/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:26:07,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:26:07,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:26:07,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:26:07,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:26:07,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:26:07,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:26:07,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:26:07,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:26:07,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:26:07,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:26:07,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:26:07,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:26:07,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:26:07,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:26:07,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:26:07,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:26:07,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:26:07,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:26:07,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:26:07,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:26:08,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:26:08,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:26:08,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:26:08,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:26:08,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:26:08,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:26:08,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:26:08,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:26:08,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:26:08,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:26:08,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:26:08,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:26:08,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:26:08,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:26:08,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:26:08,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:26:08,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:26:08,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:26:08,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:26:08,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:26:08,026 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 [2020-08-18 22:26:08,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:26:08,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:26:08,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:26:08,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:26:08,068 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:26:08,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:26:08,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:26:08,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:26:08,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:26:08,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:26:08,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:26:08,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:26:08,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:26:08,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:26:08,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:26:08,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:26:08,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:26:08,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:26:08,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:26:08,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:26:08,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:26:08,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:26:08,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:26:08,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:26:08,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:26:08,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:26:08,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 22:26:08,073 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 22:26:08,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:26:08,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:26:08,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:26:08,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:26:08,374 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:26:08,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 22:26:08,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f761b5fa/382998253cca489baa331fac00392130/FLAGa38713754 [2020-08-18 22:26:09,193 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:26:09,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 22:26:09,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f761b5fa/382998253cca489baa331fac00392130/FLAGa38713754 [2020-08-18 22:26:09,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f761b5fa/382998253cca489baa331fac00392130 [2020-08-18 22:26:09,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:26:09,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:26:09,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:26:09,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:26:09,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:26:09,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:09" (1/1) ... [2020-08-18 22:26:09,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304deeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:09, skipping insertion in model container [2020-08-18 22:26:09,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:26:09" (1/1) ... [2020-08-18 22:26:09,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:26:09,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:26:09,950 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-08-18 22:26:09,951 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2540-2541] [2020-08-18 22:26:10,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:26:10,700 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:26:10,794 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [2539] [2020-08-18 22:26:10,794 WARN L1191 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [2540-2541] [2020-08-18 22:26:10,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:26:11,148 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:26:11,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11 WrapperNode [2020-08-18 22:26:11,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:26:11,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:26:11,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:26:11,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:26:11,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (1/1) ... [2020-08-18 22:26:11,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:26:11,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:26:11,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:26:11,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:26:11,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (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 [2020-08-18 22:26:11,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:26:11,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:26:11,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 22:26:11,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-08-18 22:26:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 22:26:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2020-08-18 22:26:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight32 [2020-08-18 22:26:11,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight16 [2020-08-18 22:26:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __arch_hweight8 [2020-08-18 22:26:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure paravirt_read_tsc [2020-08-18 22:26:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2020-08-18 22:26:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2020-08-18 22:26:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_disable [2020-08-18 22:26:11,598 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2020-08-18 22:26:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2020-08-18 22:26:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 22:26:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 22:26:11,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 22:26:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 22:26:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 22:26:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 22:26:11,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 22:26:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 22:26:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 22:26:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 22:26:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 22:26:11,601 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2020-08-18 22:26:11,602 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_get_drvdata [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_drvdata [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_trigger [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_read [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_cooked_read [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_calibrate [2020-08-18 22:26:11,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_time [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_handler [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_set_poll_interval [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_decode [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_cooked_read [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_button_read [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_poll [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_open [2020-08-18 22:26:11,604 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_close [2020-08-18 22:26:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_calibrate_timer [2020-08-18 22:26:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_name [2020-08-18 22:26:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_device [2020-08-18 22:26:11,605 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_masks [2020-08-18 22:26:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init_port [2020-08-18 22:26:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_connect [2020-08-18 22:26:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_disconnect [2020-08-18 22:26:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_parse_options [2020-08-18 22:26:11,606 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_init [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure analog_exit [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gameport_driver_1 [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 22:26:11,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2020-08-18 22:26:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2020-08-18 22:26:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2020-08-18 22:26:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2020-08-18 22:26:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 22:26:11,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __gameport_register_driver [2020-08-18 22:26:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2020-08-18 22:26:11,609 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_close [2020-08-18 22:26:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_open [2020-08-18 22:26:11,610 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_start_polling [2020-08-18 22:26:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_stop_polling [2020-08-18 22:26:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure gameport_unregister_driver [2020-08-18 22:26:11,611 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2020-08-18 22:26:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2020-08-18 22:26:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2020-08-18 22:26:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2020-08-18 22:26:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2020-08-18 22:26:11,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kmem_cache_alloc [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_bind_1 [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2020-08-18 22:26:11,613 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 22:26:11,614 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 22:26:11,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight32 [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight16 [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure __arch_hweight8 [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2020-08-18 22:26:11,615 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure paravirt_read_tsc [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2020-08-18 22:26:11,616 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2020-08-18 22:26:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_disable [2020-08-18 22:26:11,617 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2020-08-18 22:26:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2020-08-18 22:26:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2020-08-18 22:26:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2020-08-18 22:26:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 22:26:11,618 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 22:26:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 22:26:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc [2020-08-18 22:26:11,619 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 22:26:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2020-08-18 22:26:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:26:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 22:26:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:26:11,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 22:26:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 22:26:11,621 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 22:26:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 22:26:11,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:26:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 22:26:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 22:26:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 22:26:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 22:26:11,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 22:26:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 22:26:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 22:26:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gameport_driver_1 [2020-08-18 22:26:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2020-08-18 22:26:11,627 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 22:26:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2020-08-18 22:26:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 22:26:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 22:26:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 22:26:11,635 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2020-08-18 22:26:11,636 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_open [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_close [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_get_drvdata [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_drvdata [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure __gameport_register_driver [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_unregister_driver [2020-08-18 22:26:11,637 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_trigger [2020-08-18 22:26:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 22:26:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:26:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_read [2020-08-18 22:26:11,638 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_cooked_read [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_calibrate [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_time [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_handler [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_set_poll_interval [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_start_polling [2020-08-18 22:26:11,639 INFO L130 BoogieDeclarations]: Found specification of procedure gameport_stop_polling [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_decode [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_cooked_read [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_button_read [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_poll [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_open [2020-08-18 22:26:11,640 INFO L130 BoogieDeclarations]: Found specification of procedure analog_close [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_calibrate_timer [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_name [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_device [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_masks [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init_port [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_connect [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_disconnect [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_parse_options [2020-08-18 22:26:11,641 INFO L130 BoogieDeclarations]: Found specification of procedure analog_init [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure analog_exit [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_bind_1 [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2020-08-18 22:26:11,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 22:26:11,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:26:12,441 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 22:26:14,010 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:26:14,011 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 22:26:14,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:14 BoogieIcfgContainer [2020-08-18 22:26:14,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:26:14,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:26:14,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:26:14,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:26:14,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:26:09" (1/3) ... [2020-08-18 22:26:14,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f81c9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:14, skipping insertion in model container [2020-08-18 22:26:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:26:11" (2/3) ... [2020-08-18 22:26:14,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f81c9d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:26:14, skipping insertion in model container [2020-08-18 22:26:14,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:26:14" (3/3) ... [2020-08-18 22:26:14,028 INFO L109 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--input--joystick--analog.ko-entry_point.cil.out.i [2020-08-18 22:26:14,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:26:14,047 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:26:14,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:26:14,087 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:26:14,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:26:14,088 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:26:14,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:26:14,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:26:14,088 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:26:14,088 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:26:14,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:26:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states. [2020-08-18 22:26:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 22:26:14,132 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:14,133 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] [2020-08-18 22:26:14,134 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2058672228, now seen corresponding path program 1 times [2020-08-18 22:26:14,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:14,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599369075] [2020-08-18 22:26:14,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:15,181 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:15,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:26:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599369075] [2020-08-18 22:26:15,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:15,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:26:15,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565389763] [2020-08-18 22:26:15,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:26:15,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:26:15,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:26:15,421 INFO L87 Difference]: Start difference. First operand 791 states. Second operand 5 states. [2020-08-18 22:26:16,407 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2020-08-18 22:26:24,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:24,198 INFO L93 Difference]: Finished difference Result 1648 states and 2166 transitions. [2020-08-18 22:26:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:26:24,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 22:26:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:24,224 INFO L225 Difference]: With dead ends: 1648 [2020-08-18 22:26:24,224 INFO L226 Difference]: Without dead ends: 834 [2020-08-18 22:26:24,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:26:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2020-08-18 22:26:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 803. [2020-08-18 22:26:24,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-18 22:26:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1039 transitions. [2020-08-18 22:26:24,436 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1039 transitions. Word has length 30 [2020-08-18 22:26:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:24,436 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1039 transitions. [2020-08-18 22:26:24,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:26:24,437 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1039 transitions. [2020-08-18 22:26:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 22:26:24,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:24,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-08-18 22:26:24,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:26:24,440 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash 229024885, now seen corresponding path program 1 times [2020-08-18 22:26:24,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:24,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036419584] [2020-08-18 22:26:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:24,936 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:24,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:25,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:26:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 22:26:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:26:25,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036419584] [2020-08-18 22:26:25,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:26:25,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 22:26:25,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194688322] [2020-08-18 22:26:25,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:26:25,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:26:25,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:26:25,152 INFO L87 Difference]: Start difference. First operand 803 states and 1039 transitions. Second operand 7 states. [2020-08-18 22:26:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:31,179 INFO L93 Difference]: Finished difference Result 1640 states and 2144 transitions. [2020-08-18 22:26:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 22:26:31,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-08-18 22:26:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:31,190 INFO L225 Difference]: With dead ends: 1640 [2020-08-18 22:26:31,191 INFO L226 Difference]: Without dead ends: 864 [2020-08-18 22:26:31,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:26:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-18 22:26:31,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 807. [2020-08-18 22:26:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2020-08-18 22:26:31,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1045 transitions. [2020-08-18 22:26:31,334 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1045 transitions. Word has length 65 [2020-08-18 22:26:31,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:31,334 INFO L479 AbstractCegarLoop]: Abstraction has 807 states and 1045 transitions. [2020-08-18 22:26:31,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:26:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1045 transitions. [2020-08-18 22:26:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 22:26:31,337 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:31,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-08-18 22:26:31,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:26:31,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:31,338 INFO L82 PathProgramCache]: Analyzing trace with hash 780245369, now seen corresponding path program 1 times [2020-08-18 22:26:31,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:31,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401369701] [2020-08-18 22:26:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,810 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:31,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 22:26:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 22:26:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:26:31,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401369701] [2020-08-18 22:26:31,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:31,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 22:26:31,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650980510] [2020-08-18 22:26:31,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 22:26:31,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:31,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 22:26:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 22:26:31,976 INFO L87 Difference]: Start difference. First operand 807 states and 1045 transitions. Second operand 8 states. [2020-08-18 22:26:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:38,822 INFO L93 Difference]: Finished difference Result 1674 states and 2194 transitions. [2020-08-18 22:26:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:26:38,824 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2020-08-18 22:26:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:38,830 INFO L225 Difference]: With dead ends: 1674 [2020-08-18 22:26:38,831 INFO L226 Difference]: Without dead ends: 894 [2020-08-18 22:26:38,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:26:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-08-18 22:26:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 837. [2020-08-18 22:26:38,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 837 states. [2020-08-18 22:26:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1089 transitions. [2020-08-18 22:26:38,964 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1089 transitions. Word has length 67 [2020-08-18 22:26:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:38,964 INFO L479 AbstractCegarLoop]: Abstraction has 837 states and 1089 transitions. [2020-08-18 22:26:38,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 22:26:38,965 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1089 transitions. [2020-08-18 22:26:38,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-18 22:26:38,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:38,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2020-08-18 22:26:38,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:26:38,968 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2072814211, now seen corresponding path program 2 times [2020-08-18 22:26:38,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:38,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705652443] [2020-08-18 22:26:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,422 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-18 22:26:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 22:26:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:26:39,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705652443] [2020-08-18 22:26:39,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:39,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 22:26:39,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915135843] [2020-08-18 22:26:39,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:26:39,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:39,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:26:39,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:26:39,601 INFO L87 Difference]: Start difference. First operand 837 states and 1089 transitions. Second operand 9 states. [2020-08-18 22:26:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:47,249 INFO L93 Difference]: Finished difference Result 1734 states and 2282 transitions. [2020-08-18 22:26:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 22:26:47,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-08-18 22:26:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:47,257 INFO L225 Difference]: With dead ends: 1734 [2020-08-18 22:26:47,257 INFO L226 Difference]: Without dead ends: 924 [2020-08-18 22:26:47,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:47,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-08-18 22:26:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 867. [2020-08-18 22:26:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-08-18 22:26:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1133 transitions. [2020-08-18 22:26:47,399 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1133 transitions. Word has length 69 [2020-08-18 22:26:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:47,401 INFO L479 AbstractCegarLoop]: Abstraction has 867 states and 1133 transitions. [2020-08-18 22:26:47,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:26:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1133 transitions. [2020-08-18 22:26:47,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-08-18 22:26:47,403 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:47,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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] [2020-08-18 22:26:47,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:26:47,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:47,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:47,405 INFO L82 PathProgramCache]: Analyzing trace with hash 621031553, now seen corresponding path program 3 times [2020-08-18 22:26:47,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:47,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901622601] [2020-08-18 22:26:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:47,863 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:47,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:47,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:48,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 22:26:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 22:26:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:48,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:26:48,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901622601] [2020-08-18 22:26:48,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:48,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:26:48,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009059293] [2020-08-18 22:26:48,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:26:48,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:48,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:26:48,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:26:48,069 INFO L87 Difference]: Start difference. First operand 867 states and 1133 transitions. Second operand 10 states. [2020-08-18 22:26:54,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:26:54,775 INFO L93 Difference]: Finished difference Result 1794 states and 2370 transitions. [2020-08-18 22:26:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:26:54,777 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-08-18 22:26:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:26:54,784 INFO L225 Difference]: With dead ends: 1794 [2020-08-18 22:26:54,784 INFO L226 Difference]: Without dead ends: 954 [2020-08-18 22:26:54,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:26:54,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2020-08-18 22:26:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 897. [2020-08-18 22:26:54,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-08-18 22:26:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1177 transitions. [2020-08-18 22:26:54,914 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1177 transitions. Word has length 71 [2020-08-18 22:26:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:26:54,914 INFO L479 AbstractCegarLoop]: Abstraction has 897 states and 1177 transitions. [2020-08-18 22:26:54,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:26:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1177 transitions. [2020-08-18 22:26:54,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-18 22:26:54,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:26:54,916 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 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] [2020-08-18 22:26:54,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:26:54,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:26:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:26:54,917 INFO L82 PathProgramCache]: Analyzing trace with hash -458468731, now seen corresponding path program 4 times [2020-08-18 22:26:54,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:26:54,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589764572] [2020-08-18 22:26:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:26:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,373 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:26:55,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:26:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:26:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:26:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:26:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 22:26:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 22:26:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:26:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:26:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:26:55,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589764572] [2020-08-18 22:26:55,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:26:55,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:26:55,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349053334] [2020-08-18 22:26:55,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:26:55,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:26:55,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:26:55,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:26:55,614 INFO L87 Difference]: Start difference. First operand 897 states and 1177 transitions. Second operand 11 states. [2020-08-18 22:27:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:27:04,262 INFO L93 Difference]: Finished difference Result 1854 states and 2458 transitions. [2020-08-18 22:27:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:27:04,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-08-18 22:27:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:27:04,274 INFO L225 Difference]: With dead ends: 1854 [2020-08-18 22:27:04,274 INFO L226 Difference]: Without dead ends: 984 [2020-08-18 22:27:04,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:27:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-08-18 22:27:04,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 927. [2020-08-18 22:27:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-18 22:27:04,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1221 transitions. [2020-08-18 22:27:04,498 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1221 transitions. Word has length 73 [2020-08-18 22:27:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:27:04,499 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1221 transitions. [2020-08-18 22:27:04,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:27:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1221 transitions. [2020-08-18 22:27:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-18 22:27:04,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:27:04,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 2, 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] [2020-08-18 22:27:04,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:27:04,502 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:27:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:27:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1523843977, now seen corresponding path program 5 times [2020-08-18 22:27:04,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:27:04,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261247813] [2020-08-18 22:27:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:27:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,209 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2020-08-18 22:27:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:27:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:27:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 22:27:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-18 22:27:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 22:27:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 22:27:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 22:27:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:27:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-18 22:27:05,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261247813] [2020-08-18 22:27:05,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:27:05,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 22:27:05,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773967616] [2020-08-18 22:27:05,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 22:27:05,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:27:05,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 22:27:05,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-18 22:27:05,539 INFO L87 Difference]: Start difference. First operand 927 states and 1221 transitions. Second operand 12 states.