/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:50:48,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:50:48,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:50:48,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:50:48,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:50:48,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:50:48,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:50:48,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:50:48,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:50:48,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:50:48,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:50:48,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:50:48,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:50:48,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:50:48,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:50:48,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:50:48,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:50:48,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:50:48,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:50:48,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:50:48,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:50:48,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:50:48,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:50:48,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:50:48,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:50:48,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:50:48,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:50:48,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:50:48,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:50:48,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:50:48,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:50:48,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:50:48,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:50:48,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:50:48,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:50:48,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:50:48,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:50:48,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:50:48,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:50:48,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:50:48,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:50:48,477 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-21 13:50:48,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:50:48,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:50:48,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:50:48,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:50:48,507 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:50:48,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:50:48,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:50:48,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:50:48,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:50:48,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:50:48,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:50:48,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:50:48,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:50:48,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:50:48,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:50:48,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:50:48,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:50:48,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:50:48,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:50:48,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:50:48,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:50:48,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 13:50:48,511 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:50:48,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:50:48,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:50:48,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:50:48,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:50:48,847 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:50:48,848 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 13:50:48,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671c9a5b9/a55cfd41cc2d4cdbb586ece818ed38ba/FLAGd86064b3a [2020-08-21 13:50:49,667 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:50:49,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 13:50:49,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671c9a5b9/a55cfd41cc2d4cdbb586ece818ed38ba/FLAGd86064b3a [2020-08-21 13:50:50,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/671c9a5b9/a55cfd41cc2d4cdbb586ece818ed38ba [2020-08-21 13:50:50,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:50:50,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:50:50,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:50:50,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:50:50,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:50:50,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:50:50" (1/1) ... [2020-08-21 13:50:50,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14653f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:50, skipping insertion in model container [2020-08-21 13:50:50,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:50:50" (1/1) ... [2020-08-21 13:50:50,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:50:50,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:50:51,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:50:51,801 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:50:52,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:50:52,178 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:50:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52 WrapperNode [2020-08-21 13:50:52,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:50:52,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:50:52,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:50:52,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:50:52,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... [2020-08-21 13:50:52,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:50:52,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:50:52,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:50:52,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:50:52,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:50:52,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:50:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:50:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-21 13:50:52,447 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-21 13:50:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-21 13:50:52,448 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-21 13:50:52,449 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-21 13:50:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 13:50:52,450 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 13:50:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 13:50:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 13:50:52,451 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 13:50:52,452 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 13:50:52,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 13:50:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 13:50:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-21 13:50:52,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-21 13:50:52,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 13:50:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 13:50:52,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 13:50:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-21 13:50:52,460 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 13:50:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-21 13:50:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-21 13:50:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-21 13:50:52,461 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-21 13:50:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-21 13:50:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-21 13:50:52,462 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-21 13:50:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-21 13:50:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-21 13:50:52,463 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-21 13:50:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-21 13:50:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-21 13:50:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-21 13:50:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-21 13:50:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-21 13:50:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-21 13:50:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:50:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-21 13:50:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-21 13:50:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-21 13:50:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 13:50:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 13:50:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 13:50:52,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 13:50:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 13:50:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-21 13:50:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-21 13:50:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-21 13:50:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-21 13:50:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-21 13:50:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 13:50:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 13:50:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 13:50:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 13:50:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-21 13:50:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-21 13:50:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-21 13:50:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-21 13:50:52,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-21 13:50:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-21 13:50:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 13:50:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 13:50:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-21 13:50:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-21 13:50:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-21 13:50:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-21 13:50:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-21 13:50:52,474 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 13:50:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 13:50:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 13:50:52,475 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-21 13:50:52,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:50:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 13:50:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 13:50:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 13:50:52,476 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 13:50:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 13:50:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-21 13:50:52,477 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-21 13:50:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-21 13:50:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-21 13:50:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-21 13:50:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-21 13:50:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-21 13:50:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-21 13:50:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 13:50:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 13:50:52,480 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 13:50:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:50:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 13:50:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-21 13:50:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-21 13:50:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-21 13:50:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-21 13:50:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-21 13:50:52,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-21 13:50:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-21 13:50:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-21 13:50:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-21 13:50:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 13:50:52,486 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 13:50:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-21 13:50:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-21 13:50:52,487 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-21 13:50:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-21 13:50:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-21 13:50:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-21 13:50:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-21 13:50:52,488 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-21 13:50:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-21 13:50:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-21 13:50:52,489 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-21 13:50:52,490 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-21 13:50:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-21 13:50:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:50:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:50:52,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:50:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:50:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:50:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:50:52,494 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-21 13:50:52,495 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-21 13:50:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-21 13:50:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 13:50:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 13:50:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:50:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 13:50:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 13:50:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 13:50:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 13:50:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 13:50:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-21 13:50:52,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-21 13:50:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-21 13:50:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-21 13:50:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-21 13:50:52,505 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:50:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:50:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:50:52,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:50:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 13:50:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 13:50:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 13:50:52,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 13:50:53,518 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 13:50:53,525 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-21 13:50:56,667 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:50:56,668 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 13:50:56,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:50:56 BoogieIcfgContainer [2020-08-21 13:50:56,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:50:56,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:50:56,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:50:56,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:50:56,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:50:50" (1/3) ... [2020-08-21 13:50:56,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6461bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:50:56, skipping insertion in model container [2020-08-21 13:50:56,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:50:52" (2/3) ... [2020-08-21 13:50:56,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6461bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:50:56, skipping insertion in model container [2020-08-21 13:50:56,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:50:56" (3/3) ... [2020-08-21 13:50:56,686 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 13:50:56,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:50:56,709 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:50:56,728 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:50:56,759 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:50:56,759 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:50:56,759 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:50:56,759 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:50:56,759 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:50:56,760 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:50:56,760 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:50:56,760 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:50:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-21 13:50:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 13:50:56,805 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:50:56,806 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 13:50:56,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:50:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:50:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-21 13:50:56,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:50:56,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828776309] [2020-08-21 13:50:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:50:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:59,299 WARN L193 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 13:50:59,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:59,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:50:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:50:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:50:59,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828776309] [2020-08-21 13:50:59,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:50:59,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:50:59,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117415197] [2020-08-21 13:50:59,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:50:59,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:50:59,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:50:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:50:59,473 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-21 13:51:01,632 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-21 13:51:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:51:13,226 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-21 13:51:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:51:13,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-21 13:51:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:51:13,264 INFO L225 Difference]: With dead ends: 1404 [2020-08-21 13:51:13,264 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 13:51:13,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:51:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 13:51:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-21 13:51:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-21 13:51:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-21 13:51:13,523 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-21 13:51:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:51:13,523 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-21 13:51:13,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:51:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-21 13:51:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 13:51:13,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:51:13,527 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 13:51:13,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:51:13,527 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:51:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:51:13,528 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-21 13:51:13,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:51:13,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942269475] [2020-08-21 13:51:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:51:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:15,219 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 13:51:15,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:51:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:15,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:51:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 13:51:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:15,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:51:15,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942269475] [2020-08-21 13:51:15,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:51:15,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:51:15,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631303985] [2020-08-21 13:51:15,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:51:15,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:51:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:51:15,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:51:15,583 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-21 13:51:17,112 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 13:51:19,830 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 13:51:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:51:30,230 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-21 13:51:30,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:51:30,233 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-21 13:51:30,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:51:30,240 INFO L225 Difference]: With dead ends: 1298 [2020-08-21 13:51:30,240 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 13:51:30,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:51:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 13:51:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 13:51:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 13:51:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-21 13:51:30,399 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-21 13:51:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:51:30,399 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-21 13:51:30,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:51:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-21 13:51:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 13:51:30,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:51:30,402 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-08-21 13:51:30,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:51:30,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:51:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:51:30,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-21 13:51:30,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:51:30,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999719328] [2020-08-21 13:51:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:51:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:32,161 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 13:51:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:51:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:32,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:51:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 13:51:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:32,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 13:51:32,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999719328] [2020-08-21 13:51:32,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:51:32,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:51:32,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67048597] [2020-08-21 13:51:32,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:51:32,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:51:32,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:51:32,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:51:32,609 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-21 13:51:34,229 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 13:51:36,760 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 13:51:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:51:48,171 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-21 13:51:48,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 13:51:48,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 13:51:48,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:51:48,177 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 13:51:48,178 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 13:51:48,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:51:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 13:51:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 13:51:48,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 13:51:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-21 13:51:48,366 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-21 13:51:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:51:48,366 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-21 13:51:48,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:51:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-21 13:51:48,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 13:51:48,369 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:51:48,369 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:51:48,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:51:48,370 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:51:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:51:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-21 13:51:48,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:51:48,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829133706] [2020-08-21 13:51:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:51:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,044 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 13:51:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:51:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:51:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 13:51:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 13:51:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:51:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:51:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:51:50,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829133706] [2020-08-21 13:51:50,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:51:50,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 13:51:50,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127980896] [2020-08-21 13:51:50,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:51:50,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:51:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:51:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:51:50,570 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-21 13:51:52,209 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 517