./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-figure1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/weaver/popl20-figure1.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) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-figure1.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 facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:34:12,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:34:12,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:34:12,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:34:12,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:34:12,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:34:12,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:34:12,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:34:12,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:34:12,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:34:12,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:34:12,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:34:12,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:34:12,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:34:12,622 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:34:12,623 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:34:12,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:34:12,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:34:12,624 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:34:12,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:34:12,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:34:12,624 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 -> facd7612076746f2d167aef7303c13ba7b66236eba7a99773acf1e3861338848 [2024-11-07 19:34:12,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:34:12,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:34:12,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:34:12,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:34:12,934 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:34:12,935 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-07 19:34:14,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:34:14,485 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:34:14,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1.wvr.c [2024-11-07 19:34:14,498 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/479300885/7d8f6d07e0de49bc9a54a4690cdec083/FLAG571729af9 [2024-11-07 19:34:14,803 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/479300885/7d8f6d07e0de49bc9a54a4690cdec083 [2024-11-07 19:34:14,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:34:14,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:34:14,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:34:14,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:34:14,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:34:14,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:34:14" (1/1) ... [2024-11-07 19:34:14,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b69ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:14, skipping insertion in model container [2024-11-07 19:34:14,818 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:34:14" (1/1) ... [2024-11-07 19:34:14,834 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:34:14,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:34:14,993 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:34:15,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:34:15,022 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:34:15,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15 WrapperNode [2024-11-07 19:34:15,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:34:15,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:34:15,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:34:15,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:34:15,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,035 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,047 INFO L138 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 59 [2024-11-07 19:34:15,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:34:15,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:34:15,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:34:15,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:34:15,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,056 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,067 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]. [2024-11-07 19:34:15,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:34:15,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:34:15,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:34:15,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:34:15,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (1/1) ... [2024-11-07 19:34:15,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:34:15,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:15,113 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) [2024-11-07 19:34:15,116 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 [2024-11-07 19:34:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:34:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:34:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:34:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:34:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:34:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:34:15,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:34:15,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:34:15,139 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-07 19:34:15,204 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:34:15,206 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:34:15,323 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:34:15,324 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:34:15,418 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:34:15,418 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:34:15,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:15 BoogieIcfgContainer [2024-11-07 19:34:15,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:34:15,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:34:15,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:34:15,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:34:15,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:34:14" (1/3) ... [2024-11-07 19:34:15,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f865a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:15, skipping insertion in model container [2024-11-07 19:34:15,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:34:15" (2/3) ... [2024-11-07 19:34:15,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f865a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:34:15, skipping insertion in model container [2024-11-07 19:34:15,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:34:15" (3/3) ... [2024-11-07 19:34:15,430 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2024-11-07 19:34:15,445 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:34:15,446 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:34:15,446 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:34:15,492 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:34:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2024-11-07 19:34:15,578 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2024-11-07 19:34:15,579 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:34:15,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2024-11-07 19:34:15,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2024-11-07 19:34:15,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 54 flow [2024-11-07 19:34:15,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:34:15,615 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;@1d1b77fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:34:15,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:34:15,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:34:15,632 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-07 19:34:15,632 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:34:15,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:15,633 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:15,633 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)] === [2024-11-07 19:34:15,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1133802136, now seen corresponding path program 1 times [2024-11-07 19:34:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:15,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674149852] [2024-11-07 19:34:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:15,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:15,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:15,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674149852] [2024-11-07 19:34:15,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674149852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:15,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:15,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:34:15,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469229438] [2024-11-07 19:34:15,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:15,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:34:15,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:34:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:34:15,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 19:34:15,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-07 19:34:15,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:15,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 19:34:15,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:15,980 INFO L124 PetriNetUnfolderBase]: 86/169 cut-off events. [2024-11-07 19:34:15,981 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-07 19:34:15,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 169 events. 86/169 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 32 based on Foata normal form. 2/163 useless extension candidates. Maximal degree in co-relation 298. Up to 108 conditions per place. [2024-11-07 19:34:15,985 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 21 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-07 19:34:15,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 129 flow [2024-11-07 19:34:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:34:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:34:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-07 19:34:15,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-07 19:34:16,001 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 3 states and 44 transitions. [2024-11-07 19:34:16,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 129 flow [2024-11-07 19:34:16,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:34:16,007 INFO L231 Difference]: Finished difference. Result has 23 places, 20 transitions, 56 flow [2024-11-07 19:34:16,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2024-11-07 19:34:16,014 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -3 predicate places. [2024-11-07 19:34:16,014 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 56 flow [2024-11-07 19:34:16,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2024-11-07 19:34:16,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:16,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:16,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:34:16,016 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)] === [2024-11-07 19:34:16,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:16,016 INFO L85 PathProgramCache]: Analyzing trace with hash 930867415, now seen corresponding path program 1 times [2024-11-07 19:34:16,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:16,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287764803] [2024-11-07 19:34:16,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:16,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:16,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287764803] [2024-11-07 19:34:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287764803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:16,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:34:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293808446] [2024-11-07 19:34:16,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:16,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:34:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:16,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:34:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:34:16,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:16,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:16,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:16,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:16,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:16,375 INFO L124 PetriNetUnfolderBase]: 152/271 cut-off events. [2024-11-07 19:34:16,376 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-07 19:34:16,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608 conditions, 271 events. 152/271 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 956 event pairs, 59 based on Foata normal form. 4/253 useless extension candidates. Maximal degree in co-relation 179. Up to 185 conditions per place. [2024-11-07 19:34:16,378 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 32 selfloop transitions, 9 changer transitions 2/44 dead transitions. [2024-11-07 19:34:16,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 44 transitions, 203 flow [2024-11-07 19:34:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:34:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:34:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-07 19:34:16,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-11-07 19:34:16,379 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 56 flow. Second operand 5 states and 64 transitions. [2024-11-07 19:34:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 44 transitions, 203 flow [2024-11-07 19:34:16,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 44 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:34:16,381 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 122 flow [2024-11-07 19:34:16,381 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2024-11-07 19:34:16,381 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-11-07 19:34:16,381 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 122 flow [2024-11-07 19:34:16,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:16,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:16,382 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:16,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:34:16,382 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)] === [2024-11-07 19:34:16,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -337367831, now seen corresponding path program 2 times [2024-11-07 19:34:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:16,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851693769] [2024-11-07 19:34:16,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:16,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:16,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:16,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851693769] [2024-11-07 19:34:16,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851693769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:16,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:16,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:34:16,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781926985] [2024-11-07 19:34:16,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:16,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:34:16,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:16,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:34:16,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:34:16,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:16,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-11-07 19:34:16,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:16,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:16,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:16,705 INFO L124 PetriNetUnfolderBase]: 180/318 cut-off events. [2024-11-07 19:34:16,706 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-07 19:34:16,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 318 events. 180/318 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1139 event pairs, 2 based on Foata normal form. 13/331 useless extension candidates. Maximal degree in co-relation 643. Up to 146 conditions per place. [2024-11-07 19:34:16,710 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 48 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-11-07 19:34:16,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 359 flow [2024-11-07 19:34:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:34:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:34:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-07 19:34:16,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 19:34:16,712 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 122 flow. Second operand 7 states and 84 transitions. [2024-11-07 19:34:16,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 60 transitions, 359 flow [2024-11-07 19:34:16,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 357 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-07 19:34:16,717 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 206 flow [2024-11-07 19:34:16,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-07 19:34:16,717 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-11-07 19:34:16,718 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 206 flow [2024-11-07 19:34:16,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2024-11-07 19:34:16,718 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:16,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:16,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:34:16,718 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)] === [2024-11-07 19:34:16,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2085922199, now seen corresponding path program 3 times [2024-11-07 19:34:16,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:16,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011790166] [2024-11-07 19:34:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:16,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:16,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:16,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011790166] [2024-11-07 19:34:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011790166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:16,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:34:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916356227] [2024-11-07 19:34:16,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:16,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:34:16,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:16,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:34:16,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:34:16,806 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:16,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:16,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:16,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:16,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:16,938 INFO L124 PetriNetUnfolderBase]: 243/430 cut-off events. [2024-11-07 19:34:16,938 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-11-07 19:34:16,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 430 events. 243/430 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1559 event pairs, 86 based on Foata normal form. 2/432 useless extension candidates. Maximal degree in co-relation 980. Up to 194 conditions per place. [2024-11-07 19:34:16,945 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 48 selfloop transitions, 10 changer transitions 2/61 dead transitions. [2024-11-07 19:34:16,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 61 transitions, 463 flow [2024-11-07 19:34:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:34:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:34:16,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-07 19:34:16,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 19:34:16,947 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 206 flow. Second operand 5 states and 60 transitions. [2024-11-07 19:34:16,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 61 transitions, 463 flow [2024-11-07 19:34:16,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 458 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:34:16,954 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 257 flow [2024-11-07 19:34:16,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2024-11-07 19:34:16,955 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2024-11-07 19:34:16,955 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 257 flow [2024-11-07 19:34:16,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:16,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:16,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:16,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:34:16,956 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)] === [2024-11-07 19:34:16,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash 533352207, now seen corresponding path program 4 times [2024-11-07 19:34:16,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:16,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454488734] [2024-11-07 19:34:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:16,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454488734] [2024-11-07 19:34:17,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454488734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:17,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576652400] [2024-11-07 19:34:17,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:34:17,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:17,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:17,054 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) [2024-11-07 19:34:17,055 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 [2024-11-07 19:34:17,112 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:34:17,112 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:17,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:34:17,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:17,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576652400] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:17,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-07 19:34:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51734836] [2024-11-07 19:34:17,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:17,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:34:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:34:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:34:17,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:17,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 257 flow. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-07 19:34:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:17,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:17,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:17,595 INFO L124 PetriNetUnfolderBase]: 346/603 cut-off events. [2024-11-07 19:34:17,596 INFO L125 PetriNetUnfolderBase]: For 1334/1334 co-relation queries the response was YES. [2024-11-07 19:34:17,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2240 conditions, 603 events. 346/603 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2493 event pairs, 24 based on Foata normal form. 9/612 useless extension candidates. Maximal degree in co-relation 1940. Up to 180 conditions per place. [2024-11-07 19:34:17,601 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 70 selfloop transitions, 40 changer transitions 0/111 dead transitions. [2024-11-07 19:34:17,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 855 flow [2024-11-07 19:34:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:34:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 19:34:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-07 19:34:17,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-07 19:34:17,604 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 257 flow. Second operand 15 states and 159 transitions. [2024-11-07 19:34:17,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 855 flow [2024-11-07 19:34:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 811 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-11-07 19:34:17,615 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 549 flow [2024-11-07 19:34:17,615 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=549, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-07 19:34:17,618 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-11-07 19:34:17,618 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 549 flow [2024-11-07 19:34:17,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 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) [2024-11-07 19:34:17,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:17,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:17,636 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 [2024-11-07 19:34:17,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:17,819 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)] === [2024-11-07 19:34:17,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1764661423, now seen corresponding path program 5 times [2024-11-07 19:34:17,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:17,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068117243] [2024-11-07 19:34:17,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:17,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068117243] [2024-11-07 19:34:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068117243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142149870] [2024-11-07 19:34:17,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:34:17,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:17,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:17,917 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) [2024-11-07 19:34:17,918 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 [2024-11-07 19:34:17,967 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:34:17,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:17,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:34:17,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:18,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:18,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:18,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142149870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:18,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:18,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-07 19:34:18,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184600893] [2024-11-07 19:34:18,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:18,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:34:18,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:18,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:34:18,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:34:18,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:18,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 549 flow. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-07 19:34:18,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:18,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:18,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:18,301 INFO L124 PetriNetUnfolderBase]: 333/590 cut-off events. [2024-11-07 19:34:18,301 INFO L125 PetriNetUnfolderBase]: For 2559/2559 co-relation queries the response was YES. [2024-11-07 19:34:18,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 590 events. 333/590 cut-off events. For 2559/2559 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2481 event pairs, 66 based on Foata normal form. 13/603 useless extension candidates. Maximal degree in co-relation 2313. Up to 205 conditions per place. [2024-11-07 19:34:18,309 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 62 selfloop transitions, 36 changer transitions 1/100 dead transitions. [2024-11-07 19:34:18,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 100 transitions, 999 flow [2024-11-07 19:34:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:34:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:34:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-11-07 19:34:18,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-11-07 19:34:18,311 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 549 flow. Second operand 8 states and 94 transitions. [2024-11-07 19:34:18,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 100 transitions, 999 flow [2024-11-07 19:34:18,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 100 transitions, 925 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-11-07 19:34:18,323 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 718 flow [2024-11-07 19:34:18,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2024-11-07 19:34:18,323 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 47 predicate places. [2024-11-07 19:34:18,324 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 718 flow [2024-11-07 19:34:18,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 11 states have internal predecessors, (74), 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) [2024-11-07 19:34:18,324 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:18,324 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:18,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 19:34:18,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:18,529 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)] === [2024-11-07 19:34:18,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:18,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1753212447, now seen corresponding path program 6 times [2024-11-07 19:34:18,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:18,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373568529] [2024-11-07 19:34:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:18,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:18,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373568529] [2024-11-07 19:34:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373568529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:18,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:34:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537797985] [2024-11-07 19:34:18,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:18,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:34:18,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:18,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:34:18,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:34:18,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:18,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 718 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:18,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:18,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:18,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:18,746 INFO L124 PetriNetUnfolderBase]: 331/588 cut-off events. [2024-11-07 19:34:18,746 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2024-11-07 19:34:18,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2672 conditions, 588 events. 331/588 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2500 event pairs, 122 based on Foata normal form. 2/586 useless extension candidates. Maximal degree in co-relation 2374. Up to 492 conditions per place. [2024-11-07 19:34:18,753 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 64 selfloop transitions, 13 changer transitions 2/80 dead transitions. [2024-11-07 19:34:18,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 918 flow [2024-11-07 19:34:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:34:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:34:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 59 transitions. [2024-11-07 19:34:18,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-11-07 19:34:18,754 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 718 flow. Second operand 5 states and 59 transitions. [2024-11-07 19:34:18,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 918 flow [2024-11-07 19:34:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 837 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-07 19:34:18,766 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 655 flow [2024-11-07 19:34:18,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=655, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-07 19:34:18,767 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-07 19:34:18,767 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 655 flow [2024-11-07 19:34:18,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:18,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:18,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:18,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:34:18,767 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)] === [2024-11-07 19:34:18,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash -477607017, now seen corresponding path program 7 times [2024-11-07 19:34:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:18,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121561136] [2024-11-07 19:34:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121561136] [2024-11-07 19:34:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121561136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:34:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:34:18,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799046864] [2024-11-07 19:34:18,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:18,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:34:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:34:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:34:18,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:18,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 655 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:18,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:18,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:18,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:18,972 INFO L124 PetriNetUnfolderBase]: 322/561 cut-off events. [2024-11-07 19:34:18,972 INFO L125 PetriNetUnfolderBase]: For 2440/2440 co-relation queries the response was YES. [2024-11-07 19:34:18,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 561 events. 322/561 cut-off events. For 2440/2440 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2202 event pairs, 108 based on Foata normal form. 2/559 useless extension candidates. Maximal degree in co-relation 1863. Up to 322 conditions per place. [2024-11-07 19:34:18,978 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 56 selfloop transitions, 21 changer transitions 2/80 dead transitions. [2024-11-07 19:34:18,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 852 flow [2024-11-07 19:34:18,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:34:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:34:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2024-11-07 19:34:18,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-07 19:34:18,979 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 655 flow. Second operand 5 states and 58 transitions. [2024-11-07 19:34:18,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 852 flow [2024-11-07 19:34:18,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 80 transitions, 824 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-07 19:34:18,988 INFO L231 Difference]: Finished difference. Result has 72 places, 68 transitions, 663 flow [2024-11-07 19:34:18,988 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=663, PETRI_PLACES=72, PETRI_TRANSITIONS=68} [2024-11-07 19:34:18,988 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-11-07 19:34:18,988 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 68 transitions, 663 flow [2024-11-07 19:34:18,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-11-07 19:34:18,989 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:18,989 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:18,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:34:18,989 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)] === [2024-11-07 19:34:18,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -110425821, now seen corresponding path program 1 times [2024-11-07 19:34:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893685693] [2024-11-07 19:34:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:34:19,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893685693] [2024-11-07 19:34:19,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893685693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:19,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014184146] [2024-11-07 19:34:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:19,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:19,081 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) [2024-11-07 19:34:19,083 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 [2024-11-07 19:34:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:19,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:34:19,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:19,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:34:19,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014184146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:34:19,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:34:19,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 5 [2024-11-07 19:34:19,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125332326] [2024-11-07 19:34:19,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:34:19,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:34:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:19,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:34:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:34:19,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 19:34:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 19:34:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:19,365 INFO L124 PetriNetUnfolderBase]: 516/941 cut-off events. [2024-11-07 19:34:19,365 INFO L125 PetriNetUnfolderBase]: For 4688/4707 co-relation queries the response was YES. [2024-11-07 19:34:19,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 941 events. 516/941 cut-off events. For 4688/4707 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4464 event pairs, 94 based on Foata normal form. 12/946 useless extension candidates. Maximal degree in co-relation 3033. Up to 404 conditions per place. [2024-11-07 19:34:19,375 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 103 selfloop transitions, 5 changer transitions 18/133 dead transitions. [2024-11-07 19:34:19,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 133 transitions, 1521 flow [2024-11-07 19:34:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:34:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:34:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-11-07 19:34:19,376 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-07 19:34:19,376 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 663 flow. Second operand 4 states and 64 transitions. [2024-11-07 19:34:19,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 133 transitions, 1521 flow [2024-11-07 19:34:19,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 1431 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-07 19:34:19,392 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 627 flow [2024-11-07 19:34:19,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=627, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-11-07 19:34:19,392 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2024-11-07 19:34:19,393 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 627 flow [2024-11-07 19:34:19,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:19,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:19,393 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:19,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 19:34:19,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:19,594 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)] === [2024-11-07 19:34:19,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:19,594 INFO L85 PathProgramCache]: Analyzing trace with hash 623421192, now seen corresponding path program 2 times [2024-11-07 19:34:19,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:19,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258534724] [2024-11-07 19:34:19,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:19,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:19,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258534724] [2024-11-07 19:34:19,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258534724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:19,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183024840] [2024-11-07 19:34:19,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:34:19,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:19,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:19,695 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) [2024-11-07 19:34:19,696 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 [2024-11-07 19:34:19,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:34:19,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:19,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:19,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:19,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:34:19,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183024840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:19,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:19,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-07 19:34:19,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646656745] [2024-11-07 19:34:19,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:19,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:34:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:19,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:34:19,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:34:19,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:19,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 627 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:19,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:19,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:19,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:20,313 INFO L124 PetriNetUnfolderBase]: 1043/1724 cut-off events. [2024-11-07 19:34:20,313 INFO L125 PetriNetUnfolderBase]: For 7053/7053 co-relation queries the response was YES. [2024-11-07 19:34:20,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7734 conditions, 1724 events. 1043/1724 cut-off events. For 7053/7053 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7834 event pairs, 114 based on Foata normal form. 12/1718 useless extension candidates. Maximal degree in co-relation 6073. Up to 511 conditions per place. [2024-11-07 19:34:20,329 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 129 selfloop transitions, 53 changer transitions 3/186 dead transitions. [2024-11-07 19:34:20,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 186 transitions, 1794 flow [2024-11-07 19:34:20,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 19:34:20,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-07 19:34:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 170 transitions. [2024-11-07 19:34:20,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-11-07 19:34:20,330 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 627 flow. Second operand 14 states and 170 transitions. [2024-11-07 19:34:20,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 186 transitions, 1794 flow [2024-11-07 19:34:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 186 transitions, 1794 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:34:20,369 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 1024 flow [2024-11-07 19:34:20,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1024, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-11-07 19:34:20,371 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 63 predicate places. [2024-11-07 19:34:20,371 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 1024 flow [2024-11-07 19:34:20,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:20,372 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:20,373 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:20,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:34:20,573 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,SelfDestructingSolverStorable9 [2024-11-07 19:34:20,573 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)] === [2024-11-07 19:34:20,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 983359956, now seen corresponding path program 3 times [2024-11-07 19:34:20,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:20,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139778647] [2024-11-07 19:34:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:20,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139778647] [2024-11-07 19:34:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139778647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:20,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103544030] [2024-11-07 19:34:20,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:34:20,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:20,662 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) [2024-11-07 19:34:20,664 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 [2024-11-07 19:34:20,716 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 19:34:20,716 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:20,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:20,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:20,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:20,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103544030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:20,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:20,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 19:34:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140815779] [2024-11-07 19:34:20,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:20,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:34:20,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:20,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:34:20,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:34:20,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:20,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 1024 flow. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:20,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:20,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:20,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:21,398 INFO L124 PetriNetUnfolderBase]: 1445/2394 cut-off events. [2024-11-07 19:34:21,398 INFO L125 PetriNetUnfolderBase]: For 14996/14996 co-relation queries the response was YES. [2024-11-07 19:34:21,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12445 conditions, 2394 events. 1445/2394 cut-off events. For 14996/14996 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11662 event pairs, 134 based on Foata normal form. 18/2412 useless extension candidates. Maximal degree in co-relation 9709. Up to 777 conditions per place. [2024-11-07 19:34:21,421 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 123 selfloop transitions, 84 changer transitions 3/211 dead transitions. [2024-11-07 19:34:21,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 211 transitions, 2344 flow [2024-11-07 19:34:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 19:34:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 19:34:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 185 transitions. [2024-11-07 19:34:21,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-11-07 19:34:21,423 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 1024 flow. Second operand 17 states and 185 transitions. [2024-11-07 19:34:21,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 211 transitions, 2344 flow [2024-11-07 19:34:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 211 transitions, 2287 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-11-07 19:34:21,451 INFO L231 Difference]: Finished difference. Result has 109 places, 134 transitions, 1571 flow [2024-11-07 19:34:21,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1571, PETRI_PLACES=109, PETRI_TRANSITIONS=134} [2024-11-07 19:34:21,451 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 83 predicate places. [2024-11-07 19:34:21,451 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 134 transitions, 1571 flow [2024-11-07 19:34:21,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:21,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:21,452 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:21,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 19:34:21,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-07 19:34:21,652 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)] === [2024-11-07 19:34:21,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:21,653 INFO L85 PathProgramCache]: Analyzing trace with hash -88330000, now seen corresponding path program 4 times [2024-11-07 19:34:21,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:21,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246502695] [2024-11-07 19:34:21,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:21,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:21,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:21,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246502695] [2024-11-07 19:34:21,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246502695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:21,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093716548] [2024-11-07 19:34:21,755 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:34:21,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:21,757 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) [2024-11-07 19:34:21,760 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 [2024-11-07 19:34:21,815 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:34:21,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:21,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:21,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:21,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:21,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093716548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:21,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-07 19:34:21,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775548871] [2024-11-07 19:34:21,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:21,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:34:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:21,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:34:21,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:34:21,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:21,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 134 transitions, 1571 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-07 19:34:21,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:21,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:21,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:22,582 INFO L124 PetriNetUnfolderBase]: 1693/2801 cut-off events. [2024-11-07 19:34:22,582 INFO L125 PetriNetUnfolderBase]: For 28077/28077 co-relation queries the response was YES. [2024-11-07 19:34:22,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 2801 events. 1693/2801 cut-off events. For 28077/28077 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 14117 event pairs, 105 based on Foata normal form. 42/2843 useless extension candidates. Maximal degree in co-relation 15591. Up to 881 conditions per place. [2024-11-07 19:34:22,665 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 115 selfloop transitions, 114 changer transitions 31/261 dead transitions. [2024-11-07 19:34:22,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 261 transitions, 3267 flow [2024-11-07 19:34:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:34:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 19:34:22,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 159 transitions. [2024-11-07 19:34:22,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-11-07 19:34:22,667 INFO L175 Difference]: Start difference. First operand has 109 places, 134 transitions, 1571 flow. Second operand 15 states and 159 transitions. [2024-11-07 19:34:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 261 transitions, 3267 flow [2024-11-07 19:34:22,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 261 transitions, 2968 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-11-07 19:34:22,719 INFO L231 Difference]: Finished difference. Result has 127 places, 170 transitions, 2229 flow [2024-11-07 19:34:22,719 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2229, PETRI_PLACES=127, PETRI_TRANSITIONS=170} [2024-11-07 19:34:22,720 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 101 predicate places. [2024-11-07 19:34:22,721 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 170 transitions, 2229 flow [2024-11-07 19:34:22,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-11-07 19:34:22,721 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:22,721 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:22,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:34:22,925 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,SelfDestructingSolverStorable11 [2024-11-07 19:34:22,926 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)] === [2024-11-07 19:34:22,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1826760788, now seen corresponding path program 5 times [2024-11-07 19:34:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123403524] [2024-11-07 19:34:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:23,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:23,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123403524] [2024-11-07 19:34:23,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123403524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:23,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967282556] [2024-11-07 19:34:23,002 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:34:23,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:23,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:23,004 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) [2024-11-07 19:34:23,006 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 [2024-11-07 19:34:23,060 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 19:34:23,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:23,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:23,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:23,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:23,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967282556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:23,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:23,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-07 19:34:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788834763] [2024-11-07 19:34:23,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:23,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:34:23,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:23,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:34:23,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:34:23,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:23,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 170 transitions, 2229 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 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) [2024-11-07 19:34:23,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:23,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:23,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:23,990 INFO L124 PetriNetUnfolderBase]: 1917/3142 cut-off events. [2024-11-07 19:34:23,990 INFO L125 PetriNetUnfolderBase]: For 44863/44863 co-relation queries the response was YES. [2024-11-07 19:34:24,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19390 conditions, 3142 events. 1917/3142 cut-off events. For 44863/44863 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15998 event pairs, 82 based on Foata normal form. 92/3234 useless extension candidates. Maximal degree in co-relation 18573. Up to 1006 conditions per place. [2024-11-07 19:34:24,022 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 157 selfloop transitions, 161 changer transitions 3/322 dead transitions. [2024-11-07 19:34:24,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 322 transitions, 4274 flow [2024-11-07 19:34:24,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-07 19:34:24,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-07 19:34:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 277 transitions. [2024-11-07 19:34:24,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4439102564102564 [2024-11-07 19:34:24,025 INFO L175 Difference]: Start difference. First operand has 127 places, 170 transitions, 2229 flow. Second operand 26 states and 277 transitions. [2024-11-07 19:34:24,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 322 transitions, 4274 flow [2024-11-07 19:34:24,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 322 transitions, 4058 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-11-07 19:34:24,222 INFO L231 Difference]: Finished difference. Result has 163 places, 210 transitions, 3260 flow [2024-11-07 19:34:24,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3260, PETRI_PLACES=163, PETRI_TRANSITIONS=210} [2024-11-07 19:34:24,223 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 137 predicate places. [2024-11-07 19:34:24,223 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 210 transitions, 3260 flow [2024-11-07 19:34:24,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 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) [2024-11-07 19:34:24,224 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:24,224 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:24,240 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 [2024-11-07 19:34:24,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:24,425 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)] === [2024-11-07 19:34:24,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1498733176, now seen corresponding path program 6 times [2024-11-07 19:34:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:24,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307120423] [2024-11-07 19:34:24,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307120423] [2024-11-07 19:34:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307120423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493113728] [2024-11-07 19:34:24,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 19:34:24,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:24,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:24,528 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) [2024-11-07 19:34:24,529 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 [2024-11-07 19:34:24,570 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-07 19:34:24,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:24,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:24,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:24,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493113728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:24,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:24,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-07 19:34:24,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272462783] [2024-11-07 19:34:24,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:24,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:34:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:34:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:34:24,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:24,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 210 transitions, 3260 flow. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-07 19:34:24,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:24,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:24,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:25,669 INFO L124 PetriNetUnfolderBase]: 2437/4008 cut-off events. [2024-11-07 19:34:25,670 INFO L125 PetriNetUnfolderBase]: For 86655/86655 co-relation queries the response was YES. [2024-11-07 19:34:25,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28586 conditions, 4008 events. 2437/4008 cut-off events. For 86655/86655 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21738 event pairs, 98 based on Foata normal form. 40/4048 useless extension candidates. Maximal degree in co-relation 28469. Up to 1349 conditions per place. [2024-11-07 19:34:25,727 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 161 selfloop transitions, 188 changer transitions 2/352 dead transitions. [2024-11-07 19:34:25,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 352 transitions, 5685 flow [2024-11-07 19:34:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 19:34:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 19:34:25,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 173 transitions. [2024-11-07 19:34:25,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4505208333333333 [2024-11-07 19:34:25,728 INFO L175 Difference]: Start difference. First operand has 163 places, 210 transitions, 3260 flow. Second operand 16 states and 173 transitions. [2024-11-07 19:34:25,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 352 transitions, 5685 flow [2024-11-07 19:34:25,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 352 transitions, 5318 flow, removed 137 selfloop flow, removed 8 redundant places. [2024-11-07 19:34:25,962 INFO L231 Difference]: Finished difference. Result has 176 places, 266 transitions, 4646 flow [2024-11-07 19:34:25,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4646, PETRI_PLACES=176, PETRI_TRANSITIONS=266} [2024-11-07 19:34:25,963 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 150 predicate places. [2024-11-07 19:34:25,963 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 266 transitions, 4646 flow [2024-11-07 19:34:25,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 13 states have internal predecessors, (96), 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) [2024-11-07 19:34:25,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:25,963 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:25,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 19:34:26,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:26,164 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)] === [2024-11-07 19:34:26,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash 550614130, now seen corresponding path program 7 times [2024-11-07 19:34:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:26,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235005305] [2024-11-07 19:34:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:26,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235005305] [2024-11-07 19:34:26,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235005305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:26,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296648128] [2024-11-07 19:34:26,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 19:34:26,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:26,229 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) [2024-11-07 19:34:26,230 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 [2024-11-07 19:34:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:26,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:26,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:26,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:26,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296648128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:26,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:26,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-07 19:34:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646119708] [2024-11-07 19:34:26,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:26,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:34:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:34:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:34:26,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:26,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 266 transitions, 4646 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-07 19:34:26,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:26,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:26,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:27,270 INFO L124 PetriNetUnfolderBase]: 2443/4030 cut-off events. [2024-11-07 19:34:27,273 INFO L125 PetriNetUnfolderBase]: For 98541/98541 co-relation queries the response was YES. [2024-11-07 19:34:27,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30270 conditions, 4030 events. 2443/4030 cut-off events. For 98541/98541 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22062 event pairs, 270 based on Foata normal form. 8/4038 useless extension candidates. Maximal degree in co-relation 28872. Up to 1074 conditions per place. [2024-11-07 19:34:27,343 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 182 selfloop transitions, 151 changer transitions 3/337 dead transitions. [2024-11-07 19:34:27,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 337 transitions, 6045 flow [2024-11-07 19:34:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 19:34:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-07 19:34:27,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-11-07 19:34:27,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4935897435897436 [2024-11-07 19:34:27,345 INFO L175 Difference]: Start difference. First operand has 176 places, 266 transitions, 4646 flow. Second operand 13 states and 154 transitions. [2024-11-07 19:34:27,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 337 transitions, 6045 flow [2024-11-07 19:34:27,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 337 transitions, 5965 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-07 19:34:27,709 INFO L231 Difference]: Finished difference. Result has 183 places, 265 transitions, 4901 flow [2024-11-07 19:34:27,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4901, PETRI_PLACES=183, PETRI_TRANSITIONS=265} [2024-11-07 19:34:27,710 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 157 predicate places. [2024-11-07 19:34:27,710 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 265 transitions, 4901 flow [2024-11-07 19:34:27,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2024-11-07 19:34:27,712 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:27,712 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:27,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 19:34:27,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:27,913 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)] === [2024-11-07 19:34:27,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash -835767592, now seen corresponding path program 8 times [2024-11-07 19:34:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738552754] [2024-11-07 19:34:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:27,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738552754] [2024-11-07 19:34:27,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738552754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:27,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333508276] [2024-11-07 19:34:27,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:34:27,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:27,984 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) [2024-11-07 19:34:27,986 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 [2024-11-07 19:34:28,034 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:34:28,035 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:28,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:28,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:28,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:28,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:28,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333508276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:28,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:28,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-07 19:34:28,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693799464] [2024-11-07 19:34:28,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:28,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:34:28,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:28,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:34:28,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:34:28,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:28,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 265 transitions, 4901 flow. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-07 19:34:28,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:28,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:28,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:29,151 INFO L124 PetriNetUnfolderBase]: 2756/4536 cut-off events. [2024-11-07 19:34:29,151 INFO L125 PetriNetUnfolderBase]: For 124440/124440 co-relation queries the response was YES. [2024-11-07 19:34:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35613 conditions, 4536 events. 2756/4536 cut-off events. For 124440/124440 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 25253 event pairs, 172 based on Foata normal form. 54/4590 useless extension candidates. Maximal degree in co-relation 33774. Up to 1312 conditions per place. [2024-11-07 19:34:29,205 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 153 selfloop transitions, 280 changer transitions 6/440 dead transitions. [2024-11-07 19:34:29,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 440 transitions, 8163 flow [2024-11-07 19:34:29,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 19:34:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 19:34:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 259 transitions. [2024-11-07 19:34:29,207 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43166666666666664 [2024-11-07 19:34:29,207 INFO L175 Difference]: Start difference. First operand has 183 places, 265 transitions, 4901 flow. Second operand 25 states and 259 transitions. [2024-11-07 19:34:29,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 440 transitions, 8163 flow [2024-11-07 19:34:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 440 transitions, 7773 flow, removed 36 selfloop flow, removed 12 redundant places. [2024-11-07 19:34:29,693 INFO L231 Difference]: Finished difference. Result has 201 places, 340 transitions, 7056 flow [2024-11-07 19:34:29,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7056, PETRI_PLACES=201, PETRI_TRANSITIONS=340} [2024-11-07 19:34:29,694 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 175 predicate places. [2024-11-07 19:34:29,694 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 340 transitions, 7056 flow [2024-11-07 19:34:29,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 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) [2024-11-07 19:34:29,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:29,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:29,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-07 19:34:29,894 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,SelfDestructingSolverStorable15 [2024-11-07 19:34:29,895 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)] === [2024-11-07 19:34:29,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1735827144, now seen corresponding path program 9 times [2024-11-07 19:34:29,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270195830] [2024-11-07 19:34:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270195830] [2024-11-07 19:34:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270195830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549175092] [2024-11-07 19:34:29,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:34:29,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:29,967 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) [2024-11-07 19:34:29,968 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 [2024-11-07 19:34:30,105 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-07 19:34:30,105 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:30,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:30,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:30,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:30,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549175092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:30,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:30,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 19:34:30,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012563484] [2024-11-07 19:34:30,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:30,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:34:30,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:30,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:34:30,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:34:30,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:30,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 340 transitions, 7056 flow. Second operand has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:30,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:30,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:30,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:31,362 INFO L124 PetriNetUnfolderBase]: 3134/5224 cut-off events. [2024-11-07 19:34:31,362 INFO L125 PetriNetUnfolderBase]: For 163198/163198 co-relation queries the response was YES. [2024-11-07 19:34:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43511 conditions, 5224 events. 3134/5224 cut-off events. For 163198/163198 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 30545 event pairs, 132 based on Foata normal form. 30/5254 useless extension candidates. Maximal degree in co-relation 40912. Up to 1529 conditions per place. [2024-11-07 19:34:31,413 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 236 selfloop transitions, 319 changer transitions 5/561 dead transitions. [2024-11-07 19:34:31,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 561 transitions, 11590 flow [2024-11-07 19:34:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-07 19:34:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-11-07 19:34:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 300 transitions. [2024-11-07 19:34:31,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-11-07 19:34:31,415 INFO L175 Difference]: Start difference. First operand has 201 places, 340 transitions, 7056 flow. Second operand 29 states and 300 transitions. [2024-11-07 19:34:31,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 561 transitions, 11590 flow [2024-11-07 19:34:32,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 561 transitions, 11025 flow, removed 177 selfloop flow, removed 11 redundant places. [2024-11-07 19:34:32,155 INFO L231 Difference]: Finished difference. Result has 224 places, 415 transitions, 9386 flow [2024-11-07 19:34:32,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=6586, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9386, PETRI_PLACES=224, PETRI_TRANSITIONS=415} [2024-11-07 19:34:32,156 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 198 predicate places. [2024-11-07 19:34:32,156 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 415 transitions, 9386 flow [2024-11-07 19:34:32,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 15 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:32,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:32,156 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:32,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-07 19:34:32,357 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,SelfDestructingSolverStorable16 [2024-11-07 19:34:32,357 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)] === [2024-11-07 19:34:32,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:32,357 INFO L85 PathProgramCache]: Analyzing trace with hash 626728882, now seen corresponding path program 10 times [2024-11-07 19:34:32,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:32,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023333998] [2024-11-07 19:34:32,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:32,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:32,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:32,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:32,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023333998] [2024-11-07 19:34:32,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023333998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:32,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543063664] [2024-11-07 19:34:32,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:34:32,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:32,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:32,418 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) [2024-11-07 19:34:32,420 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 [2024-11-07 19:34:32,466 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:34:32,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:32,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:32,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:32,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543063664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:32,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 19:34:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724841276] [2024-11-07 19:34:32,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:32,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:34:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:34:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:34:32,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 415 transitions, 9386 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-07 19:34:32,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:32,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:33,893 INFO L124 PetriNetUnfolderBase]: 3536/5873 cut-off events. [2024-11-07 19:34:33,894 INFO L125 PetriNetUnfolderBase]: For 222062/222062 co-relation queries the response was YES. [2024-11-07 19:34:33,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50694 conditions, 5873 events. 3536/5873 cut-off events. For 222062/222062 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 35020 event pairs, 1270 based on Foata normal form. 18/5891 useless extension candidates. Maximal degree in co-relation 48503. Up to 4490 conditions per place. [2024-11-07 19:34:33,959 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 454 selfloop transitions, 70 changer transitions 2/527 dead transitions. [2024-11-07 19:34:33,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 527 transitions, 11966 flow [2024-11-07 19:34:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-07 19:34:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-07 19:34:33,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 172 transitions. [2024-11-07 19:34:33,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-11-07 19:34:33,961 INFO L175 Difference]: Start difference. First operand has 224 places, 415 transitions, 9386 flow. Second operand 16 states and 172 transitions. [2024-11-07 19:34:33,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 527 transitions, 11966 flow [2024-11-07 19:34:34,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 527 transitions, 11729 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-11-07 19:34:34,901 INFO L231 Difference]: Finished difference. Result has 233 places, 448 transitions, 10046 flow [2024-11-07 19:34:34,902 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9167, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10046, PETRI_PLACES=233, PETRI_TRANSITIONS=448} [2024-11-07 19:34:34,902 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 207 predicate places. [2024-11-07 19:34:34,902 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 448 transitions, 10046 flow [2024-11-07 19:34:34,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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) [2024-11-07 19:34:34,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:34,902 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:34,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-07 19:34:35,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:34:35,103 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)] === [2024-11-07 19:34:35,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:35,104 INFO L85 PathProgramCache]: Analyzing trace with hash -884777506, now seen corresponding path program 11 times [2024-11-07 19:34:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418273147] [2024-11-07 19:34:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:35,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:35,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:35,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418273147] [2024-11-07 19:34:35,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418273147] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:35,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916576312] [2024-11-07 19:34:35,237 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:34:35,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:35,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:35,239 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) [2024-11-07 19:34:35,241 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 [2024-11-07 19:34:35,289 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-07 19:34:35,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:35,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:35,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:35,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:35,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:35,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916576312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:35,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-07 19:34:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673763549] [2024-11-07 19:34:35,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:35,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-07 19:34:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-07 19:34:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-07 19:34:35,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:35,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 448 transitions, 10046 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-07 19:34:35,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:35,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:35,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:36,661 INFO L124 PetriNetUnfolderBase]: 3883/6425 cut-off events. [2024-11-07 19:34:36,661 INFO L125 PetriNetUnfolderBase]: For 277817/277817 co-relation queries the response was YES. [2024-11-07 19:34:36,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57577 conditions, 6425 events. 3883/6425 cut-off events. For 277817/277817 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38569 event pairs, 623 based on Foata normal form. 84/6509 useless extension candidates. Maximal degree in co-relation 55355. Up to 2720 conditions per place. [2024-11-07 19:34:36,718 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 346 selfloop transitions, 243 changer transitions 3/593 dead transitions. [2024-11-07 19:34:36,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 593 transitions, 13457 flow [2024-11-07 19:34:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 19:34:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 19:34:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 221 transitions. [2024-11-07 19:34:36,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46041666666666664 [2024-11-07 19:34:36,719 INFO L175 Difference]: Start difference. First operand has 233 places, 448 transitions, 10046 flow. Second operand 20 states and 221 transitions. [2024-11-07 19:34:36,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 593 transitions, 13457 flow [2024-11-07 19:34:37,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 593 transitions, 13138 flow, removed 126 selfloop flow, removed 7 redundant places. [2024-11-07 19:34:37,929 INFO L231 Difference]: Finished difference. Result has 256 places, 480 transitions, 11640 flow [2024-11-07 19:34:37,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=9758, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11640, PETRI_PLACES=256, PETRI_TRANSITIONS=480} [2024-11-07 19:34:37,930 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 230 predicate places. [2024-11-07 19:34:37,930 INFO L471 AbstractCegarLoop]: Abstraction has has 256 places, 480 transitions, 11640 flow [2024-11-07 19:34:37,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 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) [2024-11-07 19:34:37,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:37,930 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:37,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-07 19:34:38,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:38,135 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)] === [2024-11-07 19:34:38,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash -485468112, now seen corresponding path program 12 times [2024-11-07 19:34:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463085587] [2024-11-07 19:34:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:38,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:38,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:38,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463085587] [2024-11-07 19:34:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463085587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:38,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340249481] [2024-11-07 19:34:38,191 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-07 19:34:38,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:38,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:38,194 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) [2024-11-07 19:34:38,196 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 [2024-11-07 19:34:38,241 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-07 19:34:38,241 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:38,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:38,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:38,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:34:38,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340249481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:38,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:38,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-07 19:34:38,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349296654] [2024-11-07 19:34:38,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:38,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:34:38,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:34:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:34:38,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:38,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 480 transitions, 11640 flow. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-07 19:34:38,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:38,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:39,612 INFO L124 PetriNetUnfolderBase]: 4065/6718 cut-off events. [2024-11-07 19:34:39,612 INFO L125 PetriNetUnfolderBase]: For 353296/353296 co-relation queries the response was YES. [2024-11-07 19:34:39,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64388 conditions, 6718 events. 4065/6718 cut-off events. For 353296/353296 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 40506 event pairs, 611 based on Foata normal form. 54/6772 useless extension candidates. Maximal degree in co-relation 63852. Up to 2537 conditions per place. [2024-11-07 19:34:39,676 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 319 selfloop transitions, 272 changer transitions 2/594 dead transitions. [2024-11-07 19:34:39,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 594 transitions, 14635 flow [2024-11-07 19:34:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-07 19:34:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-07 19:34:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 188 transitions. [2024-11-07 19:34:39,677 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-11-07 19:34:39,677 INFO L175 Difference]: Start difference. First operand has 256 places, 480 transitions, 11640 flow. Second operand 18 states and 188 transitions. [2024-11-07 19:34:39,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 594 transitions, 14635 flow [2024-11-07 19:34:41,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 594 transitions, 14318 flow, removed 140 selfloop flow, removed 4 redundant places. [2024-11-07 19:34:41,101 INFO L231 Difference]: Finished difference. Result has 276 places, 503 transitions, 13076 flow [2024-11-07 19:34:41,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11388, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=13076, PETRI_PLACES=276, PETRI_TRANSITIONS=503} [2024-11-07 19:34:41,101 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 250 predicate places. [2024-11-07 19:34:41,102 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 503 transitions, 13076 flow [2024-11-07 19:34:41,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 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) [2024-11-07 19:34:41,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:41,102 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:41,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-07 19:34:41,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:41,302 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)] === [2024-11-07 19:34:41,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash 540087214, now seen corresponding path program 13 times [2024-11-07 19:34:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190487347] [2024-11-07 19:34:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:41,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:41,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190487347] [2024-11-07 19:34:41,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190487347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:41,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158214691] [2024-11-07 19:34:41,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-07 19:34:41,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:41,374 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) [2024-11-07 19:34:41,375 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 [2024-11-07 19:34:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:41,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:34:41,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:41,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:41,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158214691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:41,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:41,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-07 19:34:41,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252393290] [2024-11-07 19:34:41,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:41,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:34:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:41,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:34:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:34:41,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:41,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 503 transitions, 13076 flow. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:41,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:41,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:41,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:43,140 INFO L124 PetriNetUnfolderBase]: 4062/6713 cut-off events. [2024-11-07 19:34:43,140 INFO L125 PetriNetUnfolderBase]: For 387926/387926 co-relation queries the response was YES. [2024-11-07 19:34:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67120 conditions, 6713 events. 4062/6713 cut-off events. For 387926/387926 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40634 event pairs, 1520 based on Foata normal form. 8/6721 useless extension candidates. Maximal degree in co-relation 66470. Up to 5388 conditions per place. [2024-11-07 19:34:43,199 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 482 selfloop transitions, 70 changer transitions 2/555 dead transitions. [2024-11-07 19:34:43,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 555 transitions, 14814 flow [2024-11-07 19:34:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:34:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:34:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-11-07 19:34:43,200 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-07 19:34:43,200 INFO L175 Difference]: Start difference. First operand has 276 places, 503 transitions, 13076 flow. Second operand 11 states and 126 transitions. [2024-11-07 19:34:43,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 555 transitions, 14814 flow [2024-11-07 19:34:44,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 555 transitions, 14572 flow, removed 72 selfloop flow, removed 13 redundant places. [2024-11-07 19:34:44,521 INFO L231 Difference]: Finished difference. Result has 271 places, 500 transitions, 12967 flow [2024-11-07 19:34:44,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12802, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12967, PETRI_PLACES=271, PETRI_TRANSITIONS=500} [2024-11-07 19:34:44,522 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 245 predicate places. [2024-11-07 19:34:44,522 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 500 transitions, 12967 flow [2024-11-07 19:34:44,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:34:44,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:44,522 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:44,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-07 19:34:44,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:44,723 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)] === [2024-11-07 19:34:44,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1848437104, now seen corresponding path program 14 times [2024-11-07 19:34:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:44,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400311507] [2024-11-07 19:34:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:34:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400311507] [2024-11-07 19:34:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400311507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223230005] [2024-11-07 19:34:44,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:34:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:44,794 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) [2024-11-07 19:34:44,796 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 [2024-11-07 19:34:44,846 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:34:44,846 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:44,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-07 19:34:44,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:44,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:44,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223230005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:44,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:44,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 7 [2024-11-07 19:34:44,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134425180] [2024-11-07 19:34:44,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:44,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:34:44,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:34:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:34:44,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-07 19:34:44,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 500 transitions, 12967 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-07 19:34:44,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:44,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-07 19:34:44,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:46,886 INFO L124 PetriNetUnfolderBase]: 6350/10820 cut-off events. [2024-11-07 19:34:46,886 INFO L125 PetriNetUnfolderBase]: For 614824/615301 co-relation queries the response was YES. [2024-11-07 19:34:46,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108621 conditions, 10820 events. 6350/10820 cut-off events. For 614824/615301 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 75945 event pairs, 588 based on Foata normal form. 208/10917 useless extension candidates. Maximal degree in co-relation 106937. Up to 3231 conditions per place. [2024-11-07 19:34:47,001 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 1082 selfloop transitions, 10 changer transitions 147/1289 dead transitions. [2024-11-07 19:34:47,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1289 transitions, 36955 flow [2024-11-07 19:34:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:34:47,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:34:47,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-11-07 19:34:47,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-11-07 19:34:47,003 INFO L175 Difference]: Start difference. First operand has 271 places, 500 transitions, 12967 flow. Second operand 5 states and 83 transitions. [2024-11-07 19:34:47,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 1289 transitions, 36955 flow [2024-11-07 19:34:50,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1289 transitions, 36695 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-07 19:34:50,522 INFO L231 Difference]: Finished difference. Result has 268 places, 496 transitions, 12701 flow [2024-11-07 19:34:50,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12701, PETRI_PLACES=268, PETRI_TRANSITIONS=496} [2024-11-07 19:34:50,522 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 242 predicate places. [2024-11-07 19:34:50,523 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 496 transitions, 12701 flow [2024-11-07 19:34:50,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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) [2024-11-07 19:34:50,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:34:50,523 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:34:50,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-07 19:34:50,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:50,723 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:34:50,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:34:50,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1850324723, now seen corresponding path program 15 times [2024-11-07 19:34:50,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:34:50,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712204122] [2024-11-07 19:34:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:34:50,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:34:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:34:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:34:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712204122] [2024-11-07 19:34:50,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712204122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:34:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077174046] [2024-11-07 19:34:50,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:34:50,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:34:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:34:50,820 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) [2024-11-07 19:34:50,822 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 [2024-11-07 19:34:50,877 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-07 19:34:50,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:34:50,878 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:34:50,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:34:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:50,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:34:51,083 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:34:51,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077174046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:34:51,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:34:51,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-07 19:34:51,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370280239] [2024-11-07 19:34:51,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:34:51,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 19:34:51,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:34:51,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 19:34:51,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-07 19:34:51,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:34:51,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 496 transitions, 12701 flow. Second operand has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2024-11-07 19:34:51,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:34:51,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:34:51,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:34:54,726 INFO L124 PetriNetUnfolderBase]: 9840/16096 cut-off events. [2024-11-07 19:34:54,726 INFO L125 PetriNetUnfolderBase]: For 992310/992310 co-relation queries the response was YES. [2024-11-07 19:34:54,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168975 conditions, 16096 events. 9840/16096 cut-off events. For 992310/992310 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 109864 event pairs, 350 based on Foata normal form. 185/16281 useless extension candidates. Maximal degree in co-relation 167333. Up to 4535 conditions per place. [2024-11-07 19:34:54,893 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 461 selfloop transitions, 600 changer transitions 31/1093 dead transitions. [2024-11-07 19:34:54,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1093 transitions, 27677 flow [2024-11-07 19:34:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-07 19:34:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-07 19:34:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 460 transitions. [2024-11-07 19:34:54,894 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-11-07 19:34:54,894 INFO L175 Difference]: Start difference. First operand has 268 places, 496 transitions, 12701 flow. Second operand 44 states and 460 transitions. [2024-11-07 19:34:54,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1093 transitions, 27677 flow [2024-11-07 19:35:00,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 1093 transitions, 27509 flow, removed 84 selfloop flow, removed 0 redundant places. [2024-11-07 19:35:00,591 INFO L231 Difference]: Finished difference. Result has 331 places, 732 transitions, 21572 flow [2024-11-07 19:35:00,591 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=12693, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=21572, PETRI_PLACES=331, PETRI_TRANSITIONS=732} [2024-11-07 19:35:00,592 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 305 predicate places. [2024-11-07 19:35:00,592 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 732 transitions, 21572 flow [2024-11-07 19:35:00,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.15) internal successors, (143), 20 states have internal predecessors, (143), 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) [2024-11-07 19:35:00,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:35:00,592 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:35:00,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-07 19:35:00,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:35:00,793 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:35:00,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:35:00,793 INFO L85 PathProgramCache]: Analyzing trace with hash 81474871, now seen corresponding path program 16 times [2024-11-07 19:35:00,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:35:00,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235560937] [2024-11-07 19:35:00,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:35:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:35:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:35:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:35:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235560937] [2024-11-07 19:35:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235560937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:35:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659808663] [2024-11-07 19:35:00,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-07 19:35:00,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:35:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:35:00,884 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:35:00,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-07 19:35:00,941 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-07 19:35:00,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:35:00,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:35:00,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:35:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:01,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:35:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:01,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659808663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:35:01,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:35:01,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-07 19:35:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382980965] [2024-11-07 19:35:01,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:35:01,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:35:01,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:35:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:35:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:35:01,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:35:01,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 732 transitions, 21572 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-07 19:35:01,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:35:01,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:35:01,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:35:06,851 INFO L124 PetriNetUnfolderBase]: 11862/19406 cut-off events. [2024-11-07 19:35:06,851 INFO L125 PetriNetUnfolderBase]: For 1556284/1556284 co-relation queries the response was YES. [2024-11-07 19:35:07,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223898 conditions, 19406 events. 11862/19406 cut-off events. For 1556284/1556284 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 135517 event pairs, 601 based on Foata normal form. 71/19477 useless extension candidates. Maximal degree in co-relation 221932. Up to 6382 conditions per place. [2024-11-07 19:35:07,128 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 437 selfloop transitions, 857 changer transitions 74/1369 dead transitions. [2024-11-07 19:35:07,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 1369 transitions, 40642 flow [2024-11-07 19:35:07,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-07 19:35:07,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-07 19:35:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 202 transitions. [2024-11-07 19:35:07,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-11-07 19:35:07,130 INFO L175 Difference]: Start difference. First operand has 331 places, 732 transitions, 21572 flow. Second operand 19 states and 202 transitions. [2024-11-07 19:35:07,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 1369 transitions, 40642 flow [2024-11-07 19:35:19,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 1369 transitions, 38779 flow, removed 556 selfloop flow, removed 16 redundant places. [2024-11-07 19:35:19,806 INFO L231 Difference]: Finished difference. Result has 342 places, 1098 transitions, 34657 flow [2024-11-07 19:35:19,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20702, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=34657, PETRI_PLACES=342, PETRI_TRANSITIONS=1098} [2024-11-07 19:35:19,807 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 316 predicate places. [2024-11-07 19:35:19,807 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 1098 transitions, 34657 flow [2024-11-07 19:35:19,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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) [2024-11-07 19:35:19,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:35:19,807 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:35:19,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-07 19:35:20,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-07 19:35:20,008 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:35:20,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:35:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1829267253, now seen corresponding path program 17 times [2024-11-07 19:35:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:35:20,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058556899] [2024-11-07 19:35:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:35:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:35:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:35:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:20,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:35:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058556899] [2024-11-07 19:35:20,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058556899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:35:20,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350138414] [2024-11-07 19:35:20,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-07 19:35:20,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:35:20,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:35:20,097 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:35:20,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-07 19:35:20,148 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-07 19:35:20,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:35:20,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:35:20,150 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:35:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:20,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:35:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:35:20,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350138414] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:35:20,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:35:20,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-07 19:35:20,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030587641] [2024-11-07 19:35:20,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:35:20,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-07 19:35:20,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:35:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-07 19:35:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 19:35:20,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 24 [2024-11-07 19:35:20,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1098 transitions, 34657 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:35:20,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:35:20,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 24 [2024-11-07 19:35:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:35:28,748 INFO L124 PetriNetUnfolderBase]: 14885/24142 cut-off events. [2024-11-07 19:35:28,748 INFO L125 PetriNetUnfolderBase]: For 2106198/2106198 co-relation queries the response was YES. [2024-11-07 19:35:29,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287431 conditions, 24142 events. 14885/24142 cut-off events. For 2106198/2106198 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 171203 event pairs, 1253 based on Foata normal form. 58/24200 useless extension candidates. Maximal degree in co-relation 285448. Up to 6782 conditions per place. [2024-11-07 19:35:29,354 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 715 selfloop transitions, 768 changer transitions 9/1493 dead transitions. [2024-11-07 19:35:29,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1493 transitions, 47061 flow [2024-11-07 19:35:29,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-07 19:35:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-07 19:35:29,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 238 transitions. [2024-11-07 19:35:29,356 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-11-07 19:35:29,356 INFO L175 Difference]: Start difference. First operand has 342 places, 1098 transitions, 34657 flow. Second operand 21 states and 238 transitions. [2024-11-07 19:35:29,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1493 transitions, 47061 flow