./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/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/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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-?-798a7b3-m [2025-03-04 04:27:43,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 04:27:43,826 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-04 04:27:43,830 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 04:27:43,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 04:27:43,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 04:27:43,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 04:27:43,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 04:27:43,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 04:27:43,854 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 04:27:43,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 04:27:43,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 04:27:43,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 04:27:43,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 04:27:43,855 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 04:27:43,855 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 04:27:43,855 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 04:27:43,856 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 04:27:43,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 04:27:43,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 04:27:43,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 04:27:43,858 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/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 [2025-03-04 04:27:44,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 04:27:44,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 04:27:44,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 04:27:44,081 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 04:27:44,081 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 04:27:44,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-03-04 04:27:45,211 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454656188/2d4e002dd52042e8a9b6b30787bbfb64/FLAG94220b287 [2025-03-04 04:27:45,561 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 04:27:45,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-03-04 04:27:45,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454656188/2d4e002dd52042e8a9b6b30787bbfb64/FLAG94220b287 [2025-03-04 04:27:45,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/454656188/2d4e002dd52042e8a9b6b30787bbfb64 [2025-03-04 04:27:45,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 04:27:45,606 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 04:27:45,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 04:27:45,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 04:27:45,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 04:27:45,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 04:27:45" (1/1) ... [2025-03-04 04:27:45,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cd582b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:45, skipping insertion in model container [2025-03-04 04:27:45,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 04:27:45" (1/1) ... [2025-03-04 04:27:45,668 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 04:27:46,134 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/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] [2025-03-04 04:27:46,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 04:27:46,277 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 04:27:46,420 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/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] [2025-03-04 04:27:46,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 04:27:46,489 INFO L204 MainTranslator]: Completed translation [2025-03-04 04:27:46,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46 WrapperNode [2025-03-04 04:27:46,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 04:27:46,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 04:27:46,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 04:27:46,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 04:27:46,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,567 INFO L138 Inliner]: procedures = 118, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1113 [2025-03-04 04:27:46,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 04:27:46,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 04:27:46,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 04:27:46,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 04:27:46,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,672 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [2, 3, 3, 21, 21, 21, 21, 21, 21, 21, 21, 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, 2, 1, 21, 21, 21, 21, 21, 21, 21, 21, 45, 183]. [2025-03-04 04:27:46,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,709 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,722 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,724 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 04:27:46,736 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 04:27:46,739 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 04:27:46,739 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 04:27:46,740 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (1/1) ... [2025-03-04 04:27:46,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 04:27:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 04:27:46,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 04:27:46,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 04:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-04 04:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2025-03-04 04:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2025-03-04 04:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 04:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2025-03-04 04:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2025-03-04 04:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2025-03-04 04:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2025-03-04 04:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2025-03-04 04:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-03-04 04:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-03-04 04:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2025-03-04 04:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2025-03-04 04:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 04:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 04:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2025-03-04 04:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2025-03-04 04:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2025-03-04 04:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 04:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-04 04:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 04:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 04:27:47,013 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 04:27:47,015 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 04:27:47,051 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2025-03-04 04:27:52,655 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7024: havoc usbnet_resume_#t~nondet112#1; [2025-03-04 04:27:52,655 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L6992: havoc ldv_reset_resume_1_#t~nondet107#1; [2025-03-04 04:27:52,655 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7009: havoc usb_register_driver_#t~nondet109#1; [2025-03-04 04:27:52,656 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L5987: call ULTIMATE.dealloc(main_~#ldvarg2~0#1.base, main_~#ldvarg2~0#1.offset);havoc main_~#ldvarg2~0#1.base, main_~#ldvarg2~0#1.offset; [2025-03-04 04:27:52,656 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7028: havoc usbnet_suspend_#t~nondet113#1; [2025-03-04 04:27:52,656 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7013: havoc usb_reset_device_#t~nondet110#1; [2025-03-04 04:27:52,656 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L7020: havoc usbnet_probe_#t~nondet111#1; [2025-03-04 04:27:52,699 INFO L? ?]: Removed 196 outVars from TransFormulas that were not future-live. [2025-03-04 04:27:52,699 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 04:27:52,708 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 04:27:52,708 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 04:27:52,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 04:27:52 BoogieIcfgContainer [2025-03-04 04:27:52,709 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 04:27:52,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 04:27:52,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 04:27:52,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 04:27:52,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 04:27:45" (1/3) ... [2025-03-04 04:27:52,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c130617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:27:52, skipping insertion in model container [2025-03-04 04:27:52,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 04:27:46" (2/3) ... [2025-03-04 04:27:52,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c130617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 04:27:52, skipping insertion in model container [2025-03-04 04:27:52,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 04:27:52" (3/3) ... [2025-03-04 04:27:52,718 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2025-03-04 04:27:52,728 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 04:27:52,731 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. [2025-03-04 04:27:52,794 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 04:27:52,802 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;@147a61a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 04:27:52,802 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 04:27:52,805 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) [2025-03-04 04:27:52,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-04 04:27:52,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 04:27:52,814 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] [2025-03-04 04:27:52,815 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 04:27:52,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 04:27:52,818 INFO L85 PathProgramCache]: Analyzing trace with hash -55793251, now seen corresponding path program 1 times [2025-03-04 04:27:52,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 04:27:52,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416833255] [2025-03-04 04:27:52,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 04:27:52,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 04:28:13,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-04 04:28:13,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-04 04:28:13,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 04:28:13,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 04:28:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2025-03-04 04:28:14,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 04:28:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416833255] [2025-03-04 04:28:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416833255] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 04:28:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224367580] [2025-03-04 04:28:14,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 04:28:14,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 04:28:14,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 04:28:14,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 04:28:14,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 04:28:35,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-04 04:28:35,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-04 04:28:35,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 04:28:35,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 04:28:35,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 4654 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 04:28:35,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 04:28:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-03-04 04:28:35,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 04:28:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224367580] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 04:28:35,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 04:28:35,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 04:28:35,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91565673] [2025-03-04 04:28:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 04:28:35,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 04:28:35,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 04:28:35,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 04:28:35,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 04:28:35,788 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) [2025-03-04 04:28:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 04:28:35,812 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2025-03-04 04:28:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 04:28:35,813 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 [2025-03-04 04:28:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 04:28:35,819 INFO L225 Difference]: With dead ends: 367 [2025-03-04 04:28:35,819 INFO L226 Difference]: Without dead ends: 170 [2025-03-04 04:28:35,822 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 [2025-03-04 04:28:35,825 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 [2025-03-04 04:28:35,825 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] [2025-03-04 04:28:35,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-04 04:28:35,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-04 04:28:35,856 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) [2025-03-04 04:28:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2025-03-04 04:28:35,866 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2025-03-04 04:28:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 04:28:35,866 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2025-03-04 04:28:35,867 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) [2025-03-04 04:28:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2025-03-04 04:28:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-03-04 04:28:35,869 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 04:28:35,870 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] [2025-03-04 04:28:35,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 04:28:36,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-04 04:28:36,071 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 04:28:36,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 04:28:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1710788643, now seen corresponding path program 1 times [2025-03-04 04:28:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 04:28:36,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179631978] [2025-03-04 04:28:36,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 04:28:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 04:28:56,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-03-04 04:28:56,817 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-03-04 04:28:56,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 04:28:56,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 04:28:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-04 04:28:57,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 04:28:57,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179631978] [2025-03-04 04:28:57,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179631978] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 04:28:57,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 04:28:57,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 04:28:57,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566624518] [2025-03-04 04:28:57,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 04:28:57,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 04:28:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 04:28:57,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 04:28:57,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 04:28:57,353 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) [2025-03-04 04:28:57,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 04:28:57,509 INFO L93 Difference]: Finished difference Result 435 states and 600 transitions. [2025-03-04 04:28:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 04:28:57,509 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 [2025-03-04 04:28:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 04:28:57,511 INFO L225 Difference]: With dead ends: 435 [2025-03-04 04:28:57,511 INFO L226 Difference]: Without dead ends: 283 [2025-03-04 04:28:57,512 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 [2025-03-04 04:28:57,513 INFO L435 NwaCegarLoop]: 233 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, 434 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 [2025-03-04 04:28:57,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 434 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 04:28:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-03-04 04:28:57,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2025-03-04 04:28:57,526 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) [2025-03-04 04:28:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2025-03-04 04:28:57,528 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2025-03-04 04:28:57,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 04:28:57,529 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2025-03-04 04:28:57,529 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) [2025-03-04 04:28:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2025-03-04 04:28:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-04 04:28:57,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 04:28:57,531 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] [2025-03-04 04:28:57,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 04:28:57,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 04:28:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 04:28:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2053495326, now seen corresponding path program 1 times [2025-03-04 04:28:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 04:28:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557003069] [2025-03-04 04:28:57,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 04:28:57,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 04:29:18,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-04 04:29:18,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-04 04:29:18,419 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 04:29:18,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 04:29:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-03-04 04:29:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 04:29:19,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557003069] [2025-03-04 04:29:19,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557003069] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 04:29:19,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 04:29:19,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 04:29:19,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316360330] [2025-03-04 04:29:19,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 04:29:19,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 04:29:19,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 04:29:19,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 04:29:19,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 04:29:19,010 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) [2025-03-04 04:29:23,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-03-04 04:29:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 04:29:23,684 INFO L93 Difference]: Finished difference Result 730 states and 1030 transitions. [2025-03-04 04:29:23,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 04:29:23,684 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 117 [2025-03-04 04:29:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 04:29:23,686 INFO L225 Difference]: With dead ends: 730 [2025-03-04 04:29:23,687 INFO L226 Difference]: Without dead ends: 479 [2025-03-04 04:29:23,687 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 [2025-03-04 04:29:23,688 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 180 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-03-04 04:29:23,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 505 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2025-03-04 04:29:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-03-04 04:29:23,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 475. [2025-03-04 04:29:23,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 399 states have (on average 1.4335839598997493) internal successors, (572), 404 states have internal predecessors, (572), 52 states have call successors, (52), 24 states have call predecessors, (52), 23 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-04 04:29:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 670 transitions. [2025-03-04 04:29:23,717 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 670 transitions. Word has length 117 [2025-03-04 04:29:23,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 04:29:23,718 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 670 transitions. [2025-03-04 04:29:23,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2025-03-04 04:29:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 670 transitions. [2025-03-04 04:29:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-04 04:29:23,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 04:29:23,722 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2025-03-04 04:29:23,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 04:29:23,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 04:29:23,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 04:29:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1309413883, now seen corresponding path program 1 times [2025-03-04 04:29:23,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 04:29:23,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292607268] [2025-03-04 04:29:23,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 04:29:23,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms