./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.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/popl20-nonblocking-cntr.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 fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:11:38,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:11:38,265 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:11:38,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:11:38,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:11:38,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:11:38,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:11:38,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:11:38,293 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:11:38,294 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:11:38,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:11:38,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:11:38,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:11:38,295 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:11:38,296 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:11:38,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:11:38,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:11:38,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:11:38,296 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 -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2025-01-10 01:11:38,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:11:38,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:11:38,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:11:38,520 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:11:38,520 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:11:38,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-01-10 01:11:39,652 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a26292792/ec2a5fd08d2b4ad38dec02e141e5de3d/FLAG6e1663c47 [2025-01-10 01:11:39,989 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:11:39,990 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2025-01-10 01:11:39,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a26292792/ec2a5fd08d2b4ad38dec02e141e5de3d/FLAG6e1663c47 [2025-01-10 01:11:40,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a26292792/ec2a5fd08d2b4ad38dec02e141e5de3d [2025-01-10 01:11:40,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:11:40,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:11:40,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:11:40,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:11:40,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:11:40,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,252 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139279b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40, skipping insertion in model container [2025-01-10 01:11:40,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:11:40,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:11:40,398 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:11:40,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:11:40,418 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:11:40,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40 WrapperNode [2025-01-10 01:11:40,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:11:40,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:11:40,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:11:40,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:11:40,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,428 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,437 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2025-01-10 01:11:40,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:11:40,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:11:40,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:11:40,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:11:40,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,451 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 01:11:40,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,454 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,454 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,456 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,457 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,458 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:11:40,458 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:11:40,459 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:11:40,459 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:11:40,460 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (1/1) ... [2025-01-10 01:11:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:11:40,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:40,489 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 01:11:40,495 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 01:11:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:11:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-01-10 01:11:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-01-10 01:11:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-01-10 01:11:40,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-01-10 01:11:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:11:40,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 01:11:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 01:11:40,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:11:40,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:11:40,535 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 01:11:40,601 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:11:40,602 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:11:40,734 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:11:40,734 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:11:40,875 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:11:40,875 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:11:40,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:11:40 BoogieIcfgContainer [2025-01-10 01:11:40,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:11:40,882 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:11:40,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:11:40,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:11:40,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:11:40" (1/3) ... [2025-01-10 01:11:40,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6775ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:11:40, skipping insertion in model container [2025-01-10 01:11:40,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:40" (2/3) ... [2025-01-10 01:11:40,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e6775ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:11:40, skipping insertion in model container [2025-01-10 01:11:40,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:11:40" (3/3) ... [2025-01-10 01:11:40,888 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2025-01-10 01:11:40,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:11:40,898 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-10 01:11:40,899 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:11:40,922 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-01-10 01:11:40,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2025-01-10 01:11:40,971 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2025-01-10 01:11:40,975 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:11:40,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2025-01-10 01:11:40,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2025-01-10 01:11:40,981 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2025-01-10 01:11:40,990 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:11:41,001 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;@4d1a93fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:11:41,003 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-01-10 01:11:41,014 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:11:41,014 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2025-01-10 01:11:41,014 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:11:41,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:41,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:41,016 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:41,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1216436068, now seen corresponding path program 1 times [2025-01-10 01:11:41,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:41,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381725995] [2025-01-10 01:11:41,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:11:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:41,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 01:11:41,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 01:11:41,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:41,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:41,252 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 01:11:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381725995] [2025-01-10 01:11:41,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381725995] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:11:41,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:11:41,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:11:41,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243252931] [2025-01-10 01:11:41,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:11:41,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:11:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:41,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:11:41,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:11:41,298 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-01-10 01:11:41,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 01:11:41,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:41,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-01-10 01:11:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:41,387 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2025-01-10 01:11:41,387 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-01-10 01:11:41,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 123 events. 61/123 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 365 event pairs, 31 based on Foata normal form. 10/128 useless extension candidates. Maximal degree in co-relation 213. Up to 86 conditions per place. [2025-01-10 01:11:41,390 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 19 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2025-01-10 01:11:41,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 25 transitions, 109 flow [2025-01-10 01:11:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:11:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:11:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2025-01-10 01:11:41,401 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2025-01-10 01:11:41,403 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 48 transitions. [2025-01-10 01:11:41,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 25 transitions, 109 flow [2025-01-10 01:11:41,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-01-10 01:11:41,409 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2025-01-10 01:11:41,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2025-01-10 01:11:41,414 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2025-01-10 01:11:41,414 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2025-01-10 01:11:41,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 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 01:11:41,414 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:41,414 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:41,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:11:41,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:41,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:41,416 INFO L85 PathProgramCache]: Analyzing trace with hash -732536838, now seen corresponding path program 1 times [2025-01-10 01:11:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:41,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154133110] [2025-01-10 01:11:41,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:11:41,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:41,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-10 01:11:41,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-10 01:11:41,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:41,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:11:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154133110] [2025-01-10 01:11:41,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154133110] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:11:41,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:11:41,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 01:11:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475720579] [2025-01-10 01:11:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:11:41,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 01:11:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:41,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 01:11:41,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 01:11:41,524 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-01-10 01:11:41,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 01:11:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-01-10 01:11:41,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:41,577 INFO L124 PetriNetUnfolderBase]: 89/174 cut-off events. [2025-01-10 01:11:41,577 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2025-01-10 01:11:41,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 174 events. 89/174 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 586 event pairs, 42 based on Foata normal form. 10/177 useless extension candidates. Maximal degree in co-relation 103. Up to 108 conditions per place. [2025-01-10 01:11:41,579 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2025-01-10 01:11:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 133 flow [2025-01-10 01:11:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:11:41,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:11:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2025-01-10 01:11:41,580 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2025-01-10 01:11:41,580 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 48 transitions. [2025-01-10 01:11:41,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 133 flow [2025-01-10 01:11:41,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:11:41,582 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2025-01-10 01:11:41,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2025-01-10 01:11:41,582 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2025-01-10 01:11:41,582 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2025-01-10 01:11:41,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 01:11:41,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:41,583 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 01:11:41,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:11:41,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:41,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:41,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1080183193, now seen corresponding path program 1 times [2025-01-10 01:11:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039125414] [2025-01-10 01:11:41,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:11:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:41,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:11:41,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:11:41,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:41,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:41,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039125414] [2025-01-10 01:11:41,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039125414] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602373033] [2025-01-10 01:11:41,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:11:41,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:41,774 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 01:11:41,776 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 01:11:41,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-10 01:11:41,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:11:41,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:41,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:41,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:11:41,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:41,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602373033] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:42,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:42,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 5 [2025-01-10 01:11:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189549651] [2025-01-10 01:11:42,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:42,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:11:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:42,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:11:42,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:11:42,094 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2025-01-10 01:11:42,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 01:11:42,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:42,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2025-01-10 01:11:42,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:42,197 INFO L124 PetriNetUnfolderBase]: 153/306 cut-off events. [2025-01-10 01:11:42,198 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2025-01-10 01:11:42,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 306 events. 153/306 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1159 event pairs, 23 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 235. Up to 97 conditions per place. [2025-01-10 01:11:42,200 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2025-01-10 01:11:42,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 235 flow [2025-01-10 01:11:42,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 01:11:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 01:11:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2025-01-10 01:11:42,201 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2025-01-10 01:11:42,201 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 63 transitions. [2025-01-10 01:11:42,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 235 flow [2025-01-10 01:11:42,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 01:11:42,203 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2025-01-10 01:11:42,203 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2025-01-10 01:11:42,203 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2025-01-10 01:11:42,203 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2025-01-10 01:11:42,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 01:11:42,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:42,203 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 01:11:42,210 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 01:11:42,409 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 01:11:42,410 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:42,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 431399115, now seen corresponding path program 2 times [2025-01-10 01:11:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402758286] [2025-01-10 01:11:42,412 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:11:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:42,422 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:11:42,428 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:11:42,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:42,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:11:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402758286] [2025-01-10 01:11:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402758286] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234632057] [2025-01-10 01:11:42,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:11:42,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:42,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:42,502 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 01:11:42,503 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 01:11:42,530 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-10 01:11:42,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-10 01:11:42,541 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:42,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:42,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-10 01:11:42,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:11:42,629 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:11:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234632057] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:42,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-10 01:11:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458843884] [2025-01-10 01:11:42,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:42,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:11:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:42,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:11:42,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:11:42,821 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 01:11:42,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 98 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 01:11:42,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:42,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 01:11:42,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:42,926 INFO L124 PetriNetUnfolderBase]: 286/531 cut-off events. [2025-01-10 01:11:42,926 INFO L125 PetriNetUnfolderBase]: For 380/380 co-relation queries the response was YES. [2025-01-10 01:11:42,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 531 events. 286/531 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2198 event pairs, 32 based on Foata normal form. 18/548 useless extension candidates. Maximal degree in co-relation 507. Up to 242 conditions per place. [2025-01-10 01:11:42,932 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2025-01-10 01:11:42,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2025-01-10 01:11:42,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 01:11:42,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-01-10 01:11:42,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2025-01-10 01:11:42,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2025-01-10 01:11:42,934 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 70 transitions. [2025-01-10 01:11:42,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2025-01-10 01:11:42,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 01:11:42,936 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2025-01-10 01:11:42,936 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2025-01-10 01:11:42,936 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2025-01-10 01:11:42,936 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2025-01-10 01:11:42,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 01:11:42,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:42,938 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:42,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-10 01:11:43,139 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 01:11:43,139 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:43,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash -203223116, now seen corresponding path program 3 times [2025-01-10 01:11:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27854441] [2025-01-10 01:11:43,143 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:11:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:43,152 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-10 01:11:43,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:43,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:11:43,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:43,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27854441] [2025-01-10 01:11:43,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27854441] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:43,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120367956] [2025-01-10 01:11:43,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:11:43,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:43,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:43,305 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 01:11:43,311 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 01:11:43,338 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-10 01:11:43,350 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:43,350 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:11:43,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:43,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:11:43,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:43,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:11:43,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120367956] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:43,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:43,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2025-01-10 01:11:43,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279487475] [2025-01-10 01:11:43,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:43,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 01:11:43,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:43,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 01:11:43,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2025-01-10 01:11:43,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:43,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 219 flow. Second operand has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 01:11:43,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:43,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:43,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:44,318 INFO L124 PetriNetUnfolderBase]: 930/1563 cut-off events. [2025-01-10 01:11:44,319 INFO L125 PetriNetUnfolderBase]: For 2490/2490 co-relation queries the response was YES. [2025-01-10 01:11:44,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5274 conditions, 1563 events. 930/1563 cut-off events. For 2490/2490 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7247 event pairs, 35 based on Foata normal form. 40/1603 useless extension candidates. Maximal degree in co-relation 2812. Up to 303 conditions per place. [2025-01-10 01:11:44,334 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 117 selfloop transitions, 110 changer transitions 5/233 dead transitions. [2025-01-10 01:11:44,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 233 transitions, 1796 flow [2025-01-10 01:11:44,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-10 01:11:44,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2025-01-10 01:11:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 280 transitions. [2025-01-10 01:11:44,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2025-01-10 01:11:44,342 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 28 states and 280 transitions. [2025-01-10 01:11:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 233 transitions, 1796 flow [2025-01-10 01:11:44,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 233 transitions, 1784 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-10 01:11:44,356 INFO L231 Difference]: Finished difference. Result has 82 places, 132 transitions, 1319 flow [2025-01-10 01:11:44,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1319, PETRI_PLACES=82, PETRI_TRANSITIONS=132} [2025-01-10 01:11:44,358 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 57 predicate places. [2025-01-10 01:11:44,361 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 132 transitions, 1319 flow [2025-01-10 01:11:44,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.631578947368421) internal successors, (126), 19 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 01:11:44,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:44,362 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:44,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:11:44,563 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 01:11:44,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:44,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1878926254, now seen corresponding path program 4 times [2025-01-10 01:11:44,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:44,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873275325] [2025-01-10 01:11:44,568 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:11:44,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:44,576 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:44,589 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-01-10 01:11:44,590 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:11:44,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:44,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:44,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873275325] [2025-01-10 01:11:44,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873275325] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:44,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870090513] [2025-01-10 01:11:44,667 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:11:44,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:44,670 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 01:11:44,672 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 01:11:44,699 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:44,708 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-01-10 01:11:44,708 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:11:44,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:44,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:11:44,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:44,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:44,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870090513] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:44,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:44,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2025-01-10 01:11:44,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908786364] [2025-01-10 01:11:44,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:44,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:11:44,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:44,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:11:44,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:11:44,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:44,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 132 transitions, 1319 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 01:11:44,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:44,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:45,114 INFO L124 PetriNetUnfolderBase]: 1070/1811 cut-off events. [2025-01-10 01:11:45,115 INFO L125 PetriNetUnfolderBase]: For 13211/13211 co-relation queries the response was YES. [2025-01-10 01:11:45,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9884 conditions, 1811 events. 1070/1811 cut-off events. For 13211/13211 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8918 event pairs, 43 based on Foata normal form. 20/1831 useless extension candidates. Maximal degree in co-relation 7844. Up to 545 conditions per place. [2025-01-10 01:11:45,128 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 105 selfloop transitions, 148 changer transitions 23/277 dead transitions. [2025-01-10 01:11:45,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 277 transitions, 3156 flow [2025-01-10 01:11:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 01:11:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 01:11:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 153 transitions. [2025-01-10 01:11:45,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2025-01-10 01:11:45,129 INFO L175 Difference]: Start difference. First operand has 82 places, 132 transitions, 1319 flow. Second operand 15 states and 153 transitions. [2025-01-10 01:11:45,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 277 transitions, 3156 flow [2025-01-10 01:11:45,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 277 transitions, 2955 flow, removed 88 selfloop flow, removed 3 redundant places. [2025-01-10 01:11:45,163 INFO L231 Difference]: Finished difference. Result has 101 places, 193 transitions, 2356 flow [2025-01-10 01:11:45,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2356, PETRI_PLACES=101, PETRI_TRANSITIONS=193} [2025-01-10 01:11:45,164 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 76 predicate places. [2025-01-10 01:11:45,164 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 193 transitions, 2356 flow [2025-01-10 01:11:45,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 01:11:45,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:45,164 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:45,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 01:11:45,368 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 01:11:45,368 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:45,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:45,369 INFO L85 PathProgramCache]: Analyzing trace with hash 858402658, now seen corresponding path program 5 times [2025-01-10 01:11:45,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:45,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660996273] [2025-01-10 01:11:45,369 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:11:45,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:45,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:45,383 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:45,383 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:45,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:45,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:45,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660996273] [2025-01-10 01:11:45,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660996273] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:45,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183603637] [2025-01-10 01:11:45,449 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:11:45,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:45,451 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 01:11:45,453 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 01:11:45,478 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:45,490 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:45,490 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:45,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:45,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:11:45,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:45,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:45,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:45,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183603637] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:45,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:45,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2025-01-10 01:11:45,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688888859] [2025-01-10 01:11:45,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:45,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:11:45,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:45,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:11:45,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:11:45,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:45,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 193 transitions, 2356 flow. Second operand has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:11:45,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:45,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:45,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:46,304 INFO L124 PetriNetUnfolderBase]: 1482/2456 cut-off events. [2025-01-10 01:11:46,304 INFO L125 PetriNetUnfolderBase]: For 29370/29370 co-relation queries the response was YES. [2025-01-10 01:11:46,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15588 conditions, 2456 events. 1482/2456 cut-off events. For 29370/29370 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12620 event pairs, 114 based on Foata normal form. 20/2476 useless extension candidates. Maximal degree in co-relation 12968. Up to 507 conditions per place. [2025-01-10 01:11:46,322 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 206 selfloop transitions, 201 changer transitions 1/409 dead transitions. [2025-01-10 01:11:46,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 409 transitions, 5565 flow [2025-01-10 01:11:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-10 01:11:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2025-01-10 01:11:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 251 transitions. [2025-01-10 01:11:46,324 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4197324414715719 [2025-01-10 01:11:46,324 INFO L175 Difference]: Start difference. First operand has 101 places, 193 transitions, 2356 flow. Second operand 26 states and 251 transitions. [2025-01-10 01:11:46,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 409 transitions, 5565 flow [2025-01-10 01:11:46,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 409 transitions, 5187 flow, removed 103 selfloop flow, removed 1 redundant places. [2025-01-10 01:11:46,416 INFO L231 Difference]: Finished difference. Result has 134 places, 308 transitions, 3948 flow [2025-01-10 01:11:46,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3948, PETRI_PLACES=134, PETRI_TRANSITIONS=308} [2025-01-10 01:11:46,417 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 109 predicate places. [2025-01-10 01:11:46,417 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 308 transitions, 3948 flow [2025-01-10 01:11:46,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 17 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:11:46,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:46,417 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:46,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-10 01:11:46,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:46,622 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:46,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:46,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2071500352, now seen corresponding path program 6 times [2025-01-10 01:11:46,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:46,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098888425] [2025-01-10 01:11:46,622 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:11:46,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:46,626 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:46,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:46,631 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:11:46,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:46,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098888425] [2025-01-10 01:11:46,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098888425] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:46,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165268924] [2025-01-10 01:11:46,714 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:11:46,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:46,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:46,716 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 01:11:46,718 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 01:11:46,748 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:46,758 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:46,758 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:11:46,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:46,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 01:11:46,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:46,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165268924] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:46,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 21 [2025-01-10 01:11:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322322124] [2025-01-10 01:11:46,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:46,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 01:11:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:46,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 01:11:46,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-01-10 01:11:46,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:46,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 308 transitions, 3948 flow. Second operand has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 01:11:46,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:46,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:46,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:47,889 INFO L124 PetriNetUnfolderBase]: 1752/2915 cut-off events. [2025-01-10 01:11:47,890 INFO L125 PetriNetUnfolderBase]: For 35323/35323 co-relation queries the response was YES. [2025-01-10 01:11:47,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19075 conditions, 2915 events. 1752/2915 cut-off events. For 35323/35323 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15527 event pairs, 47 based on Foata normal form. 42/2957 useless extension candidates. Maximal degree in co-relation 17719. Up to 559 conditions per place. [2025-01-10 01:11:47,917 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 183 selfloop transitions, 321 changer transitions 1/506 dead transitions. [2025-01-10 01:11:47,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 506 transitions, 7276 flow [2025-01-10 01:11:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-10 01:11:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-01-10 01:11:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 221 transitions. [2025-01-10 01:11:47,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4367588932806324 [2025-01-10 01:11:47,918 INFO L175 Difference]: Start difference. First operand has 134 places, 308 transitions, 3948 flow. Second operand 22 states and 221 transitions. [2025-01-10 01:11:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 506 transitions, 7276 flow [2025-01-10 01:11:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 506 transitions, 6884 flow, removed 190 selfloop flow, removed 4 redundant places. [2025-01-10 01:11:48,042 INFO L231 Difference]: Finished difference. Result has 162 places, 407 transitions, 6163 flow [2025-01-10 01:11:48,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3639, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6163, PETRI_PLACES=162, PETRI_TRANSITIONS=407} [2025-01-10 01:11:48,043 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 137 predicate places. [2025-01-10 01:11:48,043 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 407 transitions, 6163 flow [2025-01-10 01:11:48,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 21 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 01:11:48,043 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:48,043 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:48,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-10 01:11:48,243 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,SelfDestructingSolverStorable7 [2025-01-10 01:11:48,244 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:48,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash -457398358, now seen corresponding path program 7 times [2025-01-10 01:11:48,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:48,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218375425] [2025-01-10 01:11:48,244 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:11:48,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:48,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 01:11:48,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:48,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:48,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:48,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218375425] [2025-01-10 01:11:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218375425] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958018748] [2025-01-10 01:11:48,341 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:11:48,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:48,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:48,343 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 01:11:48,348 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 01:11:48,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 01:11:48,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:48,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:11:48,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:48,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:11:48,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:48,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:48,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:48,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958018748] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:48,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:48,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2025-01-10 01:11:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902179079] [2025-01-10 01:11:48,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:48,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 01:11:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:48,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 01:11:48,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2025-01-10 01:11:48,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:48,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 407 transitions, 6163 flow. Second operand has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 01:11:48,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:48,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:48,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:49,826 INFO L124 PetriNetUnfolderBase]: 2716/4545 cut-off events. [2025-01-10 01:11:49,826 INFO L125 PetriNetUnfolderBase]: For 63626/63626 co-relation queries the response was YES. [2025-01-10 01:11:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32275 conditions, 4545 events. 2716/4545 cut-off events. For 63626/63626 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25844 event pairs, 20 based on Foata normal form. 106/4651 useless extension candidates. Maximal degree in co-relation 31227. Up to 841 conditions per place. [2025-01-10 01:11:49,861 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 285 selfloop transitions, 570 changer transitions 3/859 dead transitions. [2025-01-10 01:11:49,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 859 transitions, 13623 flow [2025-01-10 01:11:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-10 01:11:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2025-01-10 01:11:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 458 transitions. [2025-01-10 01:11:49,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40638864241348716 [2025-01-10 01:11:49,869 INFO L175 Difference]: Start difference. First operand has 162 places, 407 transitions, 6163 flow. Second operand 49 states and 458 transitions. [2025-01-10 01:11:49,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 859 transitions, 13623 flow [2025-01-10 01:11:50,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 859 transitions, 13324 flow, removed 101 selfloop flow, removed 3 redundant places. [2025-01-10 01:11:50,124 INFO L231 Difference]: Finished difference. Result has 233 places, 688 transitions, 12142 flow [2025-01-10 01:11:50,125 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5956, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=12142, PETRI_PLACES=233, PETRI_TRANSITIONS=688} [2025-01-10 01:11:50,126 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 208 predicate places. [2025-01-10 01:11:50,126 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 688 transitions, 12142 flow [2025-01-10 01:11:50,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.315789473684211) internal successors, (120), 19 states have internal predecessors, (120), 0 states have call successors, (0), 0 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 01:11:50,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:50,126 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:50,132 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 01:11:50,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:50,327 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:50,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1575910750, now seen corresponding path program 8 times [2025-01-10 01:11:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:50,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991707363] [2025-01-10 01:11:50,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:11:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:50,333 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:50,341 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:50,341 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:50,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:50,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991707363] [2025-01-10 01:11:50,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991707363] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:50,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331531740] [2025-01-10 01:11:50,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:11:50,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:50,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:50,453 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 01:11:50,457 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 01:11:50,483 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:50,493 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:50,493 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:50,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:50,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:11:50,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:50,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:50,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331531740] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:50,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:50,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2025-01-10 01:11:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113776182] [2025-01-10 01:11:50,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:50,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 01:11:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:50,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 01:11:50,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2025-01-10 01:11:50,745 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:50,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 688 transitions, 12142 flow. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 01:11:50,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:50,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:50,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:52,235 INFO L124 PetriNetUnfolderBase]: 3019/5018 cut-off events. [2025-01-10 01:11:52,235 INFO L125 PetriNetUnfolderBase]: For 115656/115656 co-relation queries the response was YES. [2025-01-10 01:11:52,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43025 conditions, 5018 events. 3019/5018 cut-off events. For 115656/115656 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29025 event pairs, 37 based on Foata normal form. 38/5056 useless extension candidates. Maximal degree in co-relation 41791. Up to 938 conditions per place. [2025-01-10 01:11:52,285 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 406 selfloop transitions, 529 changer transitions 6/942 dead transitions. [2025-01-10 01:11:52,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 942 transitions, 18061 flow [2025-01-10 01:11:52,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 01:11:52,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-01-10 01:11:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 295 transitions. [2025-01-10 01:11:52,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38866930171277997 [2025-01-10 01:11:52,290 INFO L175 Difference]: Start difference. First operand has 233 places, 688 transitions, 12142 flow. Second operand 33 states and 295 transitions. [2025-01-10 01:11:52,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 942 transitions, 18061 flow [2025-01-10 01:11:52,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 942 transitions, 17460 flow, removed 241 selfloop flow, removed 6 redundant places. [2025-01-10 01:11:52,862 INFO L231 Difference]: Finished difference. Result has 272 places, 807 transitions, 15269 flow [2025-01-10 01:11:52,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=11643, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15269, PETRI_PLACES=272, PETRI_TRANSITIONS=807} [2025-01-10 01:11:52,864 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 247 predicate places. [2025-01-10 01:11:52,865 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 807 transitions, 15269 flow [2025-01-10 01:11:52,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 21 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 01:11:52,865 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:52,865 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:52,872 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 01:11:53,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:53,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:53,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 317480354, now seen corresponding path program 9 times [2025-01-10 01:11:53,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:53,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840552209] [2025-01-10 01:11:53,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:11:53,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:53,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:53,075 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:53,077 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:11:53,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:53,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840552209] [2025-01-10 01:11:53,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840552209] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:53,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103050139] [2025-01-10 01:11:53,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:11:53,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:53,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:53,206 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 01:11:53,208 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 01:11:53,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:53,240 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:53,240 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-10 01:11:53,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:53,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:11:53,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:53,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:53,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103050139] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:53,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:11:53,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2025-01-10 01:11:53,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639475927] [2025-01-10 01:11:53,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:11:53,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:11:53,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:53,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:11:53,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:11:53,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:53,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 807 transitions, 15269 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 01:11:53,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:53,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:53,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:54,658 INFO L124 PetriNetUnfolderBase]: 3140/5220 cut-off events. [2025-01-10 01:11:54,659 INFO L125 PetriNetUnfolderBase]: For 133612/133612 co-relation queries the response was YES. [2025-01-10 01:11:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47479 conditions, 5220 events. 3140/5220 cut-off events. For 133612/133612 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30735 event pairs, 116 based on Foata normal form. 3/5223 useless extension candidates. Maximal degree in co-relation 46449. Up to 2129 conditions per place. [2025-01-10 01:11:54,735 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 348 selfloop transitions, 536 changer transitions 0/885 dead transitions. [2025-01-10 01:11:54,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 885 transitions, 18284 flow [2025-01-10 01:11:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 01:11:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 01:11:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2025-01-10 01:11:54,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2025-01-10 01:11:54,736 INFO L175 Difference]: Start difference. First operand has 272 places, 807 transitions, 15269 flow. Second operand 11 states and 110 transitions. [2025-01-10 01:11:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 885 transitions, 18284 flow [2025-01-10 01:11:55,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 885 transitions, 18172 flow, removed 30 selfloop flow, removed 9 redundant places. [2025-01-10 01:11:55,664 INFO L231 Difference]: Finished difference. Result has 275 places, 833 transitions, 17479 flow [2025-01-10 01:11:55,665 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=15160, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=512, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17479, PETRI_PLACES=275, PETRI_TRANSITIONS=833} [2025-01-10 01:11:55,665 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 250 predicate places. [2025-01-10 01:11:55,665 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 833 transitions, 17479 flow [2025-01-10 01:11:55,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 01:11:55,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:55,665 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:55,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-10 01:11:55,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:55,866 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:55,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1324612552, now seen corresponding path program 10 times [2025-01-10 01:11:55,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:55,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097050405] [2025-01-10 01:11:55,867 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:11:55,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:55,869 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:55,871 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-01-10 01:11:55,871 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:11:55,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:55,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097050405] [2025-01-10 01:11:55,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097050405] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:11:55,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357397192] [2025-01-10 01:11:55,925 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:11:55,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:11:55,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:11:55,929 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 01:11:55,930 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 01:11:55,957 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:55,963 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-01-10 01:11:55,963 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:11:55,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:55,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 01:11:55,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:11:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:56,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:11:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:56,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357397192] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:11:56,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:11:56,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2025-01-10 01:11:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262356097] [2025-01-10 01:11:56,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:11:56,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:11:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:56,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:11:56,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:11:56,061 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:56,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 833 transitions, 17479 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 01:11:56,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:56,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:56,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:57,186 INFO L124 PetriNetUnfolderBase]: 3137/5219 cut-off events. [2025-01-10 01:11:57,186 INFO L125 PetriNetUnfolderBase]: For 163150/163150 co-relation queries the response was YES. [2025-01-10 01:11:57,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50850 conditions, 5219 events. 3137/5219 cut-off events. For 163150/163150 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 30847 event pairs, 200 based on Foata normal form. 16/5235 useless extension candidates. Maximal degree in co-relation 49508. Up to 1083 conditions per place. [2025-01-10 01:11:57,237 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 495 selfloop transitions, 415 changer transitions 4/915 dead transitions. [2025-01-10 01:11:57,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 915 transitions, 20751 flow [2025-01-10 01:11:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 01:11:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 01:11:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2025-01-10 01:11:57,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47035573122529645 [2025-01-10 01:11:57,238 INFO L175 Difference]: Start difference. First operand has 275 places, 833 transitions, 17479 flow. Second operand 11 states and 119 transitions. [2025-01-10 01:11:57,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 915 transitions, 20751 flow [2025-01-10 01:11:58,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 915 transitions, 20578 flow, removed 82 selfloop flow, removed 2 redundant places. [2025-01-10 01:11:58,375 INFO L231 Difference]: Finished difference. Result has 284 places, 834 transitions, 18546 flow [2025-01-10 01:11:58,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=17161, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=404, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18546, PETRI_PLACES=284, PETRI_TRANSITIONS=834} [2025-01-10 01:11:58,376 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 259 predicate places. [2025-01-10 01:11:58,376 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 834 transitions, 18546 flow [2025-01-10 01:11:58,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 01:11:58,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:11:58,376 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:11:58,382 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 01:11:58,577 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,SelfDestructingSolverStorable11 [2025-01-10 01:11:58,577 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:11:58,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:11:58,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1558795196, now seen corresponding path program 11 times [2025-01-10 01:11:58,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:11:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78991669] [2025-01-10 01:11:58,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:11:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:11:58,586 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:11:58,588 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:11:58,589 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:11:58,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:11:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:11:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:11:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78991669] [2025-01-10 01:11:58,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78991669] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:11:58,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:11:58,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 01:11:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659222481] [2025-01-10 01:11:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:11:58,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:11:58,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:11:58,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:11:58,665 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:11:58,665 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:11:58,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 834 transitions, 18546 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 01:11:58,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:11:58,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:11:58,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:11:59,949 INFO L124 PetriNetUnfolderBase]: 3217/5327 cut-off events. [2025-01-10 01:11:59,949 INFO L125 PetriNetUnfolderBase]: For 167627/167627 co-relation queries the response was YES. [2025-01-10 01:11:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53428 conditions, 5327 events. 3217/5327 cut-off events. For 167627/167627 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31204 event pairs, 115 based on Foata normal form. 8/5335 useless extension candidates. Maximal degree in co-relation 52841. Up to 4375 conditions per place. [2025-01-10 01:12:00,014 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 820 selfloop transitions, 102 changer transitions 3/926 dead transitions. [2025-01-10 01:12:00,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 926 transitions, 21910 flow [2025-01-10 01:12:00,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:12:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:12:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2025-01-10 01:12:00,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2025-01-10 01:12:00,015 INFO L175 Difference]: Start difference. First operand has 284 places, 834 transitions, 18546 flow. Second operand 9 states and 95 transitions. [2025-01-10 01:12:00,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 926 transitions, 21910 flow [2025-01-10 01:12:01,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 926 transitions, 21161 flow, removed 24 selfloop flow, removed 9 redundant places. [2025-01-10 01:12:01,128 INFO L231 Difference]: Finished difference. Result has 284 places, 849 transitions, 18459 flow [2025-01-10 01:12:01,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=17815, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18459, PETRI_PLACES=284, PETRI_TRANSITIONS=849} [2025-01-10 01:12:01,129 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 259 predicate places. [2025-01-10 01:12:01,129 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 849 transitions, 18459 flow [2025-01-10 01:12:01,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 01:12:01,129 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:01,129 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:01,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-10 01:12:01,129 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2005555574, now seen corresponding path program 12 times [2025-01-10 01:12:01,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:01,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937053318] [2025-01-10 01:12:01,130 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:12:01,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:01,132 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:12:01,135 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:01,135 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:12:01,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:01,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937053318] [2025-01-10 01:12:01,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937053318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:01,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528474541] [2025-01-10 01:12:01,193 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:12:01,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:01,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:01,199 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 01:12:01,200 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 01:12:01,224 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:12:01,232 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:01,232 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2025-01-10 01:12:01,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:01,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:12:01,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:01,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:01,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528474541] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:12:01,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:12:01,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2025-01-10 01:12:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707829060] [2025-01-10 01:12:01,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:12:01,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-10 01:12:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:01,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-10 01:12:01,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-01-10 01:12:01,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:01,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 849 transitions, 18459 flow. Second operand has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 01:12:01,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:01,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:01,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:02,822 INFO L124 PetriNetUnfolderBase]: 3481/5787 cut-off events. [2025-01-10 01:12:02,822 INFO L125 PetriNetUnfolderBase]: For 179483/179483 co-relation queries the response was YES. [2025-01-10 01:12:02,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57753 conditions, 5787 events. 3481/5787 cut-off events. For 179483/179483 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 34825 event pairs, 619 based on Foata normal form. 56/5843 useless extension candidates. Maximal degree in co-relation 56346. Up to 2924 conditions per place. [2025-01-10 01:12:02,888 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 608 selfloop transitions, 393 changer transitions 0/1002 dead transitions. [2025-01-10 01:12:02,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 1002 transitions, 23077 flow [2025-01-10 01:12:02,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-10 01:12:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-01-10 01:12:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 193 transitions. [2025-01-10 01:12:02,890 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4416475972540046 [2025-01-10 01:12:02,890 INFO L175 Difference]: Start difference. First operand has 284 places, 849 transitions, 18459 flow. Second operand 19 states and 193 transitions. [2025-01-10 01:12:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 1002 transitions, 23077 flow [2025-01-10 01:12:04,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1002 transitions, 22988 flow, removed 13 selfloop flow, removed 4 redundant places. [2025-01-10 01:12:04,478 INFO L231 Difference]: Finished difference. Result has 310 places, 913 transitions, 21348 flow [2025-01-10 01:12:04,479 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=18381, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=338, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=21348, PETRI_PLACES=310, PETRI_TRANSITIONS=913} [2025-01-10 01:12:04,479 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 285 predicate places. [2025-01-10 01:12:04,480 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 913 transitions, 21348 flow [2025-01-10 01:12:04,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.473684210526316) internal successors, (123), 19 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 01:12:04,480 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:04,480 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:04,488 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 01:12:04,680 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 01:12:04,681 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:04,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1956247710, now seen corresponding path program 13 times [2025-01-10 01:12:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752214614] [2025-01-10 01:12:04,682 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:12:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:04,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-10 01:12:04,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:04,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:12:04,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:04,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:04,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:04,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752214614] [2025-01-10 01:12:04,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752214614] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:12:04,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:12:04,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-01-10 01:12:04,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982934153] [2025-01-10 01:12:04,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:12:04,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-10 01:12:04,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:04,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-10 01:12:04,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-01-10 01:12:04,790 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:04,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 913 transitions, 21348 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 01:12:04,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:04,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:04,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:06,236 INFO L124 PetriNetUnfolderBase]: 3489/5803 cut-off events. [2025-01-10 01:12:06,236 INFO L125 PetriNetUnfolderBase]: For 228171/228171 co-relation queries the response was YES. [2025-01-10 01:12:06,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62995 conditions, 5803 events. 3489/5803 cut-off events. For 228171/228171 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 34855 event pairs, 159 based on Foata normal form. 2/5805 useless extension candidates. Maximal degree in co-relation 62225. Up to 5635 conditions per place. [2025-01-10 01:12:06,294 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 904 selfloop transitions, 25 changer transitions 4/934 dead transitions. [2025-01-10 01:12:06,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 934 transitions, 23528 flow [2025-01-10 01:12:06,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 01:12:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-01-10 01:12:06,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2025-01-10 01:12:06,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2025-01-10 01:12:06,302 INFO L175 Difference]: Start difference. First operand has 310 places, 913 transitions, 21348 flow. Second operand 9 states and 83 transitions. [2025-01-10 01:12:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 934 transitions, 23528 flow [2025-01-10 01:12:07,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 934 transitions, 23214 flow, removed 134 selfloop flow, removed 2 redundant places. [2025-01-10 01:12:07,731 INFO L231 Difference]: Finished difference. Result has 319 places, 916 transitions, 21162 flow [2025-01-10 01:12:07,731 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=21036, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=913, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=888, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21162, PETRI_PLACES=319, PETRI_TRANSITIONS=916} [2025-01-10 01:12:07,732 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 294 predicate places. [2025-01-10 01:12:07,732 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 916 transitions, 21162 flow [2025-01-10 01:12:07,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 01:12:07,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:07,732 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:07,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-01-10 01:12:07,732 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:07,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1512385874, now seen corresponding path program 14 times [2025-01-10 01:12:07,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:07,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465462514] [2025-01-10 01:12:07,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:12:07,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:07,736 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:12:07,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:07,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:12:07,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:07,798 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 01:12:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465462514] [2025-01-10 01:12:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465462514] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034793201] [2025-01-10 01:12:07,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:12:07,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:07,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:07,800 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 01:12:07,802 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 01:12:07,825 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:12:07,833 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:07,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:12:07,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:07,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:12:07,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:07,899 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 01:12:07,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:07,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034793201] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:07,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-01-10 01:12:07,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2025-01-10 01:12:07,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354244986] [2025-01-10 01:12:07,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:12:07,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-10 01:12:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:07,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-10 01:12:07,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2025-01-10 01:12:07,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:07,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 916 transitions, 21162 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 01:12:07,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:07,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:07,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:09,588 INFO L124 PetriNetUnfolderBase]: 3807/6336 cut-off events. [2025-01-10 01:12:09,588 INFO L125 PetriNetUnfolderBase]: For 237546/237546 co-relation queries the response was YES. [2025-01-10 01:12:09,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68234 conditions, 6336 events. 3807/6336 cut-off events. For 237546/237546 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 38918 event pairs, 630 based on Foata normal form. 24/6360 useless extension candidates. Maximal degree in co-relation 67395. Up to 3013 conditions per place. [2025-01-10 01:12:09,659 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 619 selfloop transitions, 457 changer transitions 0/1077 dead transitions. [2025-01-10 01:12:09,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1077 transitions, 26386 flow [2025-01-10 01:12:09,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-10 01:12:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-01-10 01:12:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2025-01-10 01:12:09,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49407114624505927 [2025-01-10 01:12:09,660 INFO L175 Difference]: Start difference. First operand has 319 places, 916 transitions, 21162 flow. Second operand 11 states and 125 transitions. [2025-01-10 01:12:09,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1077 transitions, 26386 flow [2025-01-10 01:12:11,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1077 transitions, 26326 flow, removed 6 selfloop flow, removed 6 redundant places. [2025-01-10 01:12:11,466 INFO L231 Difference]: Finished difference. Result has 328 places, 983 transitions, 24525 flow [2025-01-10 01:12:11,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=21121, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24525, PETRI_PLACES=328, PETRI_TRANSITIONS=983} [2025-01-10 01:12:11,467 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 303 predicate places. [2025-01-10 01:12:11,467 INFO L471 AbstractCegarLoop]: Abstraction has has 328 places, 983 transitions, 24525 flow [2025-01-10 01:12:11,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 01:12:11,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:11,467 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:11,473 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 01:12:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:11,668 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1378465450, now seen corresponding path program 15 times [2025-01-10 01:12:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587109982] [2025-01-10 01:12:11,668 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:12:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:11,671 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-10 01:12:11,673 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:11,673 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:12:11,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587109982] [2025-01-10 01:12:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587109982] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613729240] [2025-01-10 01:12:11,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 01:12:11,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:11,741 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 01:12:11,743 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 01:12:11,766 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 3 equivalence classes. [2025-01-10 01:12:11,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 21 of 21 statements. [2025-01-10 01:12:11,777 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-10 01:12:11,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:11,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 01:12:11,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:11,857 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:11,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613729240] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:12:11,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:12:11,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-10 01:12:11,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101545569] [2025-01-10 01:12:11,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:12:11,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-10 01:12:11,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:11,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-10 01:12:11,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2025-01-10 01:12:11,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:11,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 983 transitions, 24525 flow. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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 01:12:11,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:11,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:11,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:13,802 INFO L124 PetriNetUnfolderBase]: 3990/6663 cut-off events. [2025-01-10 01:12:13,803 INFO L125 PetriNetUnfolderBase]: For 295764/295764 co-relation queries the response was YES. [2025-01-10 01:12:13,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77245 conditions, 6663 events. 3990/6663 cut-off events. For 295764/295764 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 41063 event pairs, 768 based on Foata normal form. 12/6675 useless extension candidates. Maximal degree in co-relation 76226. Up to 3783 conditions per place. [2025-01-10 01:12:13,874 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 627 selfloop transitions, 502 changer transitions 2/1132 dead transitions. [2025-01-10 01:12:13,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1132 transitions, 30074 flow [2025-01-10 01:12:13,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-10 01:12:13,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-01-10 01:12:13,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 149 transitions. [2025-01-10 01:12:13,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318840579710145 [2025-01-10 01:12:13,875 INFO L175 Difference]: Start difference. First operand has 328 places, 983 transitions, 24525 flow. Second operand 15 states and 149 transitions. [2025-01-10 01:12:13,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1132 transitions, 30074 flow [2025-01-10 01:12:16,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 1132 transitions, 29772 flow, removed 151 selfloop flow, removed 0 redundant places. [2025-01-10 01:12:16,073 INFO L231 Difference]: Finished difference. Result has 349 places, 1046 transitions, 28246 flow [2025-01-10 01:12:16,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=24333, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=983, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=443, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=28246, PETRI_PLACES=349, PETRI_TRANSITIONS=1046} [2025-01-10 01:12:16,074 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 324 predicate places. [2025-01-10 01:12:16,074 INFO L471 AbstractCegarLoop]: Abstraction has has 349 places, 1046 transitions, 28246 flow [2025-01-10 01:12:16,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 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 01:12:16,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:16,074 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:16,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-10 01:12:16,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-10 01:12:16,275 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:16,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:16,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1548555640, now seen corresponding path program 16 times [2025-01-10 01:12:16,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:16,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216283456] [2025-01-10 01:12:16,276 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-10 01:12:16,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:16,278 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 21 statements into 2 equivalence classes. [2025-01-10 01:12:16,280 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 20 of 21 statements. [2025-01-10 01:12:16,280 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-10 01:12:16,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:16,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:16,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216283456] [2025-01-10 01:12:16,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216283456] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:12:16,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:12:16,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-10 01:12:16,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028414830] [2025-01-10 01:12:16,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:12:16,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-10 01:12:16,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:16,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 01:12:16,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 01:12:16,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:16,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1046 transitions, 28246 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 01:12:16,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:16,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:16,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:18,214 INFO L124 PetriNetUnfolderBase]: 3996/6685 cut-off events. [2025-01-10 01:12:18,214 INFO L125 PetriNetUnfolderBase]: For 358875/358875 co-relation queries the response was YES. [2025-01-10 01:12:18,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81568 conditions, 6685 events. 3996/6685 cut-off events. For 358875/358875 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 41506 event pairs, 1099 based on Foata normal form. 14/6699 useless extension candidates. Maximal degree in co-relation 81431. Up to 5241 conditions per place. [2025-01-10 01:12:18,284 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 950 selfloop transitions, 141 changer transitions 0/1092 dead transitions. [2025-01-10 01:12:18,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1092 transitions, 31413 flow [2025-01-10 01:12:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:12:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:12:18,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2025-01-10 01:12:18,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2025-01-10 01:12:18,285 INFO L175 Difference]: Start difference. First operand has 349 places, 1046 transitions, 28246 flow. Second operand 7 states and 80 transitions. [2025-01-10 01:12:18,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1092 transitions, 31413 flow [2025-01-10 01:12:20,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 1092 transitions, 31158 flow, removed 78 selfloop flow, removed 6 redundant places. [2025-01-10 01:12:20,796 INFO L231 Difference]: Finished difference. Result has 350 places, 1055 transitions, 28682 flow [2025-01-10 01:12:20,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28041, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=910, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28682, PETRI_PLACES=350, PETRI_TRANSITIONS=1055} [2025-01-10 01:12:20,798 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 325 predicate places. [2025-01-10 01:12:20,798 INFO L471 AbstractCegarLoop]: Abstraction has has 350 places, 1055 transitions, 28682 flow [2025-01-10 01:12:20,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 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 01:12:20,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:20,801 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:20,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-01-10 01:12:20,802 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:20,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:20,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1864776758, now seen corresponding path program 17 times [2025-01-10 01:12:20,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:20,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267526260] [2025-01-10 01:12:20,803 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:12:20,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:20,811 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-01-10 01:12:20,821 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:20,821 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:12:20,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:20,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267526260] [2025-01-10 01:12:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267526260] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758513469] [2025-01-10 01:12:20,935 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-10 01:12:20,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:20,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:20,937 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 01:12:20,939 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 01:12:20,962 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-01-10 01:12:20,971 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:20,972 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-10 01:12:20,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:20,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 01:12:20,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:21,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:21,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758513469] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:12:21,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:12:21,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6] total 10 [2025-01-10 01:12:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720838785] [2025-01-10 01:12:21,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:12:21,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-10 01:12:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:21,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 01:12:21,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-10 01:12:21,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 01:12:21,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1055 transitions, 28682 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:12:21,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:21,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 01:12:21,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:25,034 INFO L124 PetriNetUnfolderBase]: 7247/12531 cut-off events. [2025-01-10 01:12:25,035 INFO L125 PetriNetUnfolderBase]: For 681889/681936 co-relation queries the response was YES. [2025-01-10 01:12:25,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155503 conditions, 12531 events. 7247/12531 cut-off events. For 681889/681936 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 90427 event pairs, 318 based on Foata normal form. 11/12514 useless extension candidates. Maximal degree in co-relation 152899. Up to 2998 conditions per place. [2025-01-10 01:12:25,191 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 1210 selfloop transitions, 1035 changer transitions 200/2510 dead transitions. [2025-01-10 01:12:25,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 2510 transitions, 74762 flow [2025-01-10 01:12:25,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-10 01:12:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-01-10 01:12:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2025-01-10 01:12:25,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6141304347826086 [2025-01-10 01:12:25,192 INFO L175 Difference]: Start difference. First operand has 350 places, 1055 transitions, 28682 flow. Second operand 8 states and 113 transitions. [2025-01-10 01:12:25,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 2510 transitions, 74762 flow [2025-01-10 01:12:32,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 2510 transitions, 74188 flow, removed 36 selfloop flow, removed 4 redundant places. [2025-01-10 01:12:32,146 INFO L231 Difference]: Finished difference. Result has 358 places, 1762 transitions, 56038 flow [2025-01-10 01:12:32,147 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=28449, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=476, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=56038, PETRI_PLACES=358, PETRI_TRANSITIONS=1762} [2025-01-10 01:12:32,147 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 333 predicate places. [2025-01-10 01:12:32,147 INFO L471 AbstractCegarLoop]: Abstraction has has 358 places, 1762 transitions, 56038 flow [2025-01-10 01:12:32,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:12:32,148 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:32,148 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:32,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-10 01:12:32,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:32,348 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:32,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash -766219860, now seen corresponding path program 18 times [2025-01-10 01:12:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772718651] [2025-01-10 01:12:32,349 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:12:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:32,352 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-01-10 01:12:32,355 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:32,355 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-10 01:12:32,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:32,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772718651] [2025-01-10 01:12:32,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772718651] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817632517] [2025-01-10 01:12:32,393 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-10 01:12:32,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:32,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:32,395 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 01:12:32,399 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 01:12:32,423 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 23 statements into 3 equivalence classes. [2025-01-10 01:12:32,431 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:32,431 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-10 01:12:32,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:32,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-10 01:12:32,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:32,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:32,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817632517] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:12:32,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:12:32,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2025-01-10 01:12:32,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389694609] [2025-01-10 01:12:32,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:12:32,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-10 01:12:32,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:32,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-10 01:12:32,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-01-10 01:12:32,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-01-10 01:12:32,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 1762 transitions, 56038 flow. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:12:32,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:32,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-01-10 01:12:32,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:37,735 INFO L124 PetriNetUnfolderBase]: 7184/12499 cut-off events. [2025-01-10 01:12:37,736 INFO L125 PetriNetUnfolderBase]: For 753372/753411 co-relation queries the response was YES. [2025-01-10 01:12:37,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162440 conditions, 12499 events. 7184/12499 cut-off events. For 753372/753411 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 90878 event pairs, 189 based on Foata normal form. 62/12535 useless extension candidates. Maximal degree in co-relation 160116. Up to 4879 conditions per place. [2025-01-10 01:12:37,909 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 856 selfloop transitions, 1092 changer transitions 74/2087 dead transitions. [2025-01-10 01:12:37,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 2087 transitions, 68193 flow [2025-01-10 01:12:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-10 01:12:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-01-10 01:12:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2025-01-10 01:12:37,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2025-01-10 01:12:37,910 INFO L175 Difference]: Start difference. First operand has 358 places, 1762 transitions, 56038 flow. Second operand 7 states and 98 transitions. [2025-01-10 01:12:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 2087 transitions, 68193 flow [2025-01-10 01:12:45,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 2087 transitions, 67411 flow, removed 303 selfloop flow, removed 1 redundant places. [2025-01-10 01:12:45,588 INFO L231 Difference]: Finished difference. Result has 368 places, 1854 transitions, 62838 flow [2025-01-10 01:12:45,589 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=55260, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=724, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62838, PETRI_PLACES=368, PETRI_TRANSITIONS=1854} [2025-01-10 01:12:45,589 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 343 predicate places. [2025-01-10 01:12:45,589 INFO L471 AbstractCegarLoop]: Abstraction has has 368 places, 1854 transitions, 62838 flow [2025-01-10 01:12:45,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 01:12:45,590 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:12:45,590 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:12:45,597 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 01:12:45,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:45,791 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:12:45,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:12:45,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2109364534, now seen corresponding path program 19 times [2025-01-10 01:12:45,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:12:45,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077958403] [2025-01-10 01:12:45,792 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:12:45,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:12:45,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 01:12:45,799 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:45,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:12:45,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:12:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:12:45,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077958403] [2025-01-10 01:12:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077958403] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:12:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625379803] [2025-01-10 01:12:45,879 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-10 01:12:45,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:12:45,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:12:45,881 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 01:12:45,885 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 01:12:45,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-10 01:12:45,915 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:12:45,915 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:12:45,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:12:45,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-10 01:12:45,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:12:45,992 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-10 01:12:45,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:12:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 01:12:46,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625379803] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:12:46,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:12:46,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2025-01-10 01:12:46,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523637187] [2025-01-10 01:12:46,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:12:46,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-10 01:12:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:12:46,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 01:12:46,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2025-01-10 01:12:46,110 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:12:46,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1854 transitions, 62838 flow. Second operand has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 21 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 01:12:46,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:12:46,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:12:46,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:12:56,563 INFO L124 PetriNetUnfolderBase]: 12201/20252 cut-off events. [2025-01-10 01:12:56,564 INFO L125 PetriNetUnfolderBase]: For 1304772/1304772 co-relation queries the response was YES. [2025-01-10 01:12:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273560 conditions, 20252 events. 12201/20252 cut-off events. For 1304772/1304772 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 145691 event pairs, 100 based on Foata normal form. 133/20385 useless extension candidates. Maximal degree in co-relation 271101. Up to 6609 conditions per place. [2025-01-10 01:12:57,042 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 1056 selfloop transitions, 2030 changer transitions 0/3087 dead transitions. [2025-01-10 01:12:57,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 3087 transitions, 107763 flow [2025-01-10 01:12:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-10 01:12:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2025-01-10 01:12:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 324 transitions. [2025-01-10 01:12:57,043 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2025-01-10 01:12:57,043 INFO L175 Difference]: Start difference. First operand has 368 places, 1854 transitions, 62838 flow. Second operand 33 states and 324 transitions. [2025-01-10 01:12:57,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 3087 transitions, 107763 flow [2025-01-10 01:13:13,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 3087 transitions, 106458 flow, removed 253 selfloop flow, removed 4 redundant places. [2025-01-10 01:13:13,139 INFO L231 Difference]: Finished difference. Result has 417 places, 2750 transitions, 100968 flow [2025-01-10 01:13:13,140 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=61860, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=100968, PETRI_PLACES=417, PETRI_TRANSITIONS=2750} [2025-01-10 01:13:13,141 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 392 predicate places. [2025-01-10 01:13:13,141 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 2750 transitions, 100968 flow [2025-01-10 01:13:13,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.285714285714286) internal successors, (132), 21 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 01:13:13,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:13:13,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:13:13,146 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 01:13:13,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:13:13,342 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-01-10 01:13:13,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:13:13,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1075866444, now seen corresponding path program 20 times [2025-01-10 01:13:13,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:13:13,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326797133] [2025-01-10 01:13:13,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:13:13,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:13:13,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-10 01:13:13,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:13:13,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:13:13,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:13:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:13:13,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:13:13,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326797133] [2025-01-10 01:13:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326797133] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 01:13:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026448618] [2025-01-10 01:13:13,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 01:13:13,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:13:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:13:13,405 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 01:13:13,409 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 01:13:13,429 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-10 01:13:13,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-10 01:13:13,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 01:13:13,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:13:13,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-10 01:13:13,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:13:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:13:13,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 01:13:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:13:13,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026448618] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 01:13:13,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 01:13:13,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2025-01-10 01:13:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057773489] [2025-01-10 01:13:13,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 01:13:13,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-10 01:13:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:13:13,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-10 01:13:13,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2025-01-10 01:13:13,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2025-01-10 01:13:13,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 2750 transitions, 100968 flow. Second operand has 22 states, 22 states have (on average 6.318181818181818) internal successors, (139), 22 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 01:13:13,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:13:13,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2025-01-10 01:13:13,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand