./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml', '-i', '../sv-benchmarks/c/pthread-complex/safestack_relacy.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', '516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-complex/safestack_relacy.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 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:21:34,879 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:21:34,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:21:34,962 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:21:34,964 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:21:34,995 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:21:34,997 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:21:34,997 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:21:34,997 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:21:34,998 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:21:34,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:21:34,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:21:34,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:21:34,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:21:34,999 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:21:34,999 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:21:34,999 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:21:35,000 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:21:35,000 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:21:35,000 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:21:35,000 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:21:35,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:21:35,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:21:35,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:21:35,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:21:35,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:21:35,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:21:35,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:21:35,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:21:35,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:21:35,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:21:35,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:21:35,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:21:35,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:21:35,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:21:35,004 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 -> 516fee84c55ddb7fa4275a43ad5a2da6ea994abf63bbbbd8ed5c82108d65f7b0 [2024-11-07 19:21:35,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:21:35,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:21:35,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:21:35,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:21:35,291 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:21:35,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-07 19:21:36,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:21:36,924 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:21:36,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-11-07 19:21:36,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94157bc99/621fa9fc7df742baaf5e202c8a4fe7a5/FLAG783c5cbe9 [2024-11-07 19:21:36,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/94157bc99/621fa9fc7df742baaf5e202c8a4fe7a5 [2024-11-07 19:21:36,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:21:36,968 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:21:36,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:21:36,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:21:36,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:21:36,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:21:36" (1/1) ... [2024-11-07 19:21:36,978 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24179f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:36, skipping insertion in model container [2024-11-07 19:21:36,978 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:21:36" (1/1) ... [2024-11-07 19:21:37,024 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:21:37,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:21:37,482 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:21:37,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:21:37,694 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:21:37,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37 WrapperNode [2024-11-07 19:21:37,696 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:21:37,697 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:21:37,697 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:21:37,697 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:21:37,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,765 INFO L138 Inliner]: procedures = 458, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 177 [2024-11-07 19:21:37,766 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:21:37,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:21:37,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:21:37,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:21:37,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,814 INFO L175 MemorySlicer]: Split 37 memory accesses to 3 slices as follows [2, 5, 30]. 81 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 3, 8]. The 13 writes are split as follows [0, 1, 12]. [2024-11-07 19:21:37,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:21:37,843 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:21:37,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:21:37,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:21:37,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (1/1) ... [2024-11-07 19:21:37,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:21:37,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:37,890 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 19:21:37,894 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 19:21:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-11-07 19:21:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:21:37,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:21:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:21:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:21:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:21:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:21:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:21:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:21:37,924 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 19:21:38,181 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:21:38,183 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:21:38,549 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:21:38,550 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:21:38,781 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:21:38,782 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-07 19:21:38,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:21:38 BoogieIcfgContainer [2024-11-07 19:21:38,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:21:38,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:21:38,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:21:38,789 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:21:38,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:21:36" (1/3) ... [2024-11-07 19:21:38,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3814fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:21:38, skipping insertion in model container [2024-11-07 19:21:38,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:21:37" (2/3) ... [2024-11-07 19:21:38,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3814fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:21:38, skipping insertion in model container [2024-11-07 19:21:38,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:21:38" (3/3) ... [2024-11-07 19:21:38,793 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-11-07 19:21:38,806 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:21:38,806 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-07 19:21:38,806 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:21:38,894 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-07 19:21:38,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 117 transitions, 241 flow [2024-11-07 19:21:38,980 INFO L124 PetriNetUnfolderBase]: 13/129 cut-off events. [2024-11-07 19:21:38,983 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-07 19:21:38,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 129 events. 13/129 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 476 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 95. Up to 3 conditions per place. [2024-11-07 19:21:38,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 117 transitions, 241 flow [2024-11-07 19:21:38,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 117 transitions, 241 flow [2024-11-07 19:21:39,000 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:21:39,014 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;@5a77a0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:21:39,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-07 19:21:39,017 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:21:39,018 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-07 19:21:39,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:21:39,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:39,019 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:21:39,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:39,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:39,023 INFO L85 PathProgramCache]: Analyzing trace with hash 18708, now seen corresponding path program 1 times [2024-11-07 19:21:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574596710] [2024-11-07 19:21:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:39,394 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 19:21:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:39,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574596710] [2024-11-07 19:21:39,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574596710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:39,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:39,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:39,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660129320] [2024-11-07 19:21:39,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:39,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:39,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:39,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:39,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-07 19:21:39,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:21:39,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:39,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-07 19:21:39,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:39,728 INFO L124 PetriNetUnfolderBase]: 223/549 cut-off events. [2024-11-07 19:21:39,728 INFO L125 PetriNetUnfolderBase]: For 4/6 co-relation queries the response was YES. [2024-11-07 19:21:39,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 549 events. 223/549 cut-off events. For 4/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2381 event pairs, 185 based on Foata normal form. 24/410 useless extension candidates. Maximal degree in co-relation 954. Up to 455 conditions per place. [2024-11-07 19:21:39,737 INFO L140 encePairwiseOnDemand]: 83/117 looper letters, 60 selfloop transitions, 1 changer transitions 0/83 dead transitions. [2024-11-07 19:21:39,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 83 transitions, 295 flow [2024-11-07 19:21:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:39,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-07 19:21:39,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46438746438746437 [2024-11-07 19:21:39,753 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 241 flow. Second operand 3 states and 163 transitions. [2024-11-07 19:21:39,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 83 transitions, 295 flow [2024-11-07 19:21:39,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 295 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:21:39,763 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 175 flow [2024-11-07 19:21:39,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-11-07 19:21:39,768 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-07 19:21:39,770 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 175 flow [2024-11-07 19:21:39,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 19:21:39,770 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:39,770 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:21:39,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:21:39,771 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:39,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash 18709, now seen corresponding path program 1 times [2024-11-07 19:21:39,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:39,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454256760] [2024-11-07 19:21:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:39,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454256760] [2024-11-07 19:21:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454256760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:39,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:39,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056483013] [2024-11-07 19:21:39,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:39,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:39,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:39,945 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-07 19:21:39,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 19:21:39,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:39,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-07 19:21:39,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:40,107 INFO L124 PetriNetUnfolderBase]: 188/470 cut-off events. [2024-11-07 19:21:40,107 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:21:40,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 470 events. 188/470 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1971 event pairs, 150 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 847. Up to 376 conditions per place. [2024-11-07 19:21:40,114 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/74 dead transitions. [2024-11-07 19:21:40,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 261 flow [2024-11-07 19:21:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-07 19:21:40,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38746438746438744 [2024-11-07 19:21:40,118 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 175 flow. Second operand 3 states and 136 transitions. [2024-11-07 19:21:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 261 flow [2024-11-07 19:21:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:21:40,121 INFO L231 Difference]: Finished difference. Result has 72 places, 74 transitions, 158 flow [2024-11-07 19:21:40,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=74} [2024-11-07 19:21:40,122 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -35 predicate places. [2024-11-07 19:21:40,122 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 74 transitions, 158 flow [2024-11-07 19:21:40,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 19:21:40,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:40,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:21:40,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 19:21:40,123 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:40,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 118810337, now seen corresponding path program 1 times [2024-11-07 19:21:40,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571415070] [2024-11-07 19:21:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:40,324 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 19:21:40,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:40,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571415070] [2024-11-07 19:21:40,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571415070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:40,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:40,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:21:40,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336813350] [2024-11-07 19:21:40,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:40,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:21:40,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:40,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:21:40,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:21:40,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-07 19:21:40,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 74 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 19:21:40,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:40,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-07 19:21:40,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:40,527 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-07 19:21:40,527 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2024-11-07 19:21:40,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 477 events. 189/477 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2003 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 861. Up to 378 conditions per place. [2024-11-07 19:21:40,532 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 55 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2024-11-07 19:21:40,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 288 flow [2024-11-07 19:21:40,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:21:40,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:21:40,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-07 19:21:40,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-07 19:21:40,534 INFO L175 Difference]: Start difference. First operand has 72 places, 74 transitions, 158 flow. Second operand 4 states and 156 transitions. [2024-11-07 19:21:40,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 288 flow [2024-11-07 19:21:40,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:21:40,538 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 178 flow [2024-11-07 19:21:40,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-07 19:21:40,540 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -32 predicate places. [2024-11-07 19:21:40,540 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 178 flow [2024-11-07 19:21:40,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 19:21:40,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:40,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:21:40,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 19:21:40,541 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:40,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash 118810309, now seen corresponding path program 1 times [2024-11-07 19:21:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328799822] [2024-11-07 19:21:40,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:40,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:40,651 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 19:21:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328799822] [2024-11-07 19:21:40,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328799822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:40,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:40,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:21:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491838951] [2024-11-07 19:21:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:40,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:21:40,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:40,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:21:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:21:40,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 117 [2024-11-07 19:21:40,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 19:21:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:40,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 117 [2024-11-07 19:21:40,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:40,819 INFO L124 PetriNetUnfolderBase]: 188/473 cut-off events. [2024-11-07 19:21:40,820 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2024-11-07 19:21:40,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 473 events. 188/473 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1970 event pairs, 150 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 859. Up to 368 conditions per place. [2024-11-07 19:21:40,823 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 51 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-07 19:21:40,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 285 flow [2024-11-07 19:21:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:21:40,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:21:40,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-07 19:21:40,825 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3247863247863248 [2024-11-07 19:21:40,825 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 178 flow. Second operand 4 states and 152 transitions. [2024-11-07 19:21:40,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 285 flow [2024-11-07 19:21:40,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 279 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:21:40,827 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 179 flow [2024-11-07 19:21:40,827 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-07 19:21:40,828 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-07 19:21:40,828 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 179 flow [2024-11-07 19:21:40,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 19:21:40,828 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:40,829 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:40,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 19:21:40,829 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:40,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:40,829 INFO L85 PathProgramCache]: Analyzing trace with hash 426277240, now seen corresponding path program 1 times [2024-11-07 19:21:40,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:40,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054733526] [2024-11-07 19:21:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054733526] [2024-11-07 19:21:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054733526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:21:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586134933] [2024-11-07 19:21:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:41,116 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 19:21:41,119 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 19:21:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:41,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:21:41,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:21:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:41,393 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:21:41,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-07 19:21:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:41,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586134933] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:21:41,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:21:41,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-07 19:21:41,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270087947] [2024-11-07 19:21:41,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:21:41,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:21:41,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:41,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:21:41,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:21:41,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-07 19:21:41,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 179 flow. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 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 19:21:41,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:41,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-07 19:21:41,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:42,189 INFO L124 PetriNetUnfolderBase]: 189/477 cut-off events. [2024-11-07 19:21:42,190 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-07 19:21:42,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 884 conditions, 477 events. 189/477 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1996 event pairs, 150 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-07 19:21:42,193 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 54 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-11-07 19:21:42,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 315 flow [2024-11-07 19:21:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:21:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:21:42,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-11-07 19:21:42,198 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27228327228327226 [2024-11-07 19:21:42,198 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 179 flow. Second operand 7 states and 223 transitions. [2024-11-07 19:21:42,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 315 flow [2024-11-07 19:21:42,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 81 transitions, 305 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:21:42,200 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 190 flow [2024-11-07 19:21:42,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2024-11-07 19:21:42,202 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-07 19:21:42,203 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 190 flow [2024-11-07 19:21:42,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 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 19:21:42,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:42,204 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:42,223 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 19:21:42,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:42,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:42,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:42,405 INFO L85 PathProgramCache]: Analyzing trace with hash 426277212, now seen corresponding path program 1 times [2024-11-07 19:21:42,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:42,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681271659] [2024-11-07 19:21:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:42,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:42,512 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 19:21:42,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681271659] [2024-11-07 19:21:42,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681271659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:21:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129269008] [2024-11-07 19:21:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:42,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:42,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:42,516 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 19:21:42,518 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 19:21:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:42,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:21:42,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:21:42,657 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 19:21:42,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:21:42,689 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 19:21:42,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129269008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:21:42,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:21:42,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-07 19:21:42,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932788146] [2024-11-07 19:21:42,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:21:42,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:21:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:42,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:21:42,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:21:42,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-07 19:21:42,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 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 19:21:42,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:42,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-07 19:21:42,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:42,880 INFO L124 PetriNetUnfolderBase]: 188/475 cut-off events. [2024-11-07 19:21:42,881 INFO L125 PetriNetUnfolderBase]: For 16/18 co-relation queries the response was YES. [2024-11-07 19:21:42,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 475 events. 188/475 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1968 event pairs, 150 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 875. Up to 368 conditions per place. [2024-11-07 19:21:42,883 INFO L140 encePairwiseOnDemand]: 111/117 looper letters, 52 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-11-07 19:21:42,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 79 transitions, 319 flow [2024-11-07 19:21:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:21:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:21:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-07 19:21:42,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-11-07 19:21:42,885 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 190 flow. Second operand 6 states and 198 transitions. [2024-11-07 19:21:42,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 79 transitions, 319 flow [2024-11-07 19:21:42,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-07 19:21:42,888 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 200 flow [2024-11-07 19:21:42,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-07 19:21:42,889 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -25 predicate places. [2024-11-07 19:21:42,889 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 200 flow [2024-11-07 19:21:42,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 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 19:21:42,889 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:42,889 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:42,906 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 19:21:43,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:43,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:43,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -992457883, now seen corresponding path program 2 times [2024-11-07 19:21:43,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:43,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85725771] [2024-11-07 19:21:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85725771] [2024-11-07 19:21:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85725771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:43,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748144096] [2024-11-07 19:21:43,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:43,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:43,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 117 [2024-11-07 19:21:43,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:43,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:43,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 117 [2024-11-07 19:21:43,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:43,396 INFO L124 PetriNetUnfolderBase]: 188/474 cut-off events. [2024-11-07 19:21:43,396 INFO L125 PetriNetUnfolderBase]: For 17/19 co-relation queries the response was YES. [2024-11-07 19:21:43,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 474 events. 188/474 cut-off events. For 17/19 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1966 event pairs, 150 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 873. Up to 368 conditions per place. [2024-11-07 19:21:43,399 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 50 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-07 19:21:43,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 302 flow [2024-11-07 19:21:43,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:43,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-07 19:21:43,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-11-07 19:21:43,400 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 200 flow. Second operand 3 states and 126 transitions. [2024-11-07 19:21:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 302 flow [2024-11-07 19:21:43,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:21:43,402 INFO L231 Difference]: Finished difference. Result has 79 places, 75 transitions, 188 flow [2024-11-07 19:21:43,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=79, PETRI_TRANSITIONS=75} [2024-11-07 19:21:43,403 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -28 predicate places. [2024-11-07 19:21:43,403 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 75 transitions, 188 flow [2024-11-07 19:21:43,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:43,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:43,406 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:43,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 19:21:43,406 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:43,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash 242692767, now seen corresponding path program 1 times [2024-11-07 19:21:43,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:43,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608487890] [2024-11-07 19:21:43,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:43,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608487890] [2024-11-07 19:21:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608487890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:43,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:43,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:43,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102695492] [2024-11-07 19:21:43,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:43,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:43,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:43,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-07 19:21:43,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 19:21:43,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:43,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-07 19:21:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:43,636 INFO L124 PetriNetUnfolderBase]: 188/468 cut-off events. [2024-11-07 19:21:43,636 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2024-11-07 19:21:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 468 events. 188/468 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1917 event pairs, 150 based on Foata normal form. 64/428 useless extension candidates. Maximal degree in co-relation 862. Up to 378 conditions per place. [2024-11-07 19:21:43,638 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 51 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2024-11-07 19:21:43,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 288 flow [2024-11-07 19:21:43,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:43,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-11-07 19:21:43,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34472934472934474 [2024-11-07 19:21:43,640 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 188 flow. Second operand 3 states and 121 transitions. [2024-11-07 19:21:43,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 288 flow [2024-11-07 19:21:43,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:21:43,641 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 182 flow [2024-11-07 19:21:43,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-07 19:21:43,642 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -30 predicate places. [2024-11-07 19:21:43,642 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 182 flow [2024-11-07 19:21:43,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 19:21:43,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:43,645 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:43,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 19:21:43,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:43,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:43,646 INFO L85 PathProgramCache]: Analyzing trace with hash 242692768, now seen corresponding path program 1 times [2024-11-07 19:21:43,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:43,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700670802] [2024-11-07 19:21:43,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:43,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700670802] [2024-11-07 19:21:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700670802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:43,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:21:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236908228] [2024-11-07 19:21:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:43,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:21:43,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:43,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:21:43,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:21:43,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 117 [2024-11-07 19:21:43,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 19:21:43,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:43,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 117 [2024-11-07 19:21:43,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:44,008 INFO L124 PetriNetUnfolderBase]: 151/421 cut-off events. [2024-11-07 19:21:44,009 INFO L125 PetriNetUnfolderBase]: For 10/13 co-relation queries the response was YES. [2024-11-07 19:21:44,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 421 events. 151/421 cut-off events. For 10/13 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1999 event pairs, 34 based on Foata normal form. 61/401 useless extension candidates. Maximal degree in co-relation 758. Up to 217 conditions per place. [2024-11-07 19:21:44,011 INFO L140 encePairwiseOnDemand]: 109/117 looper letters, 83 selfloop transitions, 5 changer transitions 1/108 dead transitions. [2024-11-07 19:21:44,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 430 flow [2024-11-07 19:21:44,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:21:44,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:21:44,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-07 19:21:44,012 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2024-11-07 19:21:44,012 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 182 flow. Second operand 4 states and 183 transitions. [2024-11-07 19:21:44,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 430 flow [2024-11-07 19:21:44,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:21:44,016 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 199 flow [2024-11-07 19:21:44,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-11-07 19:21:44,016 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -27 predicate places. [2024-11-07 19:21:44,016 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 199 flow [2024-11-07 19:21:44,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 19:21:44,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:44,017 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:44,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 19:21:44,017 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:44,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash -979843097, now seen corresponding path program 1 times [2024-11-07 19:21:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213092139] [2024-11-07 19:21:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:44,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213092139] [2024-11-07 19:21:44,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213092139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:21:44,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339784792] [2024-11-07 19:21:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:44,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:44,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:44,219 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 19:21:44,221 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 19:21:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:44,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:21:44,317 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:21:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:44,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:21:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339784792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:21:44,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:21:44,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:21:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011505008] [2024-11-07 19:21:44,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:21:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:21:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:21:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:21:44,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 117 [2024-11-07 19:21:44,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 72 transitions, 199 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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 19:21:44,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:44,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 117 [2024-11-07 19:21:44,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:44,984 INFO L124 PetriNetUnfolderBase]: 116/313 cut-off events. [2024-11-07 19:21:44,984 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-07 19:21:44,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 313 events. 116/313 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1266 event pairs, 26 based on Foata normal form. 66/335 useless extension candidates. Maximal degree in co-relation 641. Up to 202 conditions per place. [2024-11-07 19:21:44,986 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 81 selfloop transitions, 3 changer transitions 0/99 dead transitions. [2024-11-07 19:21:44,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 99 transitions, 406 flow [2024-11-07 19:21:44,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 19:21:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-07 19:21:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-11-07 19:21:44,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3230769230769231 [2024-11-07 19:21:44,988 INFO L175 Difference]: Start difference. First operand has 80 places, 72 transitions, 199 flow. Second operand 5 states and 189 transitions. [2024-11-07 19:21:44,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 99 transitions, 406 flow [2024-11-07 19:21:44,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 99 transitions, 398 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:21:44,991 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 164 flow [2024-11-07 19:21:44,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-11-07 19:21:44,991 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -36 predicate places. [2024-11-07 19:21:44,991 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 164 flow [2024-11-07 19:21:44,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 states have internal predecessors, (273), 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 19:21:44,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:44,992 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:45,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 19:21:45,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:45,197 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-07 19:21:45,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:45,197 INFO L85 PathProgramCache]: Analyzing trace with hash -310364262, now seen corresponding path program 1 times [2024-11-07 19:21:45,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:45,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016241863] [2024-11-07 19:21:45,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:45,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:21:45,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:21:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:21:45,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:21:45,277 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:21:45,278 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (87 of 88 remaining) [2024-11-07 19:21:45,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 88 remaining) [2024-11-07 19:21:45,279 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 88 remaining) [2024-11-07 19:21:45,280 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (74 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 88 remaining) [2024-11-07 19:21:45,281 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 88 remaining) [2024-11-07 19:21:45,282 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 88 remaining) [2024-11-07 19:21:45,283 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 88 remaining) [2024-11-07 19:21:45,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 88 remaining) [2024-11-07 19:21:45,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 88 remaining) [2024-11-07 19:21:45,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 88 remaining) [2024-11-07 19:21:45,284 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 88 remaining) [2024-11-07 19:21:45,286 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 88 remaining) [2024-11-07 19:21:45,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 88 remaining) [2024-11-07 19:21:45,288 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 88 remaining) [2024-11-07 19:21:45,289 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 88 remaining) [2024-11-07 19:21:45,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 19:21:45,290 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:45,293 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:21:45,293 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-07 19:21:45,355 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:21:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 201 transitions, 418 flow [2024-11-07 19:21:45,384 INFO L124 PetriNetUnfolderBase]: 26/237 cut-off events. [2024-11-07 19:21:45,385 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-07 19:21:45,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 237 events. 26/237 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1180 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 187. Up to 6 conditions per place. [2024-11-07 19:21:45,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 201 transitions, 418 flow [2024-11-07 19:21:45,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 201 transitions, 418 flow [2024-11-07 19:21:45,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:21:45,393 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;@5a77a0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:21:45,394 INFO L334 AbstractCegarLoop]: Starting to check reachability of 125 error locations. [2024-11-07 19:21:45,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:21:45,395 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-07 19:21:45,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:21:45,395 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:45,395 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:21:45,395 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:45,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 25140, now seen corresponding path program 1 times [2024-11-07 19:21:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:45,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566417493] [2024-11-07 19:21:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566417493] [2024-11-07 19:21:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566417493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379303733] [2024-11-07 19:21:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:45,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:45,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-07 19:21:45,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 201 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:45,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:45,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-07 19:21:45,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:47,875 INFO L124 PetriNetUnfolderBase]: 19095/30098 cut-off events. [2024-11-07 19:21:47,875 INFO L125 PetriNetUnfolderBase]: For 330/335 co-relation queries the response was YES. [2024-11-07 19:21:47,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58614 conditions, 30098 events. 19095/30098 cut-off events. For 330/335 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 204963 event pairs, 16870 based on Foata normal form. 1814/22601 useless extension candidates. Maximal degree in co-relation 55727. Up to 28317 conditions per place. [2024-11-07 19:21:48,073 INFO L140 encePairwiseOnDemand]: 138/201 looper letters, 103 selfloop transitions, 1 changer transitions 0/137 dead transitions. [2024-11-07 19:21:48,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 498 flow [2024-11-07 19:21:48,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2024-11-07 19:21:48,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4494195688225539 [2024-11-07 19:21:48,075 INFO L175 Difference]: Start difference. First operand has 181 places, 201 transitions, 418 flow. Second operand 3 states and 271 transitions. [2024-11-07 19:21:48,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 498 flow [2024-11-07 19:21:48,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-07 19:21:48,077 INFO L231 Difference]: Finished difference. Result has 129 places, 137 transitions, 292 flow [2024-11-07 19:21:48,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=129, PETRI_TRANSITIONS=137} [2024-11-07 19:21:48,078 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -52 predicate places. [2024-11-07 19:21:48,078 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 137 transitions, 292 flow [2024-11-07 19:21:48,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:48,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:48,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:21:48,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 19:21:48,079 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:48,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash 25141, now seen corresponding path program 1 times [2024-11-07 19:21:48,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:48,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107355869] [2024-11-07 19:21:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:48,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:48,125 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 19:21:48,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:48,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107355869] [2024-11-07 19:21:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107355869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:48,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:48,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:48,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605926474] [2024-11-07 19:21:48,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:48,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:48,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-07 19:21:48,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 137 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:48,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:48,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-07 19:21:48,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:49,613 INFO L124 PetriNetUnfolderBase]: 13222/20991 cut-off events. [2024-11-07 19:21:49,614 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-07 19:21:49,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40552 conditions, 20991 events. 13222/20991 cut-off events. For 274/279 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137190 event pairs, 11340 based on Foata normal form. 0/16305 useless extension candidates. Maximal degree in co-relation 40544. Up to 19395 conditions per place. [2024-11-07 19:21:49,749 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2024-11-07 19:21:49,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 436 flow [2024-11-07 19:21:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 221 transitions. [2024-11-07 19:21:49,754 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36650082918739635 [2024-11-07 19:21:49,754 INFO L175 Difference]: Start difference. First operand has 129 places, 137 transitions, 292 flow. Second operand 3 states and 221 transitions. [2024-11-07 19:21:49,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 436 flow [2024-11-07 19:21:49,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 121 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:21:49,756 INFO L231 Difference]: Finished difference. Result has 114 places, 121 transitions, 261 flow [2024-11-07 19:21:49,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=261, PETRI_PLACES=114, PETRI_TRANSITIONS=121} [2024-11-07 19:21:49,757 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -67 predicate places. [2024-11-07 19:21:49,757 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 121 transitions, 261 flow [2024-11-07 19:21:49,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 19:21:49,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:49,759 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:21:49,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 19:21:49,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:49,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117697, now seen corresponding path program 1 times [2024-11-07 19:21:49,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:49,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505373544] [2024-11-07 19:21:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:49,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:49,859 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 19:21:49,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:49,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505373544] [2024-11-07 19:21:49,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505373544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:49,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:49,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:21:49,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402703300] [2024-11-07 19:21:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:49,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:21:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:21:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:21:49,910 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-07 19:21:49,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 121 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 19:21:49,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:49,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-07 19:21:49,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:50,972 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-07 19:21:50,972 INFO L125 PetriNetUnfolderBase]: For 274/279 co-relation queries the response was YES. [2024-11-07 19:21:51,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20998 events. 13223/20998 cut-off events. For 274/279 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137255 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40558. Up to 19397 conditions per place. [2024-11-07 19:21:51,081 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 91 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-11-07 19:21:51,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 463 flow [2024-11-07 19:21:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:21:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:21:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2024-11-07 19:21:51,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30845771144278605 [2024-11-07 19:21:51,083 INFO L175 Difference]: Start difference. First operand has 114 places, 121 transitions, 261 flow. Second operand 4 states and 248 transitions. [2024-11-07 19:21:51,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 463 flow [2024-11-07 19:21:51,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 127 transitions, 462 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:21:51,086 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 281 flow [2024-11-07 19:21:51,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=117, PETRI_TRANSITIONS=123} [2024-11-07 19:21:51,086 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -64 predicate places. [2024-11-07 19:21:51,087 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 281 flow [2024-11-07 19:21:51,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 19:21:51,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:51,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-07 19:21:51,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 19:21:51,087 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:51,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1770117669, now seen corresponding path program 1 times [2024-11-07 19:21:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:51,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770538472] [2024-11-07 19:21:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:51,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:51,138 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 19:21:51,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:51,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770538472] [2024-11-07 19:21:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770538472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:51,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:51,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 19:21:51,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91401216] [2024-11-07 19:21:51,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:51,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:21:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:51,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:21:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:21:51,143 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 201 [2024-11-07 19:21:51,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 19:21:51,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:51,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 201 [2024-11-07 19:21:51,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:52,682 INFO L124 PetriNetUnfolderBase]: 13222/20994 cut-off events. [2024-11-07 19:21:52,683 INFO L125 PetriNetUnfolderBase]: For 276/281 co-relation queries the response was YES. [2024-11-07 19:21:52,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40567 conditions, 20994 events. 13222/20994 cut-off events. For 276/281 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137169 event pairs, 11340 based on Foata normal form. 1/16310 useless extension candidates. Maximal degree in co-relation 40556. Up to 19387 conditions per place. [2024-11-07 19:21:52,840 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 87 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-07 19:21:52,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 460 flow [2024-11-07 19:21:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:21:52,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:21:52,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2024-11-07 19:21:52,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3034825870646766 [2024-11-07 19:21:52,842 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 281 flow. Second operand 4 states and 244 transitions. [2024-11-07 19:21:52,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 460 flow [2024-11-07 19:21:52,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 454 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-07 19:21:52,846 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 282 flow [2024-11-07 19:21:52,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=282, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-11-07 19:21:52,847 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-07 19:21:52,848 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 282 flow [2024-11-07 19:21:52,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 19:21:52,848 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:52,848 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:52,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 19:21:52,849 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:52,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -31369791, now seen corresponding path program 1 times [2024-11-07 19:21:52,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:52,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550239918] [2024-11-07 19:21:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:52,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:53,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550239918] [2024-11-07 19:21:53,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550239918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:21:53,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436068716] [2024-11-07 19:21:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:53,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:53,050 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 19:21:53,052 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 19:21:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:53,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 19:21:53,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:21:53,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:53,275 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:21:53,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-07 19:21:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 19:21:53,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436068716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:21:53,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:21:53,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-07 19:21:53,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818824100] [2024-11-07 19:21:53,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:21:53,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 19:21:53,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 19:21:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-07 19:21:53,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-07 19:21:53,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 282 flow. Second operand has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 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 19:21:53,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:53,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-07 19:21:53,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:55,170 INFO L124 PetriNetUnfolderBase]: 13223/20998 cut-off events. [2024-11-07 19:21:55,170 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-07 19:21:55,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40582 conditions, 20998 events. 13223/20998 cut-off events. For 278/283 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137237 event pairs, 11340 based on Foata normal form. 1/16313 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-07 19:21:55,309 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 90 selfloop transitions, 7 changer transitions 0/128 dead transitions. [2024-11-07 19:21:55,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 128 transitions, 490 flow [2024-11-07 19:21:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 19:21:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-07 19:21:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 357 transitions. [2024-11-07 19:21:55,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2537313432835821 [2024-11-07 19:21:55,311 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 282 flow. Second operand 7 states and 357 transitions. [2024-11-07 19:21:55,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 128 transitions, 490 flow [2024-11-07 19:21:55,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 128 transitions, 480 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-07 19:21:55,314 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 293 flow [2024-11-07 19:21:55,315 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2024-11-07 19:21:55,315 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-07 19:21:55,315 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 293 flow [2024-11-07 19:21:55,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.92857142857143) internal successors, (545), 14 states have internal predecessors, (545), 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 19:21:55,316 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:55,316 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:55,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 19:21:55,520 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,SelfDestructingSolverStorable15 [2024-11-07 19:21:55,521 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:55,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -31369819, now seen corresponding path program 1 times [2024-11-07 19:21:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:55,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907326691] [2024-11-07 19:21:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:55,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:55,606 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 19:21:55,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:55,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907326691] [2024-11-07 19:21:55,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907326691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:21:55,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947503779] [2024-11-07 19:21:55,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:55,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:21:55,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:21:55,609 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 19:21:55,614 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 19:21:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:55,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-07 19:21:55,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:21:55,746 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 19:21:55,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:21:55,771 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 19:21:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947503779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:21:55,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:21:55,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-07 19:21:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302582359] [2024-11-07 19:21:55,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:21:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-07 19:21:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-07 19:21:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-07 19:21:55,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-07 19:21:55,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 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 19:21:55,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:55,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-07 19:21:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:56,966 INFO L124 PetriNetUnfolderBase]: 13222/20996 cut-off events. [2024-11-07 19:21:56,967 INFO L125 PetriNetUnfolderBase]: For 284/289 co-relation queries the response was YES. [2024-11-07 19:21:57,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40585 conditions, 20996 events. 13222/20996 cut-off events. For 284/289 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137154 event pairs, 11340 based on Foata normal form. 1/16312 useless extension candidates. Maximal degree in co-relation 40572. Up to 19387 conditions per place. [2024-11-07 19:21:57,084 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 88 selfloop transitions, 7 changer transitions 0/126 dead transitions. [2024-11-07 19:21:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 126 transitions, 494 flow [2024-11-07 19:21:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:21:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:21:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-07 19:21:57,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.263681592039801 [2024-11-07 19:21:57,086 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 293 flow. Second operand 6 states and 318 transitions. [2024-11-07 19:21:57,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 126 transitions, 494 flow [2024-11-07 19:21:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 126 transitions, 483 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-07 19:21:57,089 INFO L231 Difference]: Finished difference. Result has 124 places, 123 transitions, 303 flow [2024-11-07 19:21:57,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2024-11-07 19:21:57,089 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -57 predicate places. [2024-11-07 19:21:57,089 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 303 flow [2024-11-07 19:21:57,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.25) internal successors, (314), 8 states have internal predecessors, (314), 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 19:21:57,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:57,090 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:57,106 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 19:21:57,294 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,SelfDestructingSolverStorable16 [2024-11-07 19:21:57,294 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:57,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1766205989, now seen corresponding path program 2 times [2024-11-07 19:21:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061361396] [2024-11-07 19:21:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:57,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061361396] [2024-11-07 19:21:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061361396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:57,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:57,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:57,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883634185] [2024-11-07 19:21:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:57,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:57,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:57,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 201 [2024-11-07 19:21:57,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 19:21:57,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:57,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 201 [2024-11-07 19:21:57,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:58,466 INFO L124 PetriNetUnfolderBase]: 13222/20995 cut-off events. [2024-11-07 19:21:58,466 INFO L125 PetriNetUnfolderBase]: For 285/290 co-relation queries the response was YES. [2024-11-07 19:21:58,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40583 conditions, 20995 events. 13222/20995 cut-off events. For 285/290 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 137155 event pairs, 11340 based on Foata normal form. 0/16311 useless extension candidates. Maximal degree in co-relation 40570. Up to 19387 conditions per place. [2024-11-07 19:21:58,560 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 86 selfloop transitions, 2 changer transitions 0/122 dead transitions. [2024-11-07 19:21:58,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 122 transitions, 477 flow [2024-11-07 19:21:58,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-07 19:21:58,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3383084577114428 [2024-11-07 19:21:58,561 INFO L175 Difference]: Start difference. First operand has 124 places, 123 transitions, 303 flow. Second operand 3 states and 204 transitions. [2024-11-07 19:21:58,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 122 transitions, 477 flow [2024-11-07 19:21:58,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 463 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:21:58,564 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 291 flow [2024-11-07 19:21:58,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-11-07 19:21:58,564 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -60 predicate places. [2024-11-07 19:21:58,564 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 291 flow [2024-11-07 19:21:58,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 19:21:58,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:58,565 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:58,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 19:21:58,565 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:58,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash -600905848, now seen corresponding path program 1 times [2024-11-07 19:21:58,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:58,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100279492] [2024-11-07 19:21:58,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:21:58,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:21:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:21:58,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100279492] [2024-11-07 19:21:58,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100279492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:21:58,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:21:58,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:21:58,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818844533] [2024-11-07 19:21:58,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:21:58,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:21:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:21:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:21:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:21:58,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-07 19:21:58,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:21:58,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:21:58,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-07 19:21:58,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:21:59,741 INFO L124 PetriNetUnfolderBase]: 13222/20979 cut-off events. [2024-11-07 19:21:59,741 INFO L125 PetriNetUnfolderBase]: For 278/283 co-relation queries the response was YES. [2024-11-07 19:21:59,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40562 conditions, 20979 events. 13222/20979 cut-off events. For 278/283 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 136930 event pairs, 11340 based on Foata normal form. 2175/18486 useless extension candidates. Maximal degree in co-relation 40549. Up to 19397 conditions per place. [2024-11-07 19:21:59,890 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 87 selfloop transitions, 1 changer transitions 0/120 dead transitions. [2024-11-07 19:21:59,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 463 flow [2024-11-07 19:21:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:21:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:21:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2024-11-07 19:21:59,892 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33001658374792703 [2024-11-07 19:21:59,892 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 291 flow. Second operand 3 states and 199 transitions. [2024-11-07 19:21:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 463 flow [2024-11-07 19:21:59,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:21:59,894 INFO L231 Difference]: Finished difference. Result has 119 places, 120 transitions, 285 flow [2024-11-07 19:21:59,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=119, PETRI_TRANSITIONS=120} [2024-11-07 19:21:59,895 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -62 predicate places. [2024-11-07 19:21:59,895 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 120 transitions, 285 flow [2024-11-07 19:21:59,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 19:21:59,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:21:59,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:21:59,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 19:21:59,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:21:59,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:21:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash -600905847, now seen corresponding path program 1 times [2024-11-07 19:21:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:21:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362964479] [2024-11-07 19:21:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:21:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:21:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:22:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:22:00,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:22:00,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362964479] [2024-11-07 19:22:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362964479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:22:00,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:22:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 19:22:00,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12399921] [2024-11-07 19:22:00,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:22:00,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 19:22:00,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:22:00,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 19:22:00,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-07 19:22:00,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 201 [2024-11-07 19:22:00,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 120 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 19:22:00,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:22:00,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 201 [2024-11-07 19:22:00,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:22:01,011 INFO L124 PetriNetUnfolderBase]: 11052/18318 cut-off events. [2024-11-07 19:22:01,012 INFO L125 PetriNetUnfolderBase]: For 444/546 co-relation queries the response was YES. [2024-11-07 19:22:01,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34868 conditions, 18318 events. 11052/18318 cut-off events. For 444/546 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 127933 event pairs, 5552 based on Foata normal form. 2053/16191 useless extension candidates. Maximal degree in co-relation 34855. Up to 12865 conditions per place. [2024-11-07 19:22:01,132 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 158 selfloop transitions, 5 changer transitions 0/193 dead transitions. [2024-11-07 19:22:01,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 193 transitions, 763 flow [2024-11-07 19:22:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 19:22:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-07 19:22:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2024-11-07 19:22:01,133 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38930348258706465 [2024-11-07 19:22:01,133 INFO L175 Difference]: Start difference. First operand has 119 places, 120 transitions, 285 flow. Second operand 4 states and 313 transitions. [2024-11-07 19:22:01,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 193 transitions, 763 flow [2024-11-07 19:22:01,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 193 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-07 19:22:01,136 INFO L231 Difference]: Finished difference. Result has 122 places, 122 transitions, 312 flow [2024-11-07 19:22:01,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=122, PETRI_TRANSITIONS=122} [2024-11-07 19:22:01,137 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -59 predicate places. [2024-11-07 19:22:01,137 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 122 transitions, 312 flow [2024-11-07 19:22:01,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 19:22:01,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:22:01,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:22:01,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 19:22:01,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:22:01,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:22:01,137 INFO L85 PathProgramCache]: Analyzing trace with hash -710045442, now seen corresponding path program 1 times [2024-11-07 19:22:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:22:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103115363] [2024-11-07 19:22:01,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:22:01,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:22:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:22:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:22:01,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:22:01,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103115363] [2024-11-07 19:22:01,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103115363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 19:22:01,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618003075] [2024-11-07 19:22:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:22:01,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 19:22:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:22:01,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 19:22:01,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 19:22:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:22:01,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-07 19:22:01,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 19:22:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:22:01,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 19:22:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 19:22:01,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618003075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 19:22:01,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 19:22:01,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-07 19:22:01,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116599219] [2024-11-07 19:22:01,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 19:22:01,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 19:22:01,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:22:01,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 19:22:01,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-07 19:22:01,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 201 [2024-11-07 19:22:01,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 122 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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 19:22:01,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:22:01,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 201 [2024-11-07 19:22:01,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:22:02,773 INFO L124 PetriNetUnfolderBase]: 8372/14128 cut-off events. [2024-11-07 19:22:02,774 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-07 19:22:02,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27976 conditions, 14128 events. 8372/14128 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 102867 event pairs, 190 based on Foata normal form. 2244/14078 useless extension candidates. Maximal degree in co-relation 27961. Up to 10135 conditions per place. [2024-11-07 19:22:02,826 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 186 selfloop transitions, 4 changer transitions 0/216 dead transitions. [2024-11-07 19:22:02,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 216 transitions, 860 flow [2024-11-07 19:22:02,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 19:22:02,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-07 19:22:02,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2024-11-07 19:22:02,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-11-07 19:22:02,828 INFO L175 Difference]: Start difference. First operand has 122 places, 122 transitions, 312 flow. Second operand 6 states and 402 transitions. [2024-11-07 19:22:02,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 216 transitions, 860 flow [2024-11-07 19:22:02,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 216 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-07 19:22:02,832 INFO L231 Difference]: Finished difference. Result has 116 places, 110 transitions, 272 flow [2024-11-07 19:22:02,833 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=116, PETRI_TRANSITIONS=110} [2024-11-07 19:22:02,833 INFO L277 CegarLoopForPetriNet]: 181 programPoint places, -65 predicate places. [2024-11-07 19:22:02,833 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 110 transitions, 272 flow [2024-11-07 19:22:02,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 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 19:22:02,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:22:02,834 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:22:02,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 19:22:03,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-07 19:22:03,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 122 more)] === [2024-11-07 19:22:03,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:22:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1341956522, now seen corresponding path program 1 times [2024-11-07 19:22:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:22:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003151804] [2024-11-07 19:22:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:22:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:22:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:22:03,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-07 19:22:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-07 19:22:03,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-07 19:22:03,074 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-07 19:22:03,074 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (124 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (123 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (122 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 125 remaining) [2024-11-07 19:22:03,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (111 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 125 remaining) [2024-11-07 19:22:03,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (102 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (101 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 125 remaining) [2024-11-07 19:22:03,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 125 remaining) [2024-11-07 19:22:03,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (65 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 125 remaining) [2024-11-07 19:22:03,079 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 125 remaining) [2024-11-07 19:22:03,080 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 125 remaining) [2024-11-07 19:22:03,081 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr24ASSERT_VIOLATIONMEMORY_LEAK (28 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 125 remaining) [2024-11-07 19:22:03,082 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 125 remaining) [2024-11-07 19:22:03,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 125 remaining) [2024-11-07 19:22:03,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 125 remaining) [2024-11-07 19:22:03,083 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 125 remaining) [2024-11-07 19:22:03,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 125 remaining) [2024-11-07 19:22:03,084 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 125 remaining) [2024-11-07 19:22:03,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 19:22:03,084 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 19:22:03,085 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-07 19:22:03,085 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-07 19:22:03,133 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-07 19:22:03,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 285 transitions, 597 flow [2024-11-07 19:22:03,166 INFO L124 PetriNetUnfolderBase]: 42/366 cut-off events. [2024-11-07 19:22:03,167 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-07 19:22:03,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 366 events. 42/366 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2135 event pairs, 1 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 291. Up to 12 conditions per place. [2024-11-07 19:22:03,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 285 transitions, 597 flow [2024-11-07 19:22:03,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 285 transitions, 597 flow [2024-11-07 19:22:03,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:22:03,180 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;@5a77a0cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:22:03,181 INFO L334 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2024-11-07 19:22:03,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:22:03,181 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-11-07 19:22:03,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:22:03,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:22:03,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:22:03,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2024-11-07 19:22:03,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:22:03,182 INFO L85 PathProgramCache]: Analyzing trace with hash 34260, now seen corresponding path program 1 times [2024-11-07 19:22:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:22:03,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437977552] [2024-11-07 19:22:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:22:03,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:22:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:22:03,211 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 19:22:03,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:22:03,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437977552] [2024-11-07 19:22:03,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437977552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:22:03,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:22:03,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:22:03,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268582051] [2024-11-07 19:22:03,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:22:03,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:22:03,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:22:03,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:22:03,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:22:03,246 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 285 [2024-11-07 19:22:03,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 285 transitions, 597 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 19:22:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:22:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 285 [2024-11-07 19:22:03,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand