./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/exponential-64.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-theta/exponential-64.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', 'c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc'] 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-theta/exponential-64.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 c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:41:56,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:41:56,721 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:41:56,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:41:56,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:41:56,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:41:56,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:41:56,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:41:56,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:41:56,761 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:41:56,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:41:56,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:41:56,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:41:56,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:41:56,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:41:56,763 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:41:56,764 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:41:56,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:41:56,765 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:41:56,765 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:41:56,765 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:41:56,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:41:56,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:41:56,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:41:56,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:41:56,766 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 -> c5877a70884380b10e463fa3cfc6b55a5014f8a8b2ecd81a270409b479a9f5bc [2024-11-07 19:41:57,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:41:57,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:41:57,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:41:57,058 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:41:57,058 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:41:57,059 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-07 19:41:58,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:41:58,632 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:41:58,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/exponential-64.i [2024-11-07 19:41:58,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df10d11ed/801ea5943ec64987abec7af38135525b/FLAG2dc1f3c53 [2024-11-07 19:41:58,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/df10d11ed/801ea5943ec64987abec7af38135525b [2024-11-07 19:41:58,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:41:58,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:41:58,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:41:58,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:41:58,899 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:41:58,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:41:58" (1/1) ... [2024-11-07 19:41:58,900 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763360b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:58, skipping insertion in model container [2024-11-07 19:41:58,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:41:58" (1/1) ... [2024-11-07 19:41:58,931 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:41:59,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:41:59,179 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:41:59,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:41:59,287 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:41:59,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59 WrapperNode [2024-11-07 19:41:59,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:41:59,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:41:59,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:41:59,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:41:59,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,317 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2024-11-07 19:41:59,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:41:59,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:41:59,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:41:59,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:41:59,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,330 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,344 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 19:41:59,345 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:41:59,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:41:59,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:41:59,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:41:59,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (1/1) ... [2024-11-07 19:41:59,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:41:59,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:41:59,403 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 19:41:59,405 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 19:41:59,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:41:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-07 19:41:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-07 19:41:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-07 19:41:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-07 19:41:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:41:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:41:59,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:41:59,429 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 19:41:59,532 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:41:59,534 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:41:59,701 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:41:59,701 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:41:59,823 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:41:59,825 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:41:59,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:41:59 BoogieIcfgContainer [2024-11-07 19:41:59,825 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:41:59,827 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:41:59,828 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:41:59,833 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:41:59,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:41:58" (1/3) ... [2024-11-07 19:41:59,834 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fade7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:41:59, skipping insertion in model container [2024-11-07 19:41:59,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:41:59" (2/3) ... [2024-11-07 19:41:59,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fade7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:41:59, skipping insertion in model container [2024-11-07 19:41:59,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:41:59" (3/3) ... [2024-11-07 19:41:59,836 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-64.i [2024-11-07 19:41:59,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:41:59,850 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 19:41:59,850 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:41:59,919 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:41:59,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2024-11-07 19:41:59,985 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2024-11-07 19:41:59,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:41:59,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 6/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 83 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 25. Up to 4 conditions per place. [2024-11-07 19:41:59,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2024-11-07 19:41:59,994 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 25 transitions, 57 flow [2024-11-07 19:42:00,004 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:00,020 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:00,020 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:00,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:00,031 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:00,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:00,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:00,032 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:00,033 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:00,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:00,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1813756647, now seen corresponding path program 1 times [2024-11-07 19:42:00,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456164939] [2024-11-07 19:42:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:00,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:00,261 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 19:42:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:00,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456164939] [2024-11-07 19:42:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456164939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:00,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:00,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:00,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991963558] [2024-11-07 19:42:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:00,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:00,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:00,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 27 [2024-11-07 19:42:00,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:42:00,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:00,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 27 [2024-11-07 19:42:00,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:00,354 INFO L124 PetriNetUnfolderBase]: 31/91 cut-off events. [2024-11-07 19:42:00,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 91 events. 31/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 350 event pairs, 13 based on Foata normal form. 8/85 useless extension candidates. Maximal degree in co-relation 150. Up to 53 conditions per place. [2024-11-07 19:42:00,357 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 14 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2024-11-07 19:42:00,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 89 flow [2024-11-07 19:42:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-07 19:42:00,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-07 19:42:00,370 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 57 flow. Second operand 3 states and 49 transitions. [2024-11-07 19:42:00,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 89 flow [2024-11-07 19:42:00,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:00,378 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 58 flow [2024-11-07 19:42:00,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2024-11-07 19:42:00,385 INFO L277 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-11-07 19:42:00,386 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 58 flow [2024-11-07 19:42:00,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 19:42:00,387 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:00,387 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:00,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:42:00,388 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:00,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 641854484, now seen corresponding path program 1 times [2024-11-07 19:42:00,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:00,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614123833] [2024-11-07 19:42:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:00,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:00,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:00,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:00,462 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:00,463 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:00,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:00,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:00,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:00,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:42:00,465 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-07 19:42:00,467 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:00,467 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:42:00,491 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:00,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 35 transitions, 90 flow [2024-11-07 19:42:00,507 INFO L124 PetriNetUnfolderBase]: 9/64 cut-off events. [2024-11-07 19:42:00,507 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 19:42:00,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 64 events. 9/64 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2024-11-07 19:42:00,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 35 transitions, 90 flow [2024-11-07 19:42:00,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2024-11-07 19:42:00,510 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:00,510 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:00,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:00,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:00,515 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:00,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:00,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:00,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:00,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -778335687, now seen corresponding path program 1 times [2024-11-07 19:42:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323617676] [2024-11-07 19:42:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:00,589 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 19:42:00,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:00,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323617676] [2024-11-07 19:42:00,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323617676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:00,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011650169] [2024-11-07 19:42:00,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:00,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:00,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-07 19:42:00,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 19:42:00,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:00,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-07 19:42:00,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:00,763 INFO L124 PetriNetUnfolderBase]: 283/571 cut-off events. [2024-11-07 19:42:00,764 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-07 19:42:00,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 571 events. 283/571 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3203 event pairs, 111 based on Foata normal form. 40/541 useless extension candidates. Maximal degree in co-relation 444. Up to 433 conditions per place. [2024-11-07 19:42:00,774 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-07 19:42:00,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 132 flow [2024-11-07 19:42:00,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-07 19:42:00,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-11-07 19:42:00,776 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 84 flow. Second operand 3 states and 67 transitions. [2024-11-07 19:42:00,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 132 flow [2024-11-07 19:42:00,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 131 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:00,778 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 89 flow [2024-11-07 19:42:00,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-11-07 19:42:00,779 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-11-07 19:42:00,782 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 89 flow [2024-11-07 19:42:00,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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 19:42:00,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:00,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:00,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:42:00,783 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:00,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash 274581387, now seen corresponding path program 1 times [2024-11-07 19:42:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147262260] [2024-11-07 19:42:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:00,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:00,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147262260] [2024-11-07 19:42:00,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147262260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:00,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:00,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:00,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13020604] [2024-11-07 19:42:00,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:00,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:00,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:00,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:00,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-07 19:42:00,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 19:42:00,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:00,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-07 19:42:00,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:01,030 INFO L124 PetriNetUnfolderBase]: 319/627 cut-off events. [2024-11-07 19:42:01,031 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 19:42:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 627 events. 319/627 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3649 event pairs, 263 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 512. Up to 445 conditions per place. [2024-11-07 19:42:01,039 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 20 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-07 19:42:01,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 145 flow [2024-11-07 19:42:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:01,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:01,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-11-07 19:42:01,042 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-11-07 19:42:01,043 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 89 flow. Second operand 4 states and 79 transitions. [2024-11-07 19:42:01,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 145 flow [2024-11-07 19:42:01,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:01,046 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 101 flow [2024-11-07 19:42:01,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2024-11-07 19:42:01,047 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-11-07 19:42:01,048 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 101 flow [2024-11-07 19:42:01,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 19:42:01,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:01,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:01,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:42:01,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:01,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:01,050 INFO L85 PathProgramCache]: Analyzing trace with hash -78730911, now seen corresponding path program 1 times [2024-11-07 19:42:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:01,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879905773] [2024-11-07 19:42:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:42:01,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:01,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879905773] [2024-11-07 19:42:01,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879905773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:01,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:01,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:01,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771132788] [2024-11-07 19:42:01,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:01,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:01,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:01,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:01,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-11-07 19:42:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:42:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-11-07 19:42:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:01,194 INFO L124 PetriNetUnfolderBase]: 319/607 cut-off events. [2024-11-07 19:42:01,194 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-07 19:42:01,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 607 events. 319/607 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3415 event pairs, 299 based on Foata normal form. 20/569 useless extension candidates. Maximal degree in co-relation 550. Up to 501 conditions per place. [2024-11-07 19:42:01,200 INFO L140 encePairwiseOnDemand]: 33/35 looper letters, 17 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2024-11-07 19:42:01,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 137 flow [2024-11-07 19:42:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-07 19:42:01,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-07 19:42:01,201 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 101 flow. Second operand 3 states and 57 transitions. [2024-11-07 19:42:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 137 flow [2024-11-07 19:42:01,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 131 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:01,204 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 93 flow [2024-11-07 19:42:01,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2024-11-07 19:42:01,205 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-11-07 19:42:01,206 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 93 flow [2024-11-07 19:42:01,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 19:42:01,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:01,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:01,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:42:01,207 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:01,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -78730272, now seen corresponding path program 1 times [2024-11-07 19:42:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:01,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469045053] [2024-11-07 19:42:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:01,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469045053] [2024-11-07 19:42:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469045053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229252836] [2024-11-07 19:42:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:01,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:01,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:01,318 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 19:42:01,320 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 19:42:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:01,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:01,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:01,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:01,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:01,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229252836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:01,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:01,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 19:42:01,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447973755] [2024-11-07 19:42:01,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:01,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:42:01,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:01,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:42:01,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:01,510 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-11-07 19:42:01,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 93 flow. Second operand has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 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 19:42:01,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:01,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-11-07 19:42:01,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:01,579 INFO L124 PetriNetUnfolderBase]: 119/247 cut-off events. [2024-11-07 19:42:01,580 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-07 19:42:01,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 247 events. 119/247 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1140 event pairs, 15 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 512. Up to 96 conditions per place. [2024-11-07 19:42:01,583 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-07 19:42:01,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 131 flow [2024-11-07 19:42:01,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:42:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:42:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-11-07 19:42:01,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-11-07 19:42:01,585 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 93 flow. Second operand 5 states and 94 transitions. [2024-11-07 19:42:01,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 131 flow [2024-11-07 19:42:01,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:01,587 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 74 flow [2024-11-07 19:42:01,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2024-11-07 19:42:01,587 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-07 19:42:01,587 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 74 flow [2024-11-07 19:42:01,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.0) internal successors, (136), 8 states have internal predecessors, (136), 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 19:42:01,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:01,588 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:01,608 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 19:42:01,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:01,794 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:01,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2014220798, now seen corresponding path program 1 times [2024-11-07 19:42:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:01,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397435006] [2024-11-07 19:42:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:01,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:01,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:01,826 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:01,827 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:01,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:01,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:01,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:01,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:42:01,827 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:42:01,828 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:01,828 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:42:01,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:01,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 122 flow [2024-11-07 19:42:01,861 INFO L124 PetriNetUnfolderBase]: 12/88 cut-off events. [2024-11-07 19:42:01,862 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:42:01,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 88 events. 12/88 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 212 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2024-11-07 19:42:01,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 43 transitions, 122 flow [2024-11-07 19:42:01,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 41 transitions, 115 flow [2024-11-07 19:42:01,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:01,867 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:01,867 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:01,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:01,870 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:01,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:01,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:01,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:01,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:01,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:01,871 INFO L85 PathProgramCache]: Analyzing trace with hash 493752921, now seen corresponding path program 1 times [2024-11-07 19:42:01,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:01,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168045401] [2024-11-07 19:42:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:01,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:01,919 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 19:42:01,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:01,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168045401] [2024-11-07 19:42:01,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168045401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:01,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:01,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:01,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207835518] [2024-11-07 19:42:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:01,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:01,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:01,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-07 19:42:01,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:01,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:01,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-07 19:42:01,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:02,228 INFO L124 PetriNetUnfolderBase]: 1803/3003 cut-off events. [2024-11-07 19:42:02,229 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-07 19:42:02,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5722 conditions, 3003 events. 1803/3003 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18879 event pairs, 1385 based on Foata normal form. 168/2846 useless extension candidates. Maximal degree in co-relation 2516. Up to 2465 conditions per place. [2024-11-07 19:42:02,257 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 24 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-07 19:42:02,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 171 flow [2024-11-07 19:42:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2024-11-07 19:42:02,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2024-11-07 19:42:02,259 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 115 flow. Second operand 3 states and 83 transitions. [2024-11-07 19:42:02,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 171 flow [2024-11-07 19:42:02,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 166 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:02,264 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 116 flow [2024-11-07 19:42:02,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-07 19:42:02,265 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-07 19:42:02,265 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 116 flow [2024-11-07 19:42:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:02,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:02,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:02,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:42:02,269 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:02,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:02,269 INFO L85 PathProgramCache]: Analyzing trace with hash -281942685, now seen corresponding path program 1 times [2024-11-07 19:42:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:02,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173680786] [2024-11-07 19:42:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173680786] [2024-11-07 19:42:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173680786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:02,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64255475] [2024-11-07 19:42:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:02,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:02,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:02,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-07 19:42:02,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 19:42:02,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:02,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-07 19:42:02,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:02,683 INFO L124 PetriNetUnfolderBase]: 2031/3315 cut-off events. [2024-11-07 19:42:02,683 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-11-07 19:42:02,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6472 conditions, 3315 events. 2031/3315 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20932 event pairs, 1719 based on Foata normal form. 0/3106 useless extension candidates. Maximal degree in co-relation 2848. Up to 2477 conditions per place. [2024-11-07 19:42:02,710 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-07 19:42:02,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 46 transitions, 188 flow [2024-11-07 19:42:02,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-07 19:42:02,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5872093023255814 [2024-11-07 19:42:02,714 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 116 flow. Second operand 4 states and 101 transitions. [2024-11-07 19:42:02,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 46 transitions, 188 flow [2024-11-07 19:42:02,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:02,717 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 128 flow [2024-11-07 19:42:02,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-07 19:42:02,718 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-11-07 19:42:02,718 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 128 flow [2024-11-07 19:42:02,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 19:42:02,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:02,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:02,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:42:02,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:02,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash -151107916, now seen corresponding path program 1 times [2024-11-07 19:42:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184480110] [2024-11-07 19:42:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:42:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184480110] [2024-11-07 19:42:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184480110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:02,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907312198] [2024-11-07 19:42:02,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:02,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:02,763 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 43 [2024-11-07 19:42:02,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:42:02,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:02,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 43 [2024-11-07 19:42:02,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:03,096 INFO L124 PetriNetUnfolderBase]: 2031/3231 cut-off events. [2024-11-07 19:42:03,096 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-07 19:42:03,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6806 conditions, 3231 events. 2031/3231 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19902 event pairs, 1947 based on Foata normal form. 84/3066 useless extension candidates. Maximal degree in co-relation 3014. Up to 2789 conditions per place. [2024-11-07 19:42:03,124 INFO L140 encePairwiseOnDemand]: 41/43 looper letters, 21 selfloop transitions, 1 changer transitions 1/39 dead transitions. [2024-11-07 19:42:03,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 39 transitions, 172 flow [2024-11-07 19:42:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-07 19:42:03,126 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-07 19:42:03,126 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 128 flow. Second operand 3 states and 73 transitions. [2024-11-07 19:42:03,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 39 transitions, 172 flow [2024-11-07 19:42:03,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 166 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:03,136 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 120 flow [2024-11-07 19:42:03,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2024-11-07 19:42:03,139 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-07 19:42:03,139 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 120 flow [2024-11-07 19:42:03,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:42:03,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:42:03,140 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -151107277, now seen corresponding path program 1 times [2024-11-07 19:42:03,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771185437] [2024-11-07 19:42:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:03,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771185437] [2024-11-07 19:42:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771185437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:03,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929008492] [2024-11-07 19:42:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:03,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:03,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 19:42:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:03,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:03,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:03,337 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:03,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929008492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:03,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 19:42:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924732124] [2024-11-07 19:42:03,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:03,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:42:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:42:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:03,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 43 [2024-11-07 19:42:03,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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 19:42:03,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:03,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 43 [2024-11-07 19:42:03,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:03,521 INFO L124 PetriNetUnfolderBase]: 807/1335 cut-off events. [2024-11-07 19:42:03,522 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-07 19:42:03,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1335 events. 807/1335 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7307 event pairs, 135 based on Foata normal form. 84/1374 useless extension candidates. Maximal degree in co-relation 2752. Up to 528 conditions per place. [2024-11-07 19:42:03,531 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 31 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-11-07 19:42:03,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 204 flow [2024-11-07 19:42:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:03,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-07 19:42:03,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5658914728682171 [2024-11-07 19:42:03,533 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 120 flow. Second operand 6 states and 146 transitions. [2024-11-07 19:42:03,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 204 flow [2024-11-07 19:42:03,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:03,535 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 107 flow [2024-11-07 19:42:03,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2024-11-07 19:42:03,536 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-07 19:42:03,537 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 107 flow [2024-11-07 19:42:03,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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 19:42:03,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,537 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:03,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:03,738 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash 214581830, now seen corresponding path program 1 times [2024-11-07 19:42:03,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609357527] [2024-11-07 19:42:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:03,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:03,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:03,777 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:03,777 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:03,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:03,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:03,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:03,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:42:03,778 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:42:03,778 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:03,778 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-07 19:42:03,810 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:03,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 51 transitions, 158 flow [2024-11-07 19:42:03,819 INFO L124 PetriNetUnfolderBase]: 15/112 cut-off events. [2024-11-07 19:42:03,819 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-07 19:42:03,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 112 events. 15/112 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 289 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 119. Up to 10 conditions per place. [2024-11-07 19:42:03,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 51 transitions, 158 flow [2024-11-07 19:42:03,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 49 transitions, 150 flow [2024-11-07 19:42:03,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:03,822 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:03,822 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:03,824 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:03,824 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:03,824 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:03,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:03,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:03,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:03,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2002509177, now seen corresponding path program 1 times [2024-11-07 19:42:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:03,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151111908] [2024-11-07 19:42:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:03,857 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 19:42:03,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:03,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151111908] [2024-11-07 19:42:03,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151111908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:03,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:03,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:03,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283604605] [2024-11-07 19:42:03,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:03,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:03,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:03,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-07 19:42:03,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 19:42:03,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:03,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-07 19:42:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:05,165 INFO L124 PetriNetUnfolderBase]: 9931/14779 cut-off events. [2024-11-07 19:42:05,166 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-07 19:42:05,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28636 conditions, 14779 events. 9931/14779 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 98366 event pairs, 8233 based on Foata normal form. 680/14101 useless extension candidates. Maximal degree in co-relation 12948. Up to 12641 conditions per place. [2024-11-07 19:42:05,420 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 28 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-11-07 19:42:05,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 214 flow [2024-11-07 19:42:05,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-11-07 19:42:05,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-11-07 19:42:05,422 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 150 flow. Second operand 3 states and 99 transitions. [2024-11-07 19:42:05,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 214 flow [2024-11-07 19:42:05,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 51 transitions, 201 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:05,434 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 143 flow [2024-11-07 19:42:05,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2024-11-07 19:42:05,435 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-11-07 19:42:05,435 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 143 flow [2024-11-07 19:42:05,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 19:42:05,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:05,435 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:05,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:42:05,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:05,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:05,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1376707005, now seen corresponding path program 1 times [2024-11-07 19:42:05,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:05,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961417004] [2024-11-07 19:42:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:05,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:05,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:05,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961417004] [2024-11-07 19:42:05,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961417004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:05,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672531921] [2024-11-07 19:42:05,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:05,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:05,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:05,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:05,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-07 19:42:05,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:05,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:05,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-07 19:42:05,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:06,766 INFO L124 PetriNetUnfolderBase]: 11183/16371 cut-off events. [2024-11-07 19:42:06,766 INFO L125 PetriNetUnfolderBase]: For 1830/1830 co-relation queries the response was YES. [2024-11-07 19:42:06,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32074 conditions, 16371 events. 11183/16371 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 108062 event pairs, 9591 based on Foata normal form. 0/15521 useless extension candidates. Maximal degree in co-relation 14496. Up to 12653 conditions per place. [2024-11-07 19:42:06,909 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 32 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-11-07 19:42:06,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 231 flow [2024-11-07 19:42:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-07 19:42:06,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-11-07 19:42:06,910 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 143 flow. Second operand 4 states and 123 transitions. [2024-11-07 19:42:06,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 231 flow [2024-11-07 19:42:06,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:06,918 INFO L231 Difference]: Finished difference. Result has 68 places, 48 transitions, 155 flow [2024-11-07 19:42:06,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=48} [2024-11-07 19:42:06,919 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2024-11-07 19:42:06,919 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 48 transitions, 155 flow [2024-11-07 19:42:06,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:06,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:06,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:42:06,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:06,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash 270936583, now seen corresponding path program 1 times [2024-11-07 19:42:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:06,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694505499] [2024-11-07 19:42:06,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:42:06,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:06,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694505499] [2024-11-07 19:42:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694505499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:06,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:06,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:06,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007963799] [2024-11-07 19:42:06,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:06,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:06,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:06,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:06,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 51 [2024-11-07 19:42:06,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 48 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:06,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:06,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 51 [2024-11-07 19:42:06,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:07,982 INFO L124 PetriNetUnfolderBase]: 11183/16031 cut-off events. [2024-11-07 19:42:07,982 INFO L125 PetriNetUnfolderBase]: For 2170/2170 co-relation queries the response was YES. [2024-11-07 19:42:08,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33432 conditions, 16031 events. 11183/16031 cut-off events. For 2170/2170 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 102274 event pairs, 10843 based on Foata normal form. 340/15353 useless extension candidates. Maximal degree in co-relation 15174. Up to 14245 conditions per place. [2024-11-07 19:42:08,128 INFO L140 encePairwiseOnDemand]: 49/51 looper letters, 25 selfloop transitions, 1 changer transitions 1/47 dead transitions. [2024-11-07 19:42:08,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 47 transitions, 207 flow [2024-11-07 19:42:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-07 19:42:08,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2024-11-07 19:42:08,130 INFO L175 Difference]: Start difference. First operand has 68 places, 48 transitions, 155 flow. Second operand 3 states and 89 transitions. [2024-11-07 19:42:08,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 47 transitions, 207 flow [2024-11-07 19:42:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 47 transitions, 201 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:08,366 INFO L231 Difference]: Finished difference. Result has 67 places, 46 transitions, 147 flow [2024-11-07 19:42:08,366 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=46} [2024-11-07 19:42:08,366 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-07 19:42:08,370 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 46 transitions, 147 flow [2024-11-07 19:42:08,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:08,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:08,370 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:08,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:42:08,371 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:08,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:08,371 INFO L85 PathProgramCache]: Analyzing trace with hash 270937222, now seen corresponding path program 1 times [2024-11-07 19:42:08,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:08,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952189538] [2024-11-07 19:42:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:08,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:08,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:08,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952189538] [2024-11-07 19:42:08,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952189538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:08,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111150616] [2024-11-07 19:42:08,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:08,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:08,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:08,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:08,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 19:42:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:08,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:08,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:08,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:08,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111150616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:08,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:08,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 19:42:08,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494715485] [2024-11-07 19:42:08,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:08,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:42:08,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:42:08,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:08,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2024-11-07 19:42:08,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 46 transitions, 147 flow. Second operand has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 19:42:08,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:08,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2024-11-07 19:42:08,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:09,618 INFO L124 PetriNetUnfolderBase]: 8935/12855 cut-off events. [2024-11-07 19:42:09,618 INFO L125 PetriNetUnfolderBase]: For 1926/1926 co-relation queries the response was YES. [2024-11-07 19:42:09,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26316 conditions, 12855 events. 8935/12855 cut-off events. For 1926/1926 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 78720 event pairs, 927 based on Foata normal form. 84/12593 useless extension candidates. Maximal degree in co-relation 26300. Up to 6657 conditions per place. [2024-11-07 19:42:09,713 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 49 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-07 19:42:09,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 319 flow [2024-11-07 19:42:09,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:09,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:09,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2024-11-07 19:42:09,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-11-07 19:42:09,715 INFO L175 Difference]: Start difference. First operand has 67 places, 46 transitions, 147 flow. Second operand 6 states and 189 transitions. [2024-11-07 19:42:09,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 319 flow [2024-11-07 19:42:09,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:09,738 INFO L231 Difference]: Finished difference. Result has 74 places, 49 transitions, 186 flow [2024-11-07 19:42:09,738 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=74, PETRI_TRANSITIONS=49} [2024-11-07 19:42:09,738 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 10 predicate places. [2024-11-07 19:42:09,738 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 49 transitions, 186 flow [2024-11-07 19:42:09,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 19:42:09,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:09,739 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:09,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:42:09,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:09,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:09,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1912241560, now seen corresponding path program 1 times [2024-11-07 19:42:09,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:09,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401624067] [2024-11-07 19:42:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:09,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:09,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:09,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:09,984 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:09,984 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:09,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:09,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:09,985 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:09,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 19:42:09,985 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-07 19:42:09,986 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:09,988 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-07 19:42:10,022 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:10,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 59 transitions, 198 flow [2024-11-07 19:42:10,035 INFO L124 PetriNetUnfolderBase]: 18/136 cut-off events. [2024-11-07 19:42:10,035 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-11-07 19:42:10,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 136 events. 18/136 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 359 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 155. Up to 12 conditions per place. [2024-11-07 19:42:10,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 59 transitions, 198 flow [2024-11-07 19:42:10,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 57 transitions, 189 flow [2024-11-07 19:42:10,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:10,040 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:10,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:10,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:10,042 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:10,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:10,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:10,042 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:10,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:10,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash -547034215, now seen corresponding path program 1 times [2024-11-07 19:42:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835506264] [2024-11-07 19:42:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:10,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:10,077 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 19:42:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:10,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835506264] [2024-11-07 19:42:10,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835506264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:10,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615587383] [2024-11-07 19:42:10,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:10,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:10,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:10,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-07 19:42:10,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 19:42:10,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:10,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-07 19:42:10,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:14,471 INFO L124 PetriNetUnfolderBase]: 50635/70075 cut-off events. [2024-11-07 19:42:14,472 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-11-07 19:42:14,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137438 conditions, 70075 events. 50635/70075 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 2636. Compared 480250 event pairs, 38367 based on Foata normal form. 2728/67353 useless extension candidates. Maximal degree in co-relation 63252. Up to 61537 conditions per place. [2024-11-07 19:42:15,147 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-07 19:42:15,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 59 transitions, 261 flow [2024-11-07 19:42:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-11-07 19:42:15,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6497175141242938 [2024-11-07 19:42:15,149 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 189 flow. Second operand 3 states and 115 transitions. [2024-11-07 19:42:15,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 59 transitions, 261 flow [2024-11-07 19:42:15,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 59 transitions, 236 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:15,218 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 170 flow [2024-11-07 19:42:15,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2024-11-07 19:42:15,218 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2024-11-07 19:42:15,219 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 170 flow [2024-11-07 19:42:15,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 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 19:42:15,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:15,219 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:15,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 19:42:15,219 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:15,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:15,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1285255723, now seen corresponding path program 1 times [2024-11-07 19:42:15,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:15,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112174448] [2024-11-07 19:42:15,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:15,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:15,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:15,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:15,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112174448] [2024-11-07 19:42:15,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112174448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:15,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:15,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:42:15,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887347955] [2024-11-07 19:42:15,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:15,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:42:15,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:42:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:42:15,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-07 19:42:15,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 19:42:15,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:15,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-07 19:42:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:20,640 INFO L124 PetriNetUnfolderBase]: 57007/77811 cut-off events. [2024-11-07 19:42:20,640 INFO L125 PetriNetUnfolderBase]: For 11430/11430 co-relation queries the response was YES. [2024-11-07 19:42:20,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152908 conditions, 77811 events. 57007/77811 cut-off events. For 11430/11430 co-relation queries the response was YES. Maximal size of possible extension queue 2864. Compared 528096 event pairs, 40519 based on Foata normal form. 0/74401 useless extension candidates. Maximal degree in co-relation 70304. Up to 61549 conditions per place. [2024-11-07 19:42:21,211 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 38 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-11-07 19:42:21,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 66 transitions, 274 flow [2024-11-07 19:42:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:42:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:42:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-11-07 19:42:21,213 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.614406779661017 [2024-11-07 19:42:21,213 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 170 flow. Second operand 4 states and 145 transitions. [2024-11-07 19:42:21,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 66 transitions, 274 flow [2024-11-07 19:42:21,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:21,231 INFO L231 Difference]: Finished difference. Result has 80 places, 56 transitions, 182 flow [2024-11-07 19:42:21,231 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=80, PETRI_TRANSITIONS=56} [2024-11-07 19:42:21,231 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2024-11-07 19:42:21,231 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 56 transitions, 182 flow [2024-11-07 19:42:21,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 19:42:21,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:21,232 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:21,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 19:42:21,232 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:21,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1187402586, now seen corresponding path program 1 times [2024-11-07 19:42:21,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899834674] [2024-11-07 19:42:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:42:21,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:21,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899834674] [2024-11-07 19:42:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899834674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:21,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:21,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:42:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242192103] [2024-11-07 19:42:21,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:21,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:21,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 59 [2024-11-07 19:42:21,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 56 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:21,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:21,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 59 [2024-11-07 19:42:21,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:26,544 INFO L124 PetriNetUnfolderBase]: 57007/76447 cut-off events. [2024-11-07 19:42:26,544 INFO L125 PetriNetUnfolderBase]: For 12794/12794 co-relation queries the response was YES. [2024-11-07 19:42:26,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158362 conditions, 76447 events. 57007/76447 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 496352 event pairs, 55643 based on Foata normal form. 1364/73721 useless extension candidates. Maximal degree in co-relation 73030. Up to 69285 conditions per place. [2024-11-07 19:42:27,087 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 29 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2024-11-07 19:42:27,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 55 transitions, 242 flow [2024-11-07 19:42:27,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:42:27,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:42:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-11-07 19:42:27,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-11-07 19:42:27,088 INFO L175 Difference]: Start difference. First operand has 80 places, 56 transitions, 182 flow. Second operand 3 states and 105 transitions. [2024-11-07 19:42:27,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 55 transitions, 242 flow [2024-11-07 19:42:27,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 55 transitions, 236 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:42:27,696 INFO L231 Difference]: Finished difference. Result has 79 places, 54 transitions, 174 flow [2024-11-07 19:42:27,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2024-11-07 19:42:27,696 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2024-11-07 19:42:27,696 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 174 flow [2024-11-07 19:42:27,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:42:27,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:27,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:27,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 19:42:27,697 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:27,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1187403225, now seen corresponding path program 1 times [2024-11-07 19:42:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48217434] [2024-11-07 19:42:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:27,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48217434] [2024-11-07 19:42:27,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48217434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:27,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471304751] [2024-11-07 19:42:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:27,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:27,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:27,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:27,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 19:42:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:27,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 19:42:27,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:27,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471304751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:27,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-07 19:42:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879061053] [2024-11-07 19:42:27,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:27,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:42:27,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:27,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:42:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:42:27,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-07 19:42:27,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 174 flow. Second operand has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 19:42:27,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:27,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-07 19:42:27,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:31,830 INFO L124 PetriNetUnfolderBase]: 49639/67127 cut-off events. [2024-11-07 19:42:31,830 INFO L125 PetriNetUnfolderBase]: For 13356/13356 co-relation queries the response was YES. [2024-11-07 19:42:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136910 conditions, 67127 events. 49639/67127 cut-off events. For 13356/13356 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 435952 event pairs, 8337 based on Foata normal form. 84/64225 useless extension candidates. Maximal degree in co-relation 136892. Up to 38401 conditions per place. [2024-11-07 19:42:32,310 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 55 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-11-07 19:42:32,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 85 transitions, 362 flow [2024-11-07 19:42:32,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:42:32,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:42:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-11-07 19:42:32,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6186440677966102 [2024-11-07 19:42:32,312 INFO L175 Difference]: Start difference. First operand has 79 places, 54 transitions, 174 flow. Second operand 6 states and 219 transitions. [2024-11-07 19:42:32,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 85 transitions, 362 flow [2024-11-07 19:42:32,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 85 transitions, 361 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:42:32,457 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 213 flow [2024-11-07 19:42:32,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2024-11-07 19:42:32,458 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2024-11-07 19:42:32,458 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 213 flow [2024-11-07 19:42:32,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.0) internal successors, (232), 8 states have internal predecessors, (232), 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 19:42:32,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:32,458 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:32,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:42:32,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-07 19:42:32,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:32,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1416873895, now seen corresponding path program 1 times [2024-11-07 19:42:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187634890] [2024-11-07 19:42:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:32,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187634890] [2024-11-07 19:42:32,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187634890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:42:32,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914498018] [2024-11-07 19:42:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:42:32,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:42:32,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:42:32,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 19:42:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:32,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:42:32,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:42:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:33,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:42:33,259 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:42:33,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914498018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:42:33,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:42:33,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-11-07 19:42:33,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098024668] [2024-11-07 19:42:33,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:42:33,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:42:33,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:33,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:42:33,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:42:33,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2024-11-07 19:42:33,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 213 flow. Second operand has 17 states, 17 states have (on average 30.058823529411764) internal successors, (511), 17 states have internal predecessors, (511), 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 19:42:33,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:33,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2024-11-07 19:42:33,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:42:35,255 INFO L124 PetriNetUnfolderBase]: 23783/32311 cut-off events. [2024-11-07 19:42:35,255 INFO L125 PetriNetUnfolderBase]: For 20766/20766 co-relation queries the response was YES. [2024-11-07 19:42:35,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71372 conditions, 32311 events. 23783/32311 cut-off events. For 20766/20766 co-relation queries the response was YES. Maximal size of possible extension queue 1249. Compared 196583 event pairs, 1383 based on Foata normal form. 1280/33155 useless extension candidates. Maximal degree in co-relation 71355. Up to 13568 conditions per place. [2024-11-07 19:42:35,486 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 61 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-11-07 19:42:35,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 411 flow [2024-11-07 19:42:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:42:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:42:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-11-07 19:42:35,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.586864406779661 [2024-11-07 19:42:35,488 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 213 flow. Second operand 8 states and 277 transitions. [2024-11-07 19:42:35,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 411 flow [2024-11-07 19:42:35,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 390 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-07 19:42:35,528 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 183 flow [2024-11-07 19:42:35,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=183, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2024-11-07 19:42:35,529 INFO L277 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-07 19:42:35,529 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 183 flow [2024-11-07 19:42:35,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.058823529411764) internal successors, (511), 17 states have internal predecessors, (511), 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 19:42:35,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:35,529 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:42:35,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 19:42:35,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-07 19:42:35,730 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:35,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1821035128, now seen corresponding path program 1 times [2024-11-07 19:42:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153237202] [2024-11-07 19:42:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:35,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:42:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:42:35,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:42:35,762 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:42:35,762 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-07 19:42:35,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-07 19:42:35,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-07 19:42:35,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-07 19:42:35,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 19:42:35,763 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:35,763 WARN L244 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:42:35,766 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-11-07 19:42:35,795 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-07 19:42:35,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 67 transitions, 242 flow [2024-11-07 19:42:35,804 INFO L124 PetriNetUnfolderBase]: 21/160 cut-off events. [2024-11-07 19:42:35,804 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-07 19:42:35,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 160 events. 21/160 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 193. Up to 14 conditions per place. [2024-11-07 19:42:35,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 67 transitions, 242 flow [2024-11-07 19:42:35,805 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 65 transitions, 232 flow [2024-11-07 19:42:35,806 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:42:35,806 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;@434005c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:42:35,806 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-07 19:42:35,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:42:35,808 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-07 19:42:35,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:42:35,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:42:35,808 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:42:35,808 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-07 19:42:35,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:42:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1435057337, now seen corresponding path program 1 times [2024-11-07 19:42:35,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:42:35,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839952357] [2024-11-07 19:42:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:42:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:42:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:42:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:42:35,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:42:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839952357] [2024-11-07 19:42:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839952357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:42:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:42:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:42:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630701487] [2024-11-07 19:42:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:42:35,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:42:35,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:42:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:42:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:42:35,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 67 [2024-11-07 19:42:35,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 232 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 19:42:35,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:42:35,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 67 [2024-11-07 19:42:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand