./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.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/parallel-parallel-sum-equiv.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', '2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3'] 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/parallel-parallel-sum-equiv.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 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:32:24,850 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:32:24,934 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:32:24,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:32:24,942 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:32:24,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:32:24,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:32:24,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:32:24,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:32:24,972 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:32:24,972 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:32:24,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:32:24,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:32:24,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:32:24,972 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:32:24,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:32:24,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:32:24,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:32:24,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:32:24,974 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:32:24,974 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:32:24,974 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:32:24,975 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:32:24,975 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:32:24,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:32:24,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:32:24,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:32:24,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:32:24,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:32:24,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:32:24,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:32:24,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:32:24,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:32:24,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:32:24,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:32:24,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:32:24,978 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 -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-11-07 19:32:25,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:32:25,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:32:25,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:32:25,336 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:32:25,337 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:32:25,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-07 19:32:26,622 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:32:26,863 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:32:26,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-07 19:32:26,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f24bec608/cceb0fa8a29b4455ab3638c16a1fae44/FLAG5c83c2b22 [2024-11-07 19:32:26,890 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f24bec608/cceb0fa8a29b4455ab3638c16a1fae44 [2024-11-07 19:32:26,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:32:26,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:32:26,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:32:26,897 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:32:26,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:32:26,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:32:26" (1/1) ... [2024-11-07 19:32:26,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f846aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:26, skipping insertion in model container [2024-11-07 19:32:26,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:32:26" (1/1) ... [2024-11-07 19:32:26,924 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:32:27,103 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 19:32:27,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:32:27,122 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:32:27,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:32:27,173 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:32:27,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27 WrapperNode [2024-11-07 19:32:27,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:32:27,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:32:27,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:32:27,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:32:27,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,216 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 253 [2024-11-07 19:32:27,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:32:27,218 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:32:27,218 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:32:27,218 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:32:27,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,228 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,259 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 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 19:32:27,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,268 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,272 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:32:27,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:32:27,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:32:27,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:32:27,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (1/1) ... [2024-11-07 19:32:27,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:32:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:27,309 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 19:32:27,312 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 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:32:27,336 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-07 19:32:27,336 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-07 19:32:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-07 19:32:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-07 19:32:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-07 19:32:27,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-07 19:32:27,337 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-07 19:32:27,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 19:32:27,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:32:27,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:32:27,340 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 19:32:27,461 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:32:27,463 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:32:27,900 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:32:27,900 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:32:28,267 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:32:28,267 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-07 19:32:28,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:32:28 BoogieIcfgContainer [2024-11-07 19:32:28,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:32:28,270 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:32:28,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:32:28,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:32:28,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:32:26" (1/3) ... [2024-11-07 19:32:28,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2004ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:32:28, skipping insertion in model container [2024-11-07 19:32:28,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:32:27" (2/3) ... [2024-11-07 19:32:28,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2004ff4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:32:28, skipping insertion in model container [2024-11-07 19:32:28,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:32:28" (3/3) ... [2024-11-07 19:32:28,278 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-11-07 19:32:28,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:32:28,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-07 19:32:28,292 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:32:28,416 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-11-07 19:32:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 180 flow [2024-11-07 19:32:28,486 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2024-11-07 19:32:28,489 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 19:32:28,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 138 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2024-11-07 19:32:28,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 70 transitions, 180 flow [2024-11-07 19:32:28,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 154 flow [2024-11-07 19:32:28,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:32:28,516 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;@6d22fe58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:32:28,516 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-07 19:32:28,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:32:28,520 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-07 19:32:28,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:32:28,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:28,521 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:32:28,522 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:28,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:28,526 INFO L85 PathProgramCache]: Analyzing trace with hash 795702, now seen corresponding path program 1 times [2024-11-07 19:32:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:28,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742093018] [2024-11-07 19:32:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:28,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:28,800 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 19:32:28,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:28,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742093018] [2024-11-07 19:32:28,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742093018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:28,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:28,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:32:28,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67548402] [2024-11-07 19:32:28,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:28,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:32:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:28,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:32:28,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:32:28,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-11-07 19:32:28,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 19:32:28,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:28,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-11-07 19:32:28,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:30,731 INFO L124 PetriNetUnfolderBase]: 14986/20198 cut-off events. [2024-11-07 19:32:30,731 INFO L125 PetriNetUnfolderBase]: For 974/974 co-relation queries the response was YES. [2024-11-07 19:32:30,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41822 conditions, 20198 events. 14986/20198 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 103935 event pairs, 13324 based on Foata normal form. 1/15693 useless extension candidates. Maximal degree in co-relation 41747. Up to 20169 conditions per place. [2024-11-07 19:32:30,924 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 49 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-11-07 19:32:30,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 244 flow [2024-11-07 19:32:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:32:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:32:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-11-07 19:32:30,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2024-11-07 19:32:30,937 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 154 flow. Second operand 3 states and 86 transitions. [2024-11-07 19:32:30,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 244 flow [2024-11-07 19:32:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-07 19:32:30,968 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 126 flow [2024-11-07 19:32:30,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-11-07 19:32:30,974 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-11-07 19:32:30,975 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 126 flow [2024-11-07 19:32:30,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 19:32:30,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:30,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-07 19:32:30,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:32:30,976 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:30,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:30,976 INFO L85 PathProgramCache]: Analyzing trace with hash 795703, now seen corresponding path program 1 times [2024-11-07 19:32:30,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:30,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482502695] [2024-11-07 19:32:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:30,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:31,293 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 19:32:31,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:31,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482502695] [2024-11-07 19:32:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482502695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:31,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:32:31,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177049570] [2024-11-07 19:32:31,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:31,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:31,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:31,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:31,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-11-07 19:32:31,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:32:31,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:31,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-11-07 19:32:31,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:32,812 INFO L124 PetriNetUnfolderBase]: 14987/20201 cut-off events. [2024-11-07 19:32:32,813 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-07 19:32:32,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40858 conditions, 20201 events. 14987/20201 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 103919 event pairs, 13324 based on Foata normal form. 0/15695 useless extension candidates. Maximal degree in co-relation 40836. Up to 20174 conditions per place. [2024-11-07 19:32:32,914 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 51 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-07 19:32:32,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 244 flow [2024-11-07 19:32:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-07 19:32:32,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-07 19:32:32,918 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 126 flow. Second operand 4 states and 96 transitions. [2024-11-07 19:32:32,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 244 flow [2024-11-07 19:32:32,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:32:32,921 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 149 flow [2024-11-07 19:32:32,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-11-07 19:32:32,922 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-07 19:32:32,922 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 149 flow [2024-11-07 19:32:32,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:32:32,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:32,923 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-07 19:32:32,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:32:32,923 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:32,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:32,925 INFO L85 PathProgramCache]: Analyzing trace with hash 764695564, now seen corresponding path program 1 times [2024-11-07 19:32:32,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:32,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443863106] [2024-11-07 19:32:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:33,270 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 19:32:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443863106] [2024-11-07 19:32:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443863106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732074579] [2024-11-07 19:32:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:33,274 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 19:32:33,276 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 19:32:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:33,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-07 19:32:33,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:33,431 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 19:32:33,646 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 19:32:33,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:33,754 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 19:32:33,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732074579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:33,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:33,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:32:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643353829] [2024-11-07 19:32:33,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:33,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:32:33,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:32:33,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:32:33,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-11-07 19:32:33,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 149 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 19:32:33,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:33,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-11-07 19:32:33,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:35,252 INFO L124 PetriNetUnfolderBase]: 14988/20203 cut-off events. [2024-11-07 19:32:35,252 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-07 19:32:35,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40874 conditions, 20203 events. 14988/20203 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 103898 event pairs, 13324 based on Foata normal form. 0/15696 useless extension candidates. Maximal degree in co-relation 40843. Up to 20171 conditions per place. [2024-11-07 19:32:35,384 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 47 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2024-11-07 19:32:35,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 271 flow [2024-11-07 19:32:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:32:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:32:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-11-07 19:32:35,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24131944444444445 [2024-11-07 19:32:35,387 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 149 flow. Second operand 8 states and 139 transitions. [2024-11-07 19:32:35,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 271 flow [2024-11-07 19:32:35,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:32:35,389 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 174 flow [2024-11-07 19:32:35,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-07 19:32:35,392 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-11-07 19:32:35,392 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 174 flow [2024-11-07 19:32:35,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 19:32:35,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:35,392 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:35,412 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 19:32:35,596 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 19:32:35,597 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:35,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 131630980, now seen corresponding path program 1 times [2024-11-07 19:32:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:35,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288204712] [2024-11-07 19:32:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:35,727 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 19:32:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288204712] [2024-11-07 19:32:35,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288204712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:35,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:32:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393087697] [2024-11-07 19:32:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:35,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:32:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:32:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:32:35,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-11-07 19:32:35,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 19:32:35,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:35,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-11-07 19:32:35,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:36,748 INFO L124 PetriNetUnfolderBase]: 11188/15110 cut-off events. [2024-11-07 19:32:36,748 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-07 19:32:36,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30613 conditions, 15110 events. 11188/15110 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 74399 event pairs, 9814 based on Foata normal form. 0/12560 useless extension candidates. Maximal degree in co-relation 30575. Up to 15077 conditions per place. [2024-11-07 19:32:36,810 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 50 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-07 19:32:36,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 276 flow [2024-11-07 19:32:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:32:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:32:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-07 19:32:36,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3159722222222222 [2024-11-07 19:32:36,812 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 174 flow. Second operand 4 states and 91 transitions. [2024-11-07 19:32:36,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 276 flow [2024-11-07 19:32:36,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 234 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-07 19:32:36,814 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 134 flow [2024-11-07 19:32:36,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2024-11-07 19:32:36,816 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2024-11-07 19:32:36,816 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 134 flow [2024-11-07 19:32:36,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 19:32:36,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:36,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:36,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:32:36,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:36,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:36,817 INFO L85 PathProgramCache]: Analyzing trace with hash 131630981, now seen corresponding path program 1 times [2024-11-07 19:32:36,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:36,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896217130] [2024-11-07 19:32:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:36,918 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 19:32:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:36,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896217130] [2024-11-07 19:32:36,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896217130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:36,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:36,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:32:36,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373062629] [2024-11-07 19:32:36,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:36,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:36,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:36,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:32:36,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:36,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:36,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:36,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:36,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:38,080 INFO L124 PetriNetUnfolderBase]: 19694/26750 cut-off events. [2024-11-07 19:32:38,080 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-11-07 19:32:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 26750 events. 19694/26750 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 147011 event pairs, 11285 based on Foata normal form. 391/22816 useless extension candidates. Maximal degree in co-relation 30487. Up to 15038 conditions per place. [2024-11-07 19:32:38,225 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 121 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2024-11-07 19:32:38,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 129 transitions, 543 flow [2024-11-07 19:32:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:38,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-11-07 19:32:38,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49722222222222223 [2024-11-07 19:32:38,227 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 134 flow. Second operand 5 states and 179 transitions. [2024-11-07 19:32:38,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 129 transitions, 543 flow [2024-11-07 19:32:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 129 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:32:38,233 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 148 flow [2024-11-07 19:32:38,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-07 19:32:38,236 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2024-11-07 19:32:38,237 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 148 flow [2024-11-07 19:32:38,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:38,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:38,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:38,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:32:38,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:38,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1110882817, now seen corresponding path program 1 times [2024-11-07 19:32:38,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:38,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352466968] [2024-11-07 19:32:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:38,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:38,346 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 19:32:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352466968] [2024-11-07 19:32:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352466968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:32:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:32:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358726654] [2024-11-07 19:32:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:38,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:38,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:32:38,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:38,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:38,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:38,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:38,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:39,100 INFO L124 PetriNetUnfolderBase]: 14906/20425 cut-off events. [2024-11-07 19:32:39,101 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2024-11-07 19:32:39,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42939 conditions, 20425 events. 14906/20425 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 108446 event pairs, 11441 based on Foata normal form. 432/17570 useless extension candidates. Maximal degree in co-relation 31748. Up to 15082 conditions per place. [2024-11-07 19:32:39,200 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 90 selfloop transitions, 4 changer transitions 4/102 dead transitions. [2024-11-07 19:32:39,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 445 flow [2024-11-07 19:32:39,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-11-07 19:32:39,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-11-07 19:32:39,201 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 148 flow. Second operand 5 states and 154 transitions. [2024-11-07 19:32:39,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 445 flow [2024-11-07 19:32:39,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 440 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:32:39,206 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 166 flow [2024-11-07 19:32:39,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-07 19:32:39,207 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2024-11-07 19:32:39,207 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 166 flow [2024-11-07 19:32:39,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:39,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:39,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 19:32:39,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:39,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash -689451504, now seen corresponding path program 1 times [2024-11-07 19:32:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814344049] [2024-11-07 19:32:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:39,327 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 19:32:39,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:39,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814344049] [2024-11-07 19:32:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814344049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418849768] [2024-11-07 19:32:39,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:39,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:39,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:39,330 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 19:32:39,332 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 19:32:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:39,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:32:39,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:39,482 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 19:32:39,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:39,541 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 19:32:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418849768] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:39,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:39,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 19:32:39,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791828430] [2024-11-07 19:32:39,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:39,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:32:39,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:39,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:32:39,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:32:39,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:39,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 166 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 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 19:32:39,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:39,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:39,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:41,349 INFO L124 PetriNetUnfolderBase]: 23412/32029 cut-off events. [2024-11-07 19:32:41,349 INFO L125 PetriNetUnfolderBase]: For 3097/3097 co-relation queries the response was YES. [2024-11-07 19:32:41,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69768 conditions, 32029 events. 23412/32029 cut-off events. For 3097/3097 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 184147 event pairs, 9882 based on Foata normal form. 391/27350 useless extension candidates. Maximal degree in co-relation 58577. Up to 13384 conditions per place. [2024-11-07 19:32:41,565 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 148 selfloop transitions, 10 changer transitions 0/162 dead transitions. [2024-11-07 19:32:41,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 162 transitions, 746 flow [2024-11-07 19:32:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:32:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:32:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-11-07 19:32:41,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4253472222222222 [2024-11-07 19:32:41,566 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 166 flow. Second operand 8 states and 245 transitions. [2024-11-07 19:32:41,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 162 transitions, 746 flow [2024-11-07 19:32:41,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 162 transitions, 741 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:32:41,577 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 206 flow [2024-11-07 19:32:41,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-11-07 19:32:41,578 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-11-07 19:32:41,578 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 206 flow [2024-11-07 19:32:41,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 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 19:32:41,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:41,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:41,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 19:32:41,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:41,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:41,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:41,780 INFO L85 PathProgramCache]: Analyzing trace with hash -794636076, now seen corresponding path program 1 times [2024-11-07 19:32:41,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:41,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186527614] [2024-11-07 19:32:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:41,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:41,902 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 19:32:41,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186527614] [2024-11-07 19:32:41,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186527614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:41,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604898302] [2024-11-07 19:32:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:41,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:41,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:41,906 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 19:32:41,908 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 19:32:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:41,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:32:41,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:42,048 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 19:32:42,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:42,101 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 19:32:42,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604898302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:42,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:42,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-07 19:32:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727118964] [2024-11-07 19:32:42,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:42,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-07 19:32:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-07 19:32:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:32:42,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:42,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 206 flow. Second operand has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 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 19:32:42,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:42,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:42,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:43,527 INFO L124 PetriNetUnfolderBase]: 18228/25344 cut-off events. [2024-11-07 19:32:43,527 INFO L125 PetriNetUnfolderBase]: For 6833/6833 co-relation queries the response was YES. [2024-11-07 19:32:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57483 conditions, 25344 events. 18228/25344 cut-off events. For 6833/6833 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 142273 event pairs, 9011 based on Foata normal form. 612/22104 useless extension candidates. Maximal degree in co-relation 39430. Up to 10410 conditions per place. [2024-11-07 19:32:43,676 INFO L140 encePairwiseOnDemand]: 61/72 looper letters, 111 selfloop transitions, 11 changer transitions 4/130 dead transitions. [2024-11-07 19:32:43,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 640 flow [2024-11-07 19:32:43,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-07 19:32:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-07 19:32:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-11-07 19:32:43,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-11-07 19:32:43,678 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 206 flow. Second operand 8 states and 219 transitions. [2024-11-07 19:32:43,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 640 flow [2024-11-07 19:32:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 618 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-07 19:32:43,690 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 257 flow [2024-11-07 19:32:43,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=257, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-11-07 19:32:43,693 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-07 19:32:43,693 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 257 flow [2024-11-07 19:32:43,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.666666666666666) internal successors, (164), 12 states have internal predecessors, (164), 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 19:32:43,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:43,694 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:43,711 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 19:32:43,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:43,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:43,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:43,895 INFO L85 PathProgramCache]: Analyzing trace with hash 524262875, now seen corresponding path program 2 times [2024-11-07 19:32:43,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:43,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238121738] [2024-11-07 19:32:43,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:43,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:44,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238121738] [2024-11-07 19:32:44,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238121738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825883916] [2024-11-07 19:32:44,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:32:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:44,104 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 19:32:44,105 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 19:32:44,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 19:32:44,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:44,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-07 19:32:44,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:44,208 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 12 treesize of output 11 [2024-11-07 19:32:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:32:44,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:32:44,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825883916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:44,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:32:44,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-11-07 19:32:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823672326] [2024-11-07 19:32:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:44,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:44,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:44,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:32:44,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:44,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 257 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 19:32:44,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:44,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:44,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:45,706 INFO L124 PetriNetUnfolderBase]: 24944/34337 cut-off events. [2024-11-07 19:32:45,706 INFO L125 PetriNetUnfolderBase]: For 12294/12294 co-relation queries the response was YES. [2024-11-07 19:32:45,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83451 conditions, 34337 events. 24944/34337 cut-off events. For 12294/12294 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 197248 event pairs, 10774 based on Foata normal form. 0/29146 useless extension candidates. Maximal degree in co-relation 61669. Up to 17334 conditions per place. [2024-11-07 19:32:45,917 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 95 selfloop transitions, 8 changer transitions 0/107 dead transitions. [2024-11-07 19:32:45,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 107 transitions, 614 flow [2024-11-07 19:32:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-11-07 19:32:45,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-11-07 19:32:45,918 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 257 flow. Second operand 5 states and 142 transitions. [2024-11-07 19:32:45,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 107 transitions, 614 flow [2024-11-07 19:32:45,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 584 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-11-07 19:32:45,936 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 266 flow [2024-11-07 19:32:45,936 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-11-07 19:32:45,937 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-07 19:32:45,937 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 266 flow [2024-11-07 19:32:45,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 19:32:45,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:45,937 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:45,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 19:32:46,141 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,SelfDestructingSolverStorable8 [2024-11-07 19:32:46,142 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:46,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1824195991, now seen corresponding path program 2 times [2024-11-07 19:32:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303847681] [2024-11-07 19:32:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:46,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:46,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303847681] [2024-11-07 19:32:46,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303847681] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:46,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882615090] [2024-11-07 19:32:46,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:32:46,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:46,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:46,317 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 19:32:46,319 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 19:32:46,392 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 19:32:46,392 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:46,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-07 19:32:46,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:46,417 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 8 treesize of output 1 [2024-11-07 19:32:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:32:46,626 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:32:46,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882615090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:46,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:32:46,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2024-11-07 19:32:46,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28220746] [2024-11-07 19:32:46,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:46,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-07 19:32:46,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:46,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:46,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:46,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:46,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:47,802 INFO L124 PetriNetUnfolderBase]: 21460/29740 cut-off events. [2024-11-07 19:32:47,802 INFO L125 PetriNetUnfolderBase]: For 13861/13861 co-relation queries the response was YES. [2024-11-07 19:32:47,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70964 conditions, 29740 events. 21460/29740 cut-off events. For 13861/13861 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 166511 event pairs, 8497 based on Foata normal form. 0/25887 useless extension candidates. Maximal degree in co-relation 48723. Up to 29283 conditions per place. [2024-11-07 19:32:47,959 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 69 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-07 19:32:47,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 481 flow [2024-11-07 19:32:47,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-11-07 19:32:47,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3194444444444444 [2024-11-07 19:32:47,961 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 266 flow. Second operand 5 states and 115 transitions. [2024-11-07 19:32:47,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 481 flow [2024-11-07 19:32:47,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 457 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-07 19:32:47,970 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 252 flow [2024-11-07 19:32:47,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-11-07 19:32:47,971 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places. [2024-11-07 19:32:47,971 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 252 flow [2024-11-07 19:32:47,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:32:47,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:47,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:47,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 19:32:48,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-07 19:32:48,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:48,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash 433292599, now seen corresponding path program 1 times [2024-11-07 19:32:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284780721] [2024-11-07 19:32:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:48,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284780721] [2024-11-07 19:32:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284780721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:48,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960971364] [2024-11-07 19:32:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:48,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:48,304 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 19:32:48,306 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 19:32:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:48,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:32:48,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:48,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:48,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960971364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:48,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-07 19:32:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195323875] [2024-11-07 19:32:48,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:48,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-07 19:32:48,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:48,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-07 19:32:48,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-07 19:32:48,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:48,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 252 flow. Second operand has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 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 19:32:48,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:48,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:48,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:50,919 INFO L124 PetriNetUnfolderBase]: 34772/47747 cut-off events. [2024-11-07 19:32:50,920 INFO L125 PetriNetUnfolderBase]: For 17942/17942 co-relation queries the response was YES. [2024-11-07 19:32:51,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112667 conditions, 47747 events. 34772/47747 cut-off events. For 17942/17942 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 283351 event pairs, 11651 based on Foata normal form. 317/42277 useless extension candidates. Maximal degree in co-relation 90469. Up to 14395 conditions per place. [2024-11-07 19:32:51,156 INFO L140 encePairwiseOnDemand]: 64/72 looper letters, 220 selfloop transitions, 16 changer transitions 1/241 dead transitions. [2024-11-07 19:32:51,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 241 transitions, 1298 flow [2024-11-07 19:32:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-07 19:32:51,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-07 19:32:51,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 338 transitions. [2024-11-07 19:32:51,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-11-07 19:32:51,158 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 252 flow. Second operand 11 states and 338 transitions. [2024-11-07 19:32:51,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 241 transitions, 1298 flow [2024-11-07 19:32:51,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 241 transitions, 1276 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:32:51,177 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 345 flow [2024-11-07 19:32:51,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=345, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2024-11-07 19:32:51,178 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-07 19:32:51,178 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 345 flow [2024-11-07 19:32:51,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.411764705882353) internal successors, (228), 17 states have internal predecessors, (228), 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 19:32:51,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:51,178 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:51,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:32:51,379 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,SelfDestructingSolverStorable10 [2024-11-07 19:32:51,379 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:51,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1587212094, now seen corresponding path program 2 times [2024-11-07 19:32:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:51,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511251245] [2024-11-07 19:32:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:51,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:51,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:51,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511251245] [2024-11-07 19:32:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511251245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:51,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927803827] [2024-11-07 19:32:51,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 19:32:51,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:51,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:51,659 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 19:32:51,661 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 19:32:51,752 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-07 19:32:51,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:51,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-07 19:32:51,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:51,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:32:52,010 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 24 treesize of output 20 [2024-11-07 19:32:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:52,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927803827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:32:52,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:32:52,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-07 19:32:52,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074030243] [2024-11-07 19:32:52,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:32:52,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-07 19:32:52,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-07 19:32:52,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-07 19:32:52,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:52,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 345 flow. Second operand has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 21 states have internal predecessors, (282), 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 19:32:52,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:52,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:52,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:54,689 INFO L124 PetriNetUnfolderBase]: 41083/56300 cut-off events. [2024-11-07 19:32:54,689 INFO L125 PetriNetUnfolderBase]: For 33538/33538 co-relation queries the response was YES. [2024-11-07 19:32:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139641 conditions, 56300 events. 41083/56300 cut-off events. For 33538/33538 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 329613 event pairs, 26350 based on Foata normal form. 0/49556 useless extension candidates. Maximal degree in co-relation 115875. Up to 28255 conditions per place. [2024-11-07 19:32:55,868 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 172 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2024-11-07 19:32:55,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 187 transitions, 1054 flow [2024-11-07 19:32:55,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-07 19:32:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-07 19:32:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 269 transitions. [2024-11-07 19:32:55,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41512345679012347 [2024-11-07 19:32:55,870 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 345 flow. Second operand 9 states and 269 transitions. [2024-11-07 19:32:55,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 187 transitions, 1054 flow [2024-11-07 19:32:55,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 187 transitions, 1046 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:32:55,915 INFO L231 Difference]: Finished difference. Result has 100 places, 72 transitions, 371 flow [2024-11-07 19:32:55,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=371, PETRI_PLACES=100, PETRI_TRANSITIONS=72} [2024-11-07 19:32:55,916 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places. [2024-11-07 19:32:55,916 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 72 transitions, 371 flow [2024-11-07 19:32:55,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 13.428571428571429) internal successors, (282), 21 states have internal predecessors, (282), 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 19:32:55,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:32:55,916 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:32:55,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-07 19:32:56,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:56,118 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:32:56,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:32:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1420242078, now seen corresponding path program 3 times [2024-11-07 19:32:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:32:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553850153] [2024-11-07 19:32:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:32:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:32:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:32:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:32:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:32:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553850153] [2024-11-07 19:32:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553850153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:32:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804476466] [2024-11-07 19:32:56,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-07 19:32:56,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:32:56,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:32:56,329 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 19:32:56,330 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 19:32:56,426 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-07 19:32:56,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 19:32:56,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 19:32:56,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:32:56,444 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 12 treesize of output 11 [2024-11-07 19:32:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-07 19:32:56,774 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 19:32:56,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804476466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:32:56,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 19:32:56,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 11 [2024-11-07 19:32:56,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785920166] [2024-11-07 19:32:56,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:32:56,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:32:56,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:32:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:32:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:32:56,783 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:32:56,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 72 transitions, 371 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:32:56,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:32:56,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:32:56,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:32:59,518 INFO L124 PetriNetUnfolderBase]: 40287/55166 cut-off events. [2024-11-07 19:32:59,518 INFO L125 PetriNetUnfolderBase]: For 35574/35574 co-relation queries the response was YES. [2024-11-07 19:32:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137866 conditions, 55166 events. 40287/55166 cut-off events. For 35574/35574 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 332658 event pairs, 3776 based on Foata normal form. 0/48833 useless extension candidates. Maximal degree in co-relation 114117. Up to 49039 conditions per place. [2024-11-07 19:32:59,892 INFO L140 encePairwiseOnDemand]: 68/72 looper letters, 90 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-11-07 19:32:59,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 670 flow [2024-11-07 19:32:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:32:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:32:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-07 19:32:59,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-11-07 19:32:59,893 INFO L175 Difference]: Start difference. First operand has 100 places, 72 transitions, 371 flow. Second operand 5 states and 129 transitions. [2024-11-07 19:32:59,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 670 flow [2024-11-07 19:33:00,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 624 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-07 19:33:00,147 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 335 flow [2024-11-07 19:33:00,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2024-11-07 19:33:00,148 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2024-11-07 19:33:00,148 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 335 flow [2024-11-07 19:33:00,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:33:00,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:33:00,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:33:00,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-07 19:33:00,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:33:00,349 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:33:00,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:33:00,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1160815544, now seen corresponding path program 1 times [2024-11-07 19:33:00,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:33:00,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283702472] [2024-11-07 19:33:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:33:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:33:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:33:00,400 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 19:33:00,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:33:00,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283702472] [2024-11-07 19:33:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283702472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:33:00,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:33:00,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:33:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341647276] [2024-11-07 19:33:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:33:00,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:33:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:33:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:33:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:33:00,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:33:00,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:00,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:33:00,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:33:00,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:33:06,497 INFO L124 PetriNetUnfolderBase]: 80324/109934 cut-off events. [2024-11-07 19:33:06,497 INFO L125 PetriNetUnfolderBase]: For 54144/54144 co-relation queries the response was YES. [2024-11-07 19:33:06,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266948 conditions, 109934 events. 80324/109934 cut-off events. For 54144/54144 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 699563 event pairs, 28351 based on Foata normal form. 4/96668 useless extension candidates. Maximal degree in co-relation 226667. Up to 46427 conditions per place. [2024-11-07 19:33:07,223 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 139 selfloop transitions, 10 changer transitions 4/157 dead transitions. [2024-11-07 19:33:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 157 transitions, 968 flow [2024-11-07 19:33:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:33:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:33:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-11-07 19:33:07,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-07 19:33:07,225 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 335 flow. Second operand 4 states and 160 transitions. [2024-11-07 19:33:07,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 157 transitions, 968 flow [2024-11-07 19:33:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 157 transitions, 950 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:33:07,412 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 394 flow [2024-11-07 19:33:07,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2024-11-07 19:33:07,412 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 31 predicate places. [2024-11-07 19:33:07,412 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 394 flow [2024-11-07 19:33:07,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:07,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:33:07,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:33:07,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:33:07,413 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:33:07,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:33:07,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1791241923, now seen corresponding path program 1 times [2024-11-07 19:33:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:33:07,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530946309] [2024-11-07 19:33:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:33:07,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:33:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:33:07,467 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 19:33:07,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:33:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530946309] [2024-11-07 19:33:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530946309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:33:07,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:33:07,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 19:33:07,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977683019] [2024-11-07 19:33:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:33:07,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:33:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:33:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:33:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:33:07,469 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:33:07,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:33:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:33:07,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:33:13,066 INFO L124 PetriNetUnfolderBase]: 74384/101615 cut-off events. [2024-11-07 19:33:13,066 INFO L125 PetriNetUnfolderBase]: For 53116/53116 co-relation queries the response was YES. [2024-11-07 19:33:13,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260039 conditions, 101615 events. 74384/101615 cut-off events. For 53116/53116 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 634710 event pairs, 37407 based on Foata normal form. 4/89629 useless extension candidates. Maximal degree in co-relation 239797. Up to 50713 conditions per place. [2024-11-07 19:33:13,697 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 132 selfloop transitions, 10 changer transitions 11/157 dead transitions. [2024-11-07 19:33:13,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 157 transitions, 988 flow [2024-11-07 19:33:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:33:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:33:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-11-07 19:33:13,698 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2024-11-07 19:33:13,698 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 394 flow. Second operand 4 states and 161 transitions. [2024-11-07 19:33:13,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 157 transitions, 988 flow [2024-11-07 19:33:14,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 157 transitions, 988 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:33:14,123 INFO L231 Difference]: Finished difference. Result has 102 places, 76 transitions, 383 flow [2024-11-07 19:33:14,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=383, PETRI_PLACES=102, PETRI_TRANSITIONS=76} [2024-11-07 19:33:14,124 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 36 predicate places. [2024-11-07 19:33:14,124 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 76 transitions, 383 flow [2024-11-07 19:33:14,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:14,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:33:14,124 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:33:14,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:33:14,124 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:33:14,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:33:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2022125443, now seen corresponding path program 1 times [2024-11-07 19:33:14,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:33:14,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978667452] [2024-11-07 19:33:14,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:33:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:33:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:33:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:33:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:33:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978667452] [2024-11-07 19:33:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978667452] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:33:14,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600867531] [2024-11-07 19:33:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:33:14,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:33:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:33:14,236 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 19:33:14,238 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 19:33:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:33:14,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:33:14,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:33:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:33:14,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:33:14,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 19:33:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600867531] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 19:33:14,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 19:33:14,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-07 19:33:14,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001773167] [2024-11-07 19:33:14,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:33:14,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 19:33:14,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:33:14,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 19:33:14,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-07 19:33:14,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:33:14,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 76 transitions, 383 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:14,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:33:14,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:33:14,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:33:19,223 INFO L124 PetriNetUnfolderBase]: 58176/79000 cut-off events. [2024-11-07 19:33:19,223 INFO L125 PetriNetUnfolderBase]: For 69971/69971 co-relation queries the response was YES. [2024-11-07 19:33:19,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210712 conditions, 79000 events. 58176/79000 cut-off events. For 69971/69971 co-relation queries the response was YES. Maximal size of possible extension queue 1723. Compared 476150 event pairs, 37175 based on Foata normal form. 1598/71058 useless extension candidates. Maximal degree in co-relation 210691. Up to 54683 conditions per place. [2024-11-07 19:33:19,837 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 98 selfloop transitions, 9 changer transitions 1/112 dead transitions. [2024-11-07 19:33:19,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 112 transitions, 727 flow [2024-11-07 19:33:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:33:19,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:33:19,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-07 19:33:19,838 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-11-07 19:33:19,838 INFO L175 Difference]: Start difference. First operand has 102 places, 76 transitions, 383 flow. Second operand 6 states and 147 transitions. [2024-11-07 19:33:19,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 112 transitions, 727 flow [2024-11-07 19:33:20,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 112 transitions, 685 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-07 19:33:20,608 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 366 flow [2024-11-07 19:33:20,608 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2024-11-07 19:33:20,609 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 27 predicate places. [2024-11-07 19:33:20,609 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 366 flow [2024-11-07 19:33:20,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:33:20,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:33:20,609 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:33:20,622 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 19:33:20,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:33:20,810 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-07 19:33:20,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:33:20,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1221049029, now seen corresponding path program 1 times [2024-11-07 19:33:20,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:33:20,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188397670] [2024-11-07 19:33:20,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:33:20,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:33:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:33:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 19:33:20,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:33:20,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188397670] [2024-11-07 19:33:20,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188397670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:33:20,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:33:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 19:33:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968698567] [2024-11-07 19:33:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:33:20,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 19:33:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:33:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 19:33:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-07 19:33:20,909 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-11-07 19:33:20,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 19:33:20,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:33:20,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-11-07 19:33:20,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:33:25,615 INFO L124 PetriNetUnfolderBase]: 63090/85768 cut-off events. [2024-11-07 19:33:25,615 INFO L125 PetriNetUnfolderBase]: For 73876/73876 co-relation queries the response was YES. [2024-11-07 19:33:25,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225099 conditions, 85768 events. 63090/85768 cut-off events. For 73876/73876 co-relation queries the response was YES. Maximal size of possible extension queue 1955. Compared 528894 event pairs, 9100 based on Foata normal form. 756/75988 useless extension candidates. Maximal degree in co-relation 225081. Up to 48509 conditions per place. [2024-11-07 19:33:26,165 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 153 selfloop transitions, 10 changer transitions 1/168 dead transitions. [2024-11-07 19:33:26,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1009 flow [2024-11-07 19:33:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:33:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:33:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-11-07 19:33:26,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-11-07 19:33:26,166 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 366 flow. Second operand 5 states and 183 transitions. [2024-11-07 19:33:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1009 flow