./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:04:11,600 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:04:11,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:04:11,661 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:04:11,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:04:11,682 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:04:11,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:04:11,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:04:11,684 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:04:11,685 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:04:11,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:04:11,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:04:11,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:04:11,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:04:11,686 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:04:11,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:11,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:11,688 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:04:11,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:11,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:04:11,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:04:11,689 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 -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c [2025-01-10 01:04:11,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:04:11,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:04:11,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:04:11,901 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:04:11,901 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:04:11,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-01-10 01:04:12,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d50c68d1/aeb60dc33f6a42f8ba60329c3a31c00c/FLAGede4b1b3e [2025-01-10 01:04:13,210 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:04:13,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/mult-dist.wvr.c [2025-01-10 01:04:13,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d50c68d1/aeb60dc33f6a42f8ba60329c3a31c00c/FLAGede4b1b3e [2025-01-10 01:04:13,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d50c68d1/aeb60dc33f6a42f8ba60329c3a31c00c [2025-01-10 01:04:13,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:04:13,228 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:04:13,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:13,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:04:13,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:04:13,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67380d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13, skipping insertion in model container [2025-01-10 01:04:13,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:04:13,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:13,361 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:04:13,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:04:13,390 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:04:13,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13 WrapperNode [2025-01-10 01:04:13,392 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:04:13,393 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:13,393 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:04:13,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:04:13,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,420 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2025-01-10 01:04:13,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:04:13,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:04:13,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:04:13,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:04:13,427 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,437 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]. [2025-01-10 01:04:13,438 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,438 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,441 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,442 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,444 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:04:13,447 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:04:13,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:04:13,448 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:04:13,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (1/1) ... [2025-01-10 01:04:13,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:04:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:13,470 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) [2025-01-10 01:04:13,473 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 [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-01-10 01:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:04:13,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:04:13,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:04:13,490 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:04:13,574 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:04:13,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:04:13,718 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:04:13,718 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:04:13,814 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:04:13,815 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:04:13,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:13 BoogieIcfgContainer [2025-01-10 01:04:13,815 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:04:13,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:04:13,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:04:13,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:04:13,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:04:13" (1/3) ... [2025-01-10 01:04:13,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d676728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:13, skipping insertion in model container [2025-01-10 01:04:13,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:04:13" (2/3) ... [2025-01-10 01:04:13,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d676728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:04:13, skipping insertion in model container [2025-01-10 01:04:13,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:04:13" (3/3) ... [2025-01-10 01:04:13,824 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2025-01-10 01:04:13,836 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:04:13,837 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-dist.wvr.c that has 4 procedures, 25 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2025-01-10 01:04:13,838 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:04:13,878 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-01-10 01:04:13,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2025-01-10 01:04:13,929 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2025-01-10 01:04:13,930 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 01:04:13,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2025-01-10 01:04:13,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2025-01-10 01:04:13,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2025-01-10 01:04:13,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:04:13,953 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;@347c4ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:04:13,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:04:13,960 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:04:13,960 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2025-01-10 01:04:13,960 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-01-10 01:04:13,960 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:13,961 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:13,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:13,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash -792053367, now seen corresponding path program 1 times [2025-01-10 01:04:13,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:13,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669573042] [2025-01-10 01:04:13,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:14,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:04:14,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:04:14,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:14,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:14,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:14,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669573042] [2025-01-10 01:04:14,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669573042] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:14,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:14,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 01:04:14,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338704811] [2025-01-10 01:04:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:14,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:04:14,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:14,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:04:14,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:04:14,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:14,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 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) [2025-01-10 01:04:14,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:14,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:14,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:14,556 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2025-01-10 01:04:14,557 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2025-01-10 01:04:14,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1790 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2025-01-10 01:04:14,565 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2025-01-10 01:04:14,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2025-01-10 01:04:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:04:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:04:14,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2025-01-10 01:04:14,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-01-10 01:04:14,576 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2025-01-10 01:04:14,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2025-01-10 01:04:14,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-01-10 01:04:14,585 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2025-01-10 01:04:14,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2025-01-10 01:04:14,590 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2025-01-10 01:04:14,590 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2025-01-10 01:04:14,590 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) [2025-01-10 01:04:14,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:14,590 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:14,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:04:14,591 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:14,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1214762453, now seen corresponding path program 1 times [2025-01-10 01:04:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:14,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435519364] [2025-01-10 01:04:14,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:14,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:14,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:14,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:14,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:14,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435519364] [2025-01-10 01:04:14,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435519364] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:14,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:14,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 01:04:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581289408] [2025-01-10 01:04:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:14,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:04:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:14,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:04:14,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:04:14,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:14,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:14,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:14,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:14,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:15,064 INFO L124 PetriNetUnfolderBase]: 544/771 cut-off events. [2025-01-10 01:04:15,065 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2025-01-10 01:04:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1913 conditions, 771 events. 544/771 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2518 event pairs, 203 based on Foata normal form. 2/773 useless extension candidates. Maximal degree in co-relation 545. Up to 554 conditions per place. [2025-01-10 01:04:15,068 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 47 selfloop transitions, 18 changer transitions 3/69 dead transitions. [2025-01-10 01:04:15,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 69 transitions, 347 flow [2025-01-10 01:04:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:04:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:04:15,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-01-10 01:04:15,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2025-01-10 01:04:15,070 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 7 states and 94 transitions. [2025-01-10 01:04:15,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 69 transitions, 347 flow [2025-01-10 01:04:15,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:15,072 INFO L231 Difference]: Finished difference. Result has 34 places, 40 transitions, 198 flow [2025-01-10 01:04:15,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=34, PETRI_TRANSITIONS=40} [2025-01-10 01:04:15,073 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2025-01-10 01:04:15,074 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 40 transitions, 198 flow [2025-01-10 01:04:15,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:15,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:15,074 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:15,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:04:15,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:15,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:15,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1264379069, now seen corresponding path program 2 times [2025-01-10 01:04:15,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:15,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581041113] [2025-01-10 01:04:15,076 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:15,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:15,086 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:15,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:15,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:15,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:15,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581041113] [2025-01-10 01:04:15,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581041113] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:15,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656422602] [2025-01-10 01:04:15,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:15,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:15,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:15,302 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) [2025-01-10 01:04:15,304 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 [2025-01-10 01:04:15,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:15,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:15,369 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:15,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:15,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:15,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:15,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656422602] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:15,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:15,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-01-10 01:04:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297301794] [2025-01-10 01:04:15,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:15,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:15,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:15,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:04:15,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:15,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 40 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:15,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:16,248 INFO L124 PetriNetUnfolderBase]: 849/1221 cut-off events. [2025-01-10 01:04:16,248 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2025-01-10 01:04:16,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 1221 events. 849/1221 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4455 event pairs, 231 based on Foata normal form. 6/1227 useless extension candidates. Maximal degree in co-relation 2238. Up to 454 conditions per place. [2025-01-10 01:04:16,255 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 90 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2025-01-10 01:04:16,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 112 transitions, 700 flow [2025-01-10 01:04:16,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:16,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-01-10 01:04:16,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2025-01-10 01:04:16,257 INFO L175 Difference]: Start difference. First operand has 34 places, 40 transitions, 198 flow. Second operand 8 states and 131 transitions. [2025-01-10 01:04:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 112 transitions, 700 flow [2025-01-10 01:04:16,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 112 transitions, 678 flow, removed 11 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:16,261 INFO L231 Difference]: Finished difference. Result has 45 places, 54 transitions, 331 flow [2025-01-10 01:04:16,261 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=331, PETRI_PLACES=45, PETRI_TRANSITIONS=54} [2025-01-10 01:04:16,262 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2025-01-10 01:04:16,262 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 54 transitions, 331 flow [2025-01-10 01:04:16,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:16,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:16,262 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:16,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:16,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:16,467 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:16,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:16,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1329062827, now seen corresponding path program 3 times [2025-01-10 01:04:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285303528] [2025-01-10 01:04:16,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:16,474 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:16,482 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:16,482 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:16,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285303528] [2025-01-10 01:04:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285303528] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861525634] [2025-01-10 01:04:16,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:16,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:16,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:16,622 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) [2025-01-10 01:04:16,624 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 [2025-01-10 01:04:16,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:16,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:16,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:16,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:16,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-10 01:04:16,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:16,809 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:04:16,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861525634] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:16,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:04:16,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2025-01-10 01:04:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220563701] [2025-01-10 01:04:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:16,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-10 01:04:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:16,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-10 01:04:16,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-01-10 01:04:16,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 54 transitions, 331 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2025-01-10 01:04:16,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:16,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:16,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:17,086 INFO L124 PetriNetUnfolderBase]: 955/1373 cut-off events. [2025-01-10 01:04:17,086 INFO L125 PetriNetUnfolderBase]: For 3328/3328 co-relation queries the response was YES. [2025-01-10 01:04:17,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5448 conditions, 1373 events. 955/1373 cut-off events. For 3328/3328 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5100 event pairs, 276 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 3606. Up to 719 conditions per place. [2025-01-10 01:04:17,096 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 73 selfloop transitions, 33 changer transitions 3/110 dead transitions. [2025-01-10 01:04:17,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 110 transitions, 845 flow [2025-01-10 01:04:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2025-01-10 01:04:17,099 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2025-01-10 01:04:17,099 INFO L175 Difference]: Start difference. First operand has 45 places, 54 transitions, 331 flow. Second operand 8 states and 111 transitions. [2025-01-10 01:04:17,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 110 transitions, 845 flow [2025-01-10 01:04:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 110 transitions, 825 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:17,115 INFO L231 Difference]: Finished difference. Result has 57 places, 76 transitions, 609 flow [2025-01-10 01:04:17,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=57, PETRI_TRANSITIONS=76} [2025-01-10 01:04:17,115 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2025-01-10 01:04:17,116 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 76 transitions, 609 flow [2025-01-10 01:04:17,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2025-01-10 01:04:17,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:17,116 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:17,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:17,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:17,317 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:17,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash 152529069, now seen corresponding path program 4 times [2025-01-10 01:04:17,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:17,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762431435] [2025-01-10 01:04:17,318 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:17,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:17,333 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:17,333 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:17,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762431435] [2025-01-10 01:04:17,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762431435] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984738669] [2025-01-10 01:04:17,452 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:17,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:17,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:17,455 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) [2025-01-10 01:04:17,456 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 [2025-01-10 01:04:17,491 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:17,510 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:17,510 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:17,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:17,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 01:04:17,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:17,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:17,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984738669] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:17,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:17,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2025-01-10 01:04:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965885366] [2025-01-10 01:04:17,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:17,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:04:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:17,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:04:17,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:04:17,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:17,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 76 transitions, 609 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:17,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:17,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:17,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:18,888 INFO L124 PetriNetUnfolderBase]: 1641/2465 cut-off events. [2025-01-10 01:04:18,888 INFO L125 PetriNetUnfolderBase]: For 9131/9131 co-relation queries the response was YES. [2025-01-10 01:04:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11338 conditions, 2465 events. 1641/2465 cut-off events. For 9131/9131 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11242 event pairs, 205 based on Foata normal form. 24/2489 useless extension candidates. Maximal degree in co-relation 7609. Up to 843 conditions per place. [2025-01-10 01:04:18,908 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 199 selfloop transitions, 79 changer transitions 0/279 dead transitions. [2025-01-10 01:04:18,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 279 transitions, 2338 flow [2025-01-10 01:04:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 01:04:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-01-10 01:04:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 321 transitions. [2025-01-10 01:04:18,914 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2025-01-10 01:04:18,914 INFO L175 Difference]: Start difference. First operand has 57 places, 76 transitions, 609 flow. Second operand 23 states and 321 transitions. [2025-01-10 01:04:18,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 279 transitions, 2338 flow [2025-01-10 01:04:18,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 279 transitions, 2312 flow, removed 13 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:18,940 INFO L231 Difference]: Finished difference. Result has 94 places, 128 transitions, 1390 flow [2025-01-10 01:04:18,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1390, PETRI_PLACES=94, PETRI_TRANSITIONS=128} [2025-01-10 01:04:18,941 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2025-01-10 01:04:18,941 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 128 transitions, 1390 flow [2025-01-10 01:04:18,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:18,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:18,942 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:18,950 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 [2025-01-10 01:04:19,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:19,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:19,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1657206195, now seen corresponding path program 5 times [2025-01-10 01:04:19,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:19,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331216317] [2025-01-10 01:04:19,148 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:19,154 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:19,166 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:19,166 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:19,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331216317] [2025-01-10 01:04:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331216317] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:19,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214251776] [2025-01-10 01:04:19,299 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:19,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:19,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:19,301 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) [2025-01-10 01:04:19,302 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 [2025-01-10 01:04:19,333 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:19,351 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:19,352 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:19,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:19,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:19,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:19,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214251776] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:19,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:19,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-01-10 01:04:19,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789569878] [2025-01-10 01:04:19,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:19,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:19,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:19,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:19,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:04:19,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:19,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 128 transitions, 1390 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:19,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:19,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:19,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:19,886 INFO L124 PetriNetUnfolderBase]: 1890/2837 cut-off events. [2025-01-10 01:04:19,886 INFO L125 PetriNetUnfolderBase]: For 28985/28985 co-relation queries the response was YES. [2025-01-10 01:04:19,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17756 conditions, 2837 events. 1890/2837 cut-off events. For 28985/28985 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13225 event pairs, 218 based on Foata normal form. 5/2842 useless extension candidates. Maximal degree in co-relation 16896. Up to 989 conditions per place. [2025-01-10 01:04:19,908 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 164 selfloop transitions, 59 changer transitions 0/224 dead transitions. [2025-01-10 01:04:19,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 224 transitions, 2779 flow [2025-01-10 01:04:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2025-01-10 01:04:19,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2025-01-10 01:04:19,910 INFO L175 Difference]: Start difference. First operand has 94 places, 128 transitions, 1390 flow. Second operand 8 states and 132 transitions. [2025-01-10 01:04:19,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 224 transitions, 2779 flow [2025-01-10 01:04:19,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 224 transitions, 2489 flow, removed 127 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:19,972 INFO L231 Difference]: Finished difference. Result has 104 places, 152 transitions, 1784 flow [2025-01-10 01:04:19,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1784, PETRI_PLACES=104, PETRI_TRANSITIONS=152} [2025-01-10 01:04:19,973 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2025-01-10 01:04:19,974 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 152 transitions, 1784 flow [2025-01-10 01:04:19,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:19,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:19,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:19,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-10 01:04:20,175 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,SelfDestructingSolverStorable5 [2025-01-10 01:04:20,175 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:20,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash 3625449, now seen corresponding path program 1 times [2025-01-10 01:04:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472209850] [2025-01-10 01:04:20,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:20,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:20,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:20,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:20,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:20,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472209850] [2025-01-10 01:04:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472209850] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:04:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 01:04:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157250226] [2025-01-10 01:04:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:20,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:04:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:20,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:04:20,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:04:20,301 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:20,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 152 transitions, 1784 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:20,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:20,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:20,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:20,652 INFO L124 PetriNetUnfolderBase]: 1944/2938 cut-off events. [2025-01-10 01:04:20,652 INFO L125 PetriNetUnfolderBase]: For 36710/36710 co-relation queries the response was YES. [2025-01-10 01:04:20,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18444 conditions, 2938 events. 1944/2938 cut-off events. For 36710/36710 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14167 event pairs, 626 based on Foata normal form. 12/2950 useless extension candidates. Maximal degree in co-relation 17367. Up to 1943 conditions per place. [2025-01-10 01:04:20,675 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 186 selfloop transitions, 38 changer transitions 8/233 dead transitions. [2025-01-10 01:04:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 233 transitions, 2939 flow [2025-01-10 01:04:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:04:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:04:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2025-01-10 01:04:20,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5661375661375662 [2025-01-10 01:04:20,677 INFO L175 Difference]: Start difference. First operand has 104 places, 152 transitions, 1784 flow. Second operand 7 states and 107 transitions. [2025-01-10 01:04:20,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 233 transitions, 2939 flow [2025-01-10 01:04:20,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 233 transitions, 2883 flow, removed 28 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:20,751 INFO L231 Difference]: Finished difference. Result has 114 places, 157 transitions, 1904 flow [2025-01-10 01:04:20,752 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1904, PETRI_PLACES=114, PETRI_TRANSITIONS=157} [2025-01-10 01:04:20,752 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2025-01-10 01:04:20,752 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 157 transitions, 1904 flow [2025-01-10 01:04:20,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:20,752 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:20,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:20,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 01:04:20,753 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:20,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:20,753 INFO L85 PathProgramCache]: Analyzing trace with hash 556442940, now seen corresponding path program 1 times [2025-01-10 01:04:20,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:20,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462083596] [2025-01-10 01:04:20,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:20,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:20,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:20,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:20,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:20,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462083596] [2025-01-10 01:04:20,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462083596] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:20,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276144351] [2025-01-10 01:04:20,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:04:20,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:20,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:20,863 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) [2025-01-10 01:04:20,865 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 [2025-01-10 01:04:20,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:20,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:20,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:20,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:20,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 01:04:20,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:20,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:21,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276144351] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:21,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:21,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 11 [2025-01-10 01:04:21,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944005479] [2025-01-10 01:04:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:21,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:21,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:21,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:21,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:04:21,053 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:21,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 157 transitions, 1904 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:21,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:21,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:21,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:21,562 INFO L124 PetriNetUnfolderBase]: 2246/3351 cut-off events. [2025-01-10 01:04:21,563 INFO L125 PetriNetUnfolderBase]: For 46431/46431 co-relation queries the response was YES. [2025-01-10 01:04:21,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21640 conditions, 3351 events. 2246/3351 cut-off events. For 46431/46431 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 15994 event pairs, 330 based on Foata normal form. 10/3361 useless extension candidates. Maximal degree in co-relation 20419. Up to 1145 conditions per place. [2025-01-10 01:04:21,582 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 194 selfloop transitions, 59 changer transitions 0/254 dead transitions. [2025-01-10 01:04:21,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 254 transitions, 3313 flow [2025-01-10 01:04:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:04:21,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:04:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2025-01-10 01:04:21,584 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2025-01-10 01:04:21,584 INFO L175 Difference]: Start difference. First operand has 114 places, 157 transitions, 1904 flow. Second operand 8 states and 131 transitions. [2025-01-10 01:04:21,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 254 transitions, 3313 flow [2025-01-10 01:04:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 254 transitions, 3132 flow, removed 49 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:21,656 INFO L231 Difference]: Finished difference. Result has 122 places, 181 transitions, 2381 flow [2025-01-10 01:04:21,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1815, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2381, PETRI_PLACES=122, PETRI_TRANSITIONS=181} [2025-01-10 01:04:21,656 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2025-01-10 01:04:21,656 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 181 transitions, 2381 flow [2025-01-10 01:04:21,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:21,657 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:21,657 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:21,663 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 [2025-01-10 01:04:21,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:21,857 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:21,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash -2020043664, now seen corresponding path program 2 times [2025-01-10 01:04:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872797899] [2025-01-10 01:04:21,858 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:21,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:21,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:21,870 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:21,871 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:21,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:21,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:21,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872797899] [2025-01-10 01:04:21,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872797899] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717167332] [2025-01-10 01:04:21,983 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:21,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:21,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:21,985 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) [2025-01-10 01:04:21,986 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 [2025-01-10 01:04:22,018 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:22,065 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:22,065 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:22,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:22,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:22,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:22,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:04:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717167332] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:04:22,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:04:22,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-01-10 01:04:22,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111421914] [2025-01-10 01:04:22,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:22,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:04:22,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:22,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:04:22,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 01:04:22,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:22,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 181 transitions, 2381 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:22,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:22,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:22,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:22,512 INFO L124 PetriNetUnfolderBase]: 2253/3364 cut-off events. [2025-01-10 01:04:22,513 INFO L125 PetriNetUnfolderBase]: For 37659/37659 co-relation queries the response was YES. [2025-01-10 01:04:22,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21076 conditions, 3364 events. 2253/3364 cut-off events. For 37659/37659 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16442 event pairs, 689 based on Foata normal form. 3/3367 useless extension candidates. Maximal degree in co-relation 20561. Up to 2221 conditions per place. [2025-01-10 01:04:22,528 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 207 selfloop transitions, 49 changer transitions 3/260 dead transitions. [2025-01-10 01:04:22,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 260 transitions, 3678 flow [2025-01-10 01:04:22,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:04:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:04:22,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2025-01-10 01:04:22,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2025-01-10 01:04:22,529 INFO L175 Difference]: Start difference. First operand has 122 places, 181 transitions, 2381 flow. Second operand 7 states and 100 transitions. [2025-01-10 01:04:22,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 260 transitions, 3678 flow [2025-01-10 01:04:22,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 260 transitions, 3539 flow, removed 58 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:22,593 INFO L231 Difference]: Finished difference. Result has 129 places, 184 transitions, 2467 flow [2025-01-10 01:04:22,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2306, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2467, PETRI_PLACES=129, PETRI_TRANSITIONS=184} [2025-01-10 01:04:22,594 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2025-01-10 01:04:22,594 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 184 transitions, 2467 flow [2025-01-10 01:04:22,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:22,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:22,595 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:22,602 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 [2025-01-10 01:04:22,795 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,SelfDestructingSolverStorable8 [2025-01-10 01:04:22,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:22,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash -738812104, now seen corresponding path program 3 times [2025-01-10 01:04:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:22,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352779625] [2025-01-10 01:04:22,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:22,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:22,804 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:22,805 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:22,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:22,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352779625] [2025-01-10 01:04:22,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352779625] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:22,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325991079] [2025-01-10 01:04:22,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:22,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:22,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:22,912 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) [2025-01-10 01:04:22,914 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 [2025-01-10 01:04:22,941 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:22,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:22,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:22,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:22,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:22,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:23,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:23,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325991079] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:23,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:23,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15 [2025-01-10 01:04:23,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935167891] [2025-01-10 01:04:23,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:23,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:04:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:23,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:04:23,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:04:23,184 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:23,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 184 transitions, 2467 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:23,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:23,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:24,800 INFO L124 PetriNetUnfolderBase]: 4389/6405 cut-off events. [2025-01-10 01:04:24,800 INFO L125 PetriNetUnfolderBase]: For 73313/73313 co-relation queries the response was YES. [2025-01-10 01:04:24,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40752 conditions, 6405 events. 4389/6405 cut-off events. For 73313/73313 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 33240 event pairs, 525 based on Foata normal form. 37/6442 useless extension candidates. Maximal degree in co-relation 39907. Up to 2342 conditions per place. [2025-01-10 01:04:24,838 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 267 selfloop transitions, 341 changer transitions 0/609 dead transitions. [2025-01-10 01:04:24,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 609 transitions, 8672 flow [2025-01-10 01:04:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-10 01:04:24,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2025-01-10 01:04:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 356 transitions. [2025-01-10 01:04:24,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4883401920438957 [2025-01-10 01:04:24,842 INFO L175 Difference]: Start difference. First operand has 129 places, 184 transitions, 2467 flow. Second operand 27 states and 356 transitions. [2025-01-10 01:04:24,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 609 transitions, 8672 flow [2025-01-10 01:04:24,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 609 transitions, 8388 flow, removed 12 selfloop flow, removed 4 redundant places. [2025-01-10 01:04:25,005 INFO L231 Difference]: Finished difference. Result has 170 places, 463 transitions, 7653 flow [2025-01-10 01:04:25,005 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7653, PETRI_PLACES=170, PETRI_TRANSITIONS=463} [2025-01-10 01:04:25,006 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2025-01-10 01:04:25,007 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 463 transitions, 7653 flow [2025-01-10 01:04:25,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:25,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:25,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:25,013 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 [2025-01-10 01:04:25,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:25,208 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:25,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1812020550, now seen corresponding path program 4 times [2025-01-10 01:04:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806781439] [2025-01-10 01:04:25,209 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:25,213 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:25,219 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:25,220 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:25,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:25,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:25,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806781439] [2025-01-10 01:04:25,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806781439] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:25,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551101718] [2025-01-10 01:04:25,301 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:04:25,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:25,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:25,303 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) [2025-01-10 01:04:25,305 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 [2025-01-10 01:04:25,332 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:25,353 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:25,353 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:04:25,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:25,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 01:04:25,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:25,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:25,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:25,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:25,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551101718] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:25,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:25,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2025-01-10 01:04:25,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916971501] [2025-01-10 01:04:25,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:25,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:04:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:25,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:04:25,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:04:25,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:25,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 463 transitions, 7653 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:25,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:25,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:25,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:26,887 INFO L124 PetriNetUnfolderBase]: 4598/6760 cut-off events. [2025-01-10 01:04:26,887 INFO L125 PetriNetUnfolderBase]: For 123388/123388 co-relation queries the response was YES. [2025-01-10 01:04:26,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52856 conditions, 6760 events. 4598/6760 cut-off events. For 123388/123388 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 35918 event pairs, 516 based on Foata normal form. 31/6791 useless extension candidates. Maximal degree in co-relation 51846. Up to 2490 conditions per place. [2025-01-10 01:04:26,932 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 390 selfloop transitions, 322 changer transitions 3/716 dead transitions. [2025-01-10 01:04:26,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 716 transitions, 12485 flow [2025-01-10 01:04:26,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-10 01:04:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-01-10 01:04:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 189 transitions. [2025-01-10 01:04:26,933 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-01-10 01:04:26,933 INFO L175 Difference]: Start difference. First operand has 170 places, 463 transitions, 7653 flow. Second operand 14 states and 189 transitions. [2025-01-10 01:04:26,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 716 transitions, 12485 flow [2025-01-10 01:04:27,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 716 transitions, 11677 flow, removed 404 selfloop flow, removed 0 redundant places. [2025-01-10 01:04:27,615 INFO L231 Difference]: Finished difference. Result has 194 places, 545 transitions, 9628 flow [2025-01-10 01:04:27,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7035, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9628, PETRI_PLACES=194, PETRI_TRANSITIONS=545} [2025-01-10 01:04:27,616 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2025-01-10 01:04:27,616 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 545 transitions, 9628 flow [2025-01-10 01:04:27,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:27,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:27,616 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:27,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:27,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:27,817 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:27,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:27,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1457655493, now seen corresponding path program 6 times [2025-01-10 01:04:27,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:27,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645921642] [2025-01-10 01:04:27,817 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:27,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:27,822 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:27,829 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:27,833 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:27,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:27,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645921642] [2025-01-10 01:04:27,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645921642] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:27,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889643440] [2025-01-10 01:04:27,933 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:27,936 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) [2025-01-10 01:04:27,937 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 [2025-01-10 01:04:27,969 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:27,984 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:27,984 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:27,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:27,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:27,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:28,051 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889643440] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:28,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13 [2025-01-10 01:04:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910933303] [2025-01-10 01:04:28,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:28,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:28,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:28,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-01-10 01:04:28,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:28,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 545 transitions, 9628 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:28,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:28,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:28,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:29,169 INFO L124 PetriNetUnfolderBase]: 4580/6742 cut-off events. [2025-01-10 01:04:29,169 INFO L125 PetriNetUnfolderBase]: For 144533/144533 co-relation queries the response was YES. [2025-01-10 01:04:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56123 conditions, 6742 events. 4580/6742 cut-off events. For 144533/144533 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 35946 event pairs, 1083 based on Foata normal form. 18/6760 useless extension candidates. Maximal degree in co-relation 55440. Up to 3933 conditions per place. [2025-01-10 01:04:29,222 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 481 selfloop transitions, 128 changer transitions 0/610 dead transitions. [2025-01-10 01:04:29,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 610 transitions, 11571 flow [2025-01-10 01:04:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:04:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:04:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2025-01-10 01:04:29,224 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2025-01-10 01:04:29,224 INFO L175 Difference]: Start difference. First operand has 194 places, 545 transitions, 9628 flow. Second operand 6 states and 93 transitions. [2025-01-10 01:04:29,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 610 transitions, 11571 flow [2025-01-10 01:04:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 610 transitions, 11239 flow, removed 125 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:29,785 INFO L231 Difference]: Finished difference. Result has 201 places, 547 transitions, 9650 flow [2025-01-10 01:04:29,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9309, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9650, PETRI_PLACES=201, PETRI_TRANSITIONS=547} [2025-01-10 01:04:29,785 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2025-01-10 01:04:29,786 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 547 transitions, 9650 flow [2025-01-10 01:04:29,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:29,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:29,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:29,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-10 01:04:29,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:29,987 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:29,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash -249616957, now seen corresponding path program 7 times [2025-01-10 01:04:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:29,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360294621] [2025-01-10 01:04:29,987 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:29,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:29,998 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:29,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:29,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360294621] [2025-01-10 01:04:30,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360294621] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:30,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534884605] [2025-01-10 01:04:30,077 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:30,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:30,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:30,079 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) [2025-01-10 01:04:30,081 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 [2025-01-10 01:04:30,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:30,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:30,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:30,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:30,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:30,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:30,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534884605] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2025-01-10 01:04:30,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360384915] [2025-01-10 01:04:30,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:30,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:30,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:30,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:30,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:04:30,295 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:30,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 547 transitions, 9650 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:30,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:30,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:30,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:31,396 INFO L124 PetriNetUnfolderBase]: 4594/6766 cut-off events. [2025-01-10 01:04:31,396 INFO L125 PetriNetUnfolderBase]: For 141084/141084 co-relation queries the response was YES. [2025-01-10 01:04:31,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56165 conditions, 6766 events. 4594/6766 cut-off events. For 141084/141084 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 36163 event pairs, 1021 based on Foata normal form. 10/6776 useless extension candidates. Maximal degree in co-relation 55479. Up to 3529 conditions per place. [2025-01-10 01:04:31,441 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 455 selfloop transitions, 185 changer transitions 0/641 dead transitions. [2025-01-10 01:04:31,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 641 transitions, 12043 flow [2025-01-10 01:04:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:04:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:04:31,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-01-10 01:04:31,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2025-01-10 01:04:31,442 INFO L175 Difference]: Start difference. First operand has 201 places, 547 transitions, 9650 flow. Second operand 6 states and 91 transitions. [2025-01-10 01:04:31,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 641 transitions, 12043 flow [2025-01-10 01:04:31,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 641 transitions, 11919 flow, removed 17 selfloop flow, removed 1 redundant places. [2025-01-10 01:04:31,932 INFO L231 Difference]: Finished difference. Result has 208 places, 553 transitions, 10156 flow [2025-01-10 01:04:31,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9538, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10156, PETRI_PLACES=208, PETRI_TRANSITIONS=553} [2025-01-10 01:04:31,933 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2025-01-10 01:04:31,933 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 553 transitions, 10156 flow [2025-01-10 01:04:31,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:31,933 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:31,933 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:31,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-10 01:04:32,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-10 01:04:32,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:32,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:32,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1468726749, now seen corresponding path program 8 times [2025-01-10 01:04:32,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264513779] [2025-01-10 01:04:32,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:32,141 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:32,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:32,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:32,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264513779] [2025-01-10 01:04:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264513779] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405652030] [2025-01-10 01:04:32,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:32,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:32,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:32,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:32,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 01:04:32,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:32,287 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:32,287 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:32,287 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:32,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 01:04:32,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:32,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405652030] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:32,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 7] total 15 [2025-01-10 01:04:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294094696] [2025-01-10 01:04:32,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:32,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:32,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:32,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:04:32,421 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:32,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 553 transitions, 10156 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:32,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:32,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:32,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:33,455 INFO L124 PetriNetUnfolderBase]: 4576/6748 cut-off events. [2025-01-10 01:04:33,456 INFO L125 PetriNetUnfolderBase]: For 145209/145209 co-relation queries the response was YES. [2025-01-10 01:04:33,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57390 conditions, 6748 events. 4576/6748 cut-off events. For 145209/145209 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 36217 event pairs, 1033 based on Foata normal form. 18/6766 useless extension candidates. Maximal degree in co-relation 56633. Up to 3535 conditions per place. [2025-01-10 01:04:33,506 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 458 selfloop transitions, 182 changer transitions 0/641 dead transitions. [2025-01-10 01:04:33,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 641 transitions, 12379 flow [2025-01-10 01:04:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:04:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:04:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-01-10 01:04:33,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-01-10 01:04:33,508 INFO L175 Difference]: Start difference. First operand has 208 places, 553 transitions, 10156 flow. Second operand 6 states and 92 transitions. [2025-01-10 01:04:33,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 641 transitions, 12379 flow [2025-01-10 01:04:34,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 641 transitions, 12092 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:34,159 INFO L231 Difference]: Finished difference. Result has 211 places, 552 transitions, 10208 flow [2025-01-10 01:04:34,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9844, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10208, PETRI_PLACES=211, PETRI_TRANSITIONS=552} [2025-01-10 01:04:34,160 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2025-01-10 01:04:34,160 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 552 transitions, 10208 flow [2025-01-10 01:04:34,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:34,160 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:34,160 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:34,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 01:04:34,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-01-10 01:04:34,364 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:34,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 251673056, now seen corresponding path program 5 times [2025-01-10 01:04:34,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:34,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520213390] [2025-01-10 01:04:34,365 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:34,369 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:34,378 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:34,378 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:34,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:34,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:34,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520213390] [2025-01-10 01:04:34,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520213390] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:34,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393749594] [2025-01-10 01:04:34,511 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:04:34,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:34,513 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:34,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-10 01:04:34,543 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:34,557 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:34,557 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:34,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:34,558 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:34,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:34,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393749594] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:34,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:34,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 17 [2025-01-10 01:04:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256160236] [2025-01-10 01:04:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:34,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:04:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:34,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:04:34,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:04:34,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:34,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 552 transitions, 10208 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:34,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:34,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:34,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:36,261 INFO L124 PetriNetUnfolderBase]: 5197/7725 cut-off events. [2025-01-10 01:04:36,261 INFO L125 PetriNetUnfolderBase]: For 166502/166502 co-relation queries the response was YES. [2025-01-10 01:04:36,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65067 conditions, 7725 events. 5197/7725 cut-off events. For 166502/166502 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 42916 event pairs, 548 based on Foata normal form. 8/7733 useless extension candidates. Maximal degree in co-relation 64343. Up to 2960 conditions per place. [2025-01-10 01:04:36,339 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 442 selfloop transitions, 311 changer transitions 0/754 dead transitions. [2025-01-10 01:04:36,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 754 transitions, 14551 flow [2025-01-10 01:04:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:04:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:04:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2025-01-10 01:04:36,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5843621399176955 [2025-01-10 01:04:36,340 INFO L175 Difference]: Start difference. First operand has 211 places, 552 transitions, 10208 flow. Second operand 9 states and 142 transitions. [2025-01-10 01:04:36,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 754 transitions, 14551 flow [2025-01-10 01:04:37,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 754 transitions, 14137 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-01-10 01:04:37,208 INFO L231 Difference]: Finished difference. Result has 221 places, 649 transitions, 12732 flow [2025-01-10 01:04:37,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9836, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12732, PETRI_PLACES=221, PETRI_TRANSITIONS=649} [2025-01-10 01:04:37,208 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2025-01-10 01:04:37,208 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 649 transitions, 12732 flow [2025-01-10 01:04:37,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:37,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:37,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:37,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-10 01:04:37,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:37,410 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:37,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:37,411 INFO L85 PathProgramCache]: Analyzing trace with hash 286355252, now seen corresponding path program 6 times [2025-01-10 01:04:37,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:37,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941362520] [2025-01-10 01:04:37,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:37,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:37,413 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:37,418 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:37,418 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:37,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941362520] [2025-01-10 01:04:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941362520] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353736212] [2025-01-10 01:04:37,510 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:04:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:37,513 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-10 01:04:37,537 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:37,571 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:37,571 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:04:37,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:37,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:37,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:37,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:37,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353736212] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:37,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:37,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-01-10 01:04:37,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390075987] [2025-01-10 01:04:37,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:37,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:04:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:37,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:04:37,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:04:37,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:37,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 649 transitions, 12732 flow. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:37,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:37,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:37,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:40,168 INFO L124 PetriNetUnfolderBase]: 8002/11871 cut-off events. [2025-01-10 01:04:40,169 INFO L125 PetriNetUnfolderBase]: For 300790/300790 co-relation queries the response was YES. [2025-01-10 01:04:40,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104504 conditions, 11871 events. 8002/11871 cut-off events. For 300790/300790 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 71886 event pairs, 748 based on Foata normal form. 56/11927 useless extension candidates. Maximal degree in co-relation 103535. Up to 3943 conditions per place. [2025-01-10 01:04:40,440 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 881 selfloop transitions, 630 changer transitions 1/1513 dead transitions. [2025-01-10 01:04:40,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1513 transitions, 30285 flow [2025-01-10 01:04:40,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 01:04:40,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 01:04:40,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 321 transitions. [2025-01-10 01:04:40,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5404040404040404 [2025-01-10 01:04:40,441 INFO L175 Difference]: Start difference. First operand has 221 places, 649 transitions, 12732 flow. Second operand 22 states and 321 transitions. [2025-01-10 01:04:40,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1513 transitions, 30285 flow [2025-01-10 01:04:41,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 1513 transitions, 29970 flow, removed 90 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:41,626 INFO L231 Difference]: Finished difference. Result has 254 places, 949 transitions, 21563 flow [2025-01-10 01:04:41,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12469, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=21563, PETRI_PLACES=254, PETRI_TRANSITIONS=949} [2025-01-10 01:04:41,627 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2025-01-10 01:04:41,627 INFO L471 AbstractCegarLoop]: Abstraction has has 254 places, 949 transitions, 21563 flow [2025-01-10 01:04:41,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:41,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:41,627 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:41,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:41,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:41,828 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:41,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:41,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2055494070, now seen corresponding path program 7 times [2025-01-10 01:04:41,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:41,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796246882] [2025-01-10 01:04:41,828 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:41,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:41,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:41,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:41,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:41,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:41,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796246882] [2025-01-10 01:04:41,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796246882] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112837580] [2025-01-10 01:04:41,898 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:04:41,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:41,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:41,900 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:41,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-10 01:04:41,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:04:41,953 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:41,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:04:41,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:41,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:41,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:42,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112837580] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:42,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2025-01-10 01:04:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694214298] [2025-01-10 01:04:42,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:42,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:04:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:42,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:04:42,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:04:42,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:42,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 949 transitions, 21563 flow. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:42,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:42,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:42,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:45,373 INFO L124 PetriNetUnfolderBase]: 8836/12943 cut-off events. [2025-01-10 01:04:45,373 INFO L125 PetriNetUnfolderBase]: For 396251/396251 co-relation queries the response was YES. [2025-01-10 01:04:45,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124111 conditions, 12943 events. 8836/12943 cut-off events. For 396251/396251 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 76476 event pairs, 1836 based on Foata normal form. 28/12971 useless extension candidates. Maximal degree in co-relation 122916. Up to 9630 conditions per place. [2025-01-10 01:04:45,529 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1070 selfloop transitions, 429 changer transitions 0/1500 dead transitions. [2025-01-10 01:04:45,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 1500 transitions, 34165 flow [2025-01-10 01:04:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 01:04:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-01-10 01:04:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 270 transitions. [2025-01-10 01:04:45,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2025-01-10 01:04:45,530 INFO L175 Difference]: Start difference. First operand has 254 places, 949 transitions, 21563 flow. Second operand 21 states and 270 transitions. [2025-01-10 01:04:45,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 1500 transitions, 34165 flow [2025-01-10 01:04:47,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 1500 transitions, 32938 flow, removed 268 selfloop flow, removed 3 redundant places. [2025-01-10 01:04:47,990 INFO L231 Difference]: Finished difference. Result has 283 places, 1149 transitions, 26598 flow [2025-01-10 01:04:47,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=20662, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=949, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=26598, PETRI_PLACES=283, PETRI_TRANSITIONS=1149} [2025-01-10 01:04:47,991 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2025-01-10 01:04:47,991 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 1149 transitions, 26598 flow [2025-01-10 01:04:47,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:47,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:47,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:47,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-10 01:04:48,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 01:04:48,192 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:48,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash 503061439, now seen corresponding path program 9 times [2025-01-10 01:04:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741673607] [2025-01-10 01:04:48,193 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:48,196 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:48,200 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:48,200 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:48,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:48,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741673607] [2025-01-10 01:04:48,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741673607] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:48,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871950111] [2025-01-10 01:04:48,297 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:04:48,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:48,299 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:48,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-10 01:04:48,325 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:48,343 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:48,343 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:04:48,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:48,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:48,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:48,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:48,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871950111] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:48,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:04:48,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 12 [2025-01-10 01:04:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693107531] [2025-01-10 01:04:48,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:04:48,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:04:48,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:48,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:04:48,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-10 01:04:48,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:48,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 1149 transitions, 26598 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:48,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:48,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:48,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:51,429 INFO L124 PetriNetUnfolderBase]: 8810/12881 cut-off events. [2025-01-10 01:04:51,429 INFO L125 PetriNetUnfolderBase]: For 391538/391538 co-relation queries the response was YES. [2025-01-10 01:04:51,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126607 conditions, 12881 events. 8810/12881 cut-off events. For 391538/391538 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 75271 event pairs, 1633 based on Foata normal form. 18/12899 useless extension candidates. Maximal degree in co-relation 125399. Up to 8088 conditions per place. [2025-01-10 01:04:51,583 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 968 selfloop transitions, 249 changer transitions 0/1218 dead transitions. [2025-01-10 01:04:51,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1218 transitions, 30118 flow [2025-01-10 01:04:51,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:04:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:04:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2025-01-10 01:04:51,583 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2025-01-10 01:04:51,584 INFO L175 Difference]: Start difference. First operand has 283 places, 1149 transitions, 26598 flow. Second operand 6 states and 92 transitions. [2025-01-10 01:04:51,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1218 transitions, 30118 flow [2025-01-10 01:04:54,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 1218 transitions, 28680 flow, removed 643 selfloop flow, removed 2 redundant places. [2025-01-10 01:04:54,586 INFO L231 Difference]: Finished difference. Result has 286 places, 1149 transitions, 25784 flow [2025-01-10 01:04:54,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=25286, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=900, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=25784, PETRI_PLACES=286, PETRI_TRANSITIONS=1149} [2025-01-10 01:04:54,587 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2025-01-10 01:04:54,587 INFO L471 AbstractCegarLoop]: Abstraction has has 286 places, 1149 transitions, 25784 flow [2025-01-10 01:04:54,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2025-01-10 01:04:54,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:04:54,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:04:54,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-10 01:04:54,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-10 01:04:54,788 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:04:54,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:04:54,788 INFO L85 PathProgramCache]: Analyzing trace with hash 531604794, now seen corresponding path program 8 times [2025-01-10 01:04:54,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:04:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317634506] [2025-01-10 01:04:54,788 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:54,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:04:54,790 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:54,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:54,795 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:54,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:54,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:04:54,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317634506] [2025-01-10 01:04:54,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317634506] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:04:54,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032854663] [2025-01-10 01:04:54,886 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:04:54,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:04:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:04:54,888 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:04:54,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-10 01:04:54,915 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:04:54,961 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:04:54,961 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:04:54,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:04:54,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:04:54,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:04:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:55,010 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:04:55,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:04:55,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032854663] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:04:55,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:04:55,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2025-01-10 01:04:55,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080810748] [2025-01-10 01:04:55,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:04:55,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-10 01:04:55,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:04:55,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-10 01:04:55,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-01-10 01:04:55,170 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:04:55,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1149 transitions, 25784 flow. Second operand has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:04:55,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:04:55,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:04:55,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:04:58,869 INFO L124 PetriNetUnfolderBase]: 8961/13123 cut-off events. [2025-01-10 01:04:58,869 INFO L125 PetriNetUnfolderBase]: For 367031/367031 co-relation queries the response was YES. [2025-01-10 01:04:58,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123737 conditions, 13123 events. 8961/13123 cut-off events. For 367031/367031 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 77870 event pairs, 1174 based on Foata normal form. 29/13152 useless extension candidates. Maximal degree in co-relation 122968. Up to 4568 conditions per place. [2025-01-10 01:04:59,052 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1277 selfloop transitions, 381 changer transitions 1/1660 dead transitions. [2025-01-10 01:04:59,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 1660 transitions, 36979 flow [2025-01-10 01:04:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 01:04:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-10 01:04:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 254 transitions. [2025-01-10 01:04:59,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4951267056530214 [2025-01-10 01:04:59,054 INFO L175 Difference]: Start difference. First operand has 286 places, 1149 transitions, 25784 flow. Second operand 19 states and 254 transitions. [2025-01-10 01:04:59,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 1660 transitions, 36979 flow [2025-01-10 01:05:01,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1660 transitions, 36365 flow, removed 23 selfloop flow, removed 4 redundant places. [2025-01-10 01:05:01,938 INFO L231 Difference]: Finished difference. Result has 310 places, 1200 transitions, 27331 flow [2025-01-10 01:05:01,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=25214, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=768, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=27331, PETRI_PLACES=310, PETRI_TRANSITIONS=1200} [2025-01-10 01:05:01,939 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2025-01-10 01:05:01,939 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 1200 transitions, 27331 flow [2025-01-10 01:05:01,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.266666666666667) internal successors, (109), 15 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:01,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:01,939 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:01,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-10 01:05:02,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:02,140 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:02,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -795847742, now seen corresponding path program 9 times [2025-01-10 01:05:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:02,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649848699] [2025-01-10 01:05:02,141 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:05:02,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:02,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:02,147 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:02,147 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:05:02,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:02,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649848699] [2025-01-10 01:05:02,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649848699] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889170807] [2025-01-10 01:05:02,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:05:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:02,231 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:02,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-10 01:05:02,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:02,275 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:02,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:05:02,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:02,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:05:02,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:02,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889170807] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:02,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2025-01-10 01:05:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307463985] [2025-01-10 01:05:02,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:02,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-10 01:05:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:02,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-10 01:05:02,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2025-01-10 01:05:02,454 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:02,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1200 transitions, 27331 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:02,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:02,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:02,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:06,117 INFO L124 PetriNetUnfolderBase]: 10138/14721 cut-off events. [2025-01-10 01:05:06,118 INFO L125 PetriNetUnfolderBase]: For 415662/415662 co-relation queries the response was YES. [2025-01-10 01:05:06,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142485 conditions, 14721 events. 10138/14721 cut-off events. For 415662/415662 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 86747 event pairs, 1667 based on Foata normal form. 50/14771 useless extension candidates. Maximal degree in co-relation 141678. Up to 10230 conditions per place. [2025-01-10 01:05:06,320 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 906 selfloop transitions, 771 changer transitions 0/1678 dead transitions. [2025-01-10 01:05:06,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1678 transitions, 39822 flow [2025-01-10 01:05:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-10 01:05:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-01-10 01:05:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 207 transitions. [2025-01-10 01:05:06,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2025-01-10 01:05:06,321 INFO L175 Difference]: Start difference. First operand has 310 places, 1200 transitions, 27331 flow. Second operand 17 states and 207 transitions. [2025-01-10 01:05:06,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1678 transitions, 39822 flow [2025-01-10 01:05:10,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1678 transitions, 39102 flow, removed 54 selfloop flow, removed 5 redundant places. [2025-01-10 01:05:10,253 INFO L231 Difference]: Finished difference. Result has 333 places, 1460 transitions, 34877 flow [2025-01-10 01:05:10,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=26749, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=34877, PETRI_PLACES=333, PETRI_TRANSITIONS=1460} [2025-01-10 01:05:10,254 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2025-01-10 01:05:10,254 INFO L471 AbstractCegarLoop]: Abstraction has has 333 places, 1460 transitions, 34877 flow [2025-01-10 01:05:10,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:10,254 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:10,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:10,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-10 01:05:10,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:10,455 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:10,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:10,455 INFO L85 PathProgramCache]: Analyzing trace with hash 369802436, now seen corresponding path program 10 times [2025-01-10 01:05:10,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:10,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172427275] [2025-01-10 01:05:10,455 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:05:10,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:10,458 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:10,461 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:10,461 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-10 01:05:10,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:10,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:10,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172427275] [2025-01-10 01:05:10,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172427275] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:10,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:05:10,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-10 01:05:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461092188] [2025-01-10 01:05:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:10,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:05:10,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:10,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:05:10,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-01-10 01:05:10,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:10,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1460 transitions, 34877 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:10,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:10,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:10,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:14,681 INFO L124 PetriNetUnfolderBase]: 10318/15111 cut-off events. [2025-01-10 01:05:14,681 INFO L125 PetriNetUnfolderBase]: For 472725/472725 co-relation queries the response was YES. [2025-01-10 01:05:14,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154276 conditions, 15111 events. 10318/15111 cut-off events. For 472725/472725 co-relation queries the response was YES. Maximal size of possible extension queue 950. Compared 91043 event pairs, 2487 based on Foata normal form. 45/15156 useless extension candidates. Maximal degree in co-relation 153462. Up to 13277 conditions per place. [2025-01-10 01:05:15,046 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 1295 selfloop transitions, 319 changer transitions 9/1624 dead transitions. [2025-01-10 01:05:15,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1624 transitions, 41151 flow [2025-01-10 01:05:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:05:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:05:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2025-01-10 01:05:15,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2025-01-10 01:05:15,047 INFO L175 Difference]: Start difference. First operand has 333 places, 1460 transitions, 34877 flow. Second operand 6 states and 85 transitions. [2025-01-10 01:05:15,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1624 transitions, 41151 flow [2025-01-10 01:05:18,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1624 transitions, 40445 flow, removed 353 selfloop flow, removed 0 redundant places. [2025-01-10 01:05:18,774 INFO L231 Difference]: Finished difference. Result has 341 places, 1509 transitions, 36381 flow [2025-01-10 01:05:18,774 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=34171, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=36381, PETRI_PLACES=341, PETRI_TRANSITIONS=1509} [2025-01-10 01:05:18,775 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2025-01-10 01:05:18,775 INFO L471 AbstractCegarLoop]: Abstraction has has 341 places, 1509 transitions, 36381 flow [2025-01-10 01:05:18,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:18,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:18,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:18,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-10 01:05:18,775 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:18,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:18,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1351474032, now seen corresponding path program 11 times [2025-01-10 01:05:18,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:18,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969385727] [2025-01-10 01:05:18,776 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:05:18,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:18,779 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:18,784 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:18,784 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:05:18,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:18,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:18,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969385727] [2025-01-10 01:05:18,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969385727] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:18,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370478931] [2025-01-10 01:05:18,881 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:05:18,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:18,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:18,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:18,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-10 01:05:18,914 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:18,928 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:18,928 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:05:18,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:18,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:05:18,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:18,960 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:05:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370478931] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:18,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:05:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2025-01-10 01:05:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127405595] [2025-01-10 01:05:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:18,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:05:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:18,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:05:18,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:05:18,962 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:18,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 1509 transitions, 36381 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:18,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:18,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:23,377 INFO L124 PetriNetUnfolderBase]: 10386/15270 cut-off events. [2025-01-10 01:05:23,378 INFO L125 PetriNetUnfolderBase]: For 461523/461523 co-relation queries the response was YES. [2025-01-10 01:05:23,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156098 conditions, 15270 events. 10386/15270 cut-off events. For 461523/461523 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 92652 event pairs, 1146 based on Foata normal form. 27/15297 useless extension candidates. Maximal degree in co-relation 155212. Up to 6290 conditions per place. [2025-01-10 01:05:23,545 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 963 selfloop transitions, 741 changer transitions 14/1719 dead transitions. [2025-01-10 01:05:23,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1719 transitions, 43973 flow [2025-01-10 01:05:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:05:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:05:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2025-01-10 01:05:23,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2025-01-10 01:05:23,546 INFO L175 Difference]: Start difference. First operand has 341 places, 1509 transitions, 36381 flow. Second operand 7 states and 94 transitions. [2025-01-10 01:05:23,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1719 transitions, 43973 flow [2025-01-10 01:05:27,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1719 transitions, 43502 flow, removed 90 selfloop flow, removed 1 redundant places. [2025-01-10 01:05:27,586 INFO L231 Difference]: Finished difference. Result has 350 places, 1529 transitions, 38355 flow [2025-01-10 01:05:27,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=35927, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=720, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38355, PETRI_PLACES=350, PETRI_TRANSITIONS=1529} [2025-01-10 01:05:27,587 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2025-01-10 01:05:27,587 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 1529 transitions, 38355 flow [2025-01-10 01:05:27,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:27,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:27,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:27,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-10 01:05:27,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:27,788 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:27,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:27,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1862764884, now seen corresponding path program 12 times [2025-01-10 01:05:27,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233539078] [2025-01-10 01:05:27,789 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:05:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:27,791 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:27,795 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:27,795 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:05:27,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:27,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233539078] [2025-01-10 01:05:27,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233539078] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:27,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035850261] [2025-01-10 01:05:27,873 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:05:27,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:27,876 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:27,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-10 01:05:27,902 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 2 equivalence classes. [2025-01-10 01:05:27,948 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:27,948 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:05:27,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:27,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:05:27,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:27,965 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:05:27,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035850261] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:05:27,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-10 01:05:27,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 8 [2025-01-10 01:05:27,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202586713] [2025-01-10 01:05:27,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:05:27,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:05:27,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:27,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:05:27,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-01-10 01:05:27,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:27,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1529 transitions, 38355 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:27,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:27,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:32,067 INFO L124 PetriNetUnfolderBase]: 10446/15353 cut-off events. [2025-01-10 01:05:32,067 INFO L125 PetriNetUnfolderBase]: For 521697/521697 co-relation queries the response was YES. [2025-01-10 01:05:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159920 conditions, 15353 events. 10446/15353 cut-off events. For 521697/521697 co-relation queries the response was YES. Maximal size of possible extension queue 974. Compared 93299 event pairs, 2088 based on Foata normal form. 3/15356 useless extension candidates. Maximal degree in co-relation 159652. Up to 10232 conditions per place. [2025-01-10 01:05:32,313 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 1331 selfloop transitions, 338 changer transitions 5/1675 dead transitions. [2025-01-10 01:05:32,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1675 transitions, 44063 flow [2025-01-10 01:05:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:05:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:05:32,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2025-01-10 01:05:32,314 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-01-10 01:05:32,314 INFO L175 Difference]: Start difference. First operand has 350 places, 1529 transitions, 38355 flow. Second operand 7 states and 99 transitions. [2025-01-10 01:05:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1675 transitions, 44063 flow [2025-01-10 01:05:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1675 transitions, 42755 flow, removed 22 selfloop flow, removed 3 redundant places. [2025-01-10 01:05:36,731 INFO L231 Difference]: Finished difference. Result has 355 places, 1541 transitions, 38151 flow [2025-01-10 01:05:36,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=37080, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38151, PETRI_PLACES=355, PETRI_TRANSITIONS=1541} [2025-01-10 01:05:36,733 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2025-01-10 01:05:36,733 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 1541 transitions, 38151 flow [2025-01-10 01:05:36,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:36,734 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:36,734 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:36,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-10 01:05:36,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:36,935 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:05:36,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:05:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -436394012, now seen corresponding path program 13 times [2025-01-10 01:05:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:05:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950130503] [2025-01-10 01:05:36,935 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:05:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:05:36,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:05:36,943 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:36,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:36,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:05:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950130503] [2025-01-10 01:05:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950130503] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:05:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589160531] [2025-01-10 01:05:37,013 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:05:37,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:05:37,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:05:37,015 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:05:37,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-10 01:05:37,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-10 01:05:37,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-10 01:05:37,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:05:37,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:05:37,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 01:05:37,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:05:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:37,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:05:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:05:37,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589160531] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:05:37,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:05:37,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2025-01-10 01:05:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124663281] [2025-01-10 01:05:37,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:05:37,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-10 01:05:37,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:05:37,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-10 01:05:37,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2025-01-10 01:05:37,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-01-10 01:05:37,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1541 transitions, 38151 flow. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:37,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:05:37,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-01-10 01:05:37,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:05:43,098 INFO L124 PetriNetUnfolderBase]: 10742/15790 cut-off events. [2025-01-10 01:05:43,099 INFO L125 PetriNetUnfolderBase]: For 522288/522288 co-relation queries the response was YES. [2025-01-10 01:05:43,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164666 conditions, 15790 events. 10742/15790 cut-off events. For 522288/522288 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 96813 event pairs, 1229 based on Foata normal form. 32/15822 useless extension candidates. Maximal degree in co-relation 164402. Up to 4828 conditions per place. [2025-01-10 01:05:43,297 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1535 selfloop transitions, 525 changer transitions 1/2062 dead transitions. [2025-01-10 01:05:43,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 2062 transitions, 51723 flow [2025-01-10 01:05:43,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 01:05:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-01-10 01:05:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 244 transitions. [2025-01-10 01:05:43,298 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2025-01-10 01:05:43,298 INFO L175 Difference]: Start difference. First operand has 355 places, 1541 transitions, 38151 flow. Second operand 18 states and 244 transitions. [2025-01-10 01:05:43,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 2062 transitions, 51723 flow [2025-01-10 01:05:47,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 2062 transitions, 51213 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-01-10 01:05:47,288 INFO L231 Difference]: Finished difference. Result has 378 places, 1615 transitions, 41152 flow [2025-01-10 01:05:47,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=37546, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1017, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=41152, PETRI_PLACES=378, PETRI_TRANSITIONS=1615} [2025-01-10 01:05:47,290 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 348 predicate places. [2025-01-10 01:05:47,290 INFO L471 AbstractCegarLoop]: Abstraction has has 378 places, 1615 transitions, 41152 flow [2025-01-10 01:05:47,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:05:47,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:05:47,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:05:47,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0