./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G valid-free) )\nCHECK( init(main()), LTL(G valid-deref) )\nCHECK( init(main()), LTL(G valid-memtrack) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f'] 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/goblint-regression/28-race_reach_71-funloop_racing.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:25:58,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:25:58,138 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:25:58,146 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:25:58,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:25:58,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:25:58,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:25:58,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:25:58,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:25:58,173 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:25:58,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:25:58,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:25:58,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:25:58,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:25:58,173 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:25:58,174 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:25:58,174 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:25:58,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:25:58,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:25:58,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:25:58,174 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:25:58,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:25:58,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:25:58,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:25:58,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:25:58,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:25:58,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:25:58,178 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 -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-07 19:25:58,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:25:58,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:25:58,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:25:58,433 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:25:58,433 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:25:58,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-07 19:25:59,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:25:59,939 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:25:59,940 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-07 19:25:59,951 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7531864c3/08b22e6676fd455388e7c3f67dee6825/FLAG2176abb4a [2024-11-07 19:25:59,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7531864c3/08b22e6676fd455388e7c3f67dee6825 [2024-11-07 19:25:59,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:25:59,964 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:25:59,965 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:25:59,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:25:59,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:25:59,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:59" (1/1) ... [2024-11-07 19:25:59,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342de1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:25:59, skipping insertion in model container [2024-11-07 19:25:59,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:25:59" (1/1) ... [2024-11-07 19:25:59,990 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:26:00,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:26:00,322 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:26:00,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:26:00,426 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:26:00,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00 WrapperNode [2024-11-07 19:26:00,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:26:00,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:26:00,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:26:00,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:26:00,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,453 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,485 INFO L138 Inliner]: procedures = 272, calls = 108, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 344 [2024-11-07 19:26:00,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:26:00,488 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:26:00,488 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:26:00,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:26:00,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,501 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,516 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-07 19:26:00,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,541 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,544 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,546 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:26:00,547 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:26:00,547 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:26:00,547 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:26:00,548 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (1/1) ... [2024-11-07 19:26:00,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:26:00,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:00,581 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 19:26:00,584 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 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 19:26:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-07 19:26:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 19:26:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:26:00,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:26:00,608 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 19:26:00,724 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:26:00,726 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:26:01,222 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:26:01,222 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:26:01,603 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:26:01,604 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-07 19:26:01,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:01 BoogieIcfgContainer [2024-11-07 19:26:01,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:26:01,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:26:01,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:26:01,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:26:01,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:25:59" (1/3) ... [2024-11-07 19:26:01,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a4cb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:01, skipping insertion in model container [2024-11-07 19:26:01,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:26:00" (2/3) ... [2024-11-07 19:26:01,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a4cb61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:26:01, skipping insertion in model container [2024-11-07 19:26:01,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:26:01" (3/3) ... [2024-11-07 19:26:01,615 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-07 19:26:01,625 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:26:01,626 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-07 19:26:01,626 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:26:01,668 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 19:26:01,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 196 transitions, 399 flow [2024-11-07 19:26:01,826 INFO L124 PetriNetUnfolderBase]: 70/323 cut-off events. [2024-11-07 19:26:01,831 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:26:01,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 323 events. 70/323 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1886 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2024-11-07 19:26:01,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 196 transitions, 399 flow [2024-11-07 19:26:01,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 196 transitions, 399 flow [2024-11-07 19:26:01,858 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:26:01,872 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;@3872c370, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:26:01,874 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-07 19:26:01,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:26:01,882 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-07 19:26:01,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:26:01,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:01,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:26:01,883 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:01,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:01,886 INFO L85 PathProgramCache]: Analyzing trace with hash 27455186, now seen corresponding path program 1 times [2024-11-07 19:26:01,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:01,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124511091] [2024-11-07 19:26:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:02,101 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 19:26:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124511091] [2024-11-07 19:26:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124511091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:02,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059170663] [2024-11-07 19:26:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:02,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:02,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-07 19:26:02,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 196 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 19:26:02,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:02,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-07 19:26:02,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:02,635 INFO L124 PetriNetUnfolderBase]: 1016/3457 cut-off events. [2024-11-07 19:26:02,636 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 19:26:02,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5382 conditions, 3457 events. 1016/3457 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30765 event pairs, 861 based on Foata normal form. 708/3646 useless extension candidates. Maximal degree in co-relation 5218. Up to 1919 conditions per place. [2024-11-07 19:26:02,655 INFO L140 encePairwiseOnDemand]: 157/196 looper letters, 69 selfloop transitions, 2 changer transitions 0/158 dead transitions. [2024-11-07 19:26:02,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 158 transitions, 465 flow [2024-11-07 19:26:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:02,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2024-11-07 19:26:02,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6275510204081632 [2024-11-07 19:26:02,676 INFO L175 Difference]: Start difference. First operand has 156 places, 196 transitions, 399 flow. Second operand 3 states and 369 transitions. [2024-11-07 19:26:02,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 158 transitions, 465 flow [2024-11-07 19:26:02,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 158 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:26:02,695 INFO L231 Difference]: Finished difference. Result has 156 places, 158 transitions, 333 flow [2024-11-07 19:26:02,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=156, PETRI_TRANSITIONS=158} [2024-11-07 19:26:02,700 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2024-11-07 19:26:02,700 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 333 flow [2024-11-07 19:26:02,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 19:26:02,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:02,701 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:26:02,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:26:02,704 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:02,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 851116754, now seen corresponding path program 1 times [2024-11-07 19:26:02,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:02,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869090958] [2024-11-07 19:26:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:02,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:02,892 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 19:26:02,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:02,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869090958] [2024-11-07 19:26:02,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869090958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:02,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472762487] [2024-11-07 19:26:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:02,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:02,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:02,894 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 19:26:02,896 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 19:26:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:02,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:26:02,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:03,005 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 19:26:03,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:03,016 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 19:26:03,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472762487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:03,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:03,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560453226] [2024-11-07 19:26:03,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:03,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:03,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-07 19:26:03,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 158 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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 19:26:03,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:03,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-07 19:26:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:03,362 INFO L124 PetriNetUnfolderBase]: 1016/3460 cut-off events. [2024-11-07 19:26:03,362 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-07 19:26:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 3460 events. 1016/3460 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 30764 event pairs, 861 based on Foata normal form. 0/2941 useless extension candidates. Maximal degree in co-relation 5386. Up to 1919 conditions per place. [2024-11-07 19:26:03,374 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 69 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2024-11-07 19:26:03,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 161 transitions, 493 flow [2024-11-07 19:26:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:26:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:26:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 599 transitions. [2024-11-07 19:26:03,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5093537414965986 [2024-11-07 19:26:03,377 INFO L175 Difference]: Start difference. First operand has 156 places, 158 transitions, 333 flow. Second operand 6 states and 599 transitions. [2024-11-07 19:26:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 161 transitions, 493 flow [2024-11-07 19:26:03,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 489 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:03,384 INFO L231 Difference]: Finished difference. Result has 163 places, 161 transitions, 365 flow [2024-11-07 19:26:03,384 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=365, PETRI_PLACES=163, PETRI_TRANSITIONS=161} [2024-11-07 19:26:03,385 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 7 predicate places. [2024-11-07 19:26:03,385 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 161 transitions, 365 flow [2024-11-07 19:26:03,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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 19:26:03,386 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:03,386 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:03,399 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 19:26:03,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:03,591 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1861751086, now seen corresponding path program 2 times [2024-11-07 19:26:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:03,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905512730] [2024-11-07 19:26:03,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:03,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 19:26:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905512730] [2024-11-07 19:26:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905512730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:03,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:03,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656460961] [2024-11-07 19:26:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:03,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:03,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:03,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196 [2024-11-07 19:26:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 161 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 19:26:03,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:03,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196 [2024-11-07 19:26:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:03,971 INFO L124 PetriNetUnfolderBase]: 1069/3541 cut-off events. [2024-11-07 19:26:03,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-07 19:26:03,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5590 conditions, 3541 events. 1069/3541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31432 event pairs, 861 based on Foata normal form. 0/3059 useless extension candidates. Maximal degree in co-relation 5556. Up to 1915 conditions per place. [2024-11-07 19:26:04,019 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 96 selfloop transitions, 2 changer transitions 0/181 dead transitions. [2024-11-07 19:26:04,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 181 transitions, 601 flow [2024-11-07 19:26:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-11-07 19:26:04,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2024-11-07 19:26:04,021 INFO L175 Difference]: Start difference. First operand has 163 places, 161 transitions, 365 flow. Second operand 3 states and 345 transitions. [2024-11-07 19:26:04,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 181 transitions, 601 flow [2024-11-07 19:26:04,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 181 transitions, 587 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:04,024 INFO L231 Difference]: Finished difference. Result has 162 places, 159 transitions, 351 flow [2024-11-07 19:26:04,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=162, PETRI_TRANSITIONS=159} [2024-11-07 19:26:04,025 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 6 predicate places. [2024-11-07 19:26:04,025 INFO L471 AbstractCegarLoop]: Abstraction has has 162 places, 159 transitions, 351 flow [2024-11-07 19:26:04,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 19:26:04,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:04,025 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:04,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:26:04,026 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:04,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:04,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1861751085, now seen corresponding path program 1 times [2024-11-07 19:26:04,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:04,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488511181] [2024-11-07 19:26:04,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:04,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:04,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488511181] [2024-11-07 19:26:04,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488511181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:04,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890301260] [2024-11-07 19:26:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:04,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:04,130 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 19:26:04,131 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 19:26:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:04,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:26:04,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:04,220 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:04,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890301260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:04,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:04,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 19:26:04,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864874884] [2024-11-07 19:26:04,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:04,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:26:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:26:04,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:26:04,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196 [2024-11-07 19:26:04,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 159 transitions, 351 flow. Second operand has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 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 19:26:04,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:04,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196 [2024-11-07 19:26:04,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:04,664 INFO L124 PetriNetUnfolderBase]: 1016/3442 cut-off events. [2024-11-07 19:26:04,665 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-11-07 19:26:04,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 3442 events. 1016/3442 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 30435 event pairs, 861 based on Foata normal form. 6/2954 useless extension candidates. Maximal degree in co-relation 5386. Up to 1919 conditions per place. [2024-11-07 19:26:04,676 INFO L140 encePairwiseOnDemand]: 193/196 looper letters, 69 selfloop transitions, 11 changer transitions 0/165 dead transitions. [2024-11-07 19:26:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 165 transitions, 547 flow [2024-11-07 19:26:04,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:26:04,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:26:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1130 transitions. [2024-11-07 19:26:04,679 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4804421768707483 [2024-11-07 19:26:04,679 INFO L175 Difference]: Start difference. First operand has 162 places, 159 transitions, 351 flow. Second operand 12 states and 1130 transitions. [2024-11-07 19:26:04,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 165 transitions, 547 flow [2024-11-07 19:26:04,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 165 transitions, 543 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:26:04,683 INFO L231 Difference]: Finished difference. Result has 177 places, 165 transitions, 431 flow [2024-11-07 19:26:04,683 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=431, PETRI_PLACES=177, PETRI_TRANSITIONS=165} [2024-11-07 19:26:04,683 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 21 predicate places. [2024-11-07 19:26:04,684 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 165 transitions, 431 flow [2024-11-07 19:26:04,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.15384615384616) internal successors, (1146), 13 states have internal predecessors, (1146), 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 19:26:04,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:04,684 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-07 19:26:04,697 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 19:26:04,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:04,888 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:04,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:04,889 INFO L85 PathProgramCache]: Analyzing trace with hash 510619347, now seen corresponding path program 2 times [2024-11-07 19:26:04,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:04,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321284264] [2024-11-07 19:26:04,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:04,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321284264] [2024-11-07 19:26:05,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321284264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:05,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398025090] [2024-11-07 19:26:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:05,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:05,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 196 [2024-11-07 19:26:05,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 165 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 19:26:05,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:05,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 196 [2024-11-07 19:26:05,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:05,365 INFO L124 PetriNetUnfolderBase]: 993/3218 cut-off events. [2024-11-07 19:26:05,366 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-07 19:26:05,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5194 conditions, 3218 events. 993/3218 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 28737 event pairs, 0 based on Foata normal form. 1/2790 useless extension candidates. Maximal degree in co-relation 5118. Up to 1887 conditions per place. [2024-11-07 19:26:05,383 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 102 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-11-07 19:26:05,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 188 transitions, 685 flow [2024-11-07 19:26:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2024-11-07 19:26:05,385 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-11-07 19:26:05,385 INFO L175 Difference]: Start difference. First operand has 177 places, 165 transitions, 431 flow. Second operand 3 states and 354 transitions. [2024-11-07 19:26:05,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 188 transitions, 685 flow [2024-11-07 19:26:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 188 transitions, 637 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-07 19:26:05,389 INFO L231 Difference]: Finished difference. Result has 175 places, 165 transitions, 393 flow [2024-11-07 19:26:05,389 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=175, PETRI_TRANSITIONS=165} [2024-11-07 19:26:05,390 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, 19 predicate places. [2024-11-07 19:26:05,390 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 165 transitions, 393 flow [2024-11-07 19:26:05,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 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 19:26:05,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:05,390 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:26:05,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 19:26:05,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:05,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1787046587, now seen corresponding path program 1 times [2024-11-07 19:26:05,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:05,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451219542] [2024-11-07 19:26:05,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:05,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:05,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451219542] [2024-11-07 19:26:05,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451219542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:05,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663995420] [2024-11-07 19:26:05,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:05,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:05,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:05,518 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 19:26:05,520 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 19:26:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:05,601 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 19:26:05,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:05,623 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 19:26:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:05,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663995420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:05,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:05,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:05,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737499420] [2024-11-07 19:26:05,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:05,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:05,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:05,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:05,842 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 196 [2024-11-07 19:26:05,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 165 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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 19:26:05,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:05,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 196 [2024-11-07 19:26:05,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:05,947 INFO L124 PetriNetUnfolderBase]: 72/276 cut-off events. [2024-11-07 19:26:05,947 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-11-07 19:26:05,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 276 events. 72/276 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1123 event pairs, 34 based on Foata normal form. 44/292 useless extension candidates. Maximal degree in co-relation 479. Up to 132 conditions per place. [2024-11-07 19:26:05,954 INFO L140 encePairwiseOnDemand]: 192/196 looper letters, 61 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-07 19:26:05,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 90 transitions, 362 flow [2024-11-07 19:26:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:26:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:26:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2024-11-07 19:26:05,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5038265306122449 [2024-11-07 19:26:05,959 INFO L175 Difference]: Start difference. First operand has 175 places, 165 transitions, 393 flow. Second operand 4 states and 395 transitions. [2024-11-07 19:26:05,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 90 transitions, 362 flow [2024-11-07 19:26:05,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 90 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:26:05,961 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 186 flow [2024-11-07 19:26:05,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-11-07 19:26:05,962 INFO L277 CegarLoopForPetriNet]: 156 programPoint places, -76 predicate places. [2024-11-07 19:26:05,962 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 186 flow [2024-11-07 19:26:05,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 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 19:26:05,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:05,966 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2024-11-07 19:26:05,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-07 19:26:06,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:06,167 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-07 19:26:06,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash -436129632, now seen corresponding path program 1 times [2024-11-07 19:26:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:06,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638971609] [2024-11-07 19:26:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:06,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:26:06,211 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:26:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:26:06,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:26:06,255 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:26:06,256 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (44 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-07 19:26:06,257 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (29 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (22 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-07 19:26:06,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-07 19:26:06,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-07 19:26:06,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-07 19:26:06,265 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 50 remaining) [2024-11-07 19:26:06,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:26:06,266 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-07 19:26:06,268 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:26:06,268 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:26:06,337 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:26:06,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 259 transitions, 534 flow [2024-11-07 19:26:06,391 INFO L124 PetriNetUnfolderBase]: 113/525 cut-off events. [2024-11-07 19:26:06,391 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:26:06,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 537 conditions, 525 events. 113/525 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3427 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 325. Up to 12 conditions per place. [2024-11-07 19:26:06,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 259 transitions, 534 flow [2024-11-07 19:26:06,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 259 transitions, 534 flow [2024-11-07 19:26:06,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:26:06,398 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;@3872c370, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:26:06,398 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2024-11-07 19:26:06,399 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:26:06,399 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-07 19:26:06,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:26:06,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:06,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-07 19:26:06,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:06,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 35428242, now seen corresponding path program 1 times [2024-11-07 19:26:06,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:06,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551253995] [2024-11-07 19:26:06,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:06,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:06,421 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 19:26:06,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:06,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551253995] [2024-11-07 19:26:06,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551253995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:06,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:06,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:06,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703889366] [2024-11-07 19:26:06,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:06,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:06,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:06,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-07 19:26:06,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 259 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 19:26:06,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:06,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-07 19:26:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:12,529 INFO L124 PetriNetUnfolderBase]: 44674/99599 cut-off events. [2024-11-07 19:26:12,531 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-07 19:26:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164300 conditions, 99599 events. 44674/99599 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 1207882 event pairs, 39313 based on Foata normal form. 23707/109828 useless extension candidates. Maximal degree in co-relation 151614. Up to 64558 conditions per place. [2024-11-07 19:26:13,315 INFO L140 encePairwiseOnDemand]: 208/259 looper letters, 93 selfloop transitions, 2 changer transitions 0/208 dead transitions. [2024-11-07 19:26:13,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 208 transitions, 622 flow [2024-11-07 19:26:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2024-11-07 19:26:13,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-11-07 19:26:13,318 INFO L175 Difference]: Start difference. First operand has 206 places, 259 transitions, 534 flow. Second operand 3 states and 483 transitions. [2024-11-07 19:26:13,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 208 transitions, 622 flow [2024-11-07 19:26:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 208 transitions, 622 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:26:13,323 INFO L231 Difference]: Finished difference. Result has 205 places, 208 transitions, 442 flow [2024-11-07 19:26:13,323 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=205, PETRI_TRANSITIONS=208} [2024-11-07 19:26:13,324 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, -1 predicate places. [2024-11-07 19:26:13,324 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 208 transitions, 442 flow [2024-11-07 19:26:13,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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 19:26:13,325 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:13,325 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-07 19:26:13,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:26:13,325 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:13,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:13,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1098281749, now seen corresponding path program 1 times [2024-11-07 19:26:13,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:13,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423778686] [2024-11-07 19:26:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:13,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:13,378 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 19:26:13,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423778686] [2024-11-07 19:26:13,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423778686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:13,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424160990] [2024-11-07 19:26:13,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:13,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:13,381 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 19:26:13,388 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 19:26:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:13,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 19:26:13,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:13,486 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 19:26:13,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:13,504 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 19:26:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424160990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:13,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-07 19:26:13,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927349040] [2024-11-07 19:26:13,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:13,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 19:26:13,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 19:26:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-07 19:26:13,507 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-07 19:26:13,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 208 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 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 19:26:13,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:13,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-07 19:26:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:19,667 INFO L124 PetriNetUnfolderBase]: 44674/99602 cut-off events. [2024-11-07 19:26:19,668 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-07 19:26:19,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164316 conditions, 99602 events. 44674/99602 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 1207887 event pairs, 39313 based on Foata normal form. 0/86124 useless extension candidates. Maximal degree in co-relation 164303. Up to 64558 conditions per place. [2024-11-07 19:26:20,270 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 93 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2024-11-07 19:26:20,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 211 transitions, 650 flow [2024-11-07 19:26:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:26:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:26:20,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 779 transitions. [2024-11-07 19:26:20,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5012870012870013 [2024-11-07 19:26:20,273 INFO L175 Difference]: Start difference. First operand has 205 places, 208 transitions, 442 flow. Second operand 6 states and 779 transitions. [2024-11-07 19:26:20,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 211 transitions, 650 flow [2024-11-07 19:26:20,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 211 transitions, 646 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:20,277 INFO L231 Difference]: Finished difference. Result has 212 places, 211 transitions, 474 flow [2024-11-07 19:26:20,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=474, PETRI_PLACES=212, PETRI_TRANSITIONS=211} [2024-11-07 19:26:20,277 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 6 predicate places. [2024-11-07 19:26:20,277 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 211 transitions, 474 flow [2024-11-07 19:26:20,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 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 19:26:20,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:20,278 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:20,291 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 19:26:20,482 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 19:26:20,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:20,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:20,483 INFO L85 PathProgramCache]: Analyzing trace with hash -143073198, now seen corresponding path program 2 times [2024-11-07 19:26:20,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:20,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916835972] [2024-11-07 19:26:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-07 19:26:20,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:20,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916835972] [2024-11-07 19:26:20,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916835972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878177174] [2024-11-07 19:26:20,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:20,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:20,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:20,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:20,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 259 [2024-11-07 19:26:20,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 211 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 19:26:20,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:20,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 259 [2024-11-07 19:26:20,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:26,237 INFO L124 PetriNetUnfolderBase]: 47090/103142 cut-off events. [2024-11-07 19:26:26,237 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-07 19:26:26,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171284 conditions, 103142 events. 47090/103142 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 1242082 event pairs, 39292 based on Foata normal form. 0/89868 useless extension candidates. Maximal degree in co-relation 171249. Up to 64472 conditions per place. [2024-11-07 19:26:26,882 INFO L140 encePairwiseOnDemand]: 255/259 looper letters, 142 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2024-11-07 19:26:26,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 253 transitions, 846 flow [2024-11-07 19:26:26,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:26:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:26:26,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2024-11-07 19:26:26,884 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-11-07 19:26:26,884 INFO L175 Difference]: Start difference. First operand has 212 places, 211 transitions, 474 flow. Second operand 3 states and 469 transitions. [2024-11-07 19:26:26,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 253 transitions, 846 flow [2024-11-07 19:26:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 253 transitions, 832 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-07 19:26:26,888 INFO L231 Difference]: Finished difference. Result has 211 places, 209 transitions, 460 flow [2024-11-07 19:26:26,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2024-11-07 19:26:26,888 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 5 predicate places. [2024-11-07 19:26:26,888 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 460 flow [2024-11-07 19:26:26,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 19:26:26,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:26,889 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2024-11-07 19:26:26,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 19:26:26,889 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash -143073197, now seen corresponding path program 1 times [2024-11-07 19:26:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546671059] [2024-11-07 19:26:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:26,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:26,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546671059] [2024-11-07 19:26:26,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546671059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:26:26,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91849423] [2024-11-07 19:26:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:26,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:26:26,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:26:26,953 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 19:26:26,954 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 19:26:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:27,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 19:26:27,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:26:27,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:27,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:26:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:26:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91849423] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:26:27,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:26:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-07 19:26:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474083181] [2024-11-07 19:26:27,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:26:27,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 19:26:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 19:26:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-07 19:26:27,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 259 [2024-11-07 19:26:27,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 460 flow. Second operand has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 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 19:26:27,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:27,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 259 [2024-11-07 19:26:27,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:26:32,725 INFO L124 PetriNetUnfolderBase]: 44674/99280 cut-off events. [2024-11-07 19:26:32,725 INFO L125 PetriNetUnfolderBase]: For 1253/1253 co-relation queries the response was YES. [2024-11-07 19:26:33,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164966 conditions, 99280 events. 44674/99280 cut-off events. For 1253/1253 co-relation queries the response was YES. Maximal size of possible extension queue 2860. Compared 1200498 event pairs, 39313 based on Foata normal form. 6/86137 useless extension candidates. Maximal degree in co-relation 164913. Up to 64558 conditions per place. [2024-11-07 19:26:33,284 INFO L140 encePairwiseOnDemand]: 256/259 looper letters, 93 selfloop transitions, 11 changer transitions 0/215 dead transitions. [2024-11-07 19:26:33,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 215 transitions, 704 flow [2024-11-07 19:26:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-07 19:26:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-07 19:26:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1466 transitions. [2024-11-07 19:26:33,287 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4716859716859717 [2024-11-07 19:26:33,287 INFO L175 Difference]: Start difference. First operand has 211 places, 209 transitions, 460 flow. Second operand 12 states and 1466 transitions. [2024-11-07 19:26:33,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 215 transitions, 704 flow [2024-11-07 19:26:33,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 215 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:26:33,331 INFO L231 Difference]: Finished difference. Result has 226 places, 215 transitions, 540 flow [2024-11-07 19:26:33,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=540, PETRI_PLACES=226, PETRI_TRANSITIONS=215} [2024-11-07 19:26:33,332 INFO L277 CegarLoopForPetriNet]: 206 programPoint places, 20 predicate places. [2024-11-07 19:26:33,332 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 215 transitions, 540 flow [2024-11-07 19:26:33,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.15384615384616) internal successors, (1484), 13 states have internal predecessors, (1484), 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 19:26:33,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:26:33,332 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2024-11-07 19:26:33,345 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 19:26:33,536 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,SelfDestructingSolverStorable10 [2024-11-07 19:26:33,536 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2024-11-07 19:26:33,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:26:33,537 INFO L85 PathProgramCache]: Analyzing trace with hash -361244301, now seen corresponding path program 2 times [2024-11-07 19:26:33,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:26:33,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243231059] [2024-11-07 19:26:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:26:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:26:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:26:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-07 19:26:33,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:26:33,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243231059] [2024-11-07 19:26:33,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243231059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:26:33,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:26:33,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:26:33,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096933996] [2024-11-07 19:26:33,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:26:33,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:26:33,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:26:33,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:26:33,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:26:33,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 259 [2024-11-07 19:26:33,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 215 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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 19:26:33,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:26:33,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 259 [2024-11-07 19:26:33,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand