./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 18:58:49,371 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 18:58:49,415 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 18:58:49,422 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 18:58:49,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 18:58:49,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 18:58:49,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 18:58:49,454 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 18:58:49,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 18:58:49,455 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 18:58:49,455 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 18:58:49,455 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 18:58:49,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 18:58:49,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 18:58:49,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 18:58:49,457 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 18:58:49,457 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 18:58:49,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 18:58:49,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 18:58:49,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 18:58:49,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 18:58:49,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 18:58:49,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 18:58:49,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 18:58:49,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 18:58:49,459 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 ! call(reach_error())) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2025-01-09 18:58:49,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 18:58:49,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 18:58:49,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 18:58:49,726 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 18:58:49,727 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 18:58:49,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-01-09 18:58:50,934 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3eb48e4fc/56e2b5201961470b99e82423f38d203a/FLAGcb9b687e7 [2025-01-09 18:58:51,329 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 18:58:51,330 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-01-09 18:58:51,357 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3eb48e4fc/56e2b5201961470b99e82423f38d203a/FLAGcb9b687e7 [2025-01-09 18:58:51,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3eb48e4fc/56e2b5201961470b99e82423f38d203a [2025-01-09 18:58:51,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 18:58:51,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 18:58:51,491 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 18:58:51,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 18:58:51,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 18:58:51,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:58:51" (1/1) ... [2025-01-09 18:58:51,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed7661c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:51, skipping insertion in model container [2025-01-09 18:58:51,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:58:51" (1/1) ... [2025-01-09 18:58:51,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 18:58:52,196 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2025-01-09 18:58:52,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 18:58:52,475 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 18:58:52,629 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2025-01-09 18:58:52,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 18:58:52,698 INFO L204 MainTranslator]: Completed translation [2025-01-09 18:58:52,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52 WrapperNode [2025-01-09 18:58:52,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 18:58:52,701 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 18:58:52,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 18:58:52,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 18:58:52,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,786 INFO L138 Inliner]: procedures = 118, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1113 [2025-01-09 18:58:52,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 18:58:52,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 18:58:52,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 18:58:52,789 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 18:58:52,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,808 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,843 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [2, 21, 3, 21, 21, 21, 21, 21, 21, 21, 3, 45, 188]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5]. The 399 writes are split as follows [0, 21, 1, 21, 21, 21, 21, 21, 21, 21, 2, 45, 183]. [2025-01-09 18:58:52,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,910 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 18:58:52,957 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 18:58:52,957 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 18:58:52,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 18:58:52,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (1/1) ... [2025-01-09 18:58:52,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 18:58:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 18:58:52,984 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) [2025-01-09 18:58:52,987 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 [2025-01-09 18:58:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 18:58:53,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2025-01-09 18:58:53,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 18:58:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 18:58:53,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2025-01-09 18:58:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2025-01-09 18:58:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2025-01-09 18:58:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 18:58:53,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 18:58:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 18:58:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 18:58:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 18:58:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-01-09 18:58:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-01-09 18:58:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 18:58:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 18:58:53,223 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 18:58:53,224 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 18:58:53,254 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2025-01-09 18:59:00,592 INFO L? ?]: Removed 196 outVars from TransFormulas that were not future-live. [2025-01-09 18:59:00,592 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 18:59:00,604 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 18:59:00,604 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 18:59:00,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:59:00 BoogieIcfgContainer [2025-01-09 18:59:00,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 18:59:00,607 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 18:59:00,607 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 18:59:00,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 18:59:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:58:51" (1/3) ... [2025-01-09 18:59:00,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee8d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:59:00, skipping insertion in model container [2025-01-09 18:59:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:58:52" (2/3) ... [2025-01-09 18:59:00,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee8d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:59:00, skipping insertion in model container [2025-01-09 18:59:00,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:59:00" (3/3) ... [2025-01-09 18:59:00,612 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-01-09 18:59:00,623 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 18:59:00,627 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i that has 11 procedures, 187 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 18:59:00,691 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 18:59:00,713 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=LoopHeads, 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;@14ba59c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 18:59:00,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 18:59:00,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2025-01-09 18:59:00,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 18:59:00,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 18:59:00,726 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 18:59:00,726 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 18:59:00,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 18:59:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1777250594, now seen corresponding path program 1 times [2025-01-09 18:59:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 18:59:00,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268633130] [2025-01-09 18:59:00,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 18:59:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 18:59:23,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 18:59:24,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 18:59:24,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 18:59:24,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 18:59:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-01-09 18:59:24,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 18:59:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268633130] [2025-01-09 18:59:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268633130] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 18:59:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456592244] [2025-01-09 18:59:24,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 18:59:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 18:59:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 18:59:24,826 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) [2025-01-09 18:59:24,828 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 [2025-01-09 18:59:46,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 18:59:47,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 18:59:47,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 18:59:47,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 18:59:47,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 4654 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 18:59:47,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 18:59:47,238 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-01-09 18:59:47,240 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 18:59:47,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456592244] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 18:59:47,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 18:59:47,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 18:59:47,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545275108] [2025-01-09 18:59:47,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 18:59:47,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 18:59:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 18:59:47,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 18:59:47,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 18:59:47,266 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.4539007092198581) internal successors, (205), 157 states have internal predecessors, (205), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-01-09 18:59:47,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 18:59:47,294 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2025-01-09 18:59:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 18:59:47,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2025-01-09 18:59:47,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 18:59:47,301 INFO L225 Difference]: With dead ends: 367 [2025-01-09 18:59:47,301 INFO L226 Difference]: Without dead ends: 170 [2025-01-09 18:59:47,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 18:59:47,305 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 18:59:47,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 18:59:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-01-09 18:59:47,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-01-09 18:59:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.3823529411764706) internal successors, (188), 141 states have internal predecessors, (188), 25 states have call successors, (25), 9 states have call predecessors, (25), 8 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-01-09 18:59:47,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2025-01-09 18:59:47,340 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2025-01-09 18:59:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 18:59:47,340 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2025-01-09 18:59:47,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-01-09 18:59:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2025-01-09 18:59:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 18:59:47,343 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 18:59:47,344 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 18:59:47,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 18:59:47,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 18:59:47,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 18:59:47,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 18:59:47,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1015447086, now seen corresponding path program 1 times [2025-01-09 18:59:47,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 18:59:47,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871770410] [2025-01-09 18:59:47,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 18:59:47,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:00:09,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 19:00:09,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 19:00:09,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:00:09,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:00:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 19:00:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:00:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871770410] [2025-01-09 19:00:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871770410] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:00:10,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:00:10,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 19:00:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506227718] [2025-01-09 19:00:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:00:10,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 19:00:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:00:10,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 19:00:10,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 19:00:10,050 INFO L87 Difference]: Start difference. First operand 170 states and 232 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 19:00:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:00:10,189 INFO L93 Difference]: Finished difference Result 435 states and 600 transitions. [2025-01-09 19:00:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 19:00:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 118 [2025-01-09 19:00:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:00:10,192 INFO L225 Difference]: With dead ends: 435 [2025-01-09 19:00:10,192 INFO L226 Difference]: Without dead ends: 283 [2025-01-09 19:00:10,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 19:00:10,194 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 180 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 19:00:10,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 432 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 19:00:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-01-09 19:00:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2025-01-09 19:00:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 221 states have (on average 1.420814479638009) internal successors, (314), 226 states have internal predecessors, (314), 34 states have call successors, (34), 14 states have call predecessors, (34), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-01-09 19:00:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2025-01-09 19:00:10,211 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2025-01-09 19:00:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:00:10,211 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2025-01-09 19:00:10,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-01-09 19:00:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2025-01-09 19:00:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-01-09 19:00:10,213 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:00:10,213 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:00:10,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 19:00:10,213 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:00:10,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:00:10,214 INFO L85 PathProgramCache]: Analyzing trace with hash 358712219, now seen corresponding path program 1 times [2025-01-09 19:00:10,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:00:10,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826563968] [2025-01-09 19:00:10,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:00:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:00:31,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-01-09 19:00:31,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-01-09 19:00:31,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:00:31,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:00:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 19:00:32,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:00:32,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826563968] [2025-01-09 19:00:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826563968] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:00:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:00:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 19:00:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542582405] [2025-01-09 19:00:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:00:32,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 19:00:32,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:00:32,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 19:00:32,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 19:00:32,136 INFO L87 Difference]: Start difference. First operand 269 states and 376 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8)