./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', '052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:40:21,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:40:21,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:40:21,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:40:21,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:40:21,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:40:21,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:40:21,830 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:40:21,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:40:21,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:40:21,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:40:21,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:40:21,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:40:21,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:40:21,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:40:21,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:40:21,832 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 -> 052a68c73a5d1c6e7122fc0c660c02483f37277d0239d876d93b351fcdd64a16 [2024-11-07 19:40:22,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:40:22,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:40:22,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:40:22,051 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:40:22,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:40:22,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-07 19:40:23,195 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:40:23,381 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:40:23,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-5.wvr.c [2024-11-07 19:40:23,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5f3c93ed9/f886e9489b9448aaafc94d73dcf38813/FLAG4ab2786aa [2024-11-07 19:40:23,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5f3c93ed9/f886e9489b9448aaafc94d73dcf38813 [2024-11-07 19:40:23,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:40:23,760 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:40:23,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:40:23,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:40:23,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:40:23,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8e6780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23, skipping insertion in model container [2024-11-07 19:40:23,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,777 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:40:23,884 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-07 19:40:23,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:40:23,891 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:40:23,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:40:23,921 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:40:23,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23 WrapperNode [2024-11-07 19:40:23,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:40:23,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:40:23,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:40:23,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:40:23,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,932 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,952 INFO L138 Inliner]: procedures = 23, calls = 36, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 199 [2024-11-07 19:40:23,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:40:23,956 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:40:23,956 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:40:23,956 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:40:23,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,982 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-07 19:40:23,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:23,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:24,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:40:24,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:40:24,003 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:40:24,003 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:40:24,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (1/1) ... [2024-11-07 19:40:24,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:40:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:24,029 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 19:40:24,030 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 19:40:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:40:24,045 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:40:24,045 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:40:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:40:24,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:40:24,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:40:24,047 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 19:40:24,115 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:40:24,116 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:40:24,431 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:40:24,431 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:40:24,635 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:40:24,635 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-07 19:40:24,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:40:24 BoogieIcfgContainer [2024-11-07 19:40:24,636 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:40:24,638 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:40:24,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:40:24,641 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:40:24,641 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:40:23" (1/3) ... [2024-11-07 19:40:24,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcca402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:40:24, skipping insertion in model container [2024-11-07 19:40:24,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:40:23" (2/3) ... [2024-11-07 19:40:24,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcca402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:40:24, skipping insertion in model container [2024-11-07 19:40:24,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:40:24" (3/3) ... [2024-11-07 19:40:24,643 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2024-11-07 19:40:24,652 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:40:24,653 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-07 19:40:24,653 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:40:24,701 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:40:24,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 64 transitions, 142 flow [2024-11-07 19:40:24,772 INFO L124 PetriNetUnfolderBase]: 7/62 cut-off events. [2024-11-07 19:40:24,774 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:40:24,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 62 events. 7/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-07 19:40:24,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 64 transitions, 142 flow [2024-11-07 19:40:24,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 61 transitions, 134 flow [2024-11-07 19:40:24,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:40:24,793 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;@320d05ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:40:24,793 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-11-07 19:40:24,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:40:24,799 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-07 19:40:24,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:40:24,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:24,800 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:40:24,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:24,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 671334, now seen corresponding path program 1 times [2024-11-07 19:40:24,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:24,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235216277] [2024-11-07 19:40:24,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:24,973 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 19:40:24,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:24,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235216277] [2024-11-07 19:40:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235216277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:24,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:40:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486110114] [2024-11-07 19:40:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:24,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:25,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:25,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:25,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:25,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:25,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:25,155 INFO L124 PetriNetUnfolderBase]: 218/540 cut-off events. [2024-11-07 19:40:25,156 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-11-07 19:40:25,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 540 events. 218/540 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3143 event pairs, 141 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 804. Up to 347 conditions per place. [2024-11-07 19:40:25,160 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 30 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-11-07 19:40:25,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 58 transitions, 192 flow [2024-11-07 19:40:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:25,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-07 19:40:25,169 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6302083333333334 [2024-11-07 19:40:25,170 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 134 flow. Second operand 3 states and 121 transitions. [2024-11-07 19:40:25,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 58 transitions, 192 flow [2024-11-07 19:40:25,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:25,175 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 124 flow [2024-11-07 19:40:25,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-11-07 19:40:25,179 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-07 19:40:25,179 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 124 flow [2024-11-07 19:40:25,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:25,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:25,180 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:40:25,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:40:25,180 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:25,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:25,181 INFO L85 PathProgramCache]: Analyzing trace with hash 671335, now seen corresponding path program 1 times [2024-11-07 19:40:25,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:25,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087977777] [2024-11-07 19:40:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:25,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:25,417 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 19:40:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087977777] [2024-11-07 19:40:25,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087977777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:25,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:25,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:25,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712012174] [2024-11-07 19:40:25,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:25,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:40:25,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:25,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:40:25,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:40:25,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:25,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 19:40:25,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:25,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:25,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:25,594 INFO L124 PetriNetUnfolderBase]: 219/543 cut-off events. [2024-11-07 19:40:25,594 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:40:25,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 543 events. 219/543 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3160 event pairs, 141 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 885. Up to 352 conditions per place. [2024-11-07 19:40:25,600 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 33 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-11-07 19:40:25,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 204 flow [2024-11-07 19:40:25,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-07 19:40:25,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2024-11-07 19:40:25,603 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 124 flow. Second operand 3 states and 124 transitions. [2024-11-07 19:40:25,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 204 flow [2024-11-07 19:40:25,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:25,605 INFO L231 Difference]: Finished difference. Result has 57 places, 60 transitions, 139 flow [2024-11-07 19:40:25,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=57, PETRI_TRANSITIONS=60} [2024-11-07 19:40:25,607 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-11-07 19:40:25,608 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 60 transitions, 139 flow [2024-11-07 19:40:25,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 19:40:25,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:25,608 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-07 19:40:25,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:40:25,608 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:25,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:25,609 INFO L85 PathProgramCache]: Analyzing trace with hash 645174634, now seen corresponding path program 1 times [2024-11-07 19:40:25,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038598028] [2024-11-07 19:40:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:25,863 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 19:40:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038598028] [2024-11-07 19:40:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038598028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432862143] [2024-11-07 19:40:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:25,867 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 19:40:25,869 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 19:40:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:25,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 19:40:25,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:25,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2024-11-07 19:40:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:26,121 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:26,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432862143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:26,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:26,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:40:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042030649] [2024-11-07 19:40:26,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:26,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:26,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:26,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:26,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 60 transitions, 139 flow. Second operand has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 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 19:40:26,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:26,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:26,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:26,580 INFO L124 PetriNetUnfolderBase]: 220/545 cut-off events. [2024-11-07 19:40:26,580 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:40:26,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 545 events. 220/545 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3165 event pairs, 141 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 885. Up to 349 conditions per place. [2024-11-07 19:40:26,583 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 29 selfloop transitions, 9 changer transitions 0/63 dead transitions. [2024-11-07 19:40:26,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 223 flow [2024-11-07 19:40:26,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:40:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:40:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-11-07 19:40:26,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5424107142857143 [2024-11-07 19:40:26,585 INFO L175 Difference]: Start difference. First operand has 57 places, 60 transitions, 139 flow. Second operand 7 states and 243 transitions. [2024-11-07 19:40:26,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 223 flow [2024-11-07 19:40:26,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:26,586 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 164 flow [2024-11-07 19:40:26,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-11-07 19:40:26,587 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:40:26,587 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 164 flow [2024-11-07 19:40:26,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 30.363636363636363) internal successors, (334), 11 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 19:40:26,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:26,588 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:40:26,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-07 19:40:26,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:26,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:26,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1472063753, now seen corresponding path program 1 times [2024-11-07 19:40:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:26,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444012087] [2024-11-07 19:40:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:26,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:26,856 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 19:40:26,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:26,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444012087] [2024-11-07 19:40:26,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444012087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:26,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:26,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178966016] [2024-11-07 19:40:26,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:26,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:40:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:26,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:40:26,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:40:26,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-11-07 19:40:26,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 19:40:26,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:26,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-11-07 19:40:26,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:27,012 INFO L124 PetriNetUnfolderBase]: 220/468 cut-off events. [2024-11-07 19:40:27,012 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:40:27,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 468 events. 220/468 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2254 event pairs, 141 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 808. Up to 348 conditions per place. [2024-11-07 19:40:27,015 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 34 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-11-07 19:40:27,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 220 flow [2024-11-07 19:40:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-11-07 19:40:27,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609375 [2024-11-07 19:40:27,017 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 164 flow. Second operand 4 states and 118 transitions. [2024-11-07 19:40:27,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 220 flow [2024-11-07 19:40:27,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 202 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:27,018 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 134 flow [2024-11-07 19:40:27,018 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2024-11-07 19:40:27,019 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2024-11-07 19:40:27,019 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 134 flow [2024-11-07 19:40:27,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 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 19:40:27,019 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:27,020 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:40:27,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:40:27,020 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:27,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:27,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1472063752, now seen corresponding path program 1 times [2024-11-07 19:40:27,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953588242] [2024-11-07 19:40:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:27,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:27,069 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 19:40:27,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:27,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953588242] [2024-11-07 19:40:27,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953588242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:27,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:27,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:27,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446857743] [2024-11-07 19:40:27,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:27,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:27,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:27,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-07 19:40:27,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 19:40:27,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:27,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-07 19:40:27,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:27,147 INFO L124 PetriNetUnfolderBase]: 219/467 cut-off events. [2024-11-07 19:40:27,148 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-07 19:40:27,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 467 events. 219/467 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2231 event pairs, 141 based on Foata normal form. 1/428 useless extension candidates. Maximal degree in co-relation 808. Up to 353 conditions per place. [2024-11-07 19:40:27,150 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 35 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2024-11-07 19:40:27,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 203 flow [2024-11-07 19:40:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:27,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-07 19:40:27,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-11-07 19:40:27,152 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 134 flow. Second operand 3 states and 125 transitions. [2024-11-07 19:40:27,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 203 flow [2024-11-07 19:40:27,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:27,153 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 129 flow [2024-11-07 19:40:27,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-11-07 19:40:27,154 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -10 predicate places. [2024-11-07 19:40:27,154 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 129 flow [2024-11-07 19:40:27,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 19:40:27,154 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:27,154 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:27,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:40:27,155 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:27,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 421903637, now seen corresponding path program 1 times [2024-11-07 19:40:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095563056] [2024-11-07 19:40:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:27,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095563056] [2024-11-07 19:40:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095563056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444488546] [2024-11-07 19:40:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:27,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:27,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:27,288 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 19:40:27,290 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 19:40:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:27,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 19:40:27,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:27,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:27,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 25 [2024-11-07 19:40:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444488546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:27,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:27,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:40:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241573071] [2024-11-07 19:40:27,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:27,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:27,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:27,733 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:27,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 129 flow. Second operand has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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 19:40:27,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:27,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:27,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:27,910 INFO L124 PetriNetUnfolderBase]: 511/921 cut-off events. [2024-11-07 19:40:27,911 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-07 19:40:27,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 921 events. 511/921 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4708 event pairs, 169 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 1712. Up to 457 conditions per place. [2024-11-07 19:40:27,915 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 60 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-11-07 19:40:27,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 312 flow [2024-11-07 19:40:27,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:27,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-11-07 19:40:27,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-07 19:40:27,916 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 129 flow. Second operand 4 states and 176 transitions. [2024-11-07 19:40:27,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 312 flow [2024-11-07 19:40:27,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:27,918 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 142 flow [2024-11-07 19:40:27,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-11-07 19:40:27,919 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -8 predicate places. [2024-11-07 19:40:27,919 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 142 flow [2024-11-07 19:40:27,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 31.181818181818183) internal successors, (343), 11 states have internal predecessors, (343), 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 19:40:27,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:27,920 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:27,932 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 19:40:28,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:28,124 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:28,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1722492185, now seen corresponding path program 1 times [2024-11-07 19:40:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749635174] [2024-11-07 19:40:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:28,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749635174] [2024-11-07 19:40:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749635174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918860494] [2024-11-07 19:40:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:28,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:28,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:28,260 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 19:40:28,261 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 19:40:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:28,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 19:40:28,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:28,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:28,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:28,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 32 [2024-11-07 19:40:28,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:28,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918860494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:28,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:28,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-07 19:40:28,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133810732] [2024-11-07 19:40:28,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:28,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:40:28,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:40:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:40:29,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:29,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 142 flow. Second operand has 17 states, 17 states have (on average 30.764705882352942) internal successors, (523), 17 states have internal predecessors, (523), 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 19:40:29,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:29,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:29,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:29,659 INFO L124 PetriNetUnfolderBase]: 1073/2096 cut-off events. [2024-11-07 19:40:29,659 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-07 19:40:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4029 conditions, 2096 events. 1073/2096 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13395 event pairs, 434 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 2260. Up to 705 conditions per place. [2024-11-07 19:40:29,668 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 101 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-11-07 19:40:29,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 130 transitions, 546 flow [2024-11-07 19:40:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:40:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:40:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 347 transitions. [2024-11-07 19:40:29,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.677734375 [2024-11-07 19:40:29,685 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 142 flow. Second operand 8 states and 347 transitions. [2024-11-07 19:40:29,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 130 transitions, 546 flow [2024-11-07 19:40:29,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 130 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:29,687 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 228 flow [2024-11-07 19:40:29,687 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-11-07 19:40:29,687 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-11-07 19:40:29,688 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 228 flow [2024-11-07 19:40:29,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.764705882352942) internal successors, (523), 17 states have internal predecessors, (523), 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 19:40:29,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:29,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:29,700 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 19:40:29,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:29,892 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:29,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1678641019, now seen corresponding path program 1 times [2024-11-07 19:40:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:29,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503218825] [2024-11-07 19:40:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:29,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:29,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503218825] [2024-11-07 19:40:29,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503218825] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:29,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167182509] [2024-11-07 19:40:29,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:29,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:29,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:29,993 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 19:40:29,994 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 19:40:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:30,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-07 19:40:30,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:30,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:30,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 25 [2024-11-07 19:40:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:30,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167182509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:30,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:30,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:40:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250323020] [2024-11-07 19:40:30,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:30,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:40:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:40:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:40:30,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-07 19:40:30,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 228 flow. Second operand has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 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 19:40:30,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:30,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-07 19:40:30,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:30,611 INFO L124 PetriNetUnfolderBase]: 1851/3107 cut-off events. [2024-11-07 19:40:30,611 INFO L125 PetriNetUnfolderBase]: For 1771/1871 co-relation queries the response was YES. [2024-11-07 19:40:30,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 3107 events. 1851/3107 cut-off events. For 1771/1871 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17273 event pairs, 372 based on Foata normal form. 160/3046 useless extension candidates. Maximal degree in co-relation 4661. Up to 2119 conditions per place. [2024-11-07 19:40:30,625 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 66 selfloop transitions, 13 changer transitions 0/85 dead transitions. [2024-11-07 19:40:30,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 464 flow [2024-11-07 19:40:30,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:40:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:40:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-11-07 19:40:30,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-11-07 19:40:30,626 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 228 flow. Second operand 4 states and 150 transitions. [2024-11-07 19:40:30,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 464 flow [2024-11-07 19:40:30,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 457 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:30,630 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 299 flow [2024-11-07 19:40:30,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2024-11-07 19:40:30,630 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-11-07 19:40:30,630 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 299 flow [2024-11-07 19:40:30,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.727272727272727) internal successors, (261), 11 states have internal predecessors, (261), 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 19:40:30,631 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:30,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:30,642 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 19:40:30,834 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,SelfDestructingSolverStorable7 [2024-11-07 19:40:30,834 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:30,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash 498264771, now seen corresponding path program 1 times [2024-11-07 19:40:30,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:30,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828628123] [2024-11-07 19:40:30,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:30,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:30,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828628123] [2024-11-07 19:40:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828628123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131418087] [2024-11-07 19:40:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:30,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:30,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:30,959 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 19:40:30,960 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 19:40:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:31,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 19:40:31,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:31,086 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:31,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 25 [2024-11-07 19:40:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:31,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131418087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:31,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-07 19:40:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741350418] [2024-11-07 19:40:31,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:31,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:40:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:40:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:40:31,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-07 19:40:31,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 299 flow. Second operand has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 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 19:40:31,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:31,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-07 19:40:31,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:31,789 INFO L124 PetriNetUnfolderBase]: 1943/3246 cut-off events. [2024-11-07 19:40:31,789 INFO L125 PetriNetUnfolderBase]: For 2209/2339 co-relation queries the response was YES. [2024-11-07 19:40:31,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8440 conditions, 3246 events. 1943/3246 cut-off events. For 2209/2339 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17888 event pairs, 828 based on Foata normal form. 0/3031 useless extension candidates. Maximal degree in co-relation 5169. Up to 2490 conditions per place. [2024-11-07 19:40:31,802 INFO L140 encePairwiseOnDemand]: 49/64 looper letters, 91 selfloop transitions, 17 changer transitions 0/114 dead transitions. [2024-11-07 19:40:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 661 flow [2024-11-07 19:40:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:40:31,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:40:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-11-07 19:40:31,804 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-07 19:40:31,804 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 299 flow. Second operand 7 states and 248 transitions. [2024-11-07 19:40:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 661 flow [2024-11-07 19:40:31,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 632 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:31,811 INFO L231 Difference]: Finished difference. Result has 67 places, 72 transitions, 360 flow [2024-11-07 19:40:31,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=67, PETRI_TRANSITIONS=72} [2024-11-07 19:40:31,812 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2024-11-07 19:40:31,812 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 360 flow [2024-11-07 19:40:31,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.357142857142858) internal successors, (327), 14 states have internal predecessors, (327), 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 19:40:31,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:31,813 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:31,825 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 19:40:32,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:32,014 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:32,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash -756779850, now seen corresponding path program 2 times [2024-11-07 19:40:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564873024] [2024-11-07 19:40:32,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:32,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 19:40:32,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:32,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564873024] [2024-11-07 19:40:32,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564873024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:32,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271610485] [2024-11-07 19:40:32,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:40:32,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:32,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:32,150 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 19:40:32,152 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 19:40:32,201 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 19:40:32,201 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:40:32,202 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-07 19:40:32,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:32,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2024-11-07 19:40:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:40:32,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:40:32,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271610485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:32,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:32,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-11-07 19:40:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891784004] [2024-11-07 19:40:32,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:32,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:40:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:40:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:40:32,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 64 [2024-11-07 19:40:32,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 360 flow. Second operand has 12 states, 12 states have (on average 31.583333333333332) internal successors, (379), 12 states have internal predecessors, (379), 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 19:40:32,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:32,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 64 [2024-11-07 19:40:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:33,066 INFO L124 PetriNetUnfolderBase]: 1497/2717 cut-off events. [2024-11-07 19:40:33,067 INFO L125 PetriNetUnfolderBase]: For 1548/1548 co-relation queries the response was YES. [2024-11-07 19:40:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 2717 events. 1497/2717 cut-off events. For 1548/1548 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16664 event pairs, 764 based on Foata normal form. 0/2641 useless extension candidates. Maximal degree in co-relation 4378. Up to 1722 conditions per place. [2024-11-07 19:40:33,077 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 82 selfloop transitions, 10 changer transitions 0/106 dead transitions. [2024-11-07 19:40:33,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 721 flow [2024-11-07 19:40:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:40:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:40:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-07 19:40:33,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-11-07 19:40:33,079 INFO L175 Difference]: Start difference. First operand has 67 places, 72 transitions, 360 flow. Second operand 5 states and 198 transitions. [2024-11-07 19:40:33,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 721 flow [2024-11-07 19:40:33,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 680 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-07 19:40:33,083 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 347 flow [2024-11-07 19:40:33,084 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2024-11-07 19:40:33,085 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 4 predicate places. [2024-11-07 19:40:33,085 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 347 flow [2024-11-07 19:40:33,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.583333333333332) internal successors, (379), 12 states have internal predecessors, (379), 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 19:40:33,085 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:33,085 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:40:33,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-07 19:40:33,285 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,SelfDestructingSolverStorable9 [2024-11-07 19:40:33,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 950243014, now seen corresponding path program 2 times [2024-11-07 19:40:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668424435] [2024-11-07 19:40:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:40:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:33,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668424435] [2024-11-07 19:40:33,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668424435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:33,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:33,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:40:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949964402] [2024-11-07 19:40:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:33,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:33,518 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 64 [2024-11-07 19:40:33,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 347 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 19:40:33,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:33,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 64 [2024-11-07 19:40:33,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:33,699 INFO L124 PetriNetUnfolderBase]: 1495/2507 cut-off events. [2024-11-07 19:40:33,699 INFO L125 PetriNetUnfolderBase]: For 3023/3023 co-relation queries the response was YES. [2024-11-07 19:40:33,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 2507 events. 1495/2507 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13308 event pairs, 442 based on Foata normal form. 96/2508 useless extension candidates. Maximal degree in co-relation 4226. Up to 1264 conditions per place. [2024-11-07 19:40:33,706 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 42 selfloop transitions, 26 changer transitions 0/73 dead transitions. [2024-11-07 19:40:33,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 518 flow [2024-11-07 19:40:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:40:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:40:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-07 19:40:33,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-07 19:40:33,707 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 347 flow. Second operand 5 states and 152 transitions. [2024-11-07 19:40:33,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 518 flow [2024-11-07 19:40:33,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 484 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:33,709 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 343 flow [2024-11-07 19:40:33,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2024-11-07 19:40:33,710 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-11-07 19:40:33,710 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 343 flow [2024-11-07 19:40:33,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 19:40:33,710 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:33,710 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] [2024-11-07 19:40:33,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:40:33,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:33,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:33,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1765371169, now seen corresponding path program 1 times [2024-11-07 19:40:33,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:33,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136868937] [2024-11-07 19:40:33,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:33,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:33,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:33,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:33,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136868937] [2024-11-07 19:40:33,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136868937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:33,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:33,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:40:33,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191128074] [2024-11-07 19:40:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:33,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:40:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:40:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:40:33,748 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 64 [2024-11-07 19:40:33,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 19:40:33,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:33,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 64 [2024-11-07 19:40:33,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:33,903 INFO L124 PetriNetUnfolderBase]: 1391/2375 cut-off events. [2024-11-07 19:40:33,904 INFO L125 PetriNetUnfolderBase]: For 2254/2254 co-relation queries the response was YES. [2024-11-07 19:40:33,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6677 conditions, 2375 events. 1391/2375 cut-off events. For 2254/2254 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12852 event pairs, 344 based on Foata normal form. 2/2345 useless extension candidates. Maximal degree in co-relation 4307. Up to 1795 conditions per place. [2024-11-07 19:40:33,909 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 65 selfloop transitions, 13 changer transitions 1/84 dead transitions. [2024-11-07 19:40:33,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 600 flow [2024-11-07 19:40:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:40:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:40:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-07 19:40:33,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7552083333333334 [2024-11-07 19:40:33,910 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 343 flow. Second operand 3 states and 145 transitions. [2024-11-07 19:40:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 600 flow [2024-11-07 19:40:33,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 530 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:33,915 INFO L231 Difference]: Finished difference. Result has 55 places, 68 transitions, 388 flow [2024-11-07 19:40:33,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=55, PETRI_TRANSITIONS=68} [2024-11-07 19:40:33,915 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2024-11-07 19:40:33,915 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 68 transitions, 388 flow [2024-11-07 19:40:33,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 19:40:33,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:33,916 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 19:40:33,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:40:33,916 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:33,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1902787779, now seen corresponding path program 1 times [2024-11-07 19:40:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129110247] [2024-11-07 19:40:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:34,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:34,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129110247] [2024-11-07 19:40:34,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129110247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:34,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:34,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 19:40:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722513116] [2024-11-07 19:40:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:34,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:40:34,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:34,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:40:34,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:40:34,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:34,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 68 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 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 19:40:34,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:34,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:34,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:34,525 INFO L124 PetriNetUnfolderBase]: 1603/2613 cut-off events. [2024-11-07 19:40:34,525 INFO L125 PetriNetUnfolderBase]: For 1859/1859 co-relation queries the response was YES. [2024-11-07 19:40:34,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6913 conditions, 2613 events. 1603/2613 cut-off events. For 1859/1859 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13044 event pairs, 354 based on Foata normal form. 16/2385 useless extension candidates. Maximal degree in co-relation 4094. Up to 956 conditions per place. [2024-11-07 19:40:34,533 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 150 selfloop transitions, 40 changer transitions 0/191 dead transitions. [2024-11-07 19:40:34,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 191 transitions, 1158 flow [2024-11-07 19:40:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:40:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:40:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 475 transitions. [2024-11-07 19:40:34,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6184895833333334 [2024-11-07 19:40:34,534 INFO L175 Difference]: Start difference. First operand has 55 places, 68 transitions, 388 flow. Second operand 12 states and 475 transitions. [2024-11-07 19:40:34,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 191 transitions, 1158 flow [2024-11-07 19:40:34,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 191 transitions, 1105 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:34,540 INFO L231 Difference]: Finished difference. Result has 73 places, 83 transitions, 572 flow [2024-11-07 19:40:34,540 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=572, PETRI_PLACES=73, PETRI_TRANSITIONS=83} [2024-11-07 19:40:34,541 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 12 predicate places. [2024-11-07 19:40:34,541 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 83 transitions, 572 flow [2024-11-07 19:40:34,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.0) internal successors, (203), 7 states have internal predecessors, (203), 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 19:40:34,541 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:34,541 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] [2024-11-07 19:40:34,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:40:34,541 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:34,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 728177267, now seen corresponding path program 1 times [2024-11-07 19:40:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564920438] [2024-11-07 19:40:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:34,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:34,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564920438] [2024-11-07 19:40:34,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564920438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:34,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:34,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:40:34,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029923018] [2024-11-07 19:40:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:34,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:40:34,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:40:34,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:40:34,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-11-07 19:40:34,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 83 transitions, 572 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:40:34,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:34,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-11-07 19:40:34,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:34,976 INFO L124 PetriNetUnfolderBase]: 1539/2561 cut-off events. [2024-11-07 19:40:34,976 INFO L125 PetriNetUnfolderBase]: For 4678/4686 co-relation queries the response was YES. [2024-11-07 19:40:34,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8092 conditions, 2561 events. 1539/2561 cut-off events. For 4678/4686 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 13206 event pairs, 566 based on Foata normal form. 14/2493 useless extension candidates. Maximal degree in co-relation 5596. Up to 1400 conditions per place. [2024-11-07 19:40:35,001 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 114 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-11-07 19:40:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 140 transitions, 1066 flow [2024-11-07 19:40:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:40:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:40:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-11-07 19:40:35,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.715625 [2024-11-07 19:40:35,002 INFO L175 Difference]: Start difference. First operand has 73 places, 83 transitions, 572 flow. Second operand 5 states and 229 transitions. [2024-11-07 19:40:35,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 140 transitions, 1066 flow [2024-11-07 19:40:35,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 140 transitions, 1031 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:40:35,013 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 652 flow [2024-11-07 19:40:35,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2024-11-07 19:40:35,014 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 16 predicate places. [2024-11-07 19:40:35,014 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 652 flow [2024-11-07 19:40:35,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 19:40:35,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:35,014 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] [2024-11-07 19:40:35,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:40:35,014 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:35,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1859984861, now seen corresponding path program 2 times [2024-11-07 19:40:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321445984] [2024-11-07 19:40:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:35,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:35,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:35,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321445984] [2024-11-07 19:40:35,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321445984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:35,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:35,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:35,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602579588] [2024-11-07 19:40:35,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:35,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:35,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:35,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:35,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:35,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:35,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 652 flow. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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 19:40:35,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:35,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:35,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:35,395 INFO L124 PetriNetUnfolderBase]: 1589/2617 cut-off events. [2024-11-07 19:40:35,396 INFO L125 PetriNetUnfolderBase]: For 6768/6768 co-relation queries the response was YES. [2024-11-07 19:40:35,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9223 conditions, 2617 events. 1589/2617 cut-off events. For 6768/6768 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12756 event pairs, 766 based on Foata normal form. 0/2527 useless extension candidates. Maximal degree in co-relation 8880. Up to 1916 conditions per place. [2024-11-07 19:40:35,421 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 100 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-11-07 19:40:35,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 1160 flow [2024-11-07 19:40:35,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:40:35,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:40:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-11-07 19:40:35,422 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5859375 [2024-11-07 19:40:35,422 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 652 flow. Second operand 6 states and 225 transitions. [2024-11-07 19:40:35,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 1160 flow [2024-11-07 19:40:35,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 1127 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:35,429 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 707 flow [2024-11-07 19:40:35,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=707, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-11-07 19:40:35,430 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 22 predicate places. [2024-11-07 19:40:35,430 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 707 flow [2024-11-07 19:40:35,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 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 19:40:35,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:35,430 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 19:40:35,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:40:35,431 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:35,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash 248279321, now seen corresponding path program 1 times [2024-11-07 19:40:35,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:35,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986840486] [2024-11-07 19:40:35,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:35,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:35,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:35,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986840486] [2024-11-07 19:40:35,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986840486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:35,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:35,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:35,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043301155] [2024-11-07 19:40:35,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:35,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:35,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:35,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:35,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:35,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:35,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 707 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:35,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:35,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:35,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:35,831 INFO L124 PetriNetUnfolderBase]: 1803/3005 cut-off events. [2024-11-07 19:40:35,831 INFO L125 PetriNetUnfolderBase]: For 7696/7696 co-relation queries the response was YES. [2024-11-07 19:40:35,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10867 conditions, 3005 events. 1803/3005 cut-off events. For 7696/7696 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15876 event pairs, 642 based on Foata normal form. 24/2957 useless extension candidates. Maximal degree in co-relation 10100. Up to 1554 conditions per place. [2024-11-07 19:40:35,839 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 116 selfloop transitions, 37 changer transitions 0/154 dead transitions. [2024-11-07 19:40:35,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 154 transitions, 1405 flow [2024-11-07 19:40:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:40:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:40:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-11-07 19:40:35,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6536458333333334 [2024-11-07 19:40:35,843 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 707 flow. Second operand 6 states and 251 transitions. [2024-11-07 19:40:35,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 154 transitions, 1405 flow [2024-11-07 19:40:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 154 transitions, 1352 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:35,855 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 993 flow [2024-11-07 19:40:35,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=993, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2024-11-07 19:40:35,855 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 26 predicate places. [2024-11-07 19:40:35,855 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 993 flow [2024-11-07 19:40:35,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:35,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:35,855 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 19:40:35,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 19:40:35,855 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:35,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -391368953, now seen corresponding path program 2 times [2024-11-07 19:40:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931173919] [2024-11-07 19:40:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:35,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931173919] [2024-11-07 19:40:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931173919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:35,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:35,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:40:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210810052] [2024-11-07 19:40:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:35,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:40:35,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:40:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:40:35,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:35,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 993 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:35,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:35,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:35,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:36,221 INFO L124 PetriNetUnfolderBase]: 1757/2893 cut-off events. [2024-11-07 19:40:36,222 INFO L125 PetriNetUnfolderBase]: For 8444/8444 co-relation queries the response was YES. [2024-11-07 19:40:36,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10870 conditions, 2893 events. 1757/2893 cut-off events. For 8444/8444 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14892 event pairs, 650 based on Foata normal form. 6/2833 useless extension candidates. Maximal degree in co-relation 10248. Up to 1554 conditions per place. [2024-11-07 19:40:36,231 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 103 selfloop transitions, 36 changer transitions 0/140 dead transitions. [2024-11-07 19:40:36,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1387 flow [2024-11-07 19:40:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:40:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:40:36,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 211 transitions. [2024-11-07 19:40:36,232 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.659375 [2024-11-07 19:40:36,232 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 993 flow. Second operand 5 states and 211 transitions. [2024-11-07 19:40:36,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1387 flow [2024-11-07 19:40:36,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 1354 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-07 19:40:36,246 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 1044 flow [2024-11-07 19:40:36,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-11-07 19:40:36,247 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 30 predicate places. [2024-11-07 19:40:36,247 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 1044 flow [2024-11-07 19:40:36,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:36,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:36,247 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 19:40:36,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 19:40:36,247 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:36,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1641354571, now seen corresponding path program 3 times [2024-11-07 19:40:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:36,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693636717] [2024-11-07 19:40:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:36,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:36,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693636717] [2024-11-07 19:40:36,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693636717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:36,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:36,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:40:36,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646216859] [2024-11-07 19:40:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:36,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:40:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:36,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:40:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:40:36,337 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:36,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 1044 flow. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:36,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:36,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:36,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:36,597 INFO L124 PetriNetUnfolderBase]: 1735/2847 cut-off events. [2024-11-07 19:40:36,597 INFO L125 PetriNetUnfolderBase]: For 10184/10184 co-relation queries the response was YES. [2024-11-07 19:40:36,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10918 conditions, 2847 events. 1735/2847 cut-off events. For 10184/10184 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 14060 event pairs, 990 based on Foata normal form. 6/2787 useless extension candidates. Maximal degree in co-relation 10652. Up to 2450 conditions per place. [2024-11-07 19:40:36,609 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 86 selfloop transitions, 31 changer transitions 0/118 dead transitions. [2024-11-07 19:40:36,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 1330 flow [2024-11-07 19:40:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:40:36,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:40:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-07 19:40:36,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-11-07 19:40:36,610 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 1044 flow. Second operand 5 states and 191 transitions. [2024-11-07 19:40:36,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 1330 flow [2024-11-07 19:40:36,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 118 transitions, 1267 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:36,626 INFO L231 Difference]: Finished difference. Result has 92 places, 102 transitions, 1035 flow [2024-11-07 19:40:36,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=92, PETRI_TRANSITIONS=102} [2024-11-07 19:40:36,626 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 31 predicate places. [2024-11-07 19:40:36,626 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 102 transitions, 1035 flow [2024-11-07 19:40:36,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:40:36,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:36,627 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 19:40:36,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 19:40:36,627 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:36,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash 179616307, now seen corresponding path program 4 times [2024-11-07 19:40:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:36,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107777950] [2024-11-07 19:40:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:36,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:36,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:36,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107777950] [2024-11-07 19:40:36,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107777950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:36,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:36,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:36,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437445828] [2024-11-07 19:40:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:36,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:36,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:36,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:36,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 102 transitions, 1035 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:36,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:36,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:36,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:37,006 INFO L124 PetriNetUnfolderBase]: 1855/3047 cut-off events. [2024-11-07 19:40:37,006 INFO L125 PetriNetUnfolderBase]: For 10662/10662 co-relation queries the response was YES. [2024-11-07 19:40:37,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11499 conditions, 3047 events. 1855/3047 cut-off events. For 10662/10662 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 15339 event pairs, 982 based on Foata normal form. 24/2997 useless extension candidates. Maximal degree in co-relation 10440. Up to 2482 conditions per place. [2024-11-07 19:40:37,016 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 97 selfloop transitions, 39 changer transitions 0/137 dead transitions. [2024-11-07 19:40:37,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 1520 flow [2024-11-07 19:40:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:40:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:40:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-11-07 19:40:37,017 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-11-07 19:40:37,017 INFO L175 Difference]: Start difference. First operand has 92 places, 102 transitions, 1035 flow. Second operand 6 states and 230 transitions. [2024-11-07 19:40:37,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 1520 flow [2024-11-07 19:40:37,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 137 transitions, 1427 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-11-07 19:40:37,029 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 1154 flow [2024-11-07 19:40:37,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1154, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2024-11-07 19:40:37,030 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 32 predicate places. [2024-11-07 19:40:37,030 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 1154 flow [2024-11-07 19:40:37,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:37,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:37,030 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 19:40:37,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 19:40:37,030 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:37,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:37,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1889151449, now seen corresponding path program 5 times [2024-11-07 19:40:37,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:37,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781086850] [2024-11-07 19:40:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781086850] [2024-11-07 19:40:37,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781086850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:37,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:37,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054656967] [2024-11-07 19:40:37,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:37,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:37,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:37,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 1154 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:37,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:37,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:37,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:37,429 INFO L124 PetriNetUnfolderBase]: 1951/3207 cut-off events. [2024-11-07 19:40:37,429 INFO L125 PetriNetUnfolderBase]: For 12159/12159 co-relation queries the response was YES. [2024-11-07 19:40:37,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12116 conditions, 3207 events. 1951/3207 cut-off events. For 12159/12159 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 16425 event pairs, 1060 based on Foata normal form. 24/3149 useless extension candidates. Maximal degree in co-relation 11050. Up to 2642 conditions per place. [2024-11-07 19:40:37,439 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 106 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-11-07 19:40:37,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 1617 flow [2024-11-07 19:40:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:40:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:40:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-11-07 19:40:37,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-11-07 19:40:37,441 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 1154 flow. Second operand 6 states and 226 transitions. [2024-11-07 19:40:37,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 1617 flow [2024-11-07 19:40:37,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 143 transitions, 1544 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:37,455 INFO L231 Difference]: Finished difference. Result has 96 places, 114 transitions, 1227 flow [2024-11-07 19:40:37,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1227, PETRI_PLACES=96, PETRI_TRANSITIONS=114} [2024-11-07 19:40:37,456 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-11-07 19:40:37,456 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 114 transitions, 1227 flow [2024-11-07 19:40:37,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:37,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:37,456 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 19:40:37,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 19:40:37,456 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:37,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash 488131849, now seen corresponding path program 6 times [2024-11-07 19:40:37,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:37,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13573536] [2024-11-07 19:40:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13573536] [2024-11-07 19:40:37,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13573536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:37,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:37,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 19:40:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267502366] [2024-11-07 19:40:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:37,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:40:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:37,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:40:37,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 19:40:37,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:37,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 114 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:37,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:37,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:37,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:37,837 INFO L124 PetriNetUnfolderBase]: 1923/3173 cut-off events. [2024-11-07 19:40:37,837 INFO L125 PetriNetUnfolderBase]: For 12030/12030 co-relation queries the response was YES. [2024-11-07 19:40:37,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11884 conditions, 3173 events. 1923/3173 cut-off events. For 12030/12030 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 16185 event pairs, 750 based on Foata normal form. 24/3115 useless extension candidates. Maximal degree in co-relation 11206. Up to 1706 conditions per place. [2024-11-07 19:40:37,846 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 114 selfloop transitions, 42 changer transitions 0/157 dead transitions. [2024-11-07 19:40:37,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 1700 flow [2024-11-07 19:40:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:40:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:40:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 268 transitions. [2024-11-07 19:40:37,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-07 19:40:37,850 INFO L175 Difference]: Start difference. First operand has 96 places, 114 transitions, 1227 flow. Second operand 7 states and 268 transitions. [2024-11-07 19:40:37,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 1700 flow [2024-11-07 19:40:37,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 157 transitions, 1597 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-11-07 19:40:37,865 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 1189 flow [2024-11-07 19:40:37,865 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1189, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2024-11-07 19:40:37,865 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 35 predicate places. [2024-11-07 19:40:37,865 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 1189 flow [2024-11-07 19:40:37,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 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 19:40:37,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:37,865 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] [2024-11-07 19:40:37,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 19:40:37,866 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:37,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash 983694879, now seen corresponding path program 1 times [2024-11-07 19:40:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416763095] [2024-11-07 19:40:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:37,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416763095] [2024-11-07 19:40:37,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416763095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:37,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158826595] [2024-11-07 19:40:37,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:37,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:37,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:37,964 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 19:40:37,965 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 19:40:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:38,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 19:40:38,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:38,048 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 15 treesize of output 1 [2024-11-07 19:40:38,151 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 15 treesize of output 7 [2024-11-07 19:40:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:38,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:38,370 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 33 treesize of output 29 [2024-11-07 19:40:38,381 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-07 19:40:38,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 41 [2024-11-07 19:40:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:38,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158826595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:38,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:38,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-07 19:40:38,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606362268] [2024-11-07 19:40:38,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:38,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-07 19:40:38,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:38,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-07 19:40:38,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-07 19:40:39,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 64 [2024-11-07 19:40:39,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 1189 flow. Second operand has 18 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 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 19:40:39,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:39,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 64 [2024-11-07 19:40:39,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:40,917 INFO L124 PetriNetUnfolderBase]: 3220/5453 cut-off events. [2024-11-07 19:40:40,917 INFO L125 PetriNetUnfolderBase]: For 14578/14580 co-relation queries the response was YES. [2024-11-07 19:40:40,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18903 conditions, 5453 events. 3220/5453 cut-off events. For 14578/14580 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31469 event pairs, 301 based on Foata normal form. 47/5339 useless extension candidates. Maximal degree in co-relation 17863. Up to 901 conditions per place. [2024-11-07 19:40:40,937 INFO L140 encePairwiseOnDemand]: 41/64 looper letters, 258 selfloop transitions, 121 changer transitions 233/615 dead transitions. [2024-11-07 19:40:40,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 615 transitions, 4708 flow [2024-11-07 19:40:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-07 19:40:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-07 19:40:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1586 transitions. [2024-11-07 19:40:40,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521381578947368 [2024-11-07 19:40:40,939 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 1189 flow. Second operand 38 states and 1586 transitions. [2024-11-07 19:40:40,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 615 transitions, 4708 flow [2024-11-07 19:40:40,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 615 transitions, 4446 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-07 19:40:40,962 INFO L231 Difference]: Finished difference. Result has 158 places, 172 transitions, 1899 flow [2024-11-07 19:40:40,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1899, PETRI_PLACES=158, PETRI_TRANSITIONS=172} [2024-11-07 19:40:40,962 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-07 19:40:40,962 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 172 transitions, 1899 flow [2024-11-07 19:40:40,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 31.944444444444443) internal successors, (575), 18 states have internal predecessors, (575), 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 19:40:40,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:40,963 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] [2024-11-07 19:40:40,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-07 19:40:41,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:41,166 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:41,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1204907785, now seen corresponding path program 2 times [2024-11-07 19:40:41,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:41,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951264508] [2024-11-07 19:40:41,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:41,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:41,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:41,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:41,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951264508] [2024-11-07 19:40:41,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951264508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:41,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:41,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 19:40:41,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548141644] [2024-11-07 19:40:41,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:41,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:40:41,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:41,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:40:41,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:40:45,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:40:45,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:45,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 172 transitions, 1899 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:45,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:45,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:45,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:45,895 INFO L124 PetriNetUnfolderBase]: 2294/3938 cut-off events. [2024-11-07 19:40:45,896 INFO L125 PetriNetUnfolderBase]: For 42851/42851 co-relation queries the response was YES. [2024-11-07 19:40:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22194 conditions, 3938 events. 2294/3938 cut-off events. For 42851/42851 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20973 event pairs, 958 based on Foata normal form. 36/3974 useless extension candidates. Maximal degree in co-relation 22049. Up to 2424 conditions per place. [2024-11-07 19:40:45,915 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 199 selfloop transitions, 59 changer transitions 8/267 dead transitions. [2024-11-07 19:40:45,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 267 transitions, 3374 flow [2024-11-07 19:40:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:40:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:40:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2024-11-07 19:40:45,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5954861111111112 [2024-11-07 19:40:45,916 INFO L175 Difference]: Start difference. First operand has 158 places, 172 transitions, 1899 flow. Second operand 9 states and 343 transitions. [2024-11-07 19:40:45,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 267 transitions, 3374 flow [2024-11-07 19:40:45,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 267 transitions, 2970 flow, removed 182 selfloop flow, removed 15 redundant places. [2024-11-07 19:40:45,994 INFO L231 Difference]: Finished difference. Result has 144 places, 188 transitions, 2022 flow [2024-11-07 19:40:45,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2022, PETRI_PLACES=144, PETRI_TRANSITIONS=188} [2024-11-07 19:40:45,994 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 83 predicate places. [2024-11-07 19:40:45,994 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 188 transitions, 2022 flow [2024-11-07 19:40:45,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:45,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:45,995 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] [2024-11-07 19:40:45,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 19:40:45,995 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:45,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1862719187, now seen corresponding path program 3 times [2024-11-07 19:40:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212089698] [2024-11-07 19:40:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:46,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:46,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212089698] [2024-11-07 19:40:46,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212089698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:46,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:46,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 19:40:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304452306] [2024-11-07 19:40:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:46,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:40:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:46,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:40:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:40:46,215 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:46,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 188 transitions, 2022 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:46,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:46,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:46,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:46,659 INFO L124 PetriNetUnfolderBase]: 2351/4043 cut-off events. [2024-11-07 19:40:46,659 INFO L125 PetriNetUnfolderBase]: For 34897/34897 co-relation queries the response was YES. [2024-11-07 19:40:46,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21331 conditions, 4043 events. 2351/4043 cut-off events. For 34897/34897 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 21824 event pairs, 1109 based on Foata normal form. 36/4079 useless extension candidates. Maximal degree in co-relation 18826. Up to 3008 conditions per place. [2024-11-07 19:40:46,675 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 189 selfloop transitions, 64 changer transitions 9/263 dead transitions. [2024-11-07 19:40:46,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 263 transitions, 3200 flow [2024-11-07 19:40:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:40:46,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:40:46,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-11-07 19:40:46,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.564453125 [2024-11-07 19:40:46,676 INFO L175 Difference]: Start difference. First operand has 144 places, 188 transitions, 2022 flow. Second operand 8 states and 289 transitions. [2024-11-07 19:40:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 263 transitions, 3200 flow [2024-11-07 19:40:46,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 263 transitions, 3100 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:46,733 INFO L231 Difference]: Finished difference. Result has 149 places, 198 transitions, 2261 flow [2024-11-07 19:40:46,733 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2261, PETRI_PLACES=149, PETRI_TRANSITIONS=198} [2024-11-07 19:40:46,734 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 88 predicate places. [2024-11-07 19:40:46,734 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 198 transitions, 2261 flow [2024-11-07 19:40:46,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:46,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:46,734 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] [2024-11-07 19:40:46,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 19:40:46,734 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:46,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2056061447, now seen corresponding path program 4 times [2024-11-07 19:40:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500574877] [2024-11-07 19:40:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:46,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500574877] [2024-11-07 19:40:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500574877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:46,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:46,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 19:40:46,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097977334] [2024-11-07 19:40:46,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:46,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:40:46,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:40:46,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:40:46,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:46,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 198 transitions, 2261 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:46,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:46,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:46,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:47,468 INFO L124 PetriNetUnfolderBase]: 2453/4235 cut-off events. [2024-11-07 19:40:47,468 INFO L125 PetriNetUnfolderBase]: For 37123/37123 co-relation queries the response was YES. [2024-11-07 19:40:47,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22512 conditions, 4235 events. 2453/4235 cut-off events. For 37123/37123 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 23354 event pairs, 1219 based on Foata normal form. 36/4271 useless extension candidates. Maximal degree in co-relation 19748. Up to 3450 conditions per place. [2024-11-07 19:40:47,488 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 214 selfloop transitions, 57 changer transitions 8/280 dead transitions. [2024-11-07 19:40:47,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 280 transitions, 3510 flow [2024-11-07 19:40:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 19:40:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-07 19:40:47,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 353 transitions. [2024-11-07 19:40:47,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515625 [2024-11-07 19:40:47,489 INFO L175 Difference]: Start difference. First operand has 149 places, 198 transitions, 2261 flow. Second operand 10 states and 353 transitions. [2024-11-07 19:40:47,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 280 transitions, 3510 flow [2024-11-07 19:40:47,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 280 transitions, 3432 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-07 19:40:47,558 INFO L231 Difference]: Finished difference. Result has 158 places, 210 transitions, 2534 flow [2024-11-07 19:40:47,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2534, PETRI_PLACES=158, PETRI_TRANSITIONS=210} [2024-11-07 19:40:47,558 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 97 predicate places. [2024-11-07 19:40:47,558 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 210 transitions, 2534 flow [2024-11-07 19:40:47,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:47,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:47,559 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] [2024-11-07 19:40:47,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 19:40:47,559 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:47,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1844943513, now seen corresponding path program 5 times [2024-11-07 19:40:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771608112] [2024-11-07 19:40:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:48,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:48,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771608112] [2024-11-07 19:40:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771608112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:48,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-07 19:40:48,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808936413] [2024-11-07 19:40:48,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:48,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:40:48,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:48,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:40:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:40:48,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:48,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 210 transitions, 2534 flow. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:48,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:48,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:48,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:48,732 INFO L124 PetriNetUnfolderBase]: 2535/4377 cut-off events. [2024-11-07 19:40:48,732 INFO L125 PetriNetUnfolderBase]: For 41183/41183 co-relation queries the response was YES. [2024-11-07 19:40:48,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23851 conditions, 4377 events. 2535/4377 cut-off events. For 41183/41183 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 24346 event pairs, 1107 based on Foata normal form. 36/4413 useless extension candidates. Maximal degree in co-relation 21651. Up to 2879 conditions per place. [2024-11-07 19:40:48,755 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 197 selfloop transitions, 86 changer transitions 10/294 dead transitions. [2024-11-07 19:40:48,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 294 transitions, 3858 flow [2024-11-07 19:40:48,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:40:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:40:48,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 290 transitions. [2024-11-07 19:40:48,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56640625 [2024-11-07 19:40:48,756 INFO L175 Difference]: Start difference. First operand has 158 places, 210 transitions, 2534 flow. Second operand 8 states and 290 transitions. [2024-11-07 19:40:48,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 294 transitions, 3858 flow [2024-11-07 19:40:48,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 294 transitions, 3743 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-07 19:40:48,833 INFO L231 Difference]: Finished difference. Result has 162 places, 219 transitions, 2802 flow [2024-11-07 19:40:48,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2802, PETRI_PLACES=162, PETRI_TRANSITIONS=219} [2024-11-07 19:40:48,834 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 101 predicate places. [2024-11-07 19:40:48,834 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 219 transitions, 2802 flow [2024-11-07 19:40:48,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 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 19:40:48,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:48,834 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] [2024-11-07 19:40:48,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 19:40:48,834 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:48,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -599957261, now seen corresponding path program 6 times [2024-11-07 19:40:48,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:48,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167706557] [2024-11-07 19:40:48,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:48,980 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 19:40:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167706557] [2024-11-07 19:40:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167706557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:40:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:40:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 19:40:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933111557] [2024-11-07 19:40:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:40:48,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:40:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:40:48,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:40:49,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:49,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 219 transitions, 2802 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 19:40:49,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:49,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:49,557 INFO L124 PetriNetUnfolderBase]: 2479/4321 cut-off events. [2024-11-07 19:40:49,557 INFO L125 PetriNetUnfolderBase]: For 42257/42257 co-relation queries the response was YES. [2024-11-07 19:40:49,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23869 conditions, 4321 events. 2479/4321 cut-off events. For 42257/42257 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24176 event pairs, 962 based on Foata normal form. 54/4375 useless extension candidates. Maximal degree in co-relation 22183. Up to 2249 conditions per place. [2024-11-07 19:40:49,575 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 193 selfloop transitions, 94 changer transitions 17/305 dead transitions. [2024-11-07 19:40:49,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 305 transitions, 4176 flow [2024-11-07 19:40:49,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:40:49,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:40:49,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-11-07 19:40:49,576 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5803571428571429 [2024-11-07 19:40:49,576 INFO L175 Difference]: Start difference. First operand has 162 places, 219 transitions, 2802 flow. Second operand 7 states and 260 transitions. [2024-11-07 19:40:49,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 305 transitions, 4176 flow [2024-11-07 19:40:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 305 transitions, 3999 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-11-07 19:40:49,650 INFO L231 Difference]: Finished difference. Result has 163 places, 222 transitions, 2892 flow [2024-11-07 19:40:49,651 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2625, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2892, PETRI_PLACES=163, PETRI_TRANSITIONS=222} [2024-11-07 19:40:49,651 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 102 predicate places. [2024-11-07 19:40:49,651 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 222 transitions, 2892 flow [2024-11-07 19:40:49,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 19:40:49,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:49,651 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] [2024-11-07 19:40:49,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-07 19:40:49,651 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:49,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:49,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1619639236, now seen corresponding path program 1 times [2024-11-07 19:40:49,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:49,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753233943] [2024-11-07 19:40:49,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:49,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-07 19:40:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753233943] [2024-11-07 19:40:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753233943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150023827] [2024-11-07 19:40:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:49,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:49,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:49,755 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 19:40:49,756 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 19:40:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:49,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-07 19:40:49,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:50,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:50,323 INFO L349 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2024-11-07 19:40:50,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 53 [2024-11-07 19:40:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:40:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150023827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:51,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 27 [2024-11-07 19:40:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435382779] [2024-11-07 19:40:51,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:51,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-07 19:40:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-07 19:40:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2024-11-07 19:40:52,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:52,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 222 transitions, 2892 flow. Second operand has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 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 19:40:52,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:52,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:52,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:53,843 INFO L124 PetriNetUnfolderBase]: 3153/5458 cut-off events. [2024-11-07 19:40:53,843 INFO L125 PetriNetUnfolderBase]: For 57796/57796 co-relation queries the response was YES. [2024-11-07 19:40:53,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 5458 events. 3153/5458 cut-off events. For 57796/57796 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 31673 event pairs, 584 based on Foata normal form. 44/5502 useless extension candidates. Maximal degree in co-relation 29214. Up to 2886 conditions per place. [2024-11-07 19:40:53,918 INFO L140 encePairwiseOnDemand]: 42/64 looper letters, 258 selfloop transitions, 110 changer transitions 127/496 dead transitions. [2024-11-07 19:40:53,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 496 transitions, 6451 flow [2024-11-07 19:40:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-07 19:40:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-07 19:40:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1236 transitions. [2024-11-07 19:40:53,920 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517857142857143 [2024-11-07 19:40:53,920 INFO L175 Difference]: Start difference. First operand has 163 places, 222 transitions, 2892 flow. Second operand 35 states and 1236 transitions. [2024-11-07 19:40:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 496 transitions, 6451 flow [2024-11-07 19:40:54,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 496 transitions, 6261 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-07 19:40:54,023 INFO L231 Difference]: Finished difference. Result has 203 places, 216 transitions, 3038 flow [2024-11-07 19:40:54,023 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3038, PETRI_PLACES=203, PETRI_TRANSITIONS=216} [2024-11-07 19:40:54,023 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 142 predicate places. [2024-11-07 19:40:54,023 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 216 transitions, 3038 flow [2024-11-07 19:40:54,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 28.88888888888889) internal successors, (780), 27 states have internal predecessors, (780), 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 19:40:54,023 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:40:54,023 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 19:40:54,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-07 19:40:54,224 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,SelfDestructingSolverStorable27 [2024-11-07 19:40:54,224 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:40:54,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:40:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash 732822712, now seen corresponding path program 1 times [2024-11-07 19:40:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:40:54,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36128054] [2024-11-07 19:40:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:54,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:40:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:40:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:40:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36128054] [2024-11-07 19:40:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36128054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:40:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234137990] [2024-11-07 19:40:54,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:40:54,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:40:54,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:40:54,389 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 19:40:54,390 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 19:40:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:40:54,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 19:40:54,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:40:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:40:54,582 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:40:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:40:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234137990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:40:54,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:40:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2024-11-07 19:40:54,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32569056] [2024-11-07 19:40:54,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:40:54,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-07 19:40:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:40:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-07 19:40:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-07 19:40:54,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:40:54,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 216 transitions, 3038 flow. Second operand has 24 states, 24 states have (on average 28.166666666666668) internal successors, (676), 24 states have internal predecessors, (676), 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 19:40:54,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:40:54,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:40:54,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:40:58,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:02,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:06,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:10,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:16,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:20,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:21,025 INFO L124 PetriNetUnfolderBase]: 2900/4961 cut-off events. [2024-11-07 19:41:21,026 INFO L125 PetriNetUnfolderBase]: For 62446/62446 co-relation queries the response was YES. [2024-11-07 19:41:21,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30259 conditions, 4961 events. 2900/4961 cut-off events. For 62446/62446 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 28185 event pairs, 1325 based on Foata normal form. 36/4997 useless extension candidates. Maximal degree in co-relation 30160. Up to 3541 conditions per place. [2024-11-07 19:41:21,057 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 291 selfloop transitions, 113 changer transitions 0/405 dead transitions. [2024-11-07 19:41:21,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 405 transitions, 5405 flow [2024-11-07 19:41:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-07 19:41:21,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-07 19:41:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1050 transitions. [2024-11-07 19:41:21,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5126953125 [2024-11-07 19:41:21,058 INFO L175 Difference]: Start difference. First operand has 203 places, 216 transitions, 3038 flow. Second operand 32 states and 1050 transitions. [2024-11-07 19:41:21,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 405 transitions, 5405 flow [2024-11-07 19:41:21,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 405 transitions, 4864 flow, removed 210 selfloop flow, removed 19 redundant places. [2024-11-07 19:41:21,198 INFO L231 Difference]: Finished difference. Result has 211 places, 275 transitions, 3707 flow [2024-11-07 19:41:21,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3707, PETRI_PLACES=211, PETRI_TRANSITIONS=275} [2024-11-07 19:41:21,199 INFO L277 CegarLoopForPetriNet]: 61 programPoint places, 150 predicate places. [2024-11-07 19:41:21,199 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 275 transitions, 3707 flow [2024-11-07 19:41:21,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 28.166666666666668) internal successors, (676), 24 states have internal predecessors, (676), 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 19:41:21,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:41:21,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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 19:41:21,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-07 19:41:21,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-07 19:41:21,401 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-11-07 19:41:21,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:41:21,401 INFO L85 PathProgramCache]: Analyzing trace with hash -801424258, now seen corresponding path program 2 times [2024-11-07 19:41:21,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:41:21,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495219420] [2024-11-07 19:41:21,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:41:21,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:41:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:41:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:41:21,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:41:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495219420] [2024-11-07 19:41:21,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495219420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:41:21,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007337003] [2024-11-07 19:41:21,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:41:21,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:41:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:41:21,780 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:41:21,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-07 19:41:21,869 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:41:21,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:41:21,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-07 19:41:21,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:41:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:41:22,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:41:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:41:22,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007337003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:41:22,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:41:22,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2024-11-07 19:41:22,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672114302] [2024-11-07 19:41:22,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:41:22,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-07 19:41:22,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:41:22,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-07 19:41:22,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=654, Unknown=0, NotChecked=0, Total=930 [2024-11-07 19:41:22,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 64 [2024-11-07 19:41:22,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 275 transitions, 3707 flow. Second operand has 31 states, 31 states have (on average 27.741935483870968) internal successors, (860), 31 states have internal predecessors, (860), 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 19:41:22,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:41:22,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 64 [2024-11-07 19:41:22,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:41:31,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:40,720 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification. DAG size of input: 37 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-07 19:41:53,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 19:41:54,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []