./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_longest.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/queue_longest.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', '5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3'] 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/queue_longest.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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 19:05:20,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 19:05:20,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-07 19:05:20,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 19:05:20,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 19:05:20,388 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 19:05:20,390 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 19:05:20,390 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 19:05:20,391 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 19:05:20,391 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 19:05:20,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 19:05:20,391 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 19:05:20,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 19:05:20,391 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 19:05:20,391 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 19:05:20,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-07 19:05:20,392 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 19:05:20,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:05:20,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 19:05:20,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 19:05:20,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 19:05:20,394 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 19:05:20,394 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 19:05:20,394 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 19:05:20,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 19:05:20,394 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 -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2024-11-07 19:05:20,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 19:05:20,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 19:05:20,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 19:05:20,616 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 19:05:20,616 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 19:05:20,617 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2024-11-07 19:05:21,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 19:05:22,023 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 19:05:22,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2024-11-07 19:05:22,037 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8db1ef2f4/1f41b1902c75416b92cac8c9cd885f86/FLAGc505f833a [2024-11-07 19:05:22,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8db1ef2f4/1f41b1902c75416b92cac8c9cd885f86 [2024-11-07 19:05:22,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 19:05:22,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 19:05:22,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 19:05:22,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 19:05:22,057 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 19:05:22,058 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b7e0d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22, skipping insertion in model container [2024-11-07 19:05:22,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 19:05:22,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:05:22,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 19:05:22,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 19:05:22,555 INFO L204 MainTranslator]: Completed translation [2024-11-07 19:05:22,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22 WrapperNode [2024-11-07 19:05:22,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 19:05:22,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 19:05:22,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 19:05:22,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 19:05:22,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,678 INFO L138 Inliner]: procedures = 274, calls = 1659, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1846 [2024-11-07 19:05:22,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 19:05:22,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 19:05:22,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 19:05:22,680 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 19:05:22,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,736 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2024-11-07 19:05:22,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,737 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,820 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,830 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 19:05:22,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 19:05:22,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 19:05:22,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 19:05:22,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (1/1) ... [2024-11-07 19:05:22,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 19:05:22,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 19:05:22,883 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 19:05:22,888 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 19:05:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-07 19:05:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-07 19:05:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-07 19:05:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-07 19:05:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-07 19:05:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 19:05:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 19:05:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 19:05:22,907 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 19:05:23,040 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 19:05:23,043 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 19:05:24,647 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-07 19:05:24,648 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 19:05:47,587 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 19:05:47,587 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-07 19:05:47,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:05:47 BoogieIcfgContainer [2024-11-07 19:05:47,588 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 19:05:47,589 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 19:05:47,589 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 19:05:47,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 19:05:47,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:05:22" (1/3) ... [2024-11-07 19:05:47,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23eda28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:05:47, skipping insertion in model container [2024-11-07 19:05:47,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:05:22" (2/3) ... [2024-11-07 19:05:47,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23eda28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:05:47, skipping insertion in model container [2024-11-07 19:05:47,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:05:47" (3/3) ... [2024-11-07 19:05:47,597 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2024-11-07 19:05:47,610 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 19:05:47,610 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2024-11-07 19:05:47,610 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-07 19:05:47,708 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-07 19:05:47,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 172 transitions, 358 flow [2024-11-07 19:05:47,823 INFO L124 PetriNetUnfolderBase]: 14/170 cut-off events. [2024-11-07 19:05:47,825 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-07 19:05:47,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 14/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 524 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2024-11-07 19:05:47,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 172 transitions, 358 flow [2024-11-07 19:05:47,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 169 transitions, 350 flow [2024-11-07 19:05:47,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 19:05:47,850 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;@81d5104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 19:05:47,853 INFO L334 AbstractCegarLoop]: Starting to check reachability of 134 error locations. [2024-11-07 19:05:47,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-07 19:05:47,884 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-07 19:05:47,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-07 19:05:47,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:05:47,885 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:05:47,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-07 19:05:47,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:05:47,889 INFO L85 PathProgramCache]: Analyzing trace with hash 124458, now seen corresponding path program 1 times [2024-11-07 19:05:47,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:05:47,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891980648] [2024-11-07 19:05:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:05:47,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:05:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:05:48,715 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 19:05:48,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:05:48,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891980648] [2024-11-07 19:05:48,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891980648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:05:48,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:05:48,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:05:48,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229743981] [2024-11-07 19:05:48,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:05:48,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:05:48,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:05:48,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:05:48,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:05:48,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-07 19:05:48,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 169 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 19:05:48,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:05:48,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-07 19:05:48,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-07 19:05:49,396 INFO L124 PetriNetUnfolderBase]: 1744/4653 cut-off events. [2024-11-07 19:05:49,397 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-11-07 19:05:49,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 4653 events. 1744/4653 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 37036 event pairs, 1393 based on Foata normal form. 182/3587 useless extension candidates. Maximal degree in co-relation 7362. Up to 2745 conditions per place. [2024-11-07 19:05:49,426 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 58 selfloop transitions, 2 changer transitions 0/154 dead transitions. [2024-11-07 19:05:49,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 154 transitions, 440 flow [2024-11-07 19:05:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 19:05:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-07 19:05:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2024-11-07 19:05:49,436 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7015503875968992 [2024-11-07 19:05:49,437 INFO L175 Difference]: Start difference. First operand has 162 places, 169 transitions, 350 flow. Second operand 3 states and 362 transitions. [2024-11-07 19:05:49,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 154 transitions, 440 flow [2024-11-07 19:05:49,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-07 19:05:49,444 INFO L231 Difference]: Finished difference. Result has 151 places, 154 transitions, 316 flow [2024-11-07 19:05:49,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=151, PETRI_TRANSITIONS=154} [2024-11-07 19:05:49,448 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -11 predicate places. [2024-11-07 19:05:49,448 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 154 transitions, 316 flow [2024-11-07 19:05:49,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 19:05:49,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-07 19:05:49,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-07 19:05:49,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 19:05:49,449 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 131 more)] === [2024-11-07 19:05:49,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 19:05:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 124459, now seen corresponding path program 1 times [2024-11-07 19:05:49,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 19:05:49,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559515211] [2024-11-07 19:05:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 19:05:49,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 19:05:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 19:05:50,661 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 19:05:50,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 19:05:50,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559515211] [2024-11-07 19:05:50,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559515211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 19:05:50,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 19:05:50,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-07 19:05:50,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394289197] [2024-11-07 19:05:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 19:05:50,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 19:05:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 19:05:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 19:05:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 19:05:50,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 172 [2024-11-07 19:05:50,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 154 transitions, 316 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 19:05:50,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-07 19:05:50,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 172 [2024-11-07 19:05:50,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand