places. [2025-02-06 12:36:38,497 INFO L471 AbstractCegarLoop]: Abstraction has has 545 places, 618 transitions, 12902 flow [2025-02-06 12:36:38,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 9.978260869565217) internal successors, (459), 46 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:38,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:36:38,498 INFO L206 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:36:38,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 12:36:38,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:36:38,699 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 12:36:38,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:36:38,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1790796690, now seen corresponding path program 10 times [2025-02-06 12:36:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:36:38,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585923667] [2025-02-06 12:36:38,700 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:36:38,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:36:38,706 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 130 statements into 2 equivalence classes. [2025-02-06 12:36:38,716 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 12:36:38,716 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:36:38,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:36:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585923667] [2025-02-06 12:36:39,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585923667] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 12:36:39,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370658471] [2025-02-06 12:36:39,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 12:36:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 12:36:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:36:39,405 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 12:36:39,405 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 12:36:39,438 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 130 statements into 2 equivalence classes. [2025-02-06 12:36:39,462 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 130 of 130 statements. [2025-02-06 12:36:39,462 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 12:36:39,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:36:39,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 12:36:39,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 12:36:39,573 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:39,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 12:36:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 0 proven. 941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:36:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370658471] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 12:36:40,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 12:36:40,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 44 [2025-02-06 12:36:40,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107364508] [2025-02-06 12:36:40,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 12:36:40,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 12:36:40,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:36:40,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 12:36:40,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 12:36:40,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2025-02-06 12:36:40,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 618 transitions, 12902 flow. Second operand has 45 states, 45 states have (on average 9.955555555555556) internal successors, (448), 45 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 12:36:40,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:36:40,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2025-02-06 12:36:40,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:36:46,271 INFO L124 PetriNetUnfolderBase]: 7672/14741 cut-off events. [2025-02-06 12:36:46,271 INFO L125 PetriNetUnfolderBase]: For 6472779/6472785 co-relation queries the response was YES. [2025-02-06 12:36:46,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205699 conditions, 14741 events. 7672/14741 cut-off events. For 6472779/6472785 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 88547 event pairs, 65 based on Foata normal form. 33/14771 useless extension candidates. Maximal degree in co-relation 205510. Up to 3498 conditions per place. [2025-02-06 12:36:46,531 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 332 selfloop transitions, 592 changer transitions 175/1103 dead transitions. [2025-02-06 12:36:46,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 1103 transitions, 32061 flow [2025-02-06 12:36:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2025-02-06 12:36:46,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2025-02-06 12:36:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 1313 transitions. [2025-02-06 12:36:46,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5204122076892588 [2025-02-06 12:36:46,533 INFO L175 Difference]: Start difference. First operand has 545 places, 618 transitions, 12902 flow. Second operand 87 states and 1313 transitions. [2025-02-06 12:36:46,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 1103 transitions, 32061 flow