./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/stack_longer-2.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/stack_longer-2.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', '402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688'] 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/stack_longer-2.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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:06:25,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:06:25,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:06:25,477 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:06:25,477 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:06:25,496 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:06:25,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:06:25,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:06:25,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:06:25,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:06:25,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:06:25,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:06:25,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:06:25,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:06:25,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:06:25,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:06:25,497 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:06:25,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:06:25,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:06:25,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:06:25,499 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:06:25,499 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:06:25,500 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:06:25,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:06:25,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:06:25,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:06:25,502 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:06:25,502 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 -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2024-11-07 19:06:25,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:06:25,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:06:25,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:06:25,729 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:06:25,729 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:06:25,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-07 19:06:26,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:06:27,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:06:27,189 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/stack_longer-2.i [2024-11-07 19:06:27,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebd2df0a6/bd0a3a91b943488485d0b30969a9d733/FLAG6ec7cb1c2 [2024-11-07 19:06:27,218 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebd2df0a6/bd0a3a91b943488485d0b30969a9d733 [2024-11-07 19:06:27,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:06:27,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:06:27,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:06:27,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:06:27,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:06:27,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14099503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27, skipping insertion in model container [2024-11-07 19:06:27,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,266 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:06:27,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:06:27,566 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:06:27,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:06:27,777 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:06:27,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27 WrapperNode [2024-11-07 19:06:27,778 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:06:27,779 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:06:27,779 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:06:27,779 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:06:27,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,879 INFO L138 Inliner]: procedures = 277, calls = 431, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 549 [2024-11-07 19:06:27,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:06:27,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:06:27,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:06:27,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:06:27,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,931 INFO L175 MemorySlicer]: Split 409 memory accesses to 3 slices as follows [2, 5, 402]. 98 percent of accesses are in the largest equivalence class. The 407 initializations are split as follows [2, 5, 400]. The 1 writes are split as follows [0, 0, 1]. [2024-11-07 19:06:27,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:06:27,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:06:27,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:06:27,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:06:27,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (1/1) ... [2024-11-07 19:06:27,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:06:28,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:28,019 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 19:06:28,022 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 19:06:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-07 19:06:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-07 19:06:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-07 19:06:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-07 19:06:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:06:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:06:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:06:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:06:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:06:28,052 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 19:06:28,179 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:06:28,181 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:06:28,782 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:06:28,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:06:31,866 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:06:31,866 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:06:31,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:06:31 BoogieIcfgContainer [2024-11-07 19:06:31,867 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:06:31,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:06:31,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:06:31,871 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:06:31,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:06:27" (1/3) ... [2024-11-07 19:06:31,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3d36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:06:31, skipping insertion in model container [2024-11-07 19:06:31,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:06:27" (2/3) ... [2024-11-07 19:06:31,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3d36c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:06:31, skipping insertion in model container [2024-11-07 19:06:31,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:06:31" (3/3) ... [2024-11-07 19:06:31,873 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2024-11-07 19:06:31,883 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:06:31,883 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-07 19:06:31,883 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:06:31,923 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:06:31,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 122 flow [2024-11-07 19:06:31,982 INFO L124 PetriNetUnfolderBase]: 9/52 cut-off events. [2024-11-07 19:06:31,984 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:06:31,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 9/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 124 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2024-11-07 19:06:31,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 122 flow [2024-11-07 19:06:31,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 51 transitions, 114 flow [2024-11-07 19:06:31,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:06:32,007 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;@1549e4e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:06:32,009 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-07 19:06:32,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:06:32,022 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2024-11-07 19:06:32,022 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:06:32,022 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:32,023 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:32,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:32,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:32,027 INFO L85 PathProgramCache]: Analyzing trace with hash -629487562, now seen corresponding path program 1 times [2024-11-07 19:06:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80935118] [2024-11-07 19:06:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:32,547 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 19:06:32,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:32,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80935118] [2024-11-07 19:06:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80935118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:32,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:06:32,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224886522] [2024-11-07 19:06:32,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:32,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:06:32,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:06:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:06:32,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:32,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:32,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:32,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:32,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:32,968 INFO L124 PetriNetUnfolderBase]: 459/863 cut-off events. [2024-11-07 19:06:32,969 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-07 19:06:32,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 863 events. 459/863 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4264 event pairs, 245 based on Foata normal form. 90/827 useless extension candidates. Maximal degree in co-relation 1557. Up to 520 conditions per place. [2024-11-07 19:06:32,979 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-11-07 19:06:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 59 transitions, 225 flow [2024-11-07 19:06:32,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:06:32,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:06:32,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-07 19:06:32,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-11-07 19:06:32,996 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 114 flow. Second operand 4 states and 113 transitions. [2024-11-07 19:06:32,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 59 transitions, 225 flow [2024-11-07 19:06:33,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:06:33,003 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 98 flow [2024-11-07 19:06:33,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-11-07 19:06:33,008 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-11-07 19:06:33,009 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 98 flow [2024-11-07 19:06:33,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:33,010 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:33,010 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:33,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:06:33,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:33,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -629487561, now seen corresponding path program 1 times [2024-11-07 19:06:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:33,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039285254] [2024-11-07 19:06:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:33,396 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 19:06:33,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:33,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039285254] [2024-11-07 19:06:33,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039285254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:33,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:33,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:06:33,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478615252] [2024-11-07 19:06:33,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:33,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:06:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:06:33,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:06:33,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:33,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 19:06:33,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:33,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:33,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:33,627 INFO L124 PetriNetUnfolderBase]: 574/1065 cut-off events. [2024-11-07 19:06:33,627 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-11-07 19:06:33,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 1065 events. 574/1065 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5035 event pairs, 179 based on Foata normal form. 9/927 useless extension candidates. Maximal degree in co-relation 695. Up to 755 conditions per place. [2024-11-07 19:06:33,631 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-07 19:06:33,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 293 flow [2024-11-07 19:06:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:06:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:06:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-11-07 19:06:33,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-11-07 19:06:33,633 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 98 flow. Second operand 5 states and 143 transitions. [2024-11-07 19:06:33,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 293 flow [2024-11-07 19:06:33,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 285 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:06:33,635 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 128 flow [2024-11-07 19:06:33,635 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-07 19:06:33,635 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-11-07 19:06:33,636 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 128 flow [2024-11-07 19:06:33,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 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 19:06:33,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:33,636 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:33,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:06:33,636 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:33,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:33,636 INFO L85 PathProgramCache]: Analyzing trace with hash 355070460, now seen corresponding path program 1 times [2024-11-07 19:06:33,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845846947] [2024-11-07 19:06:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:33,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:33,720 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 19:06:33,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:33,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845846947] [2024-11-07 19:06:33,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845846947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:33,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:33,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:06:33,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457466386] [2024-11-07 19:06:33,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:33,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:06:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:33,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:06:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:06:33,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:33,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 19:06:33,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:33,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:33,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:33,923 INFO L124 PetriNetUnfolderBase]: 823/1512 cut-off events. [2024-11-07 19:06:33,923 INFO L125 PetriNetUnfolderBase]: For 255/258 co-relation queries the response was YES. [2024-11-07 19:06:33,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1512 events. 823/1512 cut-off events. For 255/258 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 7707 event pairs, 363 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 1126. Up to 857 conditions per place. [2024-11-07 19:06:33,929 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 68 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2024-11-07 19:06:33,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 370 flow [2024-11-07 19:06:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:06:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:06:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-07 19:06:33,930 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-07 19:06:33,931 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 128 flow. Second operand 4 states and 135 transitions. [2024-11-07 19:06:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 370 flow [2024-11-07 19:06:33,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:33,933 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 159 flow [2024-11-07 19:06:33,933 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-11-07 19:06:33,933 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 4 predicate places. [2024-11-07 19:06:33,933 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 159 flow [2024-11-07 19:06:33,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 19:06:33,934 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:33,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:33,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:06:33,934 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:33,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1336273583, now seen corresponding path program 1 times [2024-11-07 19:06:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:33,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057698763] [2024-11-07 19:06:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:33,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:33,990 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 19:06:33,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:33,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057698763] [2024-11-07 19:06:33,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057698763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:33,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:33,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:06:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570777929] [2024-11-07 19:06:33,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:33,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:06:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:33,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:06:33,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:06:33,993 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:33,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 159 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:06:33,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:33,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:33,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:34,171 INFO L124 PetriNetUnfolderBase]: 957/1712 cut-off events. [2024-11-07 19:06:34,172 INFO L125 PetriNetUnfolderBase]: For 518/522 co-relation queries the response was YES. [2024-11-07 19:06:34,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 1712 events. 957/1712 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8850 event pairs, 395 based on Foata normal form. 14/1573 useless extension candidates. Maximal degree in co-relation 1265. Up to 1191 conditions per place. [2024-11-07 19:06:34,181 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 55 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-07 19:06:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 328 flow [2024-11-07 19:06:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:06:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:06:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-07 19:06:34,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358024691358025 [2024-11-07 19:06:34,183 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 159 flow. Second operand 3 states and 103 transitions. [2024-11-07 19:06:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 328 flow [2024-11-07 19:06:34,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:34,186 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 168 flow [2024-11-07 19:06:34,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-07 19:06:34,187 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2024-11-07 19:06:34,187 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 168 flow [2024-11-07 19:06:34,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:06:34,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:34,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:34,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:06:34,187 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:34,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:34,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1517244429, now seen corresponding path program 1 times [2024-11-07 19:06:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:34,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191459834] [2024-11-07 19:06:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:34,505 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 19:06:34,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:34,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191459834] [2024-11-07 19:06:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191459834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:34,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:06:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093208311] [2024-11-07 19:06:34,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:34,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:06:34,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:34,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:06:34,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:06:34,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:34,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:34,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:34,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:34,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:34,687 INFO L124 PetriNetUnfolderBase]: 499/1032 cut-off events. [2024-11-07 19:06:34,688 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-07 19:06:34,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1032 events. 499/1032 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4789 event pairs, 105 based on Foata normal form. 60/1020 useless extension candidates. Maximal degree in co-relation 989. Up to 634 conditions per place. [2024-11-07 19:06:34,693 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 45 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2024-11-07 19:06:34,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 300 flow [2024-11-07 19:06:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:06:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:06:34,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-07 19:06:34,694 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2024-11-07 19:06:34,695 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 168 flow. Second operand 3 states and 91 transitions. [2024-11-07 19:06:34,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 300 flow [2024-11-07 19:06:34,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 292 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:34,698 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 170 flow [2024-11-07 19:06:34,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-07 19:06:34,698 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2024-11-07 19:06:34,698 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 170 flow [2024-11-07 19:06:34,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:34,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:34,699 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:34,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:06:34,699 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:34,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1885659421, now seen corresponding path program 1 times [2024-11-07 19:06:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414552196] [2024-11-07 19:06:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:34,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:35,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:35,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414552196] [2024-11-07 19:06:35,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414552196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:35,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805011284] [2024-11-07 19:06:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:35,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:35,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:35,113 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 19:06:35,115 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 19:06:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:35,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 956 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 19:06:35,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:35,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:06:35,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805011284] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:06:35,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:06:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-07 19:06:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819501703] [2024-11-07 19:06:35,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:06:35,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:06:35,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:35,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:06:35,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:06:35,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-07 19:06:35,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 170 flow. Second operand has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 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 19:06:35,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:35,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-07 19:06:35,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:36,519 INFO L124 PetriNetUnfolderBase]: 1740/3508 cut-off events. [2024-11-07 19:06:36,520 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-11-07 19:06:36,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8219 conditions, 3508 events. 1740/3508 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19723 event pairs, 262 based on Foata normal form. 54/3327 useless extension candidates. Maximal degree in co-relation 2561. Up to 699 conditions per place. [2024-11-07 19:06:36,541 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 194 selfloop transitions, 26 changer transitions 0/231 dead transitions. [2024-11-07 19:06:36,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 231 transitions, 1170 flow [2024-11-07 19:06:36,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 19:06:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-07 19:06:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 425 transitions. [2024-11-07 19:06:36,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-11-07 19:06:36,545 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 170 flow. Second operand 15 states and 425 transitions. [2024-11-07 19:06:36,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 231 transitions, 1170 flow [2024-11-07 19:06:36,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 231 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:36,552 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 417 flow [2024-11-07 19:06:36,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=417, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-11-07 19:06:36,554 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-11-07 19:06:36,554 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 417 flow [2024-11-07 19:06:36,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.214285714285715) internal successors, (241), 14 states have internal predecessors, (241), 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 19:06:36,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:36,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:36,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-07 19:06:36,758 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 19:06:36,759 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:36,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash 661418226, now seen corresponding path program 1 times [2024-11-07 19:06:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021969527] [2024-11-07 19:06:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:36,898 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 19:06:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021969527] [2024-11-07 19:06:36,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021969527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:36,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:36,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:06:36,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61197511] [2024-11-07 19:06:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:36,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:06:36,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:36,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:06:36,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:06:36,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:36,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 417 flow. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:36,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:36,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:36,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:37,254 INFO L124 PetriNetUnfolderBase]: 1695/3428 cut-off events. [2024-11-07 19:06:37,254 INFO L125 PetriNetUnfolderBase]: For 1900/1900 co-relation queries the response was YES. [2024-11-07 19:06:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8806 conditions, 3428 events. 1695/3428 cut-off events. For 1900/1900 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19765 event pairs, 958 based on Foata normal form. 0/3314 useless extension candidates. Maximal degree in co-relation 7328. Up to 2028 conditions per place. [2024-11-07 19:06:37,273 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 55 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-11-07 19:06:37,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 591 flow [2024-11-07 19:06:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:06:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:06:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-11-07 19:06:37,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-11-07 19:06:37,274 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 417 flow. Second operand 5 states and 117 transitions. [2024-11-07 19:06:37,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 591 flow [2024-11-07 19:06:37,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 581 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-07 19:06:37,283 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 441 flow [2024-11-07 19:06:37,283 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-07 19:06:37,284 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 35 predicate places. [2024-11-07 19:06:37,284 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 441 flow [2024-11-07 19:06:37,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:37,284 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:37,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:37,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:06:37,285 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:37,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:37,285 INFO L85 PathProgramCache]: Analyzing trace with hash 661418227, now seen corresponding path program 1 times [2024-11-07 19:06:37,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:37,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238086045] [2024-11-07 19:06:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:37,568 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 19:06:37,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:37,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238086045] [2024-11-07 19:06:37,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238086045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:37,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:37,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:06:37,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568906441] [2024-11-07 19:06:37,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:37,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:06:37,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:37,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:06:37,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:06:37,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:37,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:37,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:37,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:37,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:38,012 INFO L124 PetriNetUnfolderBase]: 1847/3722 cut-off events. [2024-11-07 19:06:38,012 INFO L125 PetriNetUnfolderBase]: For 2935/2935 co-relation queries the response was YES. [2024-11-07 19:06:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9848 conditions, 3722 events. 1847/3722 cut-off events. For 2935/2935 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 21468 event pairs, 510 based on Foata normal form. 0/3572 useless extension candidates. Maximal degree in co-relation 8311. Up to 2690 conditions per place. [2024-11-07 19:06:38,029 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 100 selfloop transitions, 7 changer transitions 0/118 dead transitions. [2024-11-07 19:06:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 118 transitions, 834 flow [2024-11-07 19:06:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:06:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:06:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-11-07 19:06:38,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-11-07 19:06:38,030 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 441 flow. Second operand 6 states and 168 transitions. [2024-11-07 19:06:38,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 118 transitions, 834 flow [2024-11-07 19:06:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 788 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:06:38,039 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 472 flow [2024-11-07 19:06:38,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-11-07 19:06:38,040 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 39 predicate places. [2024-11-07 19:06:38,040 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 472 flow [2024-11-07 19:06:38,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:38,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:38,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:38,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:06:38,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:38,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:38,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1629528013, now seen corresponding path program 1 times [2024-11-07 19:06:38,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:38,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219094871] [2024-11-07 19:06:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:38,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:38,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219094871] [2024-11-07 19:06:38,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219094871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:38,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:38,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:06:38,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53300673] [2024-11-07 19:06:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:38,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:06:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:38,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:06:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:06:38,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:38,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:38,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:38,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:38,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:38,502 INFO L124 PetriNetUnfolderBase]: 2725/5696 cut-off events. [2024-11-07 19:06:38,502 INFO L125 PetriNetUnfolderBase]: For 3993/3993 co-relation queries the response was YES. [2024-11-07 19:06:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14599 conditions, 5696 events. 2725/5696 cut-off events. For 3993/3993 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 38116 event pairs, 1359 based on Foata normal form. 137/5631 useless extension candidates. Maximal degree in co-relation 12585. Up to 3244 conditions per place. [2024-11-07 19:06:38,537 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 122 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-11-07 19:06:38,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 1106 flow [2024-11-07 19:06:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:06:38,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:06:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-07 19:06:38,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-07 19:06:38,538 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 472 flow. Second operand 3 states and 104 transitions. [2024-11-07 19:06:38,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 1106 flow [2024-11-07 19:06:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1094 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-07 19:06:38,554 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 477 flow [2024-11-07 19:06:38,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-11-07 19:06:38,555 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 40 predicate places. [2024-11-07 19:06:38,555 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 477 flow [2024-11-07 19:06:38,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:06:38,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:38,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:38,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:06:38,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:38,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash -935545679, now seen corresponding path program 1 times [2024-11-07 19:06:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:38,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743717049] [2024-11-07 19:06:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:39,248 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 19:06:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:39,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743717049] [2024-11-07 19:06:39,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743717049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:06:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-07 19:06:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687326340] [2024-11-07 19:06:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:39,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:06:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:06:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:06:39,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:39,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 19:06:39,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:39,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:39,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:40,130 INFO L124 PetriNetUnfolderBase]: 3462/7027 cut-off events. [2024-11-07 19:06:40,131 INFO L125 PetriNetUnfolderBase]: For 5802/5802 co-relation queries the response was YES. [2024-11-07 19:06:40,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19737 conditions, 7027 events. 3462/7027 cut-off events. For 5802/5802 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 44926 event pairs, 786 based on Foata normal form. 0/6807 useless extension candidates. Maximal degree in co-relation 16162. Up to 3938 conditions per place. [2024-11-07 19:06:40,162 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 159 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2024-11-07 19:06:40,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 182 transitions, 1302 flow [2024-11-07 19:06:40,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:06:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:06:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-11-07 19:06:40,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-07 19:06:40,166 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 477 flow. Second operand 11 states and 297 transitions. [2024-11-07 19:06:40,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 182 transitions, 1302 flow [2024-11-07 19:06:40,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 182 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:40,182 INFO L231 Difference]: Finished difference. Result has 101 places, 83 transitions, 523 flow [2024-11-07 19:06:40,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=523, PETRI_PLACES=101, PETRI_TRANSITIONS=83} [2024-11-07 19:06:40,184 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 52 predicate places. [2024-11-07 19:06:40,184 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 83 transitions, 523 flow [2024-11-07 19:06:40,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.9) internal successors, (179), 10 states have internal predecessors, (179), 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 19:06:40,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:40,184 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:40,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:06:40,185 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:40,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -19047919, now seen corresponding path program 1 times [2024-11-07 19:06:40,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:40,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187613026] [2024-11-07 19:06:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:40,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187613026] [2024-11-07 19:06:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187613026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148882979] [2024-11-07 19:06:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:40,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:40,261 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 19:06:40,262 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 19:06:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:40,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 19:06:40,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:40,435 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 19:06:40,435 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:06:40,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148882979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:40,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:06:40,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-11-07 19:06:40,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298881610] [2024-11-07 19:06:40,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:40,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:06:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:40,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:06:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:06:40,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:40,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 83 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:40,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:40,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:40,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:40,842 INFO L124 PetriNetUnfolderBase]: 3504/7050 cut-off events. [2024-11-07 19:06:40,842 INFO L125 PetriNetUnfolderBase]: For 6735/6735 co-relation queries the response was YES. [2024-11-07 19:06:40,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20251 conditions, 7050 events. 3504/7050 cut-off events. For 6735/6735 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 46089 event pairs, 2843 based on Foata normal form. 19/6839 useless extension candidates. Maximal degree in co-relation 16643. Up to 6094 conditions per place. [2024-11-07 19:06:40,877 INFO L140 encePairwiseOnDemand]: 52/54 looper letters, 69 selfloop transitions, 1 changer transitions 2/82 dead transitions. [2024-11-07 19:06:40,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 82 transitions, 663 flow [2024-11-07 19:06:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:06:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:06:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-11-07 19:06:40,878 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-11-07 19:06:40,879 INFO L175 Difference]: Start difference. First operand has 101 places, 83 transitions, 523 flow. Second operand 3 states and 77 transitions. [2024-11-07 19:06:40,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 82 transitions, 663 flow [2024-11-07 19:06:40,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 82 transitions, 643 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-11-07 19:06:40,896 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 498 flow [2024-11-07 19:06:40,896 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=498, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-11-07 19:06:40,897 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 47 predicate places. [2024-11-07 19:06:40,897 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 498 flow [2024-11-07 19:06:40,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 19:06:40,897 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:40,898 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:40,911 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 19:06:41,101 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 19:06:41,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:41,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 310566865, now seen corresponding path program 1 times [2024-11-07 19:06:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729581201] [2024-11-07 19:06:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:41,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729581201] [2024-11-07 19:06:41,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729581201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828325267] [2024-11-07 19:06:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:41,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:41,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:41,358 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 19:06:41,360 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 19:06:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:41,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 19:06:41,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:41,730 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:06:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:41,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828325267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:06:41,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:06:41,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-07 19:06:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680977037] [2024-11-07 19:06:41,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:06:41,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:06:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:06:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:06:41,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-07 19:06:41,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 498 flow. Second operand has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 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 19:06:41,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:41,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-07 19:06:41,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:43,646 INFO L124 PetriNetUnfolderBase]: 7062/14006 cut-off events. [2024-11-07 19:06:43,646 INFO L125 PetriNetUnfolderBase]: For 12715/12719 co-relation queries the response was YES. [2024-11-07 19:06:43,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39810 conditions, 14006 events. 7062/14006 cut-off events. For 12715/12719 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 98256 event pairs, 974 based on Foata normal form. 154/13706 useless extension candidates. Maximal degree in co-relation 39775. Up to 2318 conditions per place. [2024-11-07 19:06:43,775 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 313 selfloop transitions, 57 changer transitions 0/378 dead transitions. [2024-11-07 19:06:43,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 378 transitions, 2639 flow [2024-11-07 19:06:43,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-07 19:06:43,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-07 19:06:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 580 transitions. [2024-11-07 19:06:43,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-07 19:06:43,779 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 498 flow. Second operand 20 states and 580 transitions. [2024-11-07 19:06:43,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 378 transitions, 2639 flow [2024-11-07 19:06:43,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 378 transitions, 2636 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:43,886 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 1009 flow [2024-11-07 19:06:43,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1009, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-11-07 19:06:43,888 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 75 predicate places. [2024-11-07 19:06:43,888 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 1009 flow [2024-11-07 19:06:43,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.41176470588235) internal successors, (313), 17 states have internal predecessors, (313), 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 19:06:43,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:43,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:43,905 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 19:06:44,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:44,093 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:44,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1409946811, now seen corresponding path program 1 times [2024-11-07 19:06:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:44,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570911591] [2024-11-07 19:06:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570911591] [2024-11-07 19:06:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570911591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390650704] [2024-11-07 19:06:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:44,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:44,898 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 19:06:44,899 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 19:06:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:45,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-07 19:06:45,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:45,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-07 19:06:45,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-07 19:06:45,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:06:45,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:06:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390650704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:06:45,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:06:45,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2024-11-07 19:06:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631121700] [2024-11-07 19:06:45,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:06:45,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 19:06:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 19:06:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-07 19:06:45,479 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-07 19:06:45,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 1009 flow. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 19:06:45,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:45,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-07 19:06:45,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:48,292 INFO L124 PetriNetUnfolderBase]: 10165/20130 cut-off events. [2024-11-07 19:06:48,292 INFO L125 PetriNetUnfolderBase]: For 32573/32573 co-relation queries the response was YES. [2024-11-07 19:06:48,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62977 conditions, 20130 events. 10165/20130 cut-off events. For 32573/32573 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 153231 event pairs, 1401 based on Foata normal form. 0/19588 useless extension candidates. Maximal degree in co-relation 62929. Up to 4323 conditions per place. [2024-11-07 19:06:48,432 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 148 selfloop transitions, 140 changer transitions 0/298 dead transitions. [2024-11-07 19:06:48,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 298 transitions, 2632 flow [2024-11-07 19:06:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-07 19:06:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-07 19:06:48,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 416 transitions. [2024-11-07 19:06:48,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4531590413943355 [2024-11-07 19:06:48,434 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 1009 flow. Second operand 17 states and 416 transitions. [2024-11-07 19:06:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 298 transitions, 2632 flow [2024-11-07 19:06:48,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 298 transitions, 2475 flow, removed 72 selfloop flow, removed 3 redundant places. [2024-11-07 19:06:48,548 INFO L231 Difference]: Finished difference. Result has 141 places, 189 transitions, 1891 flow [2024-11-07 19:06:48,549 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1891, PETRI_PLACES=141, PETRI_TRANSITIONS=189} [2024-11-07 19:06:48,550 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 92 predicate places. [2024-11-07 19:06:48,550 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 189 transitions, 1891 flow [2024-11-07 19:06:48,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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 19:06:48,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:48,550 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:48,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 19:06:48,751 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,SelfDestructingSolverStorable12 [2024-11-07 19:06:48,751 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:48,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1629450831, now seen corresponding path program 1 times [2024-11-07 19:06:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200598984] [2024-11-07 19:06:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:06:49,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:49,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200598984] [2024-11-07 19:06:49,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200598984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564726663] [2024-11-07 19:06:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:49,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:49,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:49,024 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 19:06:49,026 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 19:06:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:49,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 19:06:49,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:06:49,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:06:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:06:49,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564726663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:06:49,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:06:49,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-07 19:06:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000895187] [2024-11-07 19:06:49,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:06:49,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:06:49,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:06:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:06:49,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-07 19:06:49,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 189 transitions, 1891 flow. Second operand has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 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 19:06:49,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:49,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-07 19:06:49,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:53,403 INFO L124 PetriNetUnfolderBase]: 10541/20500 cut-off events. [2024-11-07 19:06:53,404 INFO L125 PetriNetUnfolderBase]: For 37696/37706 co-relation queries the response was YES. [2024-11-07 19:06:53,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67086 conditions, 20500 events. 10541/20500 cut-off events. For 37696/37706 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 151602 event pairs, 1963 based on Foata normal form. 148/20186 useless extension candidates. Maximal degree in co-relation 67035. Up to 3480 conditions per place. [2024-11-07 19:06:53,645 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 394 selfloop transitions, 149 changer transitions 0/551 dead transitions. [2024-11-07 19:06:53,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 551 transitions, 5117 flow [2024-11-07 19:06:53,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 19:06:53,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-07 19:06:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 684 transitions. [2024-11-07 19:06:53,648 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-11-07 19:06:53,648 INFO L175 Difference]: Start difference. First operand has 141 places, 189 transitions, 1891 flow. Second operand 25 states and 684 transitions. [2024-11-07 19:06:53,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 551 transitions, 5117 flow [2024-11-07 19:06:53,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 551 transitions, 4718 flow, removed 199 selfloop flow, removed 1 redundant places. [2024-11-07 19:06:53,867 INFO L231 Difference]: Finished difference. Result has 176 places, 269 transitions, 2918 flow [2024-11-07 19:06:53,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2918, PETRI_PLACES=176, PETRI_TRANSITIONS=269} [2024-11-07 19:06:53,868 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 127 predicate places. [2024-11-07 19:06:53,868 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 269 transitions, 2918 flow [2024-11-07 19:06:53,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.647058823529413) internal successors, (334), 17 states have internal predecessors, (334), 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 19:06:53,868 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:06:53,869 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:06:53,882 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 19:06:54,070 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,SelfDestructingSolverStorable13 [2024-11-07 19:06:54,071 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:06:54,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:06:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -344761274, now seen corresponding path program 1 times [2024-11-07 19:06:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:06:54,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932320026] [2024-11-07 19:06:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:54,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:06:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:54,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:06:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932320026] [2024-11-07 19:06:54,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932320026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:06:54,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980331462] [2024-11-07 19:06:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:06:54,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:06:54,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:06:54,327 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:06:54,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:06:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:06:54,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:06:54,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:06:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:54,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:06:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:06:54,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980331462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:06:54,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:06:54,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-07 19:06:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542237091] [2024-11-07 19:06:54,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:06:54,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:06:54,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:06:54,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:06:54,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:06:54,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:06:54,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 269 transitions, 2918 flow. Second operand has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 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 19:06:54,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:06:54,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:06:54,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:06:59,242 INFO L124 PetriNetUnfolderBase]: 16165/31712 cut-off events. [2024-11-07 19:06:59,242 INFO L125 PetriNetUnfolderBase]: For 86426/86464 co-relation queries the response was YES. [2024-11-07 19:06:59,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109385 conditions, 31712 events. 16165/31712 cut-off events. For 86426/86464 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 248614 event pairs, 4515 based on Foata normal form. 1098/32558 useless extension candidates. Maximal degree in co-relation 109321. Up to 5667 conditions per place. [2024-11-07 19:06:59,816 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 579 selfloop transitions, 168 changer transitions 0/756 dead transitions. [2024-11-07 19:06:59,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 756 transitions, 8603 flow [2024-11-07 19:06:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:06:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:06:59,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 413 transitions. [2024-11-07 19:06:59,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6952861952861953 [2024-11-07 19:06:59,818 INFO L175 Difference]: Start difference. First operand has 176 places, 269 transitions, 2918 flow. Second operand 11 states and 413 transitions. [2024-11-07 19:06:59,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 756 transitions, 8603 flow [2024-11-07 19:07:00,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 756 transitions, 8030 flow, removed 219 selfloop flow, removed 10 redundant places. [2024-11-07 19:07:00,369 INFO L231 Difference]: Finished difference. Result has 185 places, 355 transitions, 4438 flow [2024-11-07 19:07:00,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2314, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4438, PETRI_PLACES=185, PETRI_TRANSITIONS=355} [2024-11-07 19:07:00,370 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-07 19:07:00,370 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 355 transitions, 4438 flow [2024-11-07 19:07:00,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.272727272727273) internal successors, (234), 11 states have internal predecessors, (234), 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 19:07:00,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:00,371 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:00,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:07:00,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 19:07:00,572 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:07:00,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:00,572 INFO L85 PathProgramCache]: Analyzing trace with hash -270244294, now seen corresponding path program 1 times [2024-11-07 19:07:00,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:00,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73666782] [2024-11-07 19:07:00,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:00,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-07 19:07:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73666782] [2024-11-07 19:07:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73666782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:07:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:07:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:07:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046158361] [2024-11-07 19:07:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:07:00,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:07:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:07:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:07:00,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:07:00,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 355 transitions, 4438 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:07:00,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:00,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:07:00,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:05,037 INFO L124 PetriNetUnfolderBase]: 14540/28370 cut-off events. [2024-11-07 19:07:05,037 INFO L125 PetriNetUnfolderBase]: For 85050/85095 co-relation queries the response was YES. [2024-11-07 19:07:05,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101816 conditions, 28370 events. 14540/28370 cut-off events. For 85050/85095 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 217849 event pairs, 10773 based on Foata normal form. 413/28664 useless extension candidates. Maximal degree in co-relation 101751. Up to 22609 conditions per place. [2024-11-07 19:07:05,409 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 270 selfloop transitions, 77 changer transitions 0/356 dead transitions. [2024-11-07 19:07:05,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 356 transitions, 4985 flow [2024-11-07 19:07:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:07:05,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:07:05,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-07 19:07:05,410 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-11-07 19:07:05,410 INFO L175 Difference]: Start difference. First operand has 185 places, 355 transitions, 4438 flow. Second operand 3 states and 96 transitions. [2024-11-07 19:07:05,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 356 transitions, 4985 flow [2024-11-07 19:07:05,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 356 transitions, 4892 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-07 19:07:05,950 INFO L231 Difference]: Finished difference. Result has 185 places, 327 transitions, 4308 flow [2024-11-07 19:07:05,951 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3906, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=4308, PETRI_PLACES=185, PETRI_TRANSITIONS=327} [2024-11-07 19:07:05,951 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 136 predicate places. [2024-11-07 19:07:05,951 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 327 transitions, 4308 flow [2024-11-07 19:07:05,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:07:05,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:05,952 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:05,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:07:05,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:07:05,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1586199029, now seen corresponding path program 1 times [2024-11-07 19:07:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:05,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222476228] [2024-11-07 19:07:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:06,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:06,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222476228] [2024-11-07 19:07:06,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222476228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:07:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583826220] [2024-11-07 19:07:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:07:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:07:06,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:07:06,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-07 19:07:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:07,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-07 19:07:07,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:07:07,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2024-11-07 19:07:07,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-07 19:07:07,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19 [2024-11-07 19:07:07,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32 [2024-11-07 19:07:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:07,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:07:07,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-07 19:07:07,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:07,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583826220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:07:07,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:07:07,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-07 19:07:07,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327319133] [2024-11-07 19:07:07,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:07:07,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-07 19:07:07,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:07,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-07 19:07:07,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1078, Unknown=0, NotChecked=0, Total=1190 [2024-11-07 19:07:08,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-07 19:07:08,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 327 transitions, 4308 flow. Second operand has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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 19:07:08,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:08,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-07 19:07:08,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:16,968 INFO L124 PetriNetUnfolderBase]: 19146/37564 cut-off events. [2024-11-07 19:07:16,969 INFO L125 PetriNetUnfolderBase]: For 119040/119040 co-relation queries the response was YES. [2024-11-07 19:07:17,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135636 conditions, 37564 events. 19146/37564 cut-off events. For 119040/119040 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 290897 event pairs, 2324 based on Foata normal form. 0/37451 useless extension candidates. Maximal degree in co-relation 135573. Up to 8001 conditions per place. [2024-11-07 19:07:17,377 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 380 selfloop transitions, 385 changer transitions 26/800 dead transitions. [2024-11-07 19:07:17,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 800 transitions, 8918 flow [2024-11-07 19:07:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-07 19:07:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2024-11-07 19:07:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1212 transitions. [2024-11-07 19:07:17,380 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4156378600823045 [2024-11-07 19:07:17,380 INFO L175 Difference]: Start difference. First operand has 185 places, 327 transitions, 4308 flow. Second operand 54 states and 1212 transitions. [2024-11-07 19:07:17,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 800 transitions, 8918 flow [2024-11-07 19:07:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 800 transitions, 8630 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-11-07 19:07:18,055 INFO L231 Difference]: Finished difference. Result has 241 places, 438 transitions, 6367 flow [2024-11-07 19:07:18,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4132, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=6367, PETRI_PLACES=241, PETRI_TRANSITIONS=438} [2024-11-07 19:07:18,056 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 192 predicate places. [2024-11-07 19:07:18,056 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 438 transitions, 6367 flow [2024-11-07 19:07:18,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 18.0) internal successors, (630), 35 states have internal predecessors, (630), 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 19:07:18,057 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:18,057 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:07:18,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 19:07:18,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:07:18,259 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:07:18,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:18,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1071943235, now seen corresponding path program 1 times [2024-11-07 19:07:18,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:18,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708300062] [2024-11-07 19:07:18,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:18,632 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:18,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708300062] [2024-11-07 19:07:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708300062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:07:18,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563703891] [2024-11-07 19:07:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:18,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:07:18,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:07:18,635 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:07:18,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-07 19:07:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:18,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 19:07:18,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:07:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:19,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:07:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:19,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563703891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:07:19,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:07:19,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2024-11-07 19:07:19,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272150195] [2024-11-07 19:07:19,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:07:19,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-07 19:07:19,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:19,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-07 19:07:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-07 19:07:19,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-07 19:07:19,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 438 transitions, 6367 flow. Second operand has 20 states, 20 states have (on average 20.15) internal successors, (403), 20 states have internal predecessors, (403), 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 19:07:19,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:19,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-07 19:07:19,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:07:30,037 INFO L124 PetriNetUnfolderBase]: 30530/60205 cut-off events. [2024-11-07 19:07:30,037 INFO L125 PetriNetUnfolderBase]: For 202657/202683 co-relation queries the response was YES. [2024-11-07 19:07:30,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228014 conditions, 60205 events. 30530/60205 cut-off events. For 202657/202683 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 503748 event pairs, 6906 based on Foata normal form. 448/60568 useless extension candidates. Maximal degree in co-relation 227945. Up to 17157 conditions per place. [2024-11-07 19:07:31,085 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 779 selfloop transitions, 378 changer transitions 0/1165 dead transitions. [2024-11-07 19:07:31,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 1165 transitions, 16187 flow [2024-11-07 19:07:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-07 19:07:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-07 19:07:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 842 transitions. [2024-11-07 19:07:31,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48726851851851855 [2024-11-07 19:07:31,090 INFO L175 Difference]: Start difference. First operand has 241 places, 438 transitions, 6367 flow. Second operand 32 states and 842 transitions. [2024-11-07 19:07:31,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 1165 transitions, 16187 flow [2024-11-07 19:07:32,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 1165 transitions, 15423 flow, removed 294 selfloop flow, removed 19 redundant places. [2024-11-07 19:07:32,850 INFO L231 Difference]: Finished difference. Result has 276 places, 677 transitions, 11414 flow [2024-11-07 19:07:32,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5777, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=11414, PETRI_PLACES=276, PETRI_TRANSITIONS=677} [2024-11-07 19:07:32,852 INFO L277 CegarLoopForPetriNet]: 49 programPoint places, 227 predicate places. [2024-11-07 19:07:32,852 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 677 transitions, 11414 flow [2024-11-07 19:07:32,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.15) internal successors, (403), 20 states have internal predecessors, (403), 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 19:07:32,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:07:32,856 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2024-11-07 19:07:32,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 19:07:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 19:07:33,057 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2024-11-07 19:07:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:07:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -620864541, now seen corresponding path program 2 times [2024-11-07 19:07:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:07:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085385732] [2024-11-07 19:07:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:07:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:07:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:07:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:07:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085385732] [2024-11-07 19:07:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085385732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:07:33,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858476207] [2024-11-07 19:07:33,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:07:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:07:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:07:33,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:07:33,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-07 19:07:33,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:07:33,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:07:33,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-07 19:07:33,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:07:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:34,487 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:07:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:07:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858476207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:07:34,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:07:34,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2024-11-07 19:07:34,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700038739] [2024-11-07 19:07:34,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:07:34,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 19:07:34,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:07:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 19:07:34,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2024-11-07 19:07:35,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-07 19:07:35,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 677 transitions, 11414 flow. Second operand has 26 states, 26 states have (on average 19.423076923076923) internal successors, (505), 26 states have internal predecessors, (505), 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 19:07:35,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:07:35,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-07 19:07:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand