./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i --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/pthread-ext/31_simple_loop5_vs.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\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', 'd5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:08:41,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:08:41,424 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:08:41,431 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:08:41,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:08:41,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:08:41,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:08:41,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:08:41,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:08:41,462 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:08:41,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:08:41,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:08:41,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:08:41,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:08:41,463 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:08:41,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:08:41,463 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:08:41,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:08:41,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:08:41,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:08:41,465 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:08:41,465 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 -> d5289904c0d34e84fc731c9bca51c5d8bc54117a73409b0419290d8896b60d2d [2024-11-07 19:08:41,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:08:41,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:08:41,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:08:41,758 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:08:41,759 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:08:41,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-07 19:08:43,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:08:43,414 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:08:43,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/31_simple_loop5_vs.i [2024-11-07 19:08:43,432 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27b681ef3/062b9f5f341443f389a3d134e6137ebc/FLAGc49124d75 [2024-11-07 19:08:43,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/27b681ef3/062b9f5f341443f389a3d134e6137ebc [2024-11-07 19:08:43,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:08:43,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:08:43,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:08:43,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:08:43,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:08:43,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f1f8d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43, skipping insertion in model container [2024-11-07 19:08:43,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:08:43,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:08:43,751 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:08:43,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:08:43,838 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:08:43,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43 WrapperNode [2024-11-07 19:08:43,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:08:43,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:08:43,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:08:43,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:08:43,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,860 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,873 INFO L138 Inliner]: procedures = 162, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-07 19:08:43,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:08:43,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:08:43,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:08:43,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:08:43,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,903 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-07 19:08:43,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:08:43,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:08:43,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:08:43,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:08:43,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (1/1) ... [2024-11-07 19:08:43,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:08:43,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:08:43,955 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 19:08:43,958 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 19:08:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-07 19:08:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-07 19:08:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-07 19:08:43,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-07 19:08:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:08:43,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:08:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:08:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:08:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:08:43,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:08:43,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:08:43,980 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 19:08:44,093 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:08:44,094 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:08:44,236 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:08:44,236 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:08:44,371 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:08:44,372 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 19:08:44,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:08:44 BoogieIcfgContainer [2024-11-07 19:08:44,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:08:44,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:08:44,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:08:44,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:08:44,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:08:43" (1/3) ... [2024-11-07 19:08:44,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555088cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:08:44, skipping insertion in model container [2024-11-07 19:08:44,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:08:43" (2/3) ... [2024-11-07 19:08:44,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@555088cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:08:44, skipping insertion in model container [2024-11-07 19:08:44,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:08:44" (3/3) ... [2024-11-07 19:08:44,384 INFO L112 eAbstractionObserver]: Analyzing ICFG 31_simple_loop5_vs.i [2024-11-07 19:08:44,397 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:08:44,398 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:08:44,399 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:08:44,451 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:08:44,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 31 transitions, 70 flow [2024-11-07 19:08:44,512 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-07 19:08:44,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:44,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 4/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 95 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-11-07 19:08:44,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 31 transitions, 70 flow [2024-11-07 19:08:44,521 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 30 transitions, 67 flow [2024-11-07 19:08:44,533 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:08:44,542 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:08:44,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-07 19:08:44,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:08:44,547 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 19:08:44,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:44,547 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:44,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:08:44,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 19:08:44,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:44,556 INFO L85 PathProgramCache]: Analyzing trace with hash 206163919, now seen corresponding path program 1 times [2024-11-07 19:08:44,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:44,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42508543] [2024-11-07 19:08:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:44,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:44,721 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 19:08:44,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42508543] [2024-11-07 19:08:44,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42508543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:44,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:44,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:44,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800522821] [2024-11-07 19:08:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:44,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:08:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:44,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:08:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:08:44,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-11-07 19:08:44,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 67 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 19:08:44,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:44,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-11-07 19:08:44,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:44,847 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2024-11-07 19:08:44,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:44,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 166 events. 79/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 720 event pairs, 66 based on Foata normal form. 44/202 useless extension candidates. Maximal degree in co-relation 305. Up to 136 conditions per place. [2024-11-07 19:08:44,856 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 12 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2024-11-07 19:08:44,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 22 transitions, 75 flow [2024-11-07 19:08:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:08:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:08:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 41 transitions. [2024-11-07 19:08:44,868 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6612903225806451 [2024-11-07 19:08:44,869 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 67 flow. Second operand 2 states and 41 transitions. [2024-11-07 19:08:44,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 22 transitions, 75 flow [2024-11-07 19:08:44,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:44,874 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2024-11-07 19:08:44,876 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-11-07 19:08:44,878 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2024-11-07 19:08:44,879 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2024-11-07 19:08:44,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 19:08:44,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:44,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:08:44,881 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-07 19:08:44,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 26218542, now seen corresponding path program 1 times [2024-11-07 19:08:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450911371] [2024-11-07 19:08:44,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:44,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:44,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:08:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:44,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:08:44,949 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:08:44,950 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-07 19:08:44,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-07 19:08:44,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-07 19:08:44,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-11-07 19:08:44,952 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-07 19:08:44,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:08:44,953 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 19:08:44,958 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:08:44,958 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:08:44,983 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:08:44,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 126 flow [2024-11-07 19:08:45,000 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-11-07 19:08:45,001 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:08:45,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-07 19:08:45,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 126 flow [2024-11-07 19:08:45,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 87 flow [2024-11-07 19:08:45,005 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:08:45,006 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:08:45,006 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-07 19:08:45,009 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:08:45,009 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 19:08:45,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:45,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:45,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:08:45,009 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:08:45,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 257367695, now seen corresponding path program 1 times [2024-11-07 19:08:45,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:45,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849665950] [2024-11-07 19:08:45,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:45,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:45,074 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 19:08:45,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:45,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849665950] [2024-11-07 19:08:45,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849665950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:45,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:45,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:45,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160634240] [2024-11-07 19:08:45,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:45,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:08:45,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:08:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:08:45,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-07 19:08:45,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 87 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 19:08:45,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:45,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-07 19:08:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:45,243 INFO L124 PetriNetUnfolderBase]: 559/918 cut-off events. [2024-11-07 19:08:45,243 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-07 19:08:45,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 918 events. 559/918 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4736 event pairs, 450 based on Foata normal form. 188/1090 useless extension candidates. Maximal degree in co-relation 1769. Up to 800 conditions per place. [2024-11-07 19:08:45,255 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 16 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2024-11-07 19:08:45,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 101 flow [2024-11-07 19:08:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:08:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:08:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2024-11-07 19:08:45,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6037735849056604 [2024-11-07 19:08:45,258 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 87 flow. Second operand 2 states and 64 transitions. [2024-11-07 19:08:45,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 101 flow [2024-11-07 19:08:45,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:45,261 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 68 flow [2024-11-07 19:08:45,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-07 19:08:45,262 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -7 predicate places. [2024-11-07 19:08:45,262 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 68 flow [2024-11-07 19:08:45,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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 19:08:45,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:45,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:45,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:08:45,263 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:08:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash -823457228, now seen corresponding path program 1 times [2024-11-07 19:08:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443760245] [2024-11-07 19:08:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:45,412 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 19:08:45,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443760245] [2024-11-07 19:08:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443760245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:45,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529063362] [2024-11-07 19:08:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:45,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:08:45,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:08:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:08:45,421 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-11-07 19:08:45,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:08:45,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:45,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-11-07 19:08:45,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:45,554 INFO L124 PetriNetUnfolderBase]: 620/1066 cut-off events. [2024-11-07 19:08:45,554 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-11-07 19:08:45,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1066 events. 620/1066 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5945 event pairs, 139 based on Foata normal form. 20/1077 useless extension candidates. Maximal degree in co-relation 2027. Up to 760 conditions per place. [2024-11-07 19:08:45,562 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 22 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-11-07 19:08:45,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 141 flow [2024-11-07 19:08:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:08:45,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:08:45,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:08:45,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2024-11-07 19:08:45,564 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 68 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:08:45,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 141 flow [2024-11-07 19:08:45,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 141 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:08:45,566 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 87 flow [2024-11-07 19:08:45,567 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-11-07 19:08:45,567 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-07 19:08:45,567 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 87 flow [2024-11-07 19:08:45,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 19:08:45,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:45,568 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:45,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:08:45,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-07 19:08:45,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:45,569 INFO L85 PathProgramCache]: Analyzing trace with hash -212865088, now seen corresponding path program 1 times [2024-11-07 19:08:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:45,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818554989] [2024-11-07 19:08:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:45,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:45,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:08:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:45,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:08:45,608 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-07 19:08:45,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-07 19:08:45,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:08:45,610 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:08:45,611 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:08:45,611 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:08:45,640 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:08:45,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 75 transitions, 186 flow [2024-11-07 19:08:45,652 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-11-07 19:08:45,652 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-07 19:08:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 58 events. 6/58 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 160 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 69. Up to 4 conditions per place. [2024-11-07 19:08:45,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 75 transitions, 186 flow [2024-11-07 19:08:45,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 44 transitions, 109 flow [2024-11-07 19:08:45,654 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:08:45,654 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:08:45,657 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-07 19:08:45,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:08:45,659 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 19:08:45,659 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:45,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:45,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:08:45,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:08:45,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:45,660 INFO L85 PathProgramCache]: Analyzing trace with hash 329566181, now seen corresponding path program 1 times [2024-11-07 19:08:45,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:45,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339331571] [2024-11-07 19:08:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:45,682 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 19:08:45,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:45,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339331571] [2024-11-07 19:08:45,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339331571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:45,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:45,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:45,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720144434] [2024-11-07 19:08:45,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:45,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:08:45,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:45,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:08:45,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:08:45,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-07 19:08:45,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 19:08:45,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:45,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-07 19:08:45,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:46,178 INFO L124 PetriNetUnfolderBase]: 3247/4710 cut-off events. [2024-11-07 19:08:46,178 INFO L125 PetriNetUnfolderBase]: For 560/560 co-relation queries the response was YES. [2024-11-07 19:08:46,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9253 conditions, 4710 events. 3247/4710 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26567 event pairs, 2562 based on Foata normal form. 763/5404 useless extension candidates. Maximal degree in co-relation 9241. Up to 4224 conditions per place. [2024-11-07 19:08:46,223 INFO L140 encePairwiseOnDemand]: 68/75 looper letters, 20 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-07 19:08:46,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 129 flow [2024-11-07 19:08:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:08:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:08:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 87 transitions. [2024-11-07 19:08:46,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-11-07 19:08:46,229 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 109 flow. Second operand 2 states and 87 transitions. [2024-11-07 19:08:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 129 flow [2024-11-07 19:08:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 126 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:46,231 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 86 flow [2024-11-07 19:08:46,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2024-11-07 19:08:46,232 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -8 predicate places. [2024-11-07 19:08:46,232 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 86 flow [2024-11-07 19:08:46,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 19:08:46,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:46,232 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:46,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:08:46,233 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:08:46,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:46,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2086411230, now seen corresponding path program 1 times [2024-11-07 19:08:46,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:46,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009482048] [2024-11-07 19:08:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:46,338 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 19:08:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009482048] [2024-11-07 19:08:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009482048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717362768] [2024-11-07 19:08:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:46,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:08:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:08:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:08:46,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-07 19:08:46,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:08:46,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:46,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-07 19:08:46,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:46,881 INFO L124 PetriNetUnfolderBase]: 3515/5257 cut-off events. [2024-11-07 19:08:46,881 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-11-07 19:08:46,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 5257 events. 3515/5257 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 31416 event pairs, 724 based on Foata normal form. 44/5273 useless extension candidates. Maximal degree in co-relation 10157. Up to 4267 conditions per place. [2024-11-07 19:08:46,933 INFO L140 encePairwiseOnDemand]: 70/75 looper letters, 28 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-11-07 19:08:46,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 184 flow [2024-11-07 19:08:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:08:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:08:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-07 19:08:46,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2024-11-07 19:08:46,939 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 86 flow. Second operand 3 states and 123 transitions. [2024-11-07 19:08:46,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 184 flow [2024-11-07 19:08:46,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:08:46,942 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 112 flow [2024-11-07 19:08:46,942 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-07 19:08:46,943 INFO L277 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-07 19:08:46,944 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 112 flow [2024-11-07 19:08:46,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 19:08:46,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:46,944 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:46,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:08:46,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-07 19:08:46,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1401397513, now seen corresponding path program 1 times [2024-11-07 19:08:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:46,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470895828] [2024-11-07 19:08:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:46,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:46,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:08:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:46,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:08:46,987 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-07 19:08:46,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-07 19:08:46,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:08:46,987 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-07 19:08:46,990 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:08:46,990 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 19:08:47,044 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:08:47,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 97 transitions, 250 flow [2024-11-07 19:08:47,056 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2024-11-07 19:08:47,056 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-07 19:08:47,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 70 events. 7/70 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 203 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 86. Up to 5 conditions per place. [2024-11-07 19:08:47,057 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 97 transitions, 250 flow [2024-11-07 19:08:47,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 51 transitions, 133 flow [2024-11-07 19:08:47,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:08:47,062 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:08:47,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-07 19:08:47,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:08:47,065 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 19:08:47,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:47,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:47,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:08:47,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-07 19:08:47,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash 422759377, now seen corresponding path program 1 times [2024-11-07 19:08:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:47,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129695603] [2024-11-07 19:08:47,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:47,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:47,082 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 19:08:47,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:47,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129695603] [2024-11-07 19:08:47,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129695603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:47,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:47,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878300069] [2024-11-07 19:08:47,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:47,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:08:47,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:08:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:08:47,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-07 19:08:47,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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 19:08:47,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:47,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-07 19:08:47,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:49,183 INFO L124 PetriNetUnfolderBase]: 17071/22950 cut-off events. [2024-11-07 19:08:49,183 INFO L125 PetriNetUnfolderBase]: For 4208/4208 co-relation queries the response was YES. [2024-11-07 19:08:49,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45542 conditions, 22950 events. 17071/22950 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 134440 event pairs, 13314 based on Foata normal form. 3067/25760 useless extension candidates. Maximal degree in co-relation 45529. Up to 20992 conditions per place. [2024-11-07 19:08:49,416 INFO L140 encePairwiseOnDemand]: 89/97 looper letters, 24 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-11-07 19:08:49,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 159 flow [2024-11-07 19:08:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:08:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:08:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 110 transitions. [2024-11-07 19:08:49,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5670103092783505 [2024-11-07 19:08:49,421 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 133 flow. Second operand 2 states and 110 transitions. [2024-11-07 19:08:49,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 159 flow [2024-11-07 19:08:49,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 152 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:49,428 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 104 flow [2024-11-07 19:08:49,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-11-07 19:08:49,431 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2024-11-07 19:08:49,432 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 104 flow [2024-11-07 19:08:49,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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 19:08:49,432 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:49,432 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:49,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:08:49,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-07 19:08:49,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2065459860, now seen corresponding path program 1 times [2024-11-07 19:08:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34064249] [2024-11-07 19:08:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:49,504 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 19:08:49,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:49,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34064249] [2024-11-07 19:08:49,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34064249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:49,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:49,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:49,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381205612] [2024-11-07 19:08:49,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:49,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:08:49,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:08:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:08:49,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-07 19:08:49,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:08:49,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:49,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-07 19:08:49,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:51,216 INFO L124 PetriNetUnfolderBase]: 17930/24628 cut-off events. [2024-11-07 19:08:51,216 INFO L125 PetriNetUnfolderBase]: For 1302/1302 co-relation queries the response was YES. [2024-11-07 19:08:51,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47982 conditions, 24628 events. 17930/24628 cut-off events. For 1302/1302 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 151414 event pairs, 3961 based on Foata normal form. 92/24656 useless extension candidates. Maximal degree in co-relation 47975. Up to 21382 conditions per place. [2024-11-07 19:08:51,355 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 34 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-11-07 19:08:51,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 227 flow [2024-11-07 19:08:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:08:51,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:08:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2024-11-07 19:08:51,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5395189003436426 [2024-11-07 19:08:51,357 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 104 flow. Second operand 3 states and 157 transitions. [2024-11-07 19:08:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 227 flow [2024-11-07 19:08:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 227 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:08:51,359 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 137 flow [2024-11-07 19:08:51,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-07 19:08:51,360 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2024-11-07 19:08:51,360 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 137 flow [2024-11-07 19:08:51,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:08:51,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:51,361 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:51,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:08:51,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-07 19:08:51,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash 862871265, now seen corresponding path program 1 times [2024-11-07 19:08:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925500742] [2024-11-07 19:08:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:51,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:51,435 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 19:08:51,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:51,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925500742] [2024-11-07 19:08:51,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925500742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:51,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:51,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:08:51,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147686382] [2024-11-07 19:08:51,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:51,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:08:51,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:51,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:08:51,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:08:51,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-07 19:08:51,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:08:51,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:51,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-07 19:08:51,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:51,649 INFO L124 PetriNetUnfolderBase]: 1187/2607 cut-off events. [2024-11-07 19:08:51,650 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2024-11-07 19:08:51,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5686 conditions, 2607 events. 1187/2607 cut-off events. For 614/614 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17893 event pairs, 260 based on Foata normal form. 2076/4645 useless extension candidates. Maximal degree in co-relation 5677. Up to 1627 conditions per place. [2024-11-07 19:08:51,672 INFO L140 encePairwiseOnDemand]: 87/97 looper letters, 25 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-11-07 19:08:51,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 239 flow [2024-11-07 19:08:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:08:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:08:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-07 19:08:51,674 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5257731958762887 [2024-11-07 19:08:51,674 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 137 flow. Second operand 3 states and 153 transitions. [2024-11-07 19:08:51,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 239 flow [2024-11-07 19:08:51,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:51,677 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 152 flow [2024-11-07 19:08:51,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-11-07 19:08:51,678 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-07 19:08:51,678 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 152 flow [2024-11-07 19:08:51,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:08:51,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:51,678 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:51,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:08:51,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-07 19:08:51,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1203977249, now seen corresponding path program 1 times [2024-11-07 19:08:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:51,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019385379] [2024-11-07 19:08:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:51,760 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 19:08:51,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:51,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019385379] [2024-11-07 19:08:51,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019385379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:08:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370566698] [2024-11-07 19:08:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:51,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:08:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:08:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:08:51,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 97 [2024-11-07 19:08:51,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 19:08:51,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:51,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 97 [2024-11-07 19:08:51,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:52,029 INFO L124 PetriNetUnfolderBase]: 1731/3694 cut-off events. [2024-11-07 19:08:52,029 INFO L125 PetriNetUnfolderBase]: For 1171/1171 co-relation queries the response was YES. [2024-11-07 19:08:52,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 3694 events. 1731/3694 cut-off events. For 1171/1171 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 26957 event pairs, 86 based on Foata normal form. 30/3714 useless extension candidates. Maximal degree in co-relation 9322. Up to 2243 conditions per place. [2024-11-07 19:08:52,148 INFO L140 encePairwiseOnDemand]: 91/97 looper letters, 49 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-11-07 19:08:52,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 398 flow [2024-11-07 19:08:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:08:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:08:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 215 transitions. [2024-11-07 19:08:52,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5541237113402062 [2024-11-07 19:08:52,150 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 152 flow. Second operand 4 states and 215 transitions. [2024-11-07 19:08:52,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 398 flow [2024-11-07 19:08:52,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:52,155 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 194 flow [2024-11-07 19:08:52,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-11-07 19:08:52,156 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-07 19:08:52,156 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 194 flow [2024-11-07 19:08:52,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 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 19:08:52,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:52,157 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:52,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:08:52,157 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-07 19:08:52,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:52,157 INFO L85 PathProgramCache]: Analyzing trace with hash 360081993, now seen corresponding path program 1 times [2024-11-07 19:08:52,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:52,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774080192] [2024-11-07 19:08:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:52,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:52,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:08:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:08:52,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:08:52,182 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-11-07 19:08:52,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-11-07 19:08:52,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-11-07 19:08:52,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:08:52,183 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:08:52,183 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:08:52,183 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-07 19:08:52,233 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:08:52,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 119 transitions, 318 flow [2024-11-07 19:08:52,241 INFO L124 PetriNetUnfolderBase]: 8/82 cut-off events. [2024-11-07 19:08:52,242 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 19:08:52,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 82 events. 8/82 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 236 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 104. Up to 6 conditions per place. [2024-11-07 19:08:52,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 119 transitions, 318 flow [2024-11-07 19:08:52,243 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 58 transitions, 159 flow [2024-11-07 19:08:52,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:08:52,244 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:08:52,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-07 19:08:52,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:08:52,246 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-07 19:08:52,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:08:52,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:52,246 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:08:52,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:08:52,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 536947283, now seen corresponding path program 1 times [2024-11-07 19:08:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151711671] [2024-11-07 19:08:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:52,260 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 19:08:52,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:52,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151711671] [2024-11-07 19:08:52,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151711671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:52,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:52,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:52,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247293596] [2024-11-07 19:08:52,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:52,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:08:52,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:52,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:08:52,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:08:52,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-07 19:08:52,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 159 flow. Second operand has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 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 19:08:52,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:52,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-07 19:08:52,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:08:58,291 INFO L124 PetriNetUnfolderBase]: 84655/108198 cut-off events. [2024-11-07 19:08:58,291 INFO L125 PetriNetUnfolderBase]: For 26992/26992 co-relation queries the response was YES. [2024-11-07 19:08:58,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216295 conditions, 108198 events. 84655/108198 cut-off events. For 26992/26992 co-relation queries the response was YES. Maximal size of possible extension queue 3774. Compared 644634 event pairs, 65538 based on Foata normal form. 12284/119458 useless extension candidates. Maximal degree in co-relation 216281. Up to 100352 conditions per place. [2024-11-07 19:08:59,130 INFO L140 encePairwiseOnDemand]: 110/119 looper letters, 28 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-07 19:08:59,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 191 flow [2024-11-07 19:08:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 19:08:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-07 19:08:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 133 transitions. [2024-11-07 19:08:59,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2024-11-07 19:08:59,131 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 159 flow. Second operand 2 states and 133 transitions. [2024-11-07 19:08:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 191 flow [2024-11-07 19:08:59,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 178 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:08:59,147 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 122 flow [2024-11-07 19:08:59,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-11-07 19:08:59,148 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2024-11-07 19:08:59,148 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 122 flow [2024-11-07 19:08:59,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 50.0) internal successors, (100), 2 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 19:08:59,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:08:59,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:08:59,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:08:59,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:08:59,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:08:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash -211440730, now seen corresponding path program 1 times [2024-11-07 19:08:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:08:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601440353] [2024-11-07 19:08:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:08:59,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:08:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:08:59,198 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 19:08:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:08:59,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601440353] [2024-11-07 19:08:59,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601440353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:08:59,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:08:59,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:08:59,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038434371] [2024-11-07 19:08:59,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:08:59,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:08:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:08:59,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:08:59,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:08:59,208 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-07 19:08:59,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 19:08:59,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:08:59,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-07 19:08:59,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:05,067 INFO L124 PetriNetUnfolderBase]: 87029/112963 cut-off events. [2024-11-07 19:09:05,067 INFO L125 PetriNetUnfolderBase]: For 5082/5082 co-relation queries the response was YES. [2024-11-07 19:09:05,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221185 conditions, 112963 events. 87029/112963 cut-off events. For 5082/5082 co-relation queries the response was YES. Maximal size of possible extension queue 4061. Compared 704775 event pairs, 21478 based on Foata normal form. 188/112989 useless extension candidates. Maximal degree in co-relation 221177. Up to 101893 conditions per place. [2024-11-07 19:09:06,136 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 40 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2024-11-07 19:09:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 64 transitions, 270 flow [2024-11-07 19:09:06,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 191 transitions. [2024-11-07 19:09:06,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5350140056022409 [2024-11-07 19:09:06,137 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 122 flow. Second operand 3 states and 191 transitions. [2024-11-07 19:09:06,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 64 transitions, 270 flow [2024-11-07 19:09:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 64 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:09:06,141 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 162 flow [2024-11-07 19:09:06,141 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-07 19:09:06,142 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-11-07 19:09:06,142 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 162 flow [2024-11-07 19:09:06,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 19:09:06,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:06,142 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:06,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:09:06,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:09:06,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2072609719, now seen corresponding path program 1 times [2024-11-07 19:09:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401745850] [2024-11-07 19:09:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:06,186 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 19:09:06,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:06,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401745850] [2024-11-07 19:09:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401745850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:06,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:06,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:09:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621118290] [2024-11-07 19:09:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:06,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:09:06,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:06,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:09:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:09:06,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-07 19:09:06,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:09:06,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:06,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-07 19:09:06,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:06,528 INFO L124 PetriNetUnfolderBase]: 2900/6135 cut-off events. [2024-11-07 19:09:06,528 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2024-11-07 19:09:06,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13499 conditions, 6135 events. 2900/6135 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 47720 event pairs, 648 based on Foata normal form. 6162/12226 useless extension candidates. Maximal degree in co-relation 13489. Up to 3945 conditions per place. [2024-11-07 19:09:06,568 INFO L140 encePairwiseOnDemand]: 107/119 looper letters, 29 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-11-07 19:09:06,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 283 flow [2024-11-07 19:09:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:09:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:09:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-07 19:09:06,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-11-07 19:09:06,570 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 162 flow. Second operand 3 states and 186 transitions. [2024-11-07 19:09:06,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 283 flow [2024-11-07 19:09:06,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:09:06,574 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 180 flow [2024-11-07 19:09:06,574 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-11-07 19:09:06,575 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-11-07 19:09:06,575 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 180 flow [2024-11-07 19:09:06,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 19:09:06,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:06,575 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:06,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:09:06,576 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:09:06,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash -592232358, now seen corresponding path program 1 times [2024-11-07 19:09:06,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:06,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132480784] [2024-11-07 19:09:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:06,639 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 19:09:06,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132480784] [2024-11-07 19:09:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132480784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:09:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336315522] [2024-11-07 19:09:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:06,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:09:06,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:09:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:09:06,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-07 19:09:06,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 19:09:06,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:06,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-07 19:09:06,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:07,194 INFO L124 PetriNetUnfolderBase]: 4045/8235 cut-off events. [2024-11-07 19:09:07,194 INFO L125 PetriNetUnfolderBase]: For 2462/2462 co-relation queries the response was YES. [2024-11-07 19:09:07,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21131 conditions, 8235 events. 4045/8235 cut-off events. For 2462/2462 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65502 event pairs, 162 based on Foata normal form. 45/8269 useless extension candidates. Maximal degree in co-relation 21121. Up to 5638 conditions per place. [2024-11-07 19:09:07,244 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 58 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-11-07 19:09:07,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 87 transitions, 478 flow [2024-11-07 19:09:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:09:07,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:09:07,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-07 19:09:07,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5504201680672269 [2024-11-07 19:09:07,246 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 180 flow. Second operand 4 states and 262 transitions. [2024-11-07 19:09:07,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 87 transitions, 478 flow [2024-11-07 19:09:07,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 447 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:09:07,255 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 232 flow [2024-11-07 19:09:07,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-07 19:09:07,256 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-07 19:09:07,256 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 232 flow [2024-11-07 19:09:07,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 19:09:07,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:07,257 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:07,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 19:09:07,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:09:07,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:07,257 INFO L85 PathProgramCache]: Analyzing trace with hash -257833893, now seen corresponding path program 1 times [2024-11-07 19:09:07,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:07,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013252834] [2024-11-07 19:09:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:07,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:07,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013252834] [2024-11-07 19:09:07,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013252834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:09:07,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386186000] [2024-11-07 19:09:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:07,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:09:07,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:09:07,356 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 19:09:07,359 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 19:09:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:07,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-07 19:09:07,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:09:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:07,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:09:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:09:07,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386186000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:09:07,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:09:07,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 19:09:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934751326] [2024-11-07 19:09:07,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:09:07,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:09:07,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:09:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:09:07,798 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 119 [2024-11-07 19:09:07,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 232 flow. Second operand has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 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 19:09:07,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:07,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 119 [2024-11-07 19:09:07,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:09:09,391 INFO L124 PetriNetUnfolderBase]: 10055/20384 cut-off events. [2024-11-07 19:09:09,391 INFO L125 PetriNetUnfolderBase]: For 9525/9529 co-relation queries the response was YES. [2024-11-07 19:09:09,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50219 conditions, 20384 events. 10055/20384 cut-off events. For 9525/9529 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 186255 event pairs, 2115 based on Foata normal form. 171/20544 useless extension candidates. Maximal degree in co-relation 50207. Up to 6387 conditions per place. [2024-11-07 19:09:09,502 INFO L140 encePairwiseOnDemand]: 112/119 looper letters, 59 selfloop transitions, 26 changer transitions 0/103 dead transitions. [2024-11-07 19:09:09,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 604 flow [2024-11-07 19:09:09,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:09:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:09:09,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2024-11-07 19:09:09,504 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5310924369747899 [2024-11-07 19:09:09,504 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 232 flow. Second operand 5 states and 316 transitions. [2024-11-07 19:09:09,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 604 flow [2024-11-07 19:09:09,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 103 transitions, 582 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 19:09:09,515 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 339 flow [2024-11-07 19:09:09,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-11-07 19:09:09,515 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-07 19:09:09,515 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 339 flow [2024-11-07 19:09:09,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 51.54545454545455) internal successors, (567), 11 states have internal predecessors, (567), 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 19:09:09,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:09,516 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:09:09,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 19:09:09,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:09:09,717 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-11-07 19:09:09,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1881147712, now seen corresponding path program 1 times [2024-11-07 19:09:09,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:09,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772386773] [2024-11-07 19:09:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:09,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:09,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:09:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:09:09,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:09:09,748 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:09:09,748 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (6 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2024-11-07 19:09:09,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2024-11-07 19:09:09,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 19:09:09,750 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-07 19:09:09,750 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:09:09,750 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-07 19:09:09,787 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:09:09,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 141 transitions, 390 flow [2024-11-07 19:09:09,796 INFO L124 PetriNetUnfolderBase]: 9/94 cut-off events. [2024-11-07 19:09:09,796 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-07 19:09:09,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 94 events. 9/94 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 264 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 123. Up to 7 conditions per place. [2024-11-07 19:09:09,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 141 transitions, 390 flow [2024-11-07 19:09:09,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 187 flow [2024-11-07 19:09:09,798 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:09:09,798 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;@5ceaca0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:09:09,798 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-07 19:09:09,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:09:09,799 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-07 19:09:09,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:09:09,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:09:09,799 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:09:09,799 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 7 more)] === [2024-11-07 19:09:09,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:09:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash 672129899, now seen corresponding path program 1 times [2024-11-07 19:09:09,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:09:09,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69527559] [2024-11-07 19:09:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:09:09,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:09:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:09:09,812 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 19:09:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:09:09,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69527559] [2024-11-07 19:09:09,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69527559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:09:09,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:09:09,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:09:09,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373782884] [2024-11-07 19:09:09,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:09:09,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 19:09:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:09:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 19:09:09,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 19:09:09,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 141 [2024-11-07 19:09:09,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 187 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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 19:09:09,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:09:09,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 141 [2024-11-07 19:09:09,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand