./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 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.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 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 15:42:46,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 15:42:46,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-22 15:42:46,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 15:42:46,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 15:42:46,258 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 15:42:46,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 15:42:46,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 15:42:46,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 15:42:46,262 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 15:42:46,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 15:42:46,262 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 15:42:46,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 15:42:46,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 15:42:46,264 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 15:42:46,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 15:42:46,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 15:42:46,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 15:42:46,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 15:42:46,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 15:42:46,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 15:42:46,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 15:42:46,268 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 15:42:46,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 15:42:46,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 15:42:46,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 15:42:46,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 15:42:46,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 15:42:46,271 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2024-11-22 15:42:46,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 15:42:46,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 15:42:46,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 15:42:46,469 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 15:42:46,469 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 15:42:46,470 INFO L431 ainManager$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 [2024-11-22 15:42:47,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 15:42:48,041 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 15:42:48,041 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 [2024-11-22 15:42:48,071 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bddeaa3a/516ef14858fd411a9b7dbb760882b6d8/FLAGf2d09cd56 [2024-11-22 15:42:48,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bddeaa3a/516ef14858fd411a9b7dbb760882b6d8 [2024-11-22 15:42:48,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 15:42:48,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 15:42:48,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 15:42:48,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 15:42:48,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 15:42:48,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:48" (1/1) ... [2024-11-22 15:42:48,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85e065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:48, skipping insertion in model container [2024-11-22 15:42:48,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:42:48" (1/1) ... [2024-11-22 15:42:48,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 15:42:48,786 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] [2024-11-22 15:42:48,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 15:42:48,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 15:42:49,027 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] [2024-11-22 15:42:49,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 15:42:49,095 INFO L204 MainTranslator]: Completed translation [2024-11-22 15:42:49,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49 WrapperNode [2024-11-22 15:42:49,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 15:42:49,096 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 15:42:49,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 15:42:49,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 15:42:49,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,260 INFO L138 Inliner]: procedures = 118, calls = 555, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1115 [2024-11-22 15:42:49,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 15:42:49,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 15:42:49,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 15:42:49,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 15:42:49,271 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,286 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,325 INFO L175 MemorySlicer]: Split 409 memory accesses to 13 slices as follows [3, 2, 21, 21, 21, 21, 21, 21, 21, 3, 21, 45, 188]. 46 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5]. The 399 writes are split as follows [1, 0, 21, 21, 21, 21, 21, 21, 21, 2, 21, 45, 183]. [2024-11-22 15:42:49,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,403 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 15:42:49,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 15:42:49,408 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 15:42:49,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 15:42:49,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (1/1) ... [2024-11-22 15:42:49,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 15:42:49,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 15:42:49,434 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) [2024-11-22 15:42:49,436 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 [2024-11-22 15:42:49,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#10 [2024-11-22 15:42:49,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#11 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#12 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#10 [2024-11-22 15:42:49,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#11 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#12 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-22 15:42:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-22 15:42:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-22 15:42:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-22 15:42:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-22 15:42:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-22 15:42:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-22 15:42:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-22 15:42:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-22 15:42:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2024-11-22 15:42:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2024-11-22 15:42:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2024-11-22 15:42:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2024-11-22 15:42:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-22 15:42:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-22 15:42:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-22 15:42:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-22 15:42:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 15:42:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 15:42:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 15:42:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 15:42:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2024-11-22 15:42:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2024-11-22 15:42:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-22 15:42:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-22 15:42:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2024-11-22 15:42:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2024-11-22 15:42:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-22 15:42:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-22 15:42:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-22 15:42:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-22 15:42:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-22 15:42:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 15:42:49,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 15:42:49,703 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 15:42:49,705 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 15:42:49,736 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-22 15:42:57,017 INFO L? ?]: Removed 198 outVars from TransFormulas that were not future-live. [2024-11-22 15:42:57,017 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 15:42:57,030 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 15:42:57,032 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 15:42:57,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:57 BoogieIcfgContainer [2024-11-22 15:42:57,032 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 15:42:57,034 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 15:42:57,034 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 15:42:57,037 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 15:42:57,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:42:48" (1/3) ... [2024-11-22 15:42:57,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2baff0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:57, skipping insertion in model container [2024-11-22 15:42:57,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:42:49" (2/3) ... [2024-11-22 15:42:57,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2baff0d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:42:57, skipping insertion in model container [2024-11-22 15:42:57,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:42:57" (3/3) ... [2024-11-22 15:42:57,041 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2024-11-22 15:42:57,053 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 15:42:57,053 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 15:42:57,102 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 15:42:57,107 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;@1b88530, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 15:42:57,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 15:42:57,113 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) [2024-11-22 15:42:57,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 15:42:57,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 15:42:57,129 INFO L215 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] [2024-11-22 15:42:57,129 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 15:42:57,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 15:42:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1777250594, now seen corresponding path program 1 times [2024-11-22 15:42:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 15:42:57,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621582817] [2024-11-22 15:42:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 15:42:57,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 15:43:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 15:43:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-22 15:43:20,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 15:43:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621582817] [2024-11-22 15:43:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621582817] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 15:43:20,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906321182] [2024-11-22 15:43:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 15:43:20,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 15:43:20,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 15:43:20,235 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) [2024-11-22 15:43:20,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 15:43:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 15:43:44,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 4654 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 15:43:44,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 15:43:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2024-11-22 15:43:44,455 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 15:43:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906321182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 15:43:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 15:43:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 15:43:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452562513] [2024-11-22 15:43:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 15:43:44,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 15:43:44,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 15:43:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 15:43:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 15:43:44,486 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) [2024-11-22 15:43:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 15:43:44,513 INFO L93 Difference]: Finished difference Result 367 states and 532 transitions. [2024-11-22 15:43:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 15:43:44,515 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 [2024-11-22 15:43:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 15:43:44,521 INFO L225 Difference]: With dead ends: 367 [2024-11-22 15:43:44,521 INFO L226 Difference]: Without dead ends: 170 [2024-11-22 15:43:44,524 INFO L431 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 [2024-11-22 15:43:44,526 INFO L432 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 [2024-11-22 15:43:44,527 INFO L433 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] [2024-11-22 15:43:44,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-22 15:43:44,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-22 15:43:44,559 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) [2024-11-22 15:43:44,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 232 transitions. [2024-11-22 15:43:44,562 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 232 transitions. Word has length 118 [2024-11-22 15:43:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 15:43:44,563 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 232 transitions. [2024-11-22 15:43:44,563 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) [2024-11-22 15:43:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 232 transitions. [2024-11-22 15:43:44,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-22 15:43:44,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 15:43:44,567 INFO L215 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] [2024-11-22 15:43:44,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 15:43:44,767 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 [2024-11-22 15:43:44,768 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 15:43:44,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 15:43:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1015447086, now seen corresponding path program 1 times [2024-11-22 15:43:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 15:43:44,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129197033] [2024-11-22 15:43:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 15:43:44,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 15:44:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 15:44:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2024-11-22 15:44:08,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 15:44:08,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129197033] [2024-11-22 15:44:08,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129197033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 15:44:08,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 15:44:08,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 15:44:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5598121] [2024-11-22 15:44:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 15:44:08,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 15:44:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 15:44:08,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 15:44:08,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 15:44:08,008 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) [2024-11-22 15:44:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 15:44:08,149 INFO L93 Difference]: Finished difference Result 435 states and 600 transitions. [2024-11-22 15:44:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 15:44:08,150 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 [2024-11-22 15:44:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 15:44:08,152 INFO L225 Difference]: With dead ends: 435 [2024-11-22 15:44:08,152 INFO L226 Difference]: Without dead ends: 283 [2024-11-22 15:44:08,153 INFO L431 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 [2024-11-22 15:44:08,154 INFO L432 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 [2024-11-22 15:44:08,154 INFO L433 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] [2024-11-22 15:44:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-22 15:44:08,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 269. [2024-11-22 15:44:08,170 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) [2024-11-22 15:44:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 376 transitions. [2024-11-22 15:44:08,174 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 376 transitions. Word has length 118 [2024-11-22 15:44:08,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 15:44:08,174 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 376 transitions. [2024-11-22 15:44:08,175 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) [2024-11-22 15:44:08,175 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 376 transitions. [2024-11-22 15:44:08,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-22 15:44:08,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 15:44:08,176 INFO L215 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] [2024-11-22 15:44:08,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 15:44:08,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 15:44:08,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 15:44:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash 358712219, now seen corresponding path program 1 times [2024-11-22 15:44:08,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 15:44:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895689786] [2024-11-22 15:44:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 15:44:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms